Manufactured by CHG Bearing, the 71801P4 is a precision Angular Contact Ball Bearings（718 / 719 SERIES）. Key dimensional parameters include a 12 mm bore diameter, a 21 mm outer diameter, and a 5 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 | 71801P4 71801P4 |
| Brand | CHG® CHG® |
| Characteristics | |
| Bearing Type | Angular Contact Ball Bearing Angular Contact Ball Bearing |
| Series | 718 718 |
| 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) | 5 mm |
| Outer Diameter (D) | 21 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 | 2 kN 0.45 klbf |
| Basic Static Radial Load Rating C0r | 1.4 kN 0.31 klbf |
| Limiting Speed – Grease | 70000 r/min 70000 r/min |
| Limiting Speed – Oil | 110000 (r/min) 110000 (r/min) |
| Material | |
| Mass | 0.006 kg 0.0132 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 |
71801P4 21 mm 12 mm 5 mm Frequently Asked Questions about 71801P4 Angular Contact Ball Bearings（718 / 719 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Sourcing 71801P4 directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Angular Contact Ball Bearings（718 / 719 SERIES）.
To match diverse operational dynamics, CHG Bearing supplies 71801P4 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.
Built for demanding industrial environments, the 71801P4 Angular Contact Ball Bearings（718 / 719 SERIES） by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
Model 71801P4 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 12 mm) and steep thermal gradients between inner and outer rings.
