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Belt Drives, Sheaves and Couplings

Belt Drives, Sheaves and Couplings
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Belt Drives, Sheaves and Couplings

Product catalog summary
Overview: This document provides comprehensive technical information on Altra Industrial Motion's products and services, focusing on belt drives, sheaves, and couplings. It includes specifications, procedures, and product offerings from various brands under the Altra umbrella.
Company Background: TB Wood’s, part of Altra Holdings, Inc., is a leading designer and manufacturer of mechanical power transmission equipment, with a history of innovation since 1857.
Product Lines: The document details various product lines, including electromagnetic clutches and brakes, linear actuators, couplings, heavy-duty clutches and brakes, gearing, overrunning clutches, belted drives, and engineered bearing assemblies.
Specifications and Standards: Detailed specifications for Sure-GripTM Bushings, V-Belt Drives, Synchronous Belt Drives, and Couplings are provided, including dimensions, installation instructions, and selection data.
Engineering Data: Includes NEMA motor standards, frame assignments, shaft diameters, engineering formulas, and general information for selecting and installing components.
Catalog References: References to catalogs for more detailed information on specific products, such as the QT Power Chain® II Belt Drive System and V-Belt Drive Solutions for HVAC Applications.
Contact Information: Contact details for customer service and application assistance are provided for various locations worldwide.
Specifications: Detailed specifications and installation instructions for various types of bushings, including dimensions, torque capacities, and installation procedures.
Installation Procedures: Step-by-step instructions for installing and removing bushings, emphasizing the importance of not using lubricants and ensuring clean surfaces.
Torque Ratings: Provides torque ratings for different bushing types, emphasizing not exceeding specified torque values.
Recommendations: Follow installation guidelines closely to ensure proper performance and longevity of the bushings.
Key Data from Tables: Detailed dimensions and weights for each bushing type, along with torque capacities and required cap screws.
Screw Tightening Information: Cautionary advice on the tightening force applied to screws to avoid bursting pressures.
Sure-Grip Bushings Overview: Designed for easy installation and removal, providing a true clamp fit equivalent to a shrink fit.
Installation Instructions: Emphasizes the importance of using a torque wrench to evenly tighten cap screws to specified values.
Torque Ratings and Dimensions: Lists torque capacities and dimensions for various bushing types.
Narrow (Ultra-V) Sheaves: Made from high tensile cast iron, designed to handle high V-belt ratings.
Specifications: Detailed specifications and guidelines for the selection and use of Narrow (Ultra-V) Banded V-Belts, including product dimensions, weight, and length.
Drive Selection: Process for selecting the appropriate belt cross-section based on design horsepower and RPM.
Service Factors: Provided for different types of driven machines and electric motors.
Recommendations: Consult the manufacturer for applications involving impact or jam loads.
Specifications: Detailed specifications for horsepower ratings of 8V and 8VX belts.
Procedures: Determine the total horsepower rating per belt by adding the basic rating to the "add-on" rating.
Materials and Construction: Wood’s sheaves are made from fine grain, high tensile cast iron.
Testing and Quality Assurance: Extensive testing to ensure safety and performance.
Recommendations: Made-to-order sheaves are recommended for applications with special requirements.
Additional Features: Wood’s sheaves feature the Sure-Grip QD type bushing.
Overview: Detailed specifications and dimensions for various types of belts manufactured by TB Wood's.
Sections: Dimensions for different belt types, classical cog V-belts, and double-V (hex) V-belts.
Key Data: Categorizes belts into several types, each with specific dimensions and weights.
Conclusion: A comprehensive guide for selecting the appropriate belt type based on specific dimensions and operational requirements.
Design Horsepower Calculation: Calculated by multiplying the Driver Horsepower (HP) by a Service Factor.
Service Factors: Provided for various machines and conditions.
Belt Selection and Specifications: Guidelines for selecting belt cross-sections based on design horsepower and motor RPM.
Drive Selection Procedures: Detailed procedures for selecting drive components.
Dynamic Balance Recommendations: Recommendations for dynamic balancing to ensure smooth operation.
Correction Factors: AC and LC correction factors are used to adjust horsepower per belt calculations.
Example Calculations: Several example calculations to illustrate the process of selecting drive components.
Overview: Detailed specifications and ratings for BX and CP belts used in mechanical systems.
Sections: Horsepower Ratings for BX and CP Belts, Correction Factors.
Key Data: Specific horsepower ratings for different RPMs and sheave diameters.
Notes: Ratings apply only to Classical Cog type belts.
Correction Factors: Correction factors for speed add-on and arc of contact for different belt types.
Arc of Contact Correction Factor: Table provided to determine the arc of contact correction factor.
Belt Length Correction Factor: Correction factors for various belt lengths.
Light-Duty Drive Selection: Step-by-step procedure for selecting light-duty drives.
Poly-V Sheaves: Details on Poly-V sheaves, including dimensions and weights.
Sure-Grip Pulleys: Information on Sure-Grip pulleys, highlighting their static balance and rim speed capabilities.
Product Specifications: Lists product numbers, dimensions, and weights for different sheave and pulley types.
Specifications: All sheaves and pulleys are statically balanced.
Bore and Construction: Sheaves and pulleys can be bored-to-size or fitted with Sure-Grip bushings.
Conveyor Pulleys: Can be furnished with crowned or straight faces.
Materials: Cast iron is standard, but ductile iron can be used for higher tensile strength.
Hubs and Idlers: Hub dimensions are proportional to the pulley size and service conditions.
Keyseat and Lagging: Pulleys are furnished with keyseats and setscrews.
Speeds: Cast iron pulleys can operate up to 6500 fpm.
Tensioning V-Belt Drives: The Force Deflection Method is used for tensioning.
Tables and Data: Tables provide recommended minimum force per belt and K factors for arc of contact.
Engineering Formulas for V-Belt Drives: Specifications and Calculations for Span Length and Deflection Height, Static Strand Tension, Deflection Forces.
Belt Constants: Table 3 provides constants M and Y for different belt types.
Belt Elongation Method: Recommended for V-band drives where larger deflecting forces are impractical.
Use of Idlers: Idlers are used to adjust tension, clear obstructions, or reduce belt whip.
V-Flat Drive Selection: V-Flat drives use a grooved sheave and a flat pulley.
Important Considerations: Ensure center distances are fixed and rigid.
Specifications and Procedures: Sheave and Pulley Requirements, Center Distance and Belt Length Calculation, Number of Belts, Minimum Flat Pulley Face Width, Flat Pulley Construction, Drive Selection Review.
Example Calculation: A V-flat drive connects a 50 HP 875 RPM motor to a 250 RPM crusher.
Quarter Turn Drives: Design Considerations, Example.
Belt Pull and Bearing Loads: Calculation, Direction of Belt Pull.
Synchronous Belt Drives: Features, Applications.
Overview: Detailed specifications and dimensions for various types of synchronous sprockets and belts.
Sprocket Specifications: Lists synchronous sprockets with Taper-Lock bushings.
Belt Specifications: Synchronous Plus belts are described with features such as fiberglass tension members.
Dimensional Tolerances: Provides standard length tolerances for belts.
Key Features and Benefits: Designed for minimal maintenance, smooth operation, and extended life.
Overview: Detailed specifications and guidelines for various types of synchronous belts.
Specifications: Lists belt specifications such as length, pitch, number of teeth, and approximate weight.
Balancing Standards: Cast iron products can operate safely up to 6500 feet per minute.
Service Factors: Outlines service factors for different classes of drivers and driven machines.
Drive Selection: Step-by-step procedure for selecting the appropriate belt and drive configuration.
Key Recommendations: Emphasizes the importance of selecting the correct belt pitch and ensuring proper balance.
Specifications and Calculations: Calculation of horsepower for a belt drive system.
Dynamic Balance Recommendations: References a chart for dynamic balance recommendations.
Drive Components Specification: Specifies various drive components including sprockets, bushings, and belts.
Drive Selection Procedure: Involves calculating the design horsepower using a service factor.
Selection Tables: Includes extensive tables for drive selection.
Specifications: Detailed specifications for QT Power Chain synchronous belts.
Construction and Materials: QT Power Chain is constructed with quality materials.
Performance and Applications: Suitable for both high-speed and low-speed synchronous drive applications.
Dimensions and Tolerances: Lists belt dimensions for 8mm and 14mm pitch synchronous belts.
Balancing Standards: Balancing is crucial for smooth operation.
Service Factors: Provided for different classes of drivers and driven machines.
Drive Selection: Includes guidelines for selecting the appropriate belt pitch and sprocket pitch diameters.
Key Data from Tables: Detailed information on belt lengths, pitch, number of teeth, and approximate weights.
Drive Selection and Calculation Procedures: Specifications, Procedures, Standards and Recommendations, Component Specification, Example Application, Drive Selection Tables, Key Data Extraction.
Overview: Technical specifications and features of timing belt drives and sprockets.
Specifications: Lists horsepower ratings for belts at different RPMs and pitch diameters.
Features of Timing Belt Drives: Slip-proof design, no lubrication required, wide capacity range, reduced need for high tension, uniform speed transmission, compact design, minimal backlash, high mechanical efficiency, lightweight, economical operation.
Applications: Used across various industries.
Sprocket Dimensions: Provides detailed dimensions for different types of sprockets.
Twin Power Timing Belts Overview: Designed to solve complex design challenges.
Specifications: Identified by the prefix “TP” followed by a code indicating length, pitch, and width.
Construction: Consist of Tension Member, Neoprene Body, Nylon Facing.
Horsepower Ratings: Same horsepower capacity as standard timing belts.
Available Sizes: Sizes available in XL, L, and H with various length and width codes.
Special Timing Belts: May have unique pitches, lengths, or constructions.
Minimum Order Quantities: Special belts must be ordered in minimum quantities.
Special Construction Options: Options include static dissipating, low/high temperature, oil-resistant, non-marking, and extra backing rubber thickness.
Installation and Maintenance: Proper installation involves reducing center distance for easy belt placement.
General Engineering Information: Includes guidelines for drive installation, alignment, sprocket diameter calculation, and troubleshooting.
Materials and Sprocket Calculations: Materials like cast iron and ductile iron have specific maximum FPM ratings.
Overview: Technical guidelines and specifications for the use of synchronous belt drives.
Flanged Sprockets: To prevent belts from moving axially and riding off sprockets, side flanges are necessary.
Fixed Centers: Fixed center applications are not recommended for synchronous belt drives.
Teeth in Mesh: A minimum of six teeth in mesh is required for full belt capacity transmission.
Belt Pull and Bearing Load Calculations: Outlines how to calculate belt pull and bearing loads.
Use of Idlers: Idlers are used to provide take-up for fixed center drives.
Troubleshooting: Common issues such as excessive edge wear, jacket wear, and pulley tooth wear are addressed.
Adjustable Pitch Sheaves: Covers V-Belt adjustable pitch sheaves.
Overview: Detailed specifications and dimensions for various JVS and 5VS adjustable sheaves.
Specifications: JVS Sheaves, 5VS Sheaves.
Features: Designed for 5V & 8V narrow belts.
Dimensions and Usage: Each sheave model has specific dimensions.
Notes: JVS sheaves use standard 2 Groove “B” or “5V” sheaves as companions.
Overview: Detailed specifications and assembly instructions for Dura-Flex® couplings.
Specifications: Lists dimensions and weights for different coupling models.
Assembly Instructions: Instructions for assembling QD Bushed and Taper-Lock® Bushed couplings.
Performance Characteristics: Outlines the performance ratings for couplings.
Product Features: Key features of Dura-Flex® couplings include easy installation, shock absorption, torsional vibration damping, and chemical resistance.
Additional Products: Mentions other coupling lines like Sure-Flex®, Gear Couplings, Jaw Couplings, and Form-Flex®.
Selection Guidelines: Guidelines for selecting the appropriate coupling based on prime mover type, load characteristics, and service factors.
Specifications and Procedures: Design Horsepower or Torque Calculation, Jaw Couplings Ordering.
Product Features and Design: G-Flex Grid Couplings, Series 1000T10 and 1000T20.
Selection and Application: Coupling Selection Procedure, Application Service Factors.
Key Data from Tables: Coupling dimensions, weight, and maximum bore sizes.
Specifications and Features: Form-Flex® Metal Disc Flexible Couplings.
Service Factors and Selection: Guide on selecting the appropriate coupling based on service factors.
Product Offerings: Form-Flex couplings are available in various designs.
Applications: Used in a wide range of applications.
Material Classes and Design Features: Outlines different material classes for coupling components.
Ordering and Installation: Guidelines for selecting and ordering Form-Flex couplings.
Summary of Technical Document on Couplings and Driven Equipment: Service Factors for Driven Equipment, Coupling Selection Guide, Coupling Hub Options, Engineering Standards and Recommendations, Misalignment Accommodation.
Specifications: Detailed specifications for machinery equipment.
Specifying Tapered Bores: Specific information required for tapered bore hubs.
Product Features and Options: Various series of couplings.
Engineering Standards: Form-Flex® Couplings are discussed with emphasis on balance class.
Bore and Keyway Tolerances: Provides detailed tables of bore tolerances.
Coupling Series Details: Each coupling series is described with its specific features.
Recommendations: Use the appropriate coupling series based on the application requirements.
Overview: Technical specifications and ordering information for various series of couplings.
Specifications: FSH Series, A5 Series, A7 Series, B5 Series, HFTH Series.
Ordering Information: Couplings are sold as complete assemblies.
Key Parameters: Rated Torque and Peak Torque values.
Recommendations: Consult the factory for specific speed ratings.
Overview of TrueTube Composite Tubes: Constructed using filament wound carbon or glass fiber in an epoxy matrix.
Specifications and Models: Detailed specifications for various series of TrueTube composite tubes.
Form-Flex Composite Floating Shaft Couplings: Can be paired with TrueTube composite tubes.
Additional Coupling Types: Describes other coupling types.
Conclusion: TrueTube composite tubes and associated couplings offer significant advantages.
Overview: Overview of Altra Industrial Motion's range of coupling solutions and power transmission products.
Product Categories: Elastomeric Couplings, Gear Spindles and Universal Joints, Torque Limiters and High-Performance Disc & Diaphragm Couplings, Precision Couplings and Locking Devices, General Purpose Disc Couplings, Coupling Guards & Bearing Isolators.
Applications and Industries: Specific applications such as pump applications, foundry operations, and HVAC systems.
Company Background: TB Wood’s, part of Altra Holdings, Inc., has a long history of innovation.
Global Presence: Markets its products under various well-known brands across more than 70 countries.
Contact Information: Provides contact details for various brands and product lines.
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Catalog excerpts

Belt Drives, Sheaves and Couplings-1

Altra Industrial Motion All Customer Service phone numbers shown in bold Couplings Heavy Duty Clutches and Brakes Overrunning Clutches Warner Electric Ameridrives Couplings Wichita Clutch Formsprag Clutch Electromagnetic Clutches and Brakes Mill Spindles, Ameriflex, Ameridisc Pneumatic Clutches and Brakes Overrunning Clutches and Holdbacks Gear Couplings Wichita Falls, TX - USA 1-800-964-3262 Bedford, England +44 (0) 1234 350311 For application assistance: 1-800-348-0881 – Press #2 Twiflex Limited Marland Clutch St Barthelemy d’Anjou, France +33 (0) 2 41 21 24 24 Precision Electric Coils and Electromagnetic Clutches and Brakes Columbia City, IN - USA 1-260-244-6183 Matrix International Electromagnetic Clutches and Brakes, Pressure Operated Clutches and Brakes Brechin, Scotland +44 (0) 1356 602000 New Hartford, CT - USA 1-800-825-6544 Inertia Dynamics Spring Set Brakes; Power On and Wrap Spring Clutch/Brakes San Marcos, TX - USA 1-800-458-0887 Bibby Turboflex Disc, Gear, Grid Couplings, Overload Clutches Twickenham, England +44 (0) 20 8894 1161 Industrial Clutch Pneumatic and Oil Immersed Clutches and Brakes Elastomeric Couplings Chambersburg, PA - USA 1-888-829-6637– Press #5 For application assistance: 1-888-829-6637 – Press #7 General Purpose Disc Couplings San Marcos, TX - USA 1-888-449-9439 Ameridrives Power Transmission Linear Products Universal Joints, Drive Shafts, Mill Gear Couplings Warner Linear Linear Actuators Huco Dynatork Precision Couplings and Air Motors Caliper Brakes and Thrusters Hertford, England +44 (0) 1992 501900 Chambersburg, PA - USA 1-888-829-6637 Roller Ramp and Sprag Type Overrunning Clutches and Backstops South Beloit, IL - USA 1-800-216-3515 Stieber Clutch Overrunning Clutches and Holdbacks Boston Gear Enclosed and Open Gearing, Electrical and Mechanical P.T. Components Belted Drives and Sheaves TB Wood’s Belted Drives For application assistance: 1-888-829-6637 – Press #7 Bauer Gear Motor Engineered Bearing Assemblies Geared Motors Esslingen, Germany +49 (711) 3518 0 Somerset, NJ - USA 1-732-469-8770 Nuttall Gear and Delroyd Worm Gear Kilian Manufacturing Engineered Bearing Assemblies Worm Gear and Helical Speed Reducers Lamiflex Couplings Flexible Couplings, Bearing Isolators, and Coupling Guards For information concerning our sales offices in Asia Pacific check our website www.altramotion.com.cn www.tbwoods.com 440 North Fifth Avenue Chambersburg, PA 17201 - USA 717-264-7161 Fax: 717-264-6420 TB WOOD’S Belt Drives, Sheaves and Couplings Electromagnetic Clutches and Brakes Belt Drives, Sheaves and Couplings

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Belt Drives, Sheaves and Couplings-2

Coupling Solutions for Pump Applications TB Wood’s is an industry leading designer and manufacturer of mechanical power transmission equipment for industrial control. Our mechanical product lines include: clutch and brake, synchronous and belted variable speed drives; grid, disc, jaw, gear coupling and elastomeric coupling products; sheaves and bushings. Registered trademarks include SureFlex®, Dura-Flex®, G-Flex®, and QT Bushings®. V-Belt Drive Solutions for HVAC Applications See Catalog P-1885-TBW TB Wood’s was founded in 1857 and began as a foundry producing wood burning stoves. Our company’s...

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Belt Drives, Sheaves and Couplings-3

Sure-GripTM Bushings (Inch Hardware) Sure-GripTM Bushings (Metric Hardware) Standard QD . . . . . . . . . . . . . . . . . . . .1-4 Standard QD . . . . . . . . . . . . . . . . . . . .1-7 "L" Flangeless . . . . . . . . . . . . . . . . . . .8-9 Short QD Type . . . . . . . . . . . . . . . . .10-11 Tensioners for Idlers . . . . . . . . . . . . . . .12 Idler Bushings . . . . . . . . . . . . . . . . . . . .13 Installation Instructions . . . . . . . . . . . . .14 "L" Flangeless . . . . . . . . . . . . . . . . . . . . .5 Installation Instructions . . . . . . . . . . . . . .6 V-Belt Drives (Narrow) 3V,...

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Belt Drives, Sheaves and Couplings-4

Table Of Contents (Continued) Section Synchronous Drive – Engineering Data Variable & Adjustable Drives Variable Sheaves - All-Pro . . . . . . . . . .1-7 Variable Sheaves - MCS . . . . . . . . . .8-13 Variable Sheaves - MS . . . . . . . . . . .14-23 Variable Sheaves - Roto-Cone . . . . .24-31 Variable Sheaves - Var-A-Cone . . . .32-40 Variable Sheave Interchange . . . . . .41-43 Wide Belt Adjustable - VPS . . . . . . .44-48 Adjustable Motor Bases . . . . . . . . . 49-51 Variable Speed Belts . . . . . . . . . . . .52-53 Companions for Wide Belts . . . . . . .54-56 Adjustable V-Belt Sheaves Light...

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Belt Drives, Sheaves and Couplings-5

General Engineering Information • NEMA Motor Information • Useful Engineering Formulas

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Belt Drives, Sheaves and Couplings-6

NEMA Motor Standards NEMA Frame and H. P. Assignments for Open Type, Polyphase Squirrel-Cage 60 Cycle Motors 3600 RPM T Series Shaft Diameters 3600 RPM Frame Shaft No. TS Series Shaft Diameters H.P. NOTE: Suffix S denotes short shaft motor for direct coupled service. For Belt drives consult motor manufacturer.

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Belt Drives, Sheaves and Couplings-7

NEMA Motor Frame Dimensions DIMENSIONS – INCHES DIMENSIONS – INCHES

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Belt Drives, Sheaves and Couplings-8

Useful Engineering Formulas Horsepower Horsepower (HP) is the rate of doing work. One HP is equal to raising 33,000 lbs. one foot in one min. HP = Force x FPM 33,000 HP = Torque (Inch Pounds) x RPM 63,025 HP = Torque (Foot Pounds) x RPM 5,252 Torque Torque (T) is a turning movement or twisting effort. T (Inch Pounds) = 63,025 x HP RPM T (Inch Pounds) = Force (Pounds) x Lever Arm (Inches) T (Foot Pounds) = Force (Pounds) x Lever Arm (Feet) T (Foot Pounds) = Newton – Meters x .7376 Belt Speed FPM = Diameter (Inches) x RPM x .262 Belt Length To determine the belt length to use for a drive when the...

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Belt Drives, Sheaves and Couplings-9

Wood’s ® Sure-Grip QD Bushings • Provide a True Clamp Fit • Are Easy to Install and Remove • Permit Four-Way Mounting P-1686-TBW

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Belt Drives, Sheaves and Couplings-10

SAE Sure-Grip® Bushings Features Sure-Grip® “Quick Detachable” bushings are easy to install and remove. They are split through flange and taper to provide a true clamp on the shaft that is the equivalent of a shrink fit. All sizes except JA and QT have a setscrew over the key to help maintain the Precise taper (3/4 in. per ft. on diameter) provides proper wedging action. 6-hole drilling (most sizes) makes installation and removal quick and easy. Keyseat 180° from split. Cap screws used to secure bushings to sheave and to remove bushing from sheave. Saw cut through flange and taper (and sometimes...

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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.