Manufactured by CHG Bearing, the 61980 is a precision Deep Groove Ball Bearings（618 / 619 SERIES）. Key dimensional parameters include a 400 mm bore diameter, a 540 mm outer diameter, and a 65 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.
61980 - Deep Groove Ball Bearings（618 / 619 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 61980 |
| 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) | 400 mm |
| Width (B) | 65 mm |
| Outer Diameter (D) | 540 mm |
| Bore Diameter Tolerance | -0.04-0 mm |
| Outside Diameter Tolerance | -0.05-0 mm |
| Width Tolerance | -0.4-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 335 kN |
| Basic Static Radial Load Rating C0r (kN) | 540 kN |
| Limiting Speed – Grease (r/min) | 950 r/min |
| Limiting Speed – Oil (r/min) | 1200 (r/min) |
| Material | |
| Mass (kg) | 42 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 | 0.055-0.145 mm |
61980 540 mm 400 mm 65 mm Frequently Asked Questions about 61980 Deep Groove Ball Bearings（618 / 619 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Built for demanding industrial environments, the 61980 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.
Sourcing 61980 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 Deep Groove Ball Bearings（618 / 619 SERIES）.
To match diverse operational dynamics, CHG Bearing supplies 61980 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.
The CHG Bearing 61980 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.
