Manufactured by CHG Bearing, the HKF065AP4 is a precision Thin Section Angular Contact Ball Bearings. Key dimensional parameters include a 165.1 mm bore diameter, a 203.2 mm outer diameter, and a 19.05 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.

HKF065AP4 - Thin Section Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | HKF065AP4 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Angular Contact Ball Bearing |
| Series | KF |
| Seal Type | Open |
| Load Direction | Combined Radial and Unidirectional Axial |
| Row Configuration | Single Row |
| Dimensions | |
| Bore Diameter (d) | 165.1 mm |
| Width (B) | 19.05 mm |
| Outer Diameter (D) | 203.2 mm |
| Bore Diameter Tolerance | -0.0076-0 mm |
| Outside Diameter Tolerance | -0.01-0 mm |
| Width Tolerance | -0.127-0 mm |
| Inner-Ring Land Diameter (L1 / d1) | 179.197 mm |
| Outer-Ring Land Diameter (L2 / D1) | 189.103 mm |
| Counterbore Diameter L3 | 193.3702 mm |
| Performance | |
| Basic Static Radial Load Rating C0r (N) | 43430 N |
| Basic Dynamic Radial Load Rating Cr (N) | 21040 N |
| Basic Static Axial Load Rating C0a (N) | 125440 N |
| Basic Dynamic Axial Load Rating Ca (N) | 49870 N |
| Material | |
| Mass (kg) | 1.35 kg |
| Ring Material | Stainless Steel / Bearing Steel |
| Cage Material | Brass / PEEK / Polyimide / Phenolic Resin Fabric Laminate |
| Ball Material | Stainless Steel / Bearing Steel / Ceramic |
| Operating Temperature Range (°C) | -50 to +100 °C °C |
| Precision Class | P4 |
| Radial Internal Clearance | N/A mm |
HKF065AP4 203.2 mm 165.1 mm 19.05 mm Frequently Asked Questions about HKF065AP4 Thin Section Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Each HKF065AP4 produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (165.1 mm bore side) ensures perfect planar contact without edge binding.
As standard production, CHG Bearing subjects HKF065AP4 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
The CHG Bearing HKF065AP4 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
Engineered according to international ISO boundary plans, CHG Bearing supplies HKF065AP4 with a precision bore diameter (d) of 165.1 mm, an outside diameter (D) of 203.2 mm, and a nominal ring width (B) of 19.05 mm. This configuration yields an effective cross-sectional wall thickness of 19.0 mm and an envelope ratio (D/d) of 1.23, delivering compact rigidity for OEM machinery housings.
