Manufactured by CHG Bearing, the 71906 is a precision Angular Contact Ball Bearings（718 / 719 SERIES）. Key dimensional parameters include a 30 mm bore diameter, a 47 mm outer diameter, and a 9 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.
71906 - Angular Contact Ball Bearings（718 / 719 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71906 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Angular Contact Ball Bearing |
| Series | 719 |
| Seal Type | Open / Contact Seal Options |
| Load Direction | Radial |
| Row Configuration | Single Row |
| Dimensions | |
| Bore Diameter (d) | 30 mm |
| Width (B) | 9 mm |
| Outer Diameter (D) | 47 mm |
| Bore Diameter Tolerance | -0.01-0 mm |
| Outside Diameter Tolerance | -0.011-0 mm |
| Width Tolerance | -0.12-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 7.85 kN |
| Basic Static Radial Load Rating C0r (kN) | 5.95 kN |
| Limiting Speed – Grease (r/min) | 18000 r/min |
| Limiting Speed – Oil (r/min) | 24000 (r/min) |
| Material | |
| Mass (kg) | 0.019 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 |
| Precision Class | P0 |
| Radial Internal Clearance | 0.005-0.02 mm |
71906 47 mm 30 mm 9 mm Frequently Asked Questions about 71906 Angular Contact Ball Bearings（718 / 719 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Built for demanding industrial environments, the 71906 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies 71906 with a precision bore diameter (d) of 30 mm, an outside diameter (D) of 47 mm, and a nominal ring width (B) of 9 mm. This configuration yields an effective cross-sectional wall thickness of 8.5 mm and an envelope ratio (D/d) of 1.57, delivering compact rigidity for OEM machinery housings.
The CHG Bearing 71906 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.
Quality starts with raw material selection: CHG Bearing crafts 71906 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
