REALI-SLIM BALL & ROLLER BEARINGS
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REALI-SLIM BALL & ROLLER BEARINGS
Product catalog summary
Introduction to Reali-Slim® Bearings: Reali-Slim® bearings are engineered for applications that require compact, lightweight, and fully hardened thin-section bearings. They are designed to meet the demands for simplicity, miniaturization, and weight reduction in various rotating devices.
Identification of Reali-Slim® Bearings: These bearings are identified by an 8 or 9-digit part number that indicates material, size, type, precision, and optional internal fit. Materials include AISI 52100 and 440C stainless steel, with options for seals and shields.
Specifications and Series: The catalog provides detailed specifications for different series, including radial thickness and width, covering standard, extended, and extra-extended width options.
New Product Lines: The catalog introduces new sealed metric series bearings and an expanded range of JG series sealed bearings, offering more versatility and availability from stock.
Applications and Engineering: Sections on selection recommendations, capacity and load analysis, mounting recommendations, and precision classes are included. It also covers separator types, ball count, performance, and installation procedures.
Additional Features: A conversion table for English-Metric equivalents is provided, and part number tables are relocated for easier access. The catalog emphasizes compliance with Defense Federal Acquisition Regulations (DFAR).
Conclusion: Reali-Slim® bearings are positioned as industry leaders in thin-section bearings, offering solutions for a wide range of applications, including aerospace, medical devices, and semiconductor manufacturing.
Introduction
The REalI-SlIM® product line includes seven open and five sealed series of thin-section bearings with bore diameters ranging from 1.000 inch to 40.000 inches. These bearings are available in three configurations: radial contact (Type C), angular contact (Type A), and four-point contact (Type X). The catalog also offers variants like REalI-SlIM MM™ metric series, UltRa-SlIM® bearings, and REalI-SlIM tt® series turntable bearings.
Specifications
Standard REalI-SlIM® bearings are manufactured to KaYDoN Precision Class 1 specifications. Materials include AISI 52100 type steel and AISI 440C stainless steel. Bearings are available with various separator options and can be customized for specific requirements, including changes in diametral clearance, preloading, and lubricants.
Design Efficiency
REalI-SlIM® bearings maintain a constant cross-section as bore diameter increases, allowing for standardized components across different product sizes. This design supports the use of large diameter hollow shafts, accommodating components like air and hydraulic lines, resulting in more efficient designs.
Load Support
REalI-SlIM® bearings support radial, axial, and moment loads. The catalog details the configurations for each type of bearing, including radial contact (Type C), angular contact (Type A), and four-point contact (Type X), each suited for different load scenarios.
Product Availability
The catalog provides a comprehensive availability chart for various series and types of bearings, indicating stock availability and lead times for specific configurations.
Quality Control
KaYDoN's quality control procedures are ISO 9001 certified and approved by major aerospace industries. Bearings are marked with part numbers and date codes for traceability and are packaged in heat-sealed plastic bags.
The REalI-SlIM® product line includes seven open and five sealed series of thin-section bearings with bore diameters ranging from 1.000 inch to 40.000 inches. These bearings are available in three configurations: radial contact (Type C), angular contact (Type A), and four-point contact (Type X). The catalog also offers variants like REalI-SlIM MM™ metric series, UltRa-SlIM® bearings, and REalI-SlIM tt® series turntable bearings.
Specifications
Standard REalI-SlIM® bearings are manufactured to KaYDoN Precision Class 1 specifications. Materials include AISI 52100 type steel and AISI 440C stainless steel. Bearings are available with various separator options and can be customized for specific requirements, including changes in diametral clearance, preloading, and lubricants.
Design Efficiency
REalI-SlIM® bearings maintain a constant cross-section as bore diameter increases, allowing for standardized components across different product sizes. This design supports the use of large diameter hollow shafts, accommodating components like air and hydraulic lines, resulting in more efficient designs.
Load Support
REalI-SlIM® bearings support radial, axial, and moment loads. The catalog details the configurations for each type of bearing, including radial contact (Type C), angular contact (Type A), and four-point contact (Type X), each suited for different load scenarios.
Product Availability
The catalog provides a comprehensive availability chart for various series and types of bearings, indicating stock availability and lead times for specific configurations.
Quality Control
KaYDoN's quality control procedures are ISO 9001 certified and approved by major aerospace industries. Bearings are marked with part numbers and date codes for traceability and are packaged in heat-sealed plastic bags.
Overview: The document is a technical catalog from Kaydon Corporation, detailing various series of Reali-Slim® bearings. It includes selection tables for different types of bearings, specifications, and guidelines for use.
Specifications: The catalog provides detailed specifications for several series of bearings, including dimensions, capacities, and approximate weights. Each bearing is listed with its bore, outside diameter, land diameters, and capacities for radial and thrust loads, both static and dynamic.
Selection Tables: The document includes selection tables for different types of bearings such as Type A, C, X, and others. These tables help in choosing the appropriate bearing based on specific requirements like load capacity and dimensions.
Procedures and Recommendations: The catalog advises on the proper selection and installation of bearings. It mentions the need for adjusting running clearance or preload during installation and offers matched sets and spacers for precision applications.
Key Data from Tables: The tables provide critical data such as the maximum shaft or housing fillet radius that the bearing corners will clear, and the dynamic capacities based on a million revolutions of L10 life. Static capacities are based on rigid support from the shaft and housing.
Contact Information: For further assistance, the document provides contact details for Kaydon Corporation, including phone numbers and a website.
Overview: The document is a technical catalog from Kaydon Corporation, detailing specifications and features of their Reali-Slim® bearings. It includes various series of bearings such as KB, KC, KD, KG, and KF, each with specific dimensions, capacities, and weights.
Specifications: Each bearing series is listed with detailed specifications including bore size, outside diameter, land diameters (L1 and L2), radial, thrust, and moment capacities (both static and dynamic), and approximate weight. The capacities are based on specific conditions and are not simultaneous. Static capacities are non-brinell limits based on rigid support from the shaft and housing.
Procedures and Recommendations: The document emphasizes the importance of keeping bearings clean and well-lubricated to maximize their benefits. It discusses the use of seals and shields to retain lubricant and exclude foreign materials. Seals provide more effective protection but require more torque and generate more heat, affecting speed limits.
Seals and Shields: Various types of seals and shields are illustrated, including double-sealed, single-sealed, double LAMI-SEAL®, and double LAMI-SHIELD® bearings. These components are crucial for protecting the bearings and maintaining lubrication.
Additional Information: The catalog notes that sealed bearings are pre-lubricated with general-purpose grease, but operating conditions may necessitate different lubricants. It also provides contact information for Kaydon Corporation for further inquiries regarding lead times and purchase requirements.
Introduction
ENDURaKotE® plating is a protective coating applied to bearings to enhance corrosion resistance and wear resistance. It is applied over conventional bearing materials like AISI 52100 steel, providing benefits similar to stainless steel bearings. The plating is a hard chromium layer that forms a molecular bond, ensuring it does not flake or peel under stress.
Specifications and Properties
Applications and Advantages
ENDURaKotE® plating is suitable for various bearings and materials, offering cost savings by using standard materials while enhancing wear and corrosion resistance. It is particularly beneficial for large diameter bearings or when quick delivery is needed. The plating is not recommended for low torque or torque-sensitive applications.
Selection Tables
The document includes detailed selection tables for different bearing series (e.g., JG, NAA, NA, NB), listing dimensions, capacities, and weights. These tables provide essential data for selecting the appropriate bearing based on specific requirements.
Contact Information
For further inquiries or specific requirements, contact KaYDoN Corporation at their provided phone numbers or visit their website.
ENDURaKotE® plating is a protective coating applied to bearings to enhance corrosion resistance and wear resistance. It is applied over conventional bearing materials like AISI 52100 steel, providing benefits similar to stainless steel bearings. The plating is a hard chromium layer that forms a molecular bond, ensuring it does not flake or peel under stress.
Specifications and Properties
- Hardness: The plating has a hardness exceeding 70 Rockwell “C.”
- Coefficient of Friction: ENDURaKotE® plating reduces friction significantly compared to steel and brass/bronze.
- Adhesion: The plating adheres well, resisting flaking or peeling under stress.
- Corrosion Resistance: It withstands most organic and inorganic compounds, except strong acids, and performs well in salt spray tests.
- Heat Resistance: Bearings with this plating operate effectively between -65°F to 250°F.
- Surface Quality: The plating conforms to the existing surface texture, improving Ra finish slightly.
Applications and Advantages
ENDURaKotE® plating is suitable for various bearings and materials, offering cost savings by using standard materials while enhancing wear and corrosion resistance. It is particularly beneficial for large diameter bearings or when quick delivery is needed. The plating is not recommended for low torque or torque-sensitive applications.
Selection Tables
The document includes detailed selection tables for different bearing series (e.g., JG, NAA, NA, NB), listing dimensions, capacities, and weights. These tables provide essential data for selecting the appropriate bearing based on specific requirements.
Contact Information
For further inquiries or specific requirements, contact KaYDoN Corporation at their provided phone numbers or visit their website.
Overview: This document provides detailed specifications for various series of KAYDON bearings, including NC, ND, NF, NG, NA, NAA, and NB series. Each series is characterized by specific dimensions, radial capacities, and approximate weights. The document also includes information on the EnduraKote®-Plated Endura-Slim® Bearings and RealI-Slim® Bearings.
Specifications:
- NC Series: Bearings in this series have bore sizes ranging from 3.9998 to 24.9998 inches, with static radial capacities from 2,100 to 12,200 pounds and dynamic capacities from 1,073 to 3,941 pounds.
- ND Series: This series features bore sizes from 3.9998 to 29.9998 inches, with static capacities from 3,080 to 20,860 pounds and dynamic capacities from 1,755 to 5,153 pounds.
- NF Series: Bearings have bore sizes from 3.9998 to 39.9998 inches, with static capacities from 5,360 to 45,990 pounds and dynamic capacities from 3,559 to 11,302 pounds.
- NG Series: This series includes bore sizes from 3.9998 to 39.9998 inches, with static capacities from 8,210 to 67,310 pounds and dynamic capacities from 6,115 to 18,307 pounds.
- NA Series: Four-point contact bearings with bore sizes from 2.0000 to 11.9998 inches, capable of handling radial, thrust, and moment loads.
- NAA Series: Smaller bearings with bore sizes from 1.0000 to 1.7500 inches, designed for applications requiring compact dimensions.
- NB Series: Bearings with bore sizes from 2.0000 to 19.9998 inches, offering a balance of radial, thrust, and moment capacities.
Key Features:
- Dynamic capacities are based on 1 million revolutions of L10 life.
- Static capacities are non-brinell limits based on rigid support from the shaft and housing.
- EnduraKote®-Plated Endura-Slim® Bearings are available with Type C radial contact and Type X four-point contact configurations.
- Snapover separators and chamfered bearing corners are standard features.
Recommendations:
- For combined loading, refer to the discussion on bearing selection and load analysis.
- Contact KAYDON product engineering for values related to hybrid series bearings P, X, and Y.
- For lead time and minimum purchase requirements, contact KAYDON directly.
Overview: This document is a technical catalog from KaYDoN Corporation, detailing specifications and capacities of various bearing series, including ND, NG, NF, SA, SB, and SAA series. It provides comprehensive data on dimensions, capacities, and weights of bearings, along with material specifications and application recommendations.
Specifications: The document lists detailed specifications for each bearing series, including bore size, outside diameter, land diameters (L1 and L2), radial, thrust, and moment capacities (both static and dynamic), and approximate weight in pounds. The capacities are based on specific conditions and are not simultaneous, with dynamic capacities based on 1 million revolutions of L10 life.
Material and Design: Bearings are available in AISI 440C stainless steel for high precision and corrosion resistance. They feature snapover separators and are available with different ball sizes. The document emphasizes the importance of chamfered bearing corners and provides maximum shaft or housing fillet radius (F) that the bearing corners will clear.
Application Recommendations: The catalog suggests using stainless steel bearings in environments with corrosive chemicals or where ultra-clean, ready-to-use bearings are required. It also highlights the availability of bearings in radial contact "C," angular contact "A," or four-point contact "X" configurations.
Additional Notes: The document advises contacting KaYDoN for lead time and minimum purchase requirements, and for values related to hybrid series bearings P, X, and Y. It also includes a note on the non-brinell limits of static capacities based on rigid support from the shaft and housing.
Overview: The document is a technical catalog from KaYDoN Corporation detailing their REalI-SlIM® and REalI-SlIM MM™ series of thin-section bearings. It includes specifications, dimensions, capacities, and customization options for various bearing models.
Specifications: The catalog provides detailed specifications for different series of bearings, including dimensions such as bore, outside diameter, and land diameters. It also lists the static and dynamic capacities in terms of radial, axial, and moment loads. The capacities are based on specific conditions and are not simultaneous, requiring consultation for combined loading scenarios.
Procedures and Recommendations: The document advises contacting KaYDoN for lead times, minimum purchase requirements, and for specific values related to hybrid series bearings. It also suggests using the REalI-DESIgN MM® software for detailed load/life and performance data.
Customization Options: The REalI-SlIM MM™ series can be customized with options such as ceramic balls, special lubricants, and integral seals. The bearings are available in cross sections of 8, 13, and 20mm, with bore diameters ranging from 20mm to 360mm.
Identification and Nomenclature: Bearings are identified by a 9- or 10-digit part number that specifies materials, size, type, separator type, and precision. Custom and proprietary bearings have a unique 9-digit number.
Key Data from Tables: The tables provide a comprehensive list of bearing models with their respective dimensions, capacities, and approximate weights. For example, the 8mm series includes models like K02508AR0 with a bore of 25mm and a static radial capacity of 372 kg.
Contact Information: KaYDoN Corporation is based in Muskegon, Michigan, and provides contact details for inquiries and support, including a phone number and website.
Overview: The document is a technical catalog from KaYDoN Corporation, detailing various series of bearings, including REalI-SlIM® and UltRa-SlIM® bearings. It provides specifications, capacities, and application considerations for different types of bearings used in precision engineering applications.
Specifications: The catalog lists multiple series of bearings, each with specific dimensions, capacities, and weights. Key specifications include bore size, outside diameter, land diameters, static and dynamic capacities, and approximate weight. The bearings are categorized by series, such as 8mm, 13mm, and 20mm, with detailed tables providing these specifications.
Procedures and Recommendations: The document advises on the selection and application of bearings, emphasizing the importance of considering combined loading and the rigidity of the shaft and housing. It notes that dynamic capacities are based on 1 million revolutions of l10 life and that static capacities are non-brinell limits.
Norms and Standards: The catalog mentions that the loading limits for UltRa-SlIM® bearings are not based on ABMA standards due to their unique thin cross-section, which allows for size and weight reductions in light to medium-duty applications.
Recommmendations: For applications requiring precise positioning and lightweight designs, such as robotics and satellites, UltRa-SlIM® bearings are recommended. The document also suggests contacting KaYDoN for specific requirements, lead times, and minimum purchase requirements.
Key Data from Tables: The tables provide detailed information on each bearing's dimensions, capacities, and weights. For example, the K02513CP0 bearing has a bore size of 25mm, an outside diameter of 51mm, and static and dynamic capacities of 517kg and 535kg, respectively.
Application Considerations: The document highlights the importance of testing for non-uniform shaft and housing distortions, which can affect bearing performance. It suggests that increased rigidity of the shaft and housing may be necessary to support greater loads.
Overview: The document is a technical catalog from Kaydon Corporation detailing the specifications and applications of their Reali-Slim TT® Series turntable bearings. These bearings are designed for compact, precise applications such as robotics and radar antennae, offering significant design flexibility and performance.
Specifications: The catalog provides detailed specifications for various bearing models, including dimensions, load capacities, and weight. The bearings are available in different configurations, including non-geared, externally geared, and internally geared options. The document includes tables listing part numbers, dimensions, and load capacities for easy selection.
Design Features: The Reali-Slim TT® Series bearings are characterized by their four-point contact design, allowing them to handle radial, axial, and moment loads simultaneously. This design can replace two bearings, simplifying the design process. The bearings are made with AISI-440C steel races and steel-reinforced seals, ensuring durability in harsh environments.
Customization and Installation: The bearings can be customized with various drive options, mounting hole types, and preload configurations to meet specific application needs. They are prelubricated and ready for installation, with mounting holes sized for #4-40 UNC fasteners.
Applications and Engineering: The document discusses the application engineering of the bearings, including selection criteria, capacity, life, load analysis, and mounting considerations. It highlights the importance of precision tolerances and provides guidance on bearing selection based on application requirements.
Conclusion: Kaydon's Reali-Slim TT® Series bearings offer a versatile solution for applications requiring compact, high-performance turntable bearings. Their ability to handle multiple load types and customizable features make them suitable for a wide range of industrial applications.
Specifications and Adjustments
The document discusses the adjustment of bearings by varying spacer lengths, typically equal, and the use of shims for adjustments when the outer race spacer is removed. Bearings are provided as matched pairs with a predetermined internal fit.
Duplexed Bearings
Type A bearings are available as matched sets for adjacent mounting with equal length spacers. Kaydon can supply assemblies with matched ground spacers. Duplexed bearings can be arranged in back-to-back, face-to-face, or tandem configurations, with sets of three or more bearings for additional capacity. Bearings are matched for bore and diameter size, marked for proper orientation, and often preloaded for rigidity.
Type X—Four Point Contact Bearings
Type X bearings feature a unique "gothic arch" configuration allowing four contact points, enabling resistance to radial, thrust, and moment loads. They are assembled similarly to Type C bearings and are designed to be used singularly due to potential friction torque issues when used in pairs.
Capacity, Life, and Load Analysis
Kaydon has updated the method for calculating the dynamic capacity of Reali-Slim® bearings, increasing radial and moment capacities based on test data and modern fatigue life theory. The catalog provides dynamic capacity values based on 1,000,000 revolutions L10 fatigue life, with static load capacities dependent on shaft and housing support. The document advises against applying loads equal to dynamic capacities in actual applications.
Load Analysis
Modern methods allow for more accurate life determination by applying actual loads to bearings and calculating individual ball loads. This process considers primary radial, axial, and moment loading, with larger clearances affecting load distribution and dynamic life. Kaydon provides software for detailed analysis.
Graphical Representations
Figures illustrate ball load distribution and magnitude under various conditions, showing the effects of clearance and preload on load distribution.
The document discusses the adjustment of bearings by varying spacer lengths, typically equal, and the use of shims for adjustments when the outer race spacer is removed. Bearings are provided as matched pairs with a predetermined internal fit.
Duplexed Bearings
Type A bearings are available as matched sets for adjacent mounting with equal length spacers. Kaydon can supply assemblies with matched ground spacers. Duplexed bearings can be arranged in back-to-back, face-to-face, or tandem configurations, with sets of three or more bearings for additional capacity. Bearings are matched for bore and diameter size, marked for proper orientation, and often preloaded for rigidity.
Type X—Four Point Contact Bearings
Type X bearings feature a unique "gothic arch" configuration allowing four contact points, enabling resistance to radial, thrust, and moment loads. They are assembled similarly to Type C bearings and are designed to be used singularly due to potential friction torque issues when used in pairs.
Capacity, Life, and Load Analysis
Kaydon has updated the method for calculating the dynamic capacity of Reali-Slim® bearings, increasing radial and moment capacities based on test data and modern fatigue life theory. The catalog provides dynamic capacity values based on 1,000,000 revolutions L10 fatigue life, with static load capacities dependent on shaft and housing support. The document advises against applying loads equal to dynamic capacities in actual applications.
Load Analysis
Modern methods allow for more accurate life determination by applying actual loads to bearings and calculating individual ball loads. This process considers primary radial, axial, and moment loading, with larger clearances affecting load distribution and dynamic life. Kaydon provides software for detailed analysis.
Graphical Representations
Figures illustrate ball load distribution and magnitude under various conditions, showing the effects of clearance and preload on load distribution.
Capacity, Life, and Load Analysis of Reali-Slim® Ball Bearings
Load Diagram and Calculations:
Figure 3-17 illustrates the mounting of two angular contact bearings under external forces. The diagram specifies radial (Fr), axial (Ft), and moment loads. For load calculations, the KAYDON REALI-DESIGN™ software is recommended.
Variable Load Cases:
Bearings often operate under varying load conditions. Calculating the life of a bearing involves assessing individual load cases and combining them to determine the system life. This involves breaking down the loading into discrete sections and calculating the life for each.
Orientation and Accuracy:
For applications where the bearing axis is near vertical, specific orientation instructions are provided to ensure proper retention. Accuracy considerations include looseness, deflection, and geometric imperfections. Type X bearings are preferred for controlling axial movement due to their internal geometry.
Mounting and Deflection:
Mounting instructions emphasize the importance of preload in reducing deflection. The deflection is non-linear for non-preloaded bearings, while preloaded bearings show linear deflection up to preload relief. Type A bearings are more tolerant of preload than Type X bearings.
Load and Speed Considerations:
Different bearing types are recommended based on load conditions. Type C bearings are ideal for radial loads, while Type X or A bearings are better for significant thrust loads. Speed considerations are crucial, with Type A bearings preferred for high-speed operations.
Friction Torque and Bearing Mounting:
Friction torque is a critical factor in applications requiring minimal driving force. Preload should be avoided to reduce friction. Proper material selection for shafts and housings, along with temperature considerations, are essential for optimal bearing performance.
Precision Tolerances and Recommended Fits:
Precision tolerances for Reali-Slim® ball bearings are provided, with specific recommendations for shaft and housing diameters. These tolerances ensure proper fit and performance under various conditions.
Load Diagram and Calculations:
Figure 3-17 illustrates the mounting of two angular contact bearings under external forces. The diagram specifies radial (Fr), axial (Ft), and moment loads. For load calculations, the KAYDON REALI-DESIGN™ software is recommended.
Variable Load Cases:
Bearings often operate under varying load conditions. Calculating the life of a bearing involves assessing individual load cases and combining them to determine the system life. This involves breaking down the loading into discrete sections and calculating the life for each.
Orientation and Accuracy:
For applications where the bearing axis is near vertical, specific orientation instructions are provided to ensure proper retention. Accuracy considerations include looseness, deflection, and geometric imperfections. Type X bearings are preferred for controlling axial movement due to their internal geometry.
Mounting and Deflection:
Mounting instructions emphasize the importance of preload in reducing deflection. The deflection is non-linear for non-preloaded bearings, while preloaded bearings show linear deflection up to preload relief. Type A bearings are more tolerant of preload than Type X bearings.
Load and Speed Considerations:
Different bearing types are recommended based on load conditions. Type C bearings are ideal for radial loads, while Type X or A bearings are better for significant thrust loads. Speed considerations are crucial, with Type A bearings preferred for high-speed operations.
Friction Torque and Bearing Mounting:
Friction torque is a critical factor in applications requiring minimal driving force. Preload should be avoided to reduce friction. Proper material selection for shafts and housings, along with temperature considerations, are essential for optimal bearing performance.
Precision Tolerances and Recommended Fits:
Precision tolerances for Reali-Slim® ball bearings are provided, with specific recommendations for shaft and housing diameters. These tolerances ensure proper fit and performance under various conditions.
Precision Tolerances and Recommended Fits for Bearings
This document provides detailed specifications for REalI-SlIM® and Endura-Slim® bearings, focusing on precision tolerances and recommended fits. It covers various bearing types, including Type C, X, and A with EnduraKote® plating, and provides guidelines for both inch and metric series bearings.
Specifications
The document outlines the nominal dimensions for bearing bores, outer diameters, and shaft diameters, along with their tolerances. It specifies radial and axial runouts for rotating and stationary shaft mountings. The diametral clearance before installation is also detailed, with a note that actual clearance can vary based on extreme tolerances of bearing, housing, and shaft.
Procedures and Recommendations
Recommended shaft and housing diameters are provided for steel supports with standard bearing diametral clearance. The document advises contacting KaYDoN for design assistance when non-standard conditions such as orientation, temperature, speed, or specific performance characteristics are involved.
Material and Design Features
The document describes various separator types used in bearings, including their design features, materials, and precautions. For example, separators made from brass, nylon, phenolic laminate, and stainless steel are discussed, each with specific applications and temperature limitations.
Performance Considerations
Performance metrics such as limiting speeds, torque, axis deviation, and deflection curves are mentioned. The document also highlights the importance of selecting the appropriate separator type based on application requirements, such as low torque or high temperature conditions.
Contact Information
For further assistance, the document provides contact details for KaYDoN Corporation, including phone numbers and a website for additional resources.
This document provides detailed specifications for REalI-SlIM® and Endura-Slim® bearings, focusing on precision tolerances and recommended fits. It covers various bearing types, including Type C, X, and A with EnduraKote® plating, and provides guidelines for both inch and metric series bearings.
Specifications
The document outlines the nominal dimensions for bearing bores, outer diameters, and shaft diameters, along with their tolerances. It specifies radial and axial runouts for rotating and stationary shaft mountings. The diametral clearance before installation is also detailed, with a note that actual clearance can vary based on extreme tolerances of bearing, housing, and shaft.
Procedures and Recommendations
Recommended shaft and housing diameters are provided for steel supports with standard bearing diametral clearance. The document advises contacting KaYDoN for design assistance when non-standard conditions such as orientation, temperature, speed, or specific performance characteristics are involved.
Material and Design Features
The document describes various separator types used in bearings, including their design features, materials, and precautions. For example, separators made from brass, nylon, phenolic laminate, and stainless steel are discussed, each with specific applications and temperature limitations.
Performance Considerations
Performance metrics such as limiting speeds, torque, axis deviation, and deflection curves are mentioned. The document also highlights the importance of selecting the appropriate separator type based on application requirements, such as low torque or high temperature conditions.
Contact Information
For further assistance, the document provides contact details for KaYDoN Corporation, including phone numbers and a website for additional resources.
Overview of Separator Types in Reali-Slim® Bearings
The document provides a detailed analysis of separator types used in Reali-Slim® bearings, focusing on their specifications, applications, and performance characteristics. The primary function of a bearing separator is to space the rolling elements uniformly to prevent contact and abrasion, which can affect the bearing's life and torque characteristics.
Specifications and Materials
Various materials are used for separators, including PTFE, Vespel® SP-1, stainless steel, phenolic laminate, and aluminum. Each material has specific temperature and speed limitations, such as PTFE being limited to 250°F and Vespel® to 500°F. The choice of material affects the bearing's capacity and suitability for different operating conditions.
Separator Designs
Performance and Limitations
The document discusses the empirical determination of maximum safe operating speeds, influenced by factors such as bearing diameter, type, internal configuration, and lubrication. It provides examples of speed calculations and emphasizes the importance of proper installation and heat dissipation.
Recommendations
For high-speed applications, special attention should be given to lubrication and heat management. Greases and oils should be selected based on their suitability for high-speed bearings, and the design of the lubrication system is crucial for effective operation.
Conclusion
The document serves as a comprehensive guide for selecting and using separators in Reali-Slim® bearings, highlighting the importance of material choice, design considerations, and operational parameters to ensure optimal performance and longevity.
The document provides a detailed analysis of separator types used in Reali-Slim® bearings, focusing on their specifications, applications, and performance characteristics. The primary function of a bearing separator is to space the rolling elements uniformly to prevent contact and abrasion, which can affect the bearing's life and torque characteristics.
Specifications and Materials
Various materials are used for separators, including PTFE, Vespel® SP-1, stainless steel, phenolic laminate, and aluminum. Each material has specific temperature and speed limitations, such as PTFE being limited to 250°F and Vespel® to 500°F. The choice of material affects the bearing's capacity and suitability for different operating conditions.
Separator Designs
- Continuous Ring “Snapover Pocket” Separator: Designed for types C and X bearings, this separator snaps over the balls and is suitable for high-speed applications.
- Continuous Ring Circular Separators: Used in type A bearings, allowing more balls to be used. Available in various materials for different speed and strength requirements.
- Segmental Separators: Suitable for high-temperature applications and where torque variations are a concern. They offer flexibility in design to accommodate expansion and torque issues.
- Formed Wire Separator: Used for maximum ball capacity in type A bearings, suitable for low-speed applications due to wear concerns.
- Toroid and Helical Spring Separators: Provide uniform torque in critical applications but require low speeds and light loads.
Performance and Limitations
The document discusses the empirical determination of maximum safe operating speeds, influenced by factors such as bearing diameter, type, internal configuration, and lubrication. It provides examples of speed calculations and emphasizes the importance of proper installation and heat dissipation.
Recommendations
For high-speed applications, special attention should be given to lubrication and heat management. Greases and oils should be selected based on their suitability for high-speed bearings, and the design of the lubrication system is crucial for effective operation.
Conclusion
The document serves as a comprehensive guide for selecting and using separators in Reali-Slim® bearings, highlighting the importance of material choice, design considerations, and operational parameters to ensure optimal performance and longevity.
Introduction
This document provides detailed technical information on REalI-SlIM® bearings, focusing on torque requirements, factors affecting torque, and the importance of precision in bearing applications.
Specifications
REalI-SlIM® bearings are designed for applications where minimal torque is critical. The document outlines the materials used, such as AISI 52100 for races and balls, and PTFE or Vespel® for cage spacers. Bearings are available with specific torque level specifications.
Factors Affecting Torque
Several factors contribute to the resistance to rotation in bearings, including separator drag, lubricant viscosity, geometric deviations, internal fit-up, and contaminants. The selection of lubricants and the tolerancing of shaft and housing are crucial in managing torque levels.
Lubrication and Tolerancing
The choice of lubricant affects torque, with considerations for operating temperatures, rotation speeds, and lubricant type and quantity. Tolerancing should limit out-of-roundness and out-of-flatness to prevent high torque due to internal preload.
Cleanliness
Maintaining cleanliness is vital for consistent and low torque levels. Contaminants can significantly increase torque, so bearings should remain in their original packaging until installation.
Torque Charts
The document includes charts showing starting torque levels under various conditions. These charts are based on statistical ratings and provide guidance for estimating torque in different scenarios.
Axis Deviation and Deflection
The document discusses axis displacement due to radial, axial, and angular deviations. Equations are provided to calculate these displacements, considering factors like diametral clearance and elastic deflection.
Graphs and Software
Graphs illustrate relationships between axial clearance, diametral clearance, and deflection under loads. KaYDoN Reali-DeSigN™ software is available for more detailed analysis.
Conclusion
REalI-SlIM® bearings are engineered for precision applications where torque minimization is crucial. Proper selection, installation, and maintenance are essential to achieve optimal performance.
This document provides detailed technical information on REalI-SlIM® bearings, focusing on torque requirements, factors affecting torque, and the importance of precision in bearing applications.
Specifications
REalI-SlIM® bearings are designed for applications where minimal torque is critical. The document outlines the materials used, such as AISI 52100 for races and balls, and PTFE or Vespel® for cage spacers. Bearings are available with specific torque level specifications.
Factors Affecting Torque
Several factors contribute to the resistance to rotation in bearings, including separator drag, lubricant viscosity, geometric deviations, internal fit-up, and contaminants. The selection of lubricants and the tolerancing of shaft and housing are crucial in managing torque levels.
Lubrication and Tolerancing
The choice of lubricant affects torque, with considerations for operating temperatures, rotation speeds, and lubricant type and quantity. Tolerancing should limit out-of-roundness and out-of-flatness to prevent high torque due to internal preload.
Cleanliness
Maintaining cleanliness is vital for consistent and low torque levels. Contaminants can significantly increase torque, so bearings should remain in their original packaging until installation.
Torque Charts
The document includes charts showing starting torque levels under various conditions. These charts are based on statistical ratings and provide guidance for estimating torque in different scenarios.
Axis Deviation and Deflection
The document discusses axis displacement due to radial, axial, and angular deviations. Equations are provided to calculate these displacements, considering factors like diametral clearance and elastic deflection.
Graphs and Software
Graphs illustrate relationships between axial clearance, diametral clearance, and deflection under loads. KaYDoN Reali-DeSigN™ software is available for more detailed analysis.
Conclusion
REalI-SlIM® bearings are engineered for precision applications where torque minimization is crucial. Proper selection, installation, and maintenance are essential to achieve optimal performance.
Specifications and Performance:
The document provides detailed specifications for REalI-SlIM® bearings, focusing on radial deflection versus radial load and moment deflection versus moment load for Type X Four-Point Contact bearings. It includes various series such as AA, A, B, C, D, F, and G, each with specific deflection characteristics under different loads.
Inspection Procedures:
Inspection of REalI-SlIM® bearings requires special gaging practices due to their unique proportions. Conventional two-point measurement is not recommended. Instead, air gages or proximity devices should be used to minimize distortion errors. Measurements should be taken at multiple points to determine the true average size. The document emphasizes the importance of cleanliness and proper handling during inspection.
Installation Procedures:
Proper installation is crucial for the accuracy and longevity of REalI-SlIM® bearings. The document outlines the importance of a clean environment and the avoidance of using bearings as gages during machining. It provides guidelines for cleaning and preparing the shaft and housing, and recommends using temperature differences to fit bearings to avoid damage. The document also advises on the correct positioning of duplexed bearings and the protection of bearings from contamination post-installation.
Lubrication and Maintenance:
Lubrication is vital for reducing friction, wear, and preventing corrosion. The document discusses the use of oil, grease, and dry films as lubricants, highlighting their advantages and appropriate applications. It stresses the importance of selecting the right lubricant based on operating conditions and maintaining the correct quantity to avoid overheating. The document also provides guidance on the removal of preservative oils before lubrication and the importance of regular maintenance to ensure optimal bearing performance.
Additional Products:
The document briefly mentions other products such as metric series ball bearings and KT series tapered roller bearings, indicating their availability for demanding applications.
The document provides detailed specifications for REalI-SlIM® bearings, focusing on radial deflection versus radial load and moment deflection versus moment load for Type X Four-Point Contact bearings. It includes various series such as AA, A, B, C, D, F, and G, each with specific deflection characteristics under different loads.
Inspection Procedures:
Inspection of REalI-SlIM® bearings requires special gaging practices due to their unique proportions. Conventional two-point measurement is not recommended. Instead, air gages or proximity devices should be used to minimize distortion errors. Measurements should be taken at multiple points to determine the true average size. The document emphasizes the importance of cleanliness and proper handling during inspection.
Installation Procedures:
Proper installation is crucial for the accuracy and longevity of REalI-SlIM® bearings. The document outlines the importance of a clean environment and the avoidance of using bearings as gages during machining. It provides guidelines for cleaning and preparing the shaft and housing, and recommends using temperature differences to fit bearings to avoid damage. The document also advises on the correct positioning of duplexed bearings and the protection of bearings from contamination post-installation.
Lubrication and Maintenance:
Lubrication is vital for reducing friction, wear, and preventing corrosion. The document discusses the use of oil, grease, and dry films as lubricants, highlighting their advantages and appropriate applications. It stresses the importance of selecting the right lubricant based on operating conditions and maintaining the correct quantity to avoid overheating. The document also provides guidance on the removal of preservative oils before lubrication and the importance of regular maintenance to ensure optimal bearing performance.
Additional Products:
The document briefly mentions other products such as metric series ball bearings and KT series tapered roller bearings, indicating their availability for demanding applications.
Overview: The document provides detailed information about Kaydon's BB Metric Series four-point contact ball bearings, which are dimensionally interchangeable with cross-roller bearings. These bearings offer additional design flexibility and features not commonly available in standard cross-roller bearings, making them suitable for various applications where factors like cost, availability, corrosion resistance, and temperature resistance are critical.
Specifications: The BB Series bearings are available in various sizes to match the bores and widths of common cross-roller bearings. They include features such as ENDURAKOTE® plating for superior corrosion resistance, custom seals for extreme environments, and a range of lubrication options to optimize performance under different conditions.
Design Flexibility: The BB Series provides greater design flexibility with options like custom sealing, application-specific lubrication, and temperature capability. The bearings can operate at higher temperatures due to specialized heat treating procedures.
Performance Features: The document highlights the benefits of ENDURAKOTE® plating, which provides a hard surface that resists peeling and flaking, maintaining corrosion resistance and minimizing surface wear. The bearings also offer various separator options to meet specific application needs.
Technical Data: The document includes detailed tables listing model numbers, dimensions, dynamic capacities, and other technical specifications for the BB Series bearings. These tables provide essential data for selecting the appropriate bearing for specific applications.
Applications: Kaydon's bearings are suitable for demanding applications requiring high precision and corrosion resistance. The document also discusses hybrid bearings, which are ideal for environments with marginal lubrication, offering benefits like low particle generation and high stiffness.
Conclusion: Kaydon's BB Metric Series bearings offer a versatile and high-performance alternative to standard cross-roller bearings, with features that enhance design flexibility and application-specific performance.
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Catalog excerpts
www.kaydonbearings.com Additional REALI-SLIM® bearing sizes and enhanced availablity Reali-Slim® Ball & Roller Bearings Catalog 300 An engineering & product selection guide for thin-section bearings New REALI-SLIM MM™ Metric Series Sealed Bearing Line T u r n i n g I d e a s i n t o E n g i n e e r e d S o l u t i o n s Create space, save weight.
Open the catalog to page 1
REALI-SLIM® Bearings Catalog 300 ©KAYDON® Corporation Issue 10 2 | www.kaydonbearings.com 1-800-514-3066 REALI-SLIM® bearings are marked for complete identification with an (8) or (9) digit part number. Positions 1-8 identify materials, size, type, and precision. Position 9 (optional) identifies non-standard internal fit. Identification of REALI-SLIM® Bearings Position 1 – Material Races/Balls Seals, Shields AA ISI 52100 Steel with O ne seal—PTFE B A ISI 52100 Steel with T wo seals—PTFE D A ISI 52100 Steel with O ne shield E A ISI 52100 Steel with T wo shields F A ISI 52100 Steel with O ne seal—Nitrile...
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©KAYDON® Corporation Issue 10 REALI-SLIM® Bearings Catalog 300 1-800-514-3066 www.kaydonbearings.com |3 Position 3, 4 and 5—Size (Bearing Bore) Numeric Characters Nominal bearing bore in inches multiplied by ten Alphabetic Characters “A” In Position 3 in combination with “A” in Position 2 denotes .187 x .187 Series “A” In Position 3 in combination with “H” in Position 2 denotes .187 x .250 Series “A” In Position 3 in combination with “S” in Position 2 denotes .187 x .312 Series Examples 040 = 4.0" Bore 120 = 12.0" Bore 400 = 40.0" Bore “10” following “AA ” in Positions 2 & 3 = .187 x .187 Series...
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4 | www.kaydonbearings.com 1-800-514-3066 REALI-SLIM® Bearings Catalog 300 ©KAYDON® Corporation Issue 10 For latest releases — catalog, software, or CAD drawing downloads — visit our website www.kaydonbearings.com. REALI-SLIM® thin-section bearings are known around the world for creating design space and saving weight. Design engineers across a wide spectrum of industries have trusted KAYDON since 1941 for precision and reliability in the most demanding applications. Catalog 300 has been relied upon for nearly as long, providing users with the specifications, capacities and sizing charts to choose...
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• Aerospace and astronomy instrumentation • Fixturing and workholding equipment • Food processing equipment • Glassworking equipment • Index and rotary tables • Packaging equipment • Machine tools • Medical devices • Optical scanning equipment • Tire making equipment • Radar, satellite and communications equipment • Robotics • Textile machinery • Tube and pipe cutting machines • Semiconductor manufacturing equipment • Sorting equipment 6 | www.kaydonbearings.com 1-800-514-3066 REALI-SLIM® Bearings Catalog 300 ©KAYDON® Corporation Issue 10 REALI-SLIM®... For Compact, Lightweight Designs of the...
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8| www.kaydonbearings.com 1-800-514-3066 REALI-SLIM® Bearings Catalog 300 ©KAYDON® Corporation Issue 10 Section 1–Introduction The REALI-SLIM® product line consists of a family of seven open (Figure 1-1) and five sealed (Figure 1-2) series of thin-section bearings ranging in bore diameters from 1.000 inch to 40.000 inches. Series range from .187 x .187 inch to 1.000 x 1.000 inch in cross section. Open bearings are available from stock in three configurations (Types A, C & X). Stock sealed bearings are available in Types C & X only. We can provide internal fit up, lubricants, separators and other...
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1-800-514-3066 www.kaydonbearings.com |9 ©KAYDON® Corporation Issue 10 REALI-SLIM® Bearings Catalog 300 Example 30" diameter For all diameters of this rotary table your bearing envelope stays the same. Example 12" diameter Example 4" diameter Design Efficiency REALI-SLIM® Bearings Improve Design Efficiency In REALI-SLIM® bearings, each series is based on a single cross section which remains constant as the bore diameter is increased. This is in sharp contrast to standard bearings in which the cross section increases as the bore diameter increases. The constant cross section of a REALI-SLIM® bearing...
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10 | www.kaydonbearings.com 1-800-514-3066 REALI-SLIM® Bearings Catalog 300 ©KAYDON® Corporation Issue 10 Section 1–Introduction Radial and Axial (Thrust) Loads Bearings support a shaft or housing to permit their free motion about an axis of rotation. Load can be applied to bearings in either of two basic directions (Figure 1-7). Radial loads act at right angles to the shaft (bearing’s axis of rotation). Axial (thrust) acts parallel to the axis of rotation. When these loads are offset from either the bearing axis (distance St) or radial plane (distance Sr), a resulting moment load (M) will be...
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1-800-514-3066 www.kaydonbearings.com |11 ©KAYDON® Corporation Issue 10 REALI-SLIM® Bearings Catalog 300 Section 1–Introduction Angular Contact Bearing (Type A) The Type A Bearing is also a conventional design. It features a circular pocket separator and a 30° contact angle (see Figure 1-9) along with approximately 67% of a full complement of balls. The chief benefit of the Type A bearing is that it provides greater thrust capacity than a Type C or Type X bearing. Because of its counterbored outer race, Type A bearings have unidirectional thrust capacity. Thus, this bearing should be mounted...
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12 | www.kaydonbearings.com 1-800-514-3066 REALI-SLIM® Bearings Catalog 300 ©KAYDON® Corporation Issue 10 Section 1–Introduction Series Type Bore Diameter In Inches 1 112 134 2 212 3 312 4 414 412 434 5 512 6 612 7 712 8 9 10 11 12 14 16 18 20 21 22 25 30 35 40 JHA Series A 316" Radial C • • • Section X • • • KAA Series A • • • 316" Radial C • • • Section X • • • JA Series A 14" Radial C • • • • • • • ] • ] ] ] Section X • • • • • • • ] • ] • • KA Series A • • • • • • • • • • • • • • • ] • ] ] 14" Radial C • • • • • • • • • • • • • • • • • ] • Section X • • • • • • • • • • • • • • • • • ] • JB...
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