Manufactured by CHG Bearing, the 71901P4 is a precision Angular Contact Ball Bearings（718 / 719 SERIES）. Key dimensional parameters include a 12 mm bore diameter, a 24 mm outer diameter, and a 6 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.
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71901P4 71901P4 |
| Brand | CHG® CHG® |
| Characteristics | |
| Bearing Type | Angular Contact Ball Bearing Angular Contact Ball Bearing |
| Series | 719 719 |
| Seal Type | Open / Contact Seal Options Open / Contact Seal Options |
| Load Direction | Radial Radial |
| Row Configuration | Single Row Single Row |
| Dimensions | |
| Bore Diameter (d) | 12 mm |
| Width (B) | 6 mm |
| Outer Diameter (D) | 24 mm |
| Bore Diameter Tolerance | -0.004-0 mm |
| Outside Diameter Tolerance | -0.005-0 mm |
| Width Tolerance | -0.08-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr | 3.2 kN 0.72 klbf |
| Basic Static Radial Load Rating C0r | 1.77 kN 0.4 klbf |
| Limiting Speed – Grease | 38000 r/min 38000 r/min |
| Limiting Speed – Oil | 53000 (r/min) 53000 (r/min) |
| Material | |
| Mass | 0.011 kg 0.0243 lb |
| Ring Material | Stainless Steel / Bearing Steel Stainless Steel / Bearing Steel |
| Cage Material | Brass / PEEK / Polyimide / Phenolic Resin Fabric Laminate Brass / PEEK / Polyimide / Phenolic Resin Fabric Laminate |
| Ball Material | Stainless Steel / Bearing Steel / Ceramic Stainless Steel / Bearing Steel / Ceramic |
| Operating Temperature Range | -50 to +100 °C -50 to +100 °C |
| Precision Class | P4 P4 |
| Radial Internal Clearance | 0.003-0.018 mm |
71901P4 24 mm 12 mm 6 mm Frequently Asked Questions about 71901P4 Angular Contact Ball Bearings（718 / 719 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 71901P4. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
The CHG Bearing 71901P4 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.
To safeguard CHG Bearing 71901P4 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (12 mm x 24 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Beyond standard alloy steel, CHG Bearing can customize the 71901P4 Angular Contact Ball Bearings（718 / 719 SERIES） using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
