Manufactured by CHG Bearing, the 718/850 is a precision Angular Contact Ball Bearings（718 / 719 SERIES）. Key dimensional parameters include a 850 mm bore diameter, a 1030 mm outer diameter, and a 82 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.
718/850 - Angular Contact Ball Bearings（718 / 719 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 718/850 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Angular Contact Ball Bearing |
| Series | 718 |
| Seal Type | Open / Contact Seal Options |
| Load Direction | Radial |
| Row Configuration | Single Row |
| Dimensions | |
| Bore Diameter (d) | 850 mm |
| Width (B) | 82 mm |
| Outer Diameter (D) | 1030 mm |
| Bore Diameter Tolerance | -0.10-0 mm |
| Outside Diameter Tolerance | -0.125-0 mm |
| Width Tolerance | -1-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 620 kN |
| Basic Static Radial Load Rating C0r (kN) | 1674 kN |
| Limiting Speed – Grease (r/min) | 340 r/min |
| Limiting Speed – Oil (r/min) | 450 (r/min) |
| Material | |
| Mass (kg) | 140 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 | 0.140-0.320 mm |
718/850 1030 mm 850 mm 82 mm Frequently Asked Questions about 718/850 Angular Contact Ball Bearings（718 / 719 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing 718/850 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (850 mm x 1030 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Model 718/850 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 850 mm) and steep thermal gradients between inner and outer rings.
Beyond standard alloy steel, CHG Bearing can customize the 718/850 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.
In its sealed configuration (Open / Contact Seal Options), CHG Bearing pre-charges 718/850 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
