Manufactured by CHG Bearing, the HWAD420HP4 is a precision Super Duplex Angular Contact Ball Bearings. Key dimensional parameters include a 31.75 mm bore diameter, a 38.1 mm outer diameter, and a 7.937 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.
HWAD420HP4 - Super Duplex Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | HWAD420HP4 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super Duplex Angular Contact Ball Bearing |
| Series | AD4 |
| Seal Type | Open / Single-Sided Sealed / Double-Sided Sealed |
| Load Direction | Combined Radial and Axial |
| Row Configuration | Double Row |
| Dimensions | |
| Bore Diameter (d) | 31.75 mm |
| Width (B) | 7.937 mm |
| Outer Diameter (D) | 38.1 mm |
| Outside Diameter Tolerance | -0.005-0 mm |
| Width Tolerance | -0.38-0 mm |
| Inner-Ring Land Diameter (L1 / d1) | 33.8709 mm |
| Outer-Ring Land Diameter (L2 / D1) | 35.98926 mm |
| Counterbore Diameter L3 | N/A mm |
| Performance | |
| Basic Static Radial Load Rating C0r (N) | 2540 N |
| Basic Dynamic Radial Load Rating Cr (N) | 1640 N |
| Basic Static Axial Load Rating C0a (N) | 1530 N |
| Basic Dynamic Axial Load Rating Ca (N) | N/A N |
| Material | |
| Mass (kg) | 0.015Kg kg |
| Ring Material | Stainless Steel / Bearing Steel |
| Cage Material | Brass / Polyimide / PEEK / Phenolic Resin / Phenolic Resin Fabric Laminate |
| Ball Material | Ceramic / Stainless Steel / Bearing Steel |
| Operating Temperature Range (°C) | -50 to +100 °C °C |
| Precision Class | P4 |
| Radial Internal Clearance | N/A mm |
HWAD420HP4 38.1 mm 31.75 mm 7.937 mm 35.98926 mm 33.8709 mm Frequently Asked Questions about HWAD420HP4 Super Duplex Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting HWAD420HP4 over a 31.75 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.
As standard production, CHG Bearing subjects HWAD420HP4 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 HWAD420HP4 with a precision bore diameter (d) of 31.75 mm, an outside diameter (D) of 38.1 mm, and a nominal ring width (B) of 7.937 mm. This configuration yields an effective cross-sectional wall thickness of 3.2 mm and an envelope ratio (D/d) of 1.2, delivering compact rigidity for OEM machinery housings.
To match diverse operational dynamics, CHG Bearing supplies HWAD420HP4 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.
