Manufactured by CHG Bearing, the 71968 is a precision Angular Contact Ball Bearings（718 / 719 SERIES）. Key dimensional parameters include a 340 mm bore diameter, a 440 mm outer diameter, and a 38 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.
71968 - Angular Contact Ball Bearings（718 / 719 SERIES）
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71968 |
| 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) | 340 mm |
| Width (B) | 38 mm |
| Outer Diameter (D) | 440 mm |
| Bore Diameter Tolerance | -0.04-0 mm |
| Outside Diameter Tolerance | -0.045-0 mm |
| Width Tolerance | -0.4-0 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 219 kN |
| Basic Static Radial Load Rating C0r (kN) | 345 kN |
| Limiting Speed – Grease (r/min) | 950 r/min |
| Limiting Speed – Oil (r/min) | 1400 (r/min) |
| Material | |
| Mass (kg) | 11.1 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 | 0.045-0.125 mm |
71968 440 mm 340 mm 38 mm Frequently Asked Questions about 71968 Angular Contact Ball Bearings（718 / 719 SERIES）
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The Open / Contact Seal Options engineered for 71968 by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
In its sealed configuration (Open / Contact Seal Options), CHG Bearing pre-charges 71968 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.
To match diverse operational dynamics, CHG Bearing supplies 71968 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.
Absolutely. The CHG Bearing 71968 Angular Contact Ball Bearings（718 / 719 SERIES） is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 71968, FAG 71968, NSK 71968. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
