Manufactured by CHG Bearing, the HKA055XP0 is a precision Thin Section Four-Point Contact Ball Bearings. Key dimensional parameters include a 139.7 mm bore diameter, a 152.4 mm outer diameter, and a 6.35 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.
HKA055XP0 - Thin Section Four-Point Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | HKA055XP0 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four-Point Contact Ball Bearing |
| Series | KA |
| Seal Type | Open |
| Load Direction | Radial, Bidirectional Axial and Moment |
| Row Configuration | Single Row |
| Dimensions | |
| Bore Diameter (d) | 139.7 mm |
| Width (B) | 6.35 mm |
| Outer Diameter (D) | 152.4 mm |
| Bore Diameter Tolerance | -0.025-0 mm |
| Outside Diameter Tolerance | -0.025-0 mm |
| Width Tolerance | -0.127-0 mm |
| Inner-Ring Land Diameter (L1 / d1) | 144.4244 mm |
| Outer-Ring Land Diameter (L2 / D1) | 147.6756 mm |
| Counterbore Diameter L3 | N/A mm |
| Performance | |
| Basic Static Radial Load Rating C0r (N) | 7780 N |
| Basic Dynamic Radial Load Rating Cr (N) | 4040 N |
| Basic Static Axial Load Rating C0a (N) | 19380 N |
| Basic Dynamic Axial Load Rating Ca (N) | 6580 N |
| Material | |
| Mass (kg) | 0.118 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 | P0 |
| Radial Internal Clearance | -0.076-0.051 mm |
HKA055XP0 152.4 mm 139.7 mm 6.35 mm Frequently Asked Questions about HKA055XP0 Thin Section Four-Point Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing HKA055XP0 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (139.7 mm x 152.4 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
The Open engineered for HKA055XP0 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
In its sealed configuration (Open), CHG Bearing pre-charges HKA055XP0 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
When fitting HKA055XP0 over a 139.7 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
