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Bearing Products Catalog
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Bearing Products Catalog
Product catalog summary
Bearing Catalog Overview
This catalog provides a comprehensive guide to various types of bearings and related components offered by Boston Gear. It includes detailed specifications, dimensions, and engineering data for each product category.
This catalog provides a comprehensive guide to various types of bearings and related components offered by Boston Gear. It includes detailed specifications, dimensions, and engineering data for each product category.
BOST-BRONZ (Oil-Impregnated Sintered Bronze)
General Description: BOST-BRONZ is an oil-impregnated porous bronze bearing material, ideal for applications where lubrication is challenging. It features a self-contained oil supply, ensuring smooth performance under various load conditions.
Specifications: Composed primarily of copper, tin, and other elements, it conforms to ASTM B438-73 standards. It offers low friction coefficients and is suitable for heavy loads at moderate speeds.
Applications: Suitable for a wide range of industries, particularly where normal lubrication is difficult.
General Description: BOST-BRONZ is an oil-impregnated porous bronze bearing material, ideal for applications where lubrication is challenging. It features a self-contained oil supply, ensuring smooth performance under various load conditions.
Specifications: Composed primarily of copper, tin, and other elements, it conforms to ASTM B438-73 standards. It offers low friction coefficients and is suitable for heavy loads at moderate speeds.
Applications: Suitable for a wide range of industries, particularly where normal lubrication is difficult.
BEAR-N-BRONZ (SAE 660 Cast Bronze)
General Description: This section covers the specifications and applications of SAE 660 cast bronze bearings, known for their durability and performance.
General Description: This section covers the specifications and applications of SAE 660 cast bronze bearings, known for their durability and performance.
BOStonE F-1 (Glass Filled Teflon)
General Description: Glass-filled Teflon bearings offer high resistance to wear and are suitable for high-speed applications.
General Description: Glass-filled Teflon bearings offer high resistance to wear and are suitable for high-speed applications.
RULON® 641 Bearings
General Description: RULON® 641 bearings are designed for high-performance applications, providing excellent wear resistance and low friction.
General Description: RULON® 641 bearings are designed for high-performance applications, providing excellent wear resistance and low friction.
BOStonE Molded Plastic and Nylon
General Description: These sections detail the use of molded plastic and nylon bearings, highlighting their lightweight and corrosion-resistant properties.
General Description: These sections detail the use of molded plastic and nylon bearings, highlighting their lightweight and corrosion-resistant properties.
Anti-Friction (Ball Bearings)
General Description: This section includes various series of ball bearings, each designed for specific load and speed requirements.
General Description: This section includes various series of ball bearings, each designed for specific load and speed requirements.
Self-Aligning Bearings
General Description: Covers rod end and spherical bearings, emphasizing their ability to accommodate misalignment.
General Description: Covers rod end and spherical bearings, emphasizing their ability to accommodate misalignment.
Mounted Bearings
General Description: Includes pillow blocks, flanged units, and take-up frames, providing solutions for mounted bearing applications.
General Description: Includes pillow blocks, flanged units, and take-up frames, providing solutions for mounted bearing applications.
Couplings and Universal Joints
General Description: Details various types of couplings and universal joints, essential for connecting rotating shafts.
General Description: Details various types of couplings and universal joints, essential for connecting rotating shafts.
Shaft Collars and Pulleys
General Description: Includes setscrew and clamping collars, as well as timing belts and pulleys for power transmission applications.
General Description: Includes setscrew and clamping collars, as well as timing belts and pulleys for power transmission applications.
Chains and Sprockets
General Description: Covers roller chains, block chains, and sprockets, highlighting their use in conveyor and transmission systems.
General Description: Covers roller chains, block chains, and sprockets, highlighting their use in conveyor and transmission systems.
Engineering Data
Each section concludes with engineering data, providing detailed calculations and guidelines for selecting the appropriate bearing for specific applications.
Each section concludes with engineering data, providing detailed calculations and guidelines for selecting the appropriate bearing for specific applications.
Terms and Conditions
The catalog concludes with terms and conditions, outlining the policies for ordering and product use.
The catalog concludes with terms and conditions, outlining the policies for ordering and product use.
Emergency Bearing Bank
This section lists various bearing sizes available in two banks, Bank #1 and Bank #2, with specific item codes for ordering. Each bank contains a set number of bearings in different sizes, specified by dimensions in inches.
This section lists various bearing sizes available in two banks, Bank #1 and Bank #2, with specific item codes for ordering. Each bank contains a set number of bearings in different sizes, specified by dimensions in inches.
BOStonE F-1 Glass Filled Teflon Bearings
These bearings are self-lubricating, with excellent wear and corrosion resistance. They are suitable for high-load applications at moderate speeds, with a temperature range of -400°F to +550°F. Typical applications include machinery in various industries such as textiles, food processing, and automotive.
These bearings are self-lubricating, with excellent wear and corrosion resistance. They are suitable for high-load applications at moderate speeds, with a temperature range of -400°F to +550°F. Typical applications include machinery in various industries such as textiles, food processing, and automotive.
Selection Guidelines
Sleeve bearings should have a length of one to two times the shaft diameter and an outer diameter approximately 25% larger than the shaft diameter. The maximum PV value for BOStonE F-1 bearings is 20,000, with 50,000 for intermittent service.
Sleeve bearings should have a length of one to two times the shaft diameter and an outer diameter approximately 25% larger than the shaft diameter. The maximum PV value for BOStonE F-1 bearings is 20,000, with 50,000 for intermittent service.
RULON 641 Bearings
Designed for food and pharmaceutical applications, these bearings are made from FDA-cleared, non-toxic materials. They offer excellent load and wear characteristics, are corrosion-resistant, and operate well at high temperatures. The maximum PV value is 10,000, with a temperature range of -400°F to +500°F.
Designed for food and pharmaceutical applications, these bearings are made from FDA-cleared, non-toxic materials. They offer excellent load and wear characteristics, are corrosion-resistant, and operate well at high temperatures. The maximum PV value is 10,000, with a temperature range of -400°F to +500°F.
BOStonE Molded Plastic Bearings
Available in materials such as Nylon, Delrin, Celcon, and Nylatron GS, these bearings offer good chemical resistance and do not require lubrication. They are suitable for applications where moisture and chemical resistance are critical.
Available in materials such as Nylon, Delrin, Celcon, and Nylatron GS, these bearings offer good chemical resistance and do not require lubrication. They are suitable for applications where moisture and chemical resistance are critical.
Standard Tolerances and Concentricity
Standard tolerances and concentricity values are provided for various dimensions of bearings, ensuring precise fitting and performance.
Standard tolerances and concentricity values are provided for various dimensions of bearings, ensuring precise fitting and performance.
Specifications:
Nylatron GS and Delrin or Celcon materials are used for various bearings and bushings. Nylatron GS is a molybdenum disulfide-filled nylon, while Delrin and Celcon are acetals. These materials are chosen for their specific properties suitable for different applications, such as conveyor rollers and trolley conveyors.
Nylatron GS and Delrin or Celcon materials are used for various bearings and bushings. Nylatron GS is a molybdenum disulfide-filled nylon, while Delrin and Celcon are acetals. These materials are chosen for their specific properties suitable for different applications, such as conveyor rollers and trolley conveyors.
Procedures:
Bearings and bushings are designed to fit specific dimensions and are ordered by catalog number or item code. The document provides detailed dimensions for various components, ensuring compatibility with specific shaft sizes and applications.
Bearings and bushings are designed to fit specific dimensions and are ordered by catalog number or item code. The document provides detailed dimensions for various components, ensuring compatibility with specific shaft sizes and applications.
Standards and Tolerances:
Standard tolerances for dimensions are provided, typically ±0.015 inches for various parts. This ensures precision in manufacturing and compatibility in assembly.
Standard tolerances for dimensions are provided, typically ±0.015 inches for various parts. This ensures precision in manufacturing and compatibility in assembly.
Recommendations:
For optimal bearing performance, maintaining an oil film between surfaces is crucial to reduce friction and wear. The document advises on selecting appropriate oil viscosity based on speed and load conditions. It also emphasizes the importance of shaft material, hardness, and surface finish for bearing longevity.
For optimal bearing performance, maintaining an oil film between surfaces is crucial to reduce friction and wear. The document advises on selecting appropriate oil viscosity based on speed and load conditions. It also emphasizes the importance of shaft material, hardness, and surface finish for bearing longevity.
Engineering Information:
The document discusses factors affecting bearing performance, such as speed, load, and lubrication. It introduces the PV factor (Pressure x Velocity) as a measure of bearing performance, providing formulas for calculating PV and guidelines for selecting suitable bearings based on these calculations.
The document discusses factors affecting bearing performance, such as speed, load, and lubrication. It introduces the PV factor (Pressure x Velocity) as a measure of bearing performance, providing formulas for calculating PV and guidelines for selecting suitable bearings based on these calculations.
Tables and Data:
Several tables provide detailed specifications for different bearings, including dimensions, material types, and catalog numbers. These tables are essential for selecting the right components for specific applications.
Several tables provide detailed specifications for different bearings, including dimensions, material types, and catalog numbers. These tables are essential for selecting the right components for specific applications.
Critical Information:
- The PV factor is crucial for determining the suitability of a bearing for a given application.
- Material selection is vital for bearing performance, with specific recommendations for different operating conditions.
- Proper lubrication and maintenance of an oil film are essential to prevent metal-to-metal contact and extend bearing life.
- The PV factor is crucial for determining the suitability of a bearing for a given application.
- Material selection is vital for bearing performance, with specific recommendations for different operating conditions.
- Proper lubrication and maintenance of an oil film are essential to prevent metal-to-metal contact and extend bearing life.
Conclusion:
The document serves as a comprehensive guide for selecting and using bearings in various industrial applications, emphasizing the importance of material selection, proper lubrication, and adherence to specified dimensions and tolerances.
The document serves as a comprehensive guide for selecting and using bearings in various industrial applications, emphasizing the importance of material selection, proper lubrication, and adherence to specified dimensions and tolerances.
Specifications:
The document provides detailed specifications for BOST-BRONZ and BEAR-N-BRONZ bearings, including their lubrication, machining, and assembly processes. It also covers the coefficient of linear thermal expansion and shaft clearances for various materials.
The document provides detailed specifications for BOST-BRONZ and BEAR-N-BRONZ bearings, including their lubrication, machining, and assembly processes. It also covers the coefficient of linear thermal expansion and shaft clearances for various materials.
Lubrication:
BOST-BRONZ bearings are impregnated with SAE30 mineral oil, which is oxidation-resistant. Proper storage is crucial to retain the oil supply. The document outlines procedures for removing and re-oiling the lubricant. Supplementary lubrication methods are illustrated, emphasizing the importance of maintaining an oil film to reduce friction and wear.
BOST-BRONZ bearings are impregnated with SAE30 mineral oil, which is oxidation-resistant. Proper storage is crucial to retain the oil supply. The document outlines procedures for removing and re-oiling the lubricant. Supplementary lubrication methods are illustrated, emphasizing the importance of maintaining an oil film to reduce friction and wear.
Machining:
BOST-BRONZ can be machined using carbide tools, with specific recommendations for feeds and speeds. After machining, parts should be re-oiled. BEAR-N-BRONZ machining also requires carbide or high-speed tools, with specific speed recommendations.
BOST-BRONZ can be machined using carbide tools, with specific recommendations for feeds and speeds. After machining, parts should be re-oiled. BEAR-N-BRONZ machining also requires carbide or high-speed tools, with specific speed recommendations.
Assembly and Sizing:
The document describes the assembly process for BOST-BRONZ and BEAR-N-BRONZ bearings, including the use of shouldered arbors for alignment and sizing. It provides guidelines for press fit allowances and the impact on bearing inside diameter.
The document describes the assembly process for BOST-BRONZ and BEAR-N-BRONZ bearings, including the use of shouldered arbors for alignment and sizing. It provides guidelines for press fit allowances and the impact on bearing inside diameter.
Anti-Friction Bearings:
Boston Gear offers a range of anti-friction bearings, including ball bearings, rod ends, and spherical bearings. The document details the features of these bearings, such as honed raceways, low friction seals, and various material options. It also provides load data and recommended tolerances for different bearing types.
Boston Gear offers a range of anti-friction bearings, including ball bearings, rod ends, and spherical bearings. The document details the features of these bearings, such as honed raceways, low friction seals, and various material options. It also provides load data and recommended tolerances for different bearing types.
Key Data from Figures and Graphs:
- Coefficient of linear thermal expansion is provided for various temperature ranges.
- Graphs illustrate shaft clearance recommendations for different materials and bearing types.
- Press fit allowances are detailed for BOST-BRONZ and BEAR-N-BRONZ bearings, with considerations for housing material and construction.
- Coefficient of linear thermal expansion is provided for various temperature ranges.
- Graphs illustrate shaft clearance recommendations for different materials and bearing types.
- Press fit allowances are detailed for BOST-BRONZ and BEAR-N-BRONZ bearings, with considerations for housing material and construction.
Conclusion:
The document serves as a comprehensive guide for the selection, lubrication, machining, and assembly of BOST-BRONZ and BEAR-N-BRONZ bearings, providing essential engineering information for optimal performance.
The document serves as a comprehensive guide for the selection, lubrication, machining, and assembly of BOST-BRONZ and BEAR-N-BRONZ bearings, providing essential engineering information for optimal performance.
Overview: This document is a technical catalog for various types of anti-friction bearings, including radial ball bearings, thrust ball bearings, and ball bearing wheels. It provides detailed specifications, load data, and standard tolerances for different bearing series.
Specifications:
- Radial Ball Bearings: Includes 7600, 6900, and 3000 series. Features such as nylon ball retainers, single lip contact seals, and grease packing are standard. Load ratings are based on 2500 hours average life (L50), with adjustments for 3500 and 5000 hours.
- Thrust Ball Bearings: AO and SAO series are designed for light loads with high-quality hardened steel balls and nylon cages. Load ratings are provided for various RPMs.
- Ball Bearings Wheels: 2200 and 2300 series are unground, pressed steel wheels suitable for various applications. Load capacities are specified for different RPMs.
Procedures and Recommendations:
- For determining load ratings at extended hours, use 90% for 3500 hours and 80% for 5000 hours of the specified ratings.
- Recommended shaft and housing fits are detailed in the engineering section, page 110.
Standard Tolerances:
- Dimensions are provided with specific tolerances for each series, ensuring precise fitting and performance.
Load Data:
- Load ratings are provided as a guide and should not be used for life calculations. Basic radial and thrust capacities are listed for various RPMs and bearing numbers.
Special Features:
- Options for special orders include steel retainers, special dimensions, and tolerances.
- Snap rings are included in certain series, with grooves provided in others.
Overview: This document is a technical catalog detailing various types of bearings and rod ends, including specifications, load capacities, and ordering information. It includes both male and female series, with options for self-aligning and self-lubricating features.
Specifications: The catalog provides detailed specifications for each bearing type, including dimensions, material composition, and load ratings. Bearings are made from low carbon steel, case-hardened steel, and other materials for corrosion resistance and wear.
Load Capacities: Load data is provided for each bearing type, indicating the basic and ultimate static load capacities in pounds. This information is crucial for selecting the appropriate bearing for specific applications.
Ordering Information: Bearings can be ordered by catalog number or item code. The document specifies dimensions in inches and provides tolerances for each measurement.
Rod Ends: The catalog includes several series of rod ends, such as the KF Female Series, HM-C Male Series, and others. Each series has specific load ratings and weight information, with options for right-hand and left-hand threads.
Additional Features: Some bearings and rod ends come with optional features like lubricators and studs. The document notes how to order these options and provides additional engineering data references.
Tables and Diagrams: The document includes tables listing dimensions, load capacities, and ordering codes. Diagrams illustrate the design and dimensions of the bearings and rod ends, aiding in the selection process.
Overview: This document provides detailed specifications and engineering data for various series of spherical and rod end bearings, including LHA, LHB, LHSS, LHSSE, LHSSVV, LS, and LSS series. It includes dimensions, load capacities, materials, and mounting instructions.
Specifications:
- Materials: Bearings are made from materials such as 4130 steel, aluminum, bronze, stainless steel, and 52100 steel, with treatments for corrosion resistance.
- Dimensions: All dimensions are provided in inches, with specific tolerances for bore, ball diameter, and other critical measurements.
- Load Capacities: Load data is provided for each series, indicating basic and maximum static radial loads in pounds.
Engineering Data:
- Environment and Mounting: Bearings are protected against corrosion and contaminants, with lubrication grooves and holes for maintenance. Mounting instructions emphasize avoiding excessive clamping pressure and ensuring proper alignment.
- Temperature Range: Bearings can operate between -30°F and +300°F, with specific ranges for different materials.
- Misalignment Factors: The document details the misalignment absorption capabilities of different mounting arrangements, with specific angular displacement limits.
Series Specifics:
- LHA, LHB, LHSS Series: These series feature self-aligning bearings with lubrication provisions and are suitable for various load applications.
- LHSSE, LHSSVV Series: These are self-lubricating bearings with Teflon liners, designed for high load capacities and reduced maintenance.
- LS, LSS Series: Special purpose bearings with specific load data and material specifications, including sintered bronze inserts for certain sizes.
Mounting and Housing:
- Housing Bore Recommendations: Specific bore dimensions are provided for press-fit applications in aluminum or steel housings.
- Stud Specifications: Details on high tensile and integral ball studs are provided, including dimensions and load ratings.
Additional Notes: The document includes cautions regarding the reduction of housing strength due to lubrication holes and the potential for distortion from excessive clamping pressure. It also provides guidance on selecting the appropriate mounting arrangement to maximize misalignment absorption.
Specifications:
The document provides detailed specifications for various bearings, including dimensions, materials, and features. Key features include a rigid one-piece housing, chrome alloy steel balls, spherical outer race, synthetic lip type seals, eccentric locking collar, and a threaded grease fitting.
The document provides detailed specifications for various bearings, including dimensions, materials, and features. Key features include a rigid one-piece housing, chrome alloy steel balls, spherical outer race, synthetic lip type seals, eccentric locking collar, and a threaded grease fitting.
Procedures:
The document outlines procedures for analyzing radial bearing loads, including calculations for straddle and overhung loading conditions. It provides formulas for determining load connection factors and calculating radial loads based on torque, RPM, and other factors.
The document outlines procedures for analyzing radial bearing loads, including calculations for straddle and overhung loading conditions. It provides formulas for determining load connection factors and calculating radial loads based on torque, RPM, and other factors.
Standards and Recommendations:
Recommendations for bearing selection are provided, emphasizing the importance of considering radial load ratings, service factors, and operating conditions. The document also discusses lubrication options and precautions for bearing installation.
Recommendations for bearing selection are provided, emphasizing the importance of considering radial load ratings, service factors, and operating conditions. The document also discusses lubrication options and precautions for bearing installation.
Data and Tables:
The document includes extensive tables detailing radial load capacities for various bearing sizes and configurations, as well as service factors for different operating conditions. It also provides load rating tables for selecting appropriate bearings based on desired life and operating speed.
The document includes extensive tables detailing radial load capacities for various bearing sizes and configurations, as well as service factors for different operating conditions. It also provides load rating tables for selecting appropriate bearings based on desired life and operating speed.
Key Information:
- Bearings are designed for specific load capacities and operating conditions.
- Proper lubrication and installation are critical for bearing longevity.
- Load calculations should consider all forces applied to the shaft, including those from gears, sprockets, and pulleys.
- The document provides formulas and examples for calculating radial loads and selecting suitable bearings.
- Bearings are designed for specific load capacities and operating conditions.
- Proper lubrication and installation are critical for bearing longevity.
- Load calculations should consider all forces applied to the shaft, including those from gears, sprockets, and pulleys.
- The document provides formulas and examples for calculating radial loads and selecting suitable bearings.
Specifications:
The document provides detailed specifications for various housing and shaft fits, including maximum and minimum diameters, and recommended tight and loose fits for different series (1600-3000-7500-7600). It also notes specific tolerances for the 3000 and 7600 series.
The document provides detailed specifications for various housing and shaft fits, including maximum and minimum diameters, and recommended tight and loose fits for different series (1600-3000-7500-7600). It also notes specific tolerances for the 3000 and 7600 series.
Lubrication:
Boston Gear bearings are pre-lubricated and may require periodic relubrication depending on application conditions such as load, speed, and environment. The document provides guidelines for lubrication intervals and recommends using a No. 2 consistency lithium base grease.
Boston Gear bearings are pre-lubricated and may require periodic relubrication depending on application conditions such as load, speed, and environment. The document provides guidelines for lubrication intervals and recommends using a No. 2 consistency lithium base grease.
Precautions:
It is crucial that shafts are clean, straight, and free from defects. Recommended shaft tolerances vary based on speed and load conditions. The document advises on the use of flats at setscrew locations for easier shaft removal.
It is crucial that shafts are clean, straight, and free from defects. Recommended shaft tolerances vary based on speed and load conditions. The document advises on the use of flats at setscrew locations for easier shaft removal.
Mounting Procedures:
Instructions are provided for mounting setscrew locking type and eccentric locking collar type bearings. Specific torque values for setscrews are listed in a table.
Instructions are provided for mounting setscrew locking type and eccentric locking collar type bearings. Specific torque values for setscrews are listed in a table.
Shaft Couplings:
The document details various types of shaft couplings, including insert (3-jaw) type FC series, spider ring (3-jaw) type BF series, shear type BG series, and clamping type SCC series. Each type has specific dimensions, tolerances, and torque ratings.
The document details various types of shaft couplings, including insert (3-jaw) type FC series, spider ring (3-jaw) type BF series, shear type BG series, and clamping type SCC series. Each type has specific dimensions, tolerances, and torque ratings.
Engineering Information:
Additional engineering information is provided for shaft accessories, including shaft couplings, universal joints, shaft collars, thrust washers, bushings, pulleys, and timing belts. The document includes selection procedures and service factors for coupling inserts.
Additional engineering information is provided for shaft accessories, including shaft couplings, universal joints, shaft collars, thrust washers, bushings, pulleys, and timing belts. The document includes selection procedures and service factors for coupling inserts.
Tables and Charts:
The document contains tables with detailed dimensions, torque ratings, and lubrication intervals, providing essential data for selecting and maintaining bearings and couplings.
The document contains tables with detailed dimensions, torque ratings, and lubrication intervals, providing essential data for selecting and maintaining bearings and couplings.
Overview: This document provides detailed specifications and data for various types of steel and stainless steel components, including yokes, universal joints, clamping collars, and thrust washers. It includes dimensions, materials, and load data for each component type.
Yokes:
- Yokes are designed for assembly with UJSC Center Kits and come with a 3/8–16 hex socket setscrew.
- Specifications include hub diameter, bore, keyway dimensions, and weight.
- Center Kits include components such as a cross, bearings, cork washers, and lock rings.
Universal Joints:
- Available in molded type JP and JPE series with single and double configurations.
- Features include molded Delrin body for vibration dampening and electrical insulation, with maximum angular displacement of 45° for single and 90° for double joints.
- Standard tolerances for bore dimensions are provided.
Clamping Collars:
- Available in one-piece and two-piece designs, made from steel, stainless steel, and aluminum.
- Designs provide convenient setting, adjusting, and removal, preventing shaft damage.
- OSHA conformance with recessed screw heads.
- Load data and recommended screw torque are provided for different bore sizes.
Thrust Washers:
- Made from hardened and ground steel and stainless steel, with bore sizes ranging from 3/16” to 2”.
- Standard tolerances for dimensions are specified.
Key Specifications:
- Materials include Delrin, nickel-plated brass, low carbon steel, and type 303 austenitic stainless steel.
- Maximum ambient temperature for universal joints is 180°F.
- All components are provided with setscrews for secure assembly.
Bushings Specifications:
- Material: Soft Steel
- Bore Sizes: 3/16” to 1-1/4”
- Uses: Hole reducers, spacers, standoffs, slip bushings, wear sleeves, liners, cutting arbor studs.
- Tolerances: Bore ± .0005; O.D. up to 1-1/4 + .0005 +.0015, over 1-1/4 + .001 +.002; Length up to 1" +.000 -.007, over 1" +.000 -.010.
- Material: Soft Steel
- Bore Sizes: 3/16” to 1-1/4”
- Uses: Hole reducers, spacers, standoffs, slip bushings, wear sleeves, liners, cutting arbor studs.
- Tolerances: Bore ± .0005; O.D. up to 1-1/4 + .0005 +.0015, over 1-1/4 + .001 +.002; Length up to 1" +.000 -.007, over 1" +.000 -.010.
Grooved Pulleys Specifications:
- Materials: Brass, Iron, Steel
- Bore Sizes: 3/16” to 3/4”
- Complete with standard setscrews
- Tolerances: Bore +.001 - .000
- Materials: Brass, Iron, Steel
- Bore Sizes: 3/16” to 3/4”
- Complete with standard setscrews
- Tolerances: Bore +.001 - .000
Miniature HTD Timing Belts & Pulleys:
- Construction: Flat belts with evenly spaced teeth
- Performance: Smooth power transmission without slippage
- Selection Guidelines: Ensure ample reserve horsepower, avoid small pulley diameters, belt speed should not exceed 6500 feet per minute, at least one pulley should be flanged.
- Service Factors: Vary based on load classification and operation hours.
- Construction: Flat belts with evenly spaced teeth
- Performance: Smooth power transmission without slippage
- Selection Guidelines: Ensure ample reserve horsepower, avoid small pulley diameters, belt speed should not exceed 6500 feet per minute, at least one pulley should be flanged.
- Service Factors: Vary based on load classification and operation hours.
Horsepower Ratings:
- Provided for various RPMs and number of grooves on the small pulley.
- Belt life considerations for ratings left of the heavy line.
- Provided for various RPMs and number of grooves on the small pulley.
- Belt life considerations for ratings left of the heavy line.
Installation Suggestions:
- Handle belts carefully to avoid fiber breakage.
- Ensure shafts are parallel and pulleys aligned.
- Belt should fit snugly without preload.
- Handle belts carefully to avoid fiber breakage.
- Ensure shafts are parallel and pulleys aligned.
- Belt should fit snugly without preload.
Miniature Timing Belts:
- 3mm Pitch, 6mm and 9mm Widths
- Material: Neoprene-Nylon covered, fiberglass reinforced
- Temperature Range: –18°C to +85°C
- Breaking Strength: 6 mm width – 74.4 KGS, 9 mm width – 111.6 KGS
- 3mm Pitch, 6mm and 9mm Widths
- Material: Neoprene-Nylon covered, fiberglass reinforced
- Temperature Range: –18°C to +85°C
- Breaking Strength: 6 mm width – 74.4 KGS, 9 mm width – 111.6 KGS
Timing Belt Pulleys:
- 3mm Pitch PA Series
- Material: Aluminum for 6mm and 9mm wide belts
- Standard Tolerances: Bore +.001 to –.000, O.D. varies with grooves
- 3mm Pitch PA Series
- Material: Aluminum for 6mm and 9mm wide belts
- Standard Tolerances: Bore +.001 to –.000, O.D. varies with grooves
Overview: This document is a technical catalog detailing specifications for timing belt pulleys and miniature HTD timing belts. It includes information on dimensions, materials, and ordering codes for various pulley and belt series.
Sections:
- Specifications: The document provides detailed specifications for timing belt pulleys with different pitches and series, including 3MM and 5MM pitch PL and PLB series, and 5MM pitch PA series. Each entry includes dimensions such as outer diameter (O.D.), face width, bore diameter, and flange details.
- Materials and Construction: The pulleys are made from materials like aluminum alloy and Lexan, with options for clear anodized finishes and fiberglass reinforcement. The document specifies the use of knurled aluminum inserts and setscrews for secure assembly.
- Ordering Information: Each product is associated with a catalog number and item code for ordering. The document specifies standard tolerances for dimensions, ensuring precision in manufacturing and compatibility.
- Tables and Data: The document includes extensive tables listing the dimensions and codes for each product variant. Key data points include the number of grooves, pitch diameter, face width, and flange diameter.
- Recommendations and Standards: The document outlines standard tolerances for bore and outer diameter dimensions, ensuring consistency across products. It also provides guidelines for selecting the appropriate pulley based on the number of grooves and belt width.
Key Information: The document emphasizes the importance of selecting the correct pulley and belt combination for specific applications, considering factors like groove number, pitch, and material properties. It also highlights the use of setscrews for secure installation and the availability of single and double flange options.
Specifications:
The document outlines the construction of roller chains, specifying one-piece construction for small sizes and two-piece design for larger numbers of teeth. A chart is provided to indicate the transition points between solid and two-piece designs based on pitch size.
The document outlines the construction of roller chains, specifying one-piece construction for small sizes and two-piece design for larger numbers of teeth. A chart is provided to indicate the transition points between solid and two-piece designs based on pitch size.
Lubrication Types:
1. Manual Lubrication: Oil is applied manually with a brush or spout can. The volume and frequency are determined by periodic inspection.
2. Drip Lubrication: Oil is directed between link plate edges using a drip lubricator, requiring minimal oil to keep the chain moist.
3. Bath or Disc Lubrication: The chain runs through or above an oil sump, with a disc picking up oil and depositing it on the chain. This requires an enclosed oil-tight chain case.
4. Oil Stream Lubrication: A circulating pump supplies a continuous stream of oil, requiring an enclosed oil-tight chain case.
1. Manual Lubrication: Oil is applied manually with a brush or spout can. The volume and frequency are determined by periodic inspection.
2. Drip Lubrication: Oil is directed between link plate edges using a drip lubricator, requiring minimal oil to keep the chain moist.
3. Bath or Disc Lubrication: The chain runs through or above an oil sump, with a disc picking up oil and depositing it on the chain. This requires an enclosed oil-tight chain case.
4. Oil Stream Lubrication: A circulating pump supplies a continuous stream of oil, requiring an enclosed oil-tight chain case.
Lubricant Viscosities:
Recommended viscosities vary with ambient temperatures, ranging from SAE20 for 20-40°F to SAE50 for 120-140°F.
Recommended viscosities vary with ambient temperatures, ranging from SAE20 for 20-40°F to SAE50 for 120-140°F.
Selection Procedure:
a. Determine the Service Factor from the Application Classification Chart.
b. Multiply Application HP by the Service Factor to obtain Design HP.
c. Use the Selection Table to choose an appropriate chain size with a sprocket of 17 teeth or larger.
d. Determine the minimum size sprocket needed from the horsepower rating table.
e. Use additional tables to select the number of sprocket teeth, shaft center distance, and chain length.
a. Determine the Service Factor from the Application Classification Chart.
b. Multiply Application HP by the Service Factor to obtain Design HP.
c. Use the Selection Table to choose an appropriate chain size with a sprocket of 17 teeth or larger.
d. Determine the minimum size sprocket needed from the horsepower rating table.
e. Use additional tables to select the number of sprocket teeth, shaft center distance, and chain length.
Special Conditions:
Adverse conditions like abrasive, corrosive, or high temperatures can shorten chain life. Special precautions or higher capacity drives may be necessary.
Adverse conditions like abrasive, corrosive, or high temperatures can shorten chain life. Special precautions or higher capacity drives may be necessary.
Horsepower Ratings:
Tables provide horsepower ratings for various chain numbers and pitches, with factors for multiple strand ratings and lubrication types. Ratings for intermediate numbers of teeth or RPM can be obtained by interpolation.
Tables provide horsepower ratings for various chain numbers and pitches, with factors for multiple strand ratings and lubrication types. Ratings for intermediate numbers of teeth or RPM can be obtained by interpolation.
Roller Chain Sprockets Overview
This document provides detailed specifications for roller chain sprockets, focusing on No. 40 and No. 50 pitch single and double strand steel sprockets. It includes information on dimensions, tolerances, and ordering procedures.
This document provides detailed specifications for roller chain sprockets, focusing on No. 40 and No. 50 pitch single and double strand steel sprockets. It includes information on dimensions, tolerances, and ordering procedures.
Specifications
- Pitch: No. 40 (1/2” pitch), No. 50 (5/8” pitch)
- Material: Steel and Stainless Steel
- Standard Tolerances: Bore tolerance is ±.001 for steel and ±.002 for stainless steel.
- Pitch: No. 40 (1/2” pitch), No. 50 (5/8” pitch)
- Material: Steel and Stainless Steel
- Standard Tolerances: Bore tolerance is ±.001 for steel and ±.002 for stainless steel.
Ordering Information
- Sprockets can be ordered by catalog number or item code.
- Options include with or without keyway and setscrew.
- Sprockets can be ordered by catalog number or item code.
- Options include with or without keyway and setscrew.
Key Features
- All sprockets have standard keyways.
- Setscrews are located over the keyway, except at 90° where marked.
- Maximum diameter of chain over sprocket is calculated as sprocket P.D. + .469” for No. 40 and + .594” for No. 50.
- All sprockets have standard keyways.
- Setscrews are located over the keyway, except at 90° where marked.
- Maximum diameter of chain over sprocket is calculated as sprocket P.D. + .469” for No. 40 and + .594” for No. 50.
Reference Pages
- Alterations: Page 207
- Horsepower Ratings: Pages 170-172
- Lubrication: Page 169
- Materials: Page 207
- Selection Procedure: Page 168
- ANSI Diameters: Page 208
- Alterations: Page 207
- Horsepower Ratings: Pages 170-172
- Lubrication: Page 169
- Materials: Page 207
- Selection Procedure: Page 168
- ANSI Diameters: Page 208
Tables and Data
The document includes extensive tables listing sprocket dimensions, bore sizes, and catalog numbers for various configurations. Key data points include:
- Number of teeth
- Pitch diameter
- Bore diameter
- Hub length
The document includes extensive tables listing sprocket dimensions, bore sizes, and catalog numbers for various configurations. Key data points include:
- Number of teeth
- Pitch diameter
- Bore diameter
- Hub length
Conclusion
This document serves as a comprehensive guide for selecting and ordering roller chain sprockets, providing all necessary technical details and specifications.
This document serves as a comprehensive guide for selecting and ordering roller chain sprockets, providing all necessary technical details and specifications.
Overview: This document provides detailed specifications and guidelines for various types of sprockets and chain drive tensioners, including materials, dimensions, and installation instructions. It is intended for use in mechanical and engineering applications where precise component specifications are critical.
Specifications:
- Materials: Sprockets are made from materials such as steel, bronze, cast iron, and plastic. Specific types include Nylatron GS for plastic sprockets, low carbon steel for Type B sprockets, and 303 stainless steel for certain pitches.
- Dimensions: All dimensions are provided in inches. Standard tolerances for bore dimensions are ±.001 inches.
- Standard Keyways and Setscrews: The document lists standard keyway sizes and corresponding setscrew specifications for various hole diameters.
Procedures:
- Installation Instructions: Guidelines for installing idler sprockets and tensioners are provided, emphasizing the importance of correct positioning to avoid excessive wear and maintain drive efficiency.
- Alterations: Recommendations for altering sprockets, such as reboring and keyway adjustments, are included. It is advised to consult with the factory before altering hardened gears.
Standards and Recommendations:
- Overhung Load: The document explains the concept of overhung load and provides methods to reduce it, such as minimizing support distance or increasing the diameter of driving members.
- Drive Tensioners: Various types of tensioners are described, including screw adjustable, spring adjustable, and shaft-mounted types. Each type has specific applications and benefits, such as reducing maintenance and improving drive performance.
Key Data from Tables:
- Sprocket Specifications: Tables list sprocket dimensions, including pitch diameter, bore diameter, and style, for both bronze and steel sprockets.
- Tensioner Specifications: Dimensions and load capacities for different tensioner models are provided, along with catalog numbers for ordering.
Critical Information:
- Exigencies: Proper installation and maintenance of sprockets and tensioners are crucial to ensure optimal performance and longevity.
- Limitations: Alterations to hardened gears should be approached with caution, and specific guidelines must be followed to maintain component integrity.
Engineering Information Overview
This document provides detailed engineering information related to sprocket diameters, horsepower and torque capacity of shafting, temperature conversion, and metric conversion charts. It is a comprehensive guide for engineers working with bearings and related mechanical components.
Sprocket Diameters for ANSI Standard Series
The document lists sprocket diameters for various ANSI standard series, including 1/4” Pitch–No. 25, 3/8” Pitch–No. 35, 1/2” Pitch–No. 40, and others. Each series is detailed with roller diameters and corresponding pitch, outside, and bottom diameters for different numbers of teeth.
Horsepower & Torque Capacity of Shafting
This section provides a table showing the horsepower and torque capacity of shafting based on pure torsion torque capacity at 10,000 PSI maximum shear stress. It includes various shaft diameters and their corresponding horsepower and torque values.
Temperature Conversion Table
A conversion table is provided for converting temperatures between degrees Celsius and degrees Fahrenheit, ranging from -40 to 199 degrees Celsius.
Equivalent Table: Fraction, Decimal, Millimeter
This table provides conversions between fractional inches, decimal inches, and millimeters, facilitating easy conversion for engineering calculations.
Metric Conversion Chart
The document includes a metric conversion chart for various units such as area, density, power, length, volume, weight, torque, and velocity. Each unit is provided with a conversion factor to obtain the equivalent in another unit.
Service Factor Loading Chart
A chart is included for determining service factor loading for different types of machinery, such as agitators, blowers, brewing and distilling equipment, compressors, and conveyors. The chart provides service factors based on the duration of operation per day.
Guaranteed Same Day Shipment
- Products must be in stock for same-day shipment, which is available Monday through Friday, excluding U.S. holidays. For emergencies, contact 704-688-7350.
- Boston Gear reserves the right to substitute a carrier of equivalent quality if the chosen freight carrier cannot meet requirements.
- If a shipment is missed and Boston Gear covers the freight, they will pay the originally specified freight charges.
- Brokerage and export fees apply to shipments outside the U.S.
- Distributors in Eastern or Central time zones should call 562-802-3834 or fax 562-802-0153 after 5 p.m. local time to place orders.
- Video Terminal Orders entered up to 8 p.m. ET will be shipped the same day.
- The catalog includes a wide range of products such as chain tensioners, thrust washers, ladder chains, clamp collars, shaft supports, replacement bearings, timing belts, roller chain sprockets, ball bearings, shaft couplings, and more.
- Products are organized by catalog number and description, with page numbers for easy reference.
- Boston Gear offers plain bearings suitable for applications where load-carrying capacity is within the material's capabilities.
- BOST-BRONZ bearings are oil-impregnated for efficiency under heavy loads at low speeds.
- BEAR-N-BRONZ is a high-grade leaded-tin bronze with good hardness, strength, wear-resistance, and anti-friction qualities.
- BOStonE glass-filled material is self-lubricating with excellent wear and corrosion resistance.
- Boston Gear provides a range of unmounted, inch-size ball bearings, rod ends, spherical, and linear bearings.
- These bearings are available in Precision Ground, Semi- and Unground Radial, and Thrust bearings.
- Mounted Bearings offer a convenient method for load support, ranging from light-duty plain bearing blocks to precision double-row tapered roller bearing units.
- Boston Roller chains are designed to ANSI specifications for superior fatigue resistance and long operational life.
- Available in standard lengths or as complete units of any length, with multiple strand options for increased power transmission capacity.
- Boston Gear sprockets are designed to ANSI specifications for superior fatigue resistance and long operational life.
- Available in various materials and pitches, with or without hubs.
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Catalog excerpts
PLAIN CYLINDRICALFLANGED TYPETHRUST TYPE BOST-BRONZ > OILIMPREGNATEDSINTEREDBRONZEBEAR-N-BRONZ > Pages 10Ζ12Pages 1314Page 15PLATE STOCKCORED BARSSOLID BARS Page 15Page 16Page 16PLAIN CYLINDRICALCORED BARSSOLID BARS ֮ 660 CASTBRONZEBRONZEEMERGENCYBEARING BANKSBOStonE > Pages 1822Pages 23֖25Page 25BOST-BRONZ &BEAR-N-BRONZPLAIN CYLINDRICAL BOSTONE > F-1GLASS FILLEDTEFLON > Page 26Page 28FLANGEDTHRUST TYPESOLID BARS(EXTRUDED) ή F-1GLASS FILLEDTEFLONRulon > Page 28Page 29Page 29RULON 641 BEARINGSPLAIN CYLINDRICALFLANGED BOSTONE > ή MOLDED PLASTIC > Pages 30-31Page 33Page 33ROLL END FOR TUBINGEXTRA...
Open the catalog to page 2
Page 76Page 77Page 78L, H, F, T, APS/XL-S-MB SERIESSERIES > Page 85Page 86PPB SERIESPS SERIESXL SERIESL-SERIESH-SERIES Page 87Page 88Page 89Pages 90-91SL/SH SERIESMB SERIESPages 92-93Page 94 >
Open the catalog to page 4
HARDENED STEEL WASHERSSOFT STEEL BUSHINGS > Page 132Page 133GROOVED Page 134TIMING BELTSPULLEYS Pages 135-138 & 144Pages 139143 & 145֖148MULTIPLE WIDTHSTRANSMISSION CONVEYOR SERIESHEAVY SERIESANSI STANDARDSERIES Page 153-154Page 155Page 155Page 155ATTACHMENTSHOLLOW PINBLOCK > Page 161Page 162Page 163LEAF (CABLE)LADDERMINIATURE ROLLERCHAIN PULLERS &CHAINCHAIN BREAKINGTOOLS Page 163Page 164Page 165Page 166PLASTIC & STAINLESSROLLER CHAINBLOCK CHAINLADDER CHAINSTEELPage 176Pages 177-199Page 200Pages 201-202TYPE LGTYPE BGTYPE HG &UGPage 204Page 204-205 Page 206 SCREW/SPRING ADJUSTABLE SHAFT MOUNTED...
Open the catalog to page 6
The stock sizes of BOST-BRONZ bearings listed in thiscatalog will satisfy the majority of industrial applications. Tooling is available for many metric and additional inch sizes. Where tooling is not available, special sizes can be made to order. BOST-BRONZ bearings can be used on any application where the load-carrying capacity required falls within the capabilities of the material. BOST-BRONZ bearings operate efficiently under heavy loads at slow speeds. Because these bearings are supplied with oil impregnation, the original oil content provides long-lasting lubrication. For even longer life...
Open the catalog to page 9
SAVES MONEY Reduce ti m e lost whe n b r eakdow n s occu r due to bea r i n gfailu r es. You ow n stock ח a n y ti m e day o r n ight. COMPACT חHa n dy m etal kit keeps bea r i n gs togethe r i n co n ve n ie n tly labeledco m pa r t m e n ts. Bea r i n gs whe r e you wa n t the m whe n you n eed the m . REFILLS AVAILABLE חBoth kit a n d r eplace m e n t bea r i n gs a r e availablef r o m stock.See you r Bosto n Gea r Dist r ibuto r s, i n all m ajo r cities f r o m coast to coast. > Actual Size of Ba n k 10-1/2 x 13-1/2" O r de r by Ite m CodeBa n k #1 Ite m Code ז 31300Ba n k #2 Ite m Code...
Open the catalog to page 26
BOSto n E F-1 glass filled m ate r ial is co m pletely self-lub r icati n gwith outsta n di n g wea r a n d co rr osio n r esista n ce p r ope r ties, > m achi n ed f r o m ext r uded r ods to close tole r a n ces. BOSto n E F-1 I n ge n e r al, sleeve bea r i n gs should be selected with a le n gth ofo m ate r ial has a wide te m pe r atu r e capability a n d a n excelle n tPV value. BOSto n e to two ti m es the shaft dia m ete r a n d a n O.D.app n E F-1 bea r i n gs a r e g r ee n i n colo r .Lub r oxi m ately 25% la r ge r tha n the shaft dia m ete r .Age r icatio n of these bea r i n gs...
Open the catalog to page 27
Bosto n Gea r Βs RULON 641 Bea r i n gs a r e desig n ed toove r co m e the ch r o n ic p r oble m s that plague bea r i n gs used i n food a n d pha rm aceutical applicatio n s. > FDA clea r ed, USDA accepted n o n -toxic m ate r ialsՕRULON 641 co m pou n d of vi r gi n PTFE a n d fille r s desig n edto m eet poult r y a n d m eat i n dust r y specsFDA d r ug m aste r file n u m be r ed to allow fo r i n cide n talco n tact with body fluidsՕExcelle n t load a n d wea r cha r acte r istics fo r co n ti n uous n o n -lub r icated se r viceCo m patible with food a n d d r ug i n dust r ies sta...
Open the catalog to page 30
Bosto n stocks Cyli n d r ical, Fla n ged a n d Roll E n d Bea r i n gs i n r iatio n is easily acco m plished by r ebo r e o r r e m achi n eope five m ate r ials 1.Nylo r atio n s, si m ply state size desi r ed. Bo r es ca n be r educedwith bushi n (N) exhibits good che m ical a n d co rr osio n r esista n ce.Excelle n g i n se r ts. Adapto r s a r e available fo r hex shafts.(AF) Roll E n t ab r asio n r esista n ce a n d low su r face f r ictio n n d Bea r i n gs, 3" a n d up, a r e Del r i n o r Celco n with aTeflo p r ovide lo n g wea r without lub r icatio n . These n ylo n bea r i n gsa...
Open the catalog to page 32
E PRESSFIT INTOROLL SIZE *These di m e n sio n s a r e app r oxi m ately 1/64" la r ge r tha n listed.׆A > n y ite m listed WITHOUT a n Ite m Code Nu m be r is available o n a SPECIALORDER BASIS a n d m i n i m u m qua n tities m ay apply.BLIND BORE Bea > r i n gs a r e available o n special o r de r m i n i m u m qua n titieswill apply. >
Open the catalog to page 36
ALL DIMENSIONS IN INCHESORDER BY CATALOG NUMBER OR ITEM CODE BCatalogIte m > Ɔ (Pipe Size)A*CDENu m be r Code8P40D-1/4573341/48P40GS-1/457337 8P40AF-1/4 18P40D-3/857335Sch. 403/85/83/161/88P40GS-3/857338 8P40AF-3/8ח 8P40D-1/2573361.315 O.D.1/28P40GS-1/257339 1.049 I.D.8P40AF-1/2 12P40D-1/4573431/412P40GS-1/457347 12P40AF-1/457351 12P40D-3/8573443/815/163/1612P40GS-3/857348 1-1/212P40AF-3/857352 Sch. 4012P40D-1/2573451/212P40GS-1/257349 12P40AF-1/2 > ח 12P40D-5/8573461.900 O.D.5/812P40GS-5/857350 > C D 1.610 I.D.12P40AF-5/85735412P80D-1/41/412P80GS-1/4ח > B A 12P80AF-1/4 12P80D-3/8ח3/815/163/1612P80GS-3/8...
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Secu r es r ou n d shaft to co n veyo r f r a m e. Shaft ca n 't tu rn o r slide out.Clip r equi r ed o n o n e e n d o n ly, co n ve n tio n al cotte r pi n ca n be used o n othe r e n d.Available f r o m stock fo r 1/2" dia. shaft. > ORDER BY CATALOG NUMBEROR ITEM CODE CatalogIte m > 1/8 DIA. Nu m be r CodeSC-457490 > 5/16 11/4 This stai n less steel sc r ew a n d stub asse m bly fits Bli n d Bo r e Roll E n dBea r i n gs. > ORDER BY CATALOG NUMBEROR ITEM CODE CatalogIte m Nu m be r CodeSS-457491 > 1" 1/8 1/8 DIA. HOLE CAP SCREW 1/2 DIA. 1/4 - 20 X 5/8 Lg Bea r i n g Catalog >
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.