Manufactured by CHG Bearing, the 71812 CD/P4DFA is a precision Super-precision Angular Contact Ball Bearings. Key dimensional parameters include a 60 mm bore diameter, a 78 mm outer diameter, and a 20 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.
71812 CD/P4DFA - Super-precision Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71812 CD/P4DFA |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Angular Contact Ball Bearing |
| Number of Rows | 2 |
| Contact Type | Normal Contact (Two-point Contact) |
| Ring Type | Integral Inner and Outer Rings |
| Design | High-capacity D Design |
| Universally Matchable | No |
| Matched Arrangement | Face-to-face (DF) |
| Number of Bearings in Set | 2 |
| Axial Clearance / Preload | Extra-light Preload |
| Tolerance Class | P4 |
| Bearing Material | Bearing Steel |
| Sealing | Open |
| Dimensions | |
| Bore Diameter (d) | 60 mm |
| Width (B) | 20 mm |
| Outer Diameter (D) | 78 mm |
| Contact Angle α (°) | 15 ° |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 22.1 kN |
| Basic Static Load Rating C₀ (kN) | 28.5 kN |
| Material | |
| Weight (kg) | 0.2 kg |
71812 CD/P4DFA 78 mm 60 mm 20 mm Frequently Asked Questions about 71812 CD/P4DFA Super-precision Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
In its sealed configuration (Open Type), CHG Bearing pre-charges 71812 CD/P4DFA 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.
Each 71812 CD/P4DFA produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (60 mm bore side) ensures perfect planar contact without edge binding.
Built for demanding industrial environments, the 71812 CD/P4DFA Super-precision Angular Contact Ball Bearings 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.
Model 71812 CD/P4DFA 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 60 mm) and steep thermal gradients between inner and outer rings.
