Overview

This document is an excerpt from the KaYDoN® Corporation's REalI-SlIM® Bearings Catalog 300, Issue 10. It provides detailed technical specifications and selection tables for various series of angular contact bearings, specifically the KAA, KA, KB, KC, KD, KG, and KF series. The bearings are designed for applications requiring radial and thrust load capacities with precise dimensional and load capacity data.

Sections and Content Summary

1. Bearing Series Specifications

The document lists multiple bearing series with detailed dimensional and load capacity data:

• KAA Series: Small bore sizes from 1.000 to 1.750 inches with radial and thrust load capacities and approximate weights.
• KA Series: Bore sizes from 2.000 to 12.000 inches, with detailed dimensions (bore, outside diameter, land diameters L1 and L2, counterbore diameter L3), radial and thrust static and dynamic load capacities, and approximate weights.
• KB Series: Bore sizes from 2.000 to 20.000 inches, similar dimensional and load capacity data as KA series but with larger ball sizes (5/32" balls) and higher load capacities.
• KC Series: Bore sizes from 4.000 to 30.000 inches, with larger dimensions and load capacities, using 3/16" balls.
• KD Series: Bore sizes from 4.000 to 30.000 inches, with even larger dimensions and load capacities, using 1/4" balls.
• KG Series: Bore sizes from 4.000 to 40.000 inches, designed for very high load capacities, using 3/8" balls.
• KF Series: Bore sizes from 4.000 to 40.000 inches, the largest ball size (1/2" balls) and highest load capacities among the series.

2. Dimensions and Load Capacities

Each bearing entry includes:

• Dimensions: Bore diameter, outside diameter, land diameters L1 and L2, counterbore diameter L3, and maximum fillet radius clearance (F).
• Load Capacities: Radial and thrust static and dynamic capacities in pounds. Dynamic capacities are based on 1 million revolutions at L10 life. Static capacities are non-Brinell limits assuming rigid support.
• Approximate Weight: Weight of each bearing in pounds.

Notes clarify that capacities are not simultaneous and combined loading requires further analysis. Hybrid series bearings (P, X, Y) have different published capacities and require consultation with KaYDoN engineering.

3. Bearing Types and Features

Type A Angular Contact Bearings: These are deep groove bearings with a reduced shoulder on one side of the inner or outer race ball path. They feature a snapover assembly allowing a one-piece circular pocket ring separator and a greater ball complement. They accept radial and single-direction thrust loads and are typically used in pairs. Stock bearings are individual units requiring adjustment at installation for clearance or preload. Matched sets and spacers for extra precision are available from KaYDoN.

4. Separator and Ball Size Information

The document specifies the circular pocket separator and ball sizes used for each series, which affect the bearing corner fillet radius clearance (F) and overall bearing performance:

• KAA and KA series use 3/32" and 1/8" balls with fillet radius clearance of .015 to .025 inches.
• KB series uses 5/32" balls with .040 inch fillet clearance.
• KC series uses 3/16" balls with .040 inch fillet clearance.
• KD series uses 1/4" balls with .060 inch fillet clearance.
• KG series uses 3/8" balls with .080 inch fillet clearance.
• KF series uses 1/2" balls with .080 inch fillet clearance.

5. Notes and Recommendations

• Capacities listed are not simultaneous; combined loading requires consulting the bearing selection and load analysis guidelines.
• Dynamic capacities are based on 1 million revolutions at L10 life.
• Static capacities are non-Brinell limits assuming rigid support from shaft and housing.
• Fillet radius clearance (F) is critical for bearing corner fit and must be considered in shaft or housing design.
• Some bearing sizes are marked with an asterisk (*) indicating that customers should contact KaYDoN for lead time and minimum purchase requirements.
• Matched sets and spacers are available for applications requiring extra precision and can be provided directly from the factory.

Critical Parameters and Limitations

• Load Capacities: Radial and thrust static and dynamic load limits must be respected to ensure bearing life and performance.
• Dimensional Fit: Bore, outside diameter, land diameters, and counterbore diameters must be matched to application requirements.
• Fillet Radius Clearance: Maximum fillet radius (F) must be observed to avoid interference with bearing corners.
• Installation: Type A bearings require adjustment at installation for clearance or preload unless matched sets are used.
• Hybrid Bearings: Different load capacities apply; consult KaYDoN engineering.

Summary

This catalog section provides comprehensive technical data for selecting KaYDoN REalI-SlIM® angular contact bearings across multiple series and sizes. It includes precise dimensional data, load capacities, and installation notes essential for engineers and designers to specify the correct bearing for their application. The document emphasizes the importance of considering combined loads, fillet radius clearance, and the availability of matched sets for precision applications.