Manufactured by CHG Bearing, the HKD040XP0 is a precision Thin Section Four-Point Contact Ball Bearings. Key dimensional parameters include a 101.6 mm bore diameter, a 127 mm outer diameter, and a 12.7 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.

HKD040XP0 - Thin Section Four-Point Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | HKD040XP0 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four-Point Contact Ball Bearing |
| Series | KD |
| Seal Type | Open |
| Load Direction | Radial, Bidirectional Axial and Moment |
| Row Configuration | Single Row |
| Dimensions | |
| Bore Diameter (d) | 101.6 mm |
| Width (B) | 12.7 mm |
| Outer Diameter (D) | 127 mm |
| Bore Diameter Tolerance | -0.02-0 mm |
| Outside Diameter Tolerance | -0.015-0 mm |
| Width Tolerance | -0.127-0 mm |
| Inner-Ring Land Diameter (L1 / d1) | 110.998 mm |
| Outer-Ring Land Diameter (L2 / D1) | 117.602 mm |
| Counterbore Diameter L3 | N/A mm |
| Performance | |
| Basic Static Radial Load Rating C0r (N) | 13690 N |
| Basic Dynamic Radial Load Rating Cr (N) | 10270 N |
| Basic Static Axial Load Rating C0a (N) | 34230 N |
| Basic Dynamic Axial Load Rating Ca (N) | 15650 N |
| Material | |
| Mass (kg) | 0.366 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 | -0.066-0.041 mm |
HKD040XP0 127 mm 101.6 mm 12.7 mm Frequently Asked Questions about HKD040XP0 Thin Section Four-Point Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects HKD040XP0 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies HKD040XP0 with a precision bore diameter (d) of 101.6 mm, an outside diameter (D) of 127 mm, and a nominal ring width (B) of 12.7 mm. This configuration yields an effective cross-sectional wall thickness of 12.7 mm and an envelope ratio (D/d) of 1.25, delivering compact rigidity for OEM machinery housings.
Each HKD040XP0 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 (101.6 mm bore side) ensures perfect planar contact without edge binding.
To match diverse operational dynamics, CHG Bearing supplies HKD040XP0 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
