Manufactured by CHG Bearing, the 618/850P4 is a precision Deep Groove Ball Bearings（618 / 619 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.
618/850P4 - Deep Groove Ball Bearings（618 / 619 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 618/850P4 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Deep Groove Ball Bearing |
| 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 | / mm |
| Outside Diameter Tolerance | / mm |
| Width Tolerance | / mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 559 kN |
| Basic Static Radial Load Rating C0r (kN) | 1430 kN |
| Limiting Speed – Grease (r/min) | 410 r/min |
| Limiting Speed – Oil (r/min) | 470 (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 | P4 |
| Radial Internal Clearance | 0.140-0.320 mm |
618/850P4 1030 mm 850 mm 82 mm Frequently Asked Questions about 618/850P4 Deep Groove Ball Bearings（618 / 619 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 618/850P4 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.
Built for demanding industrial environments, the 618/850P4 Deep Groove Ball Bearings（618 / 619 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.
As standard production, CHG Bearing subjects 618/850P4 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.
To match diverse operational dynamics, CHG Bearing supplies 618/850P4 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.
