Manufactured by CHG Bearing, the 81260 is a precision Cylindrical Roller Thrust Bearings. Key dimensional parameters include a 300 mm bore diameter, a 420 mm outer diameter, and a 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.
81260 - Cylindrical Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81260 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Cylindrical Roller Thrust Bearing |
| Design Type | Single Direction |
| Load Direction | Axial |
| Dimensions | |
| Bore Diameter (d) | 300 mm |
| Outer Diameter (D) | 420 mm |
| Minimum Chamfer Dimension rmin | 3 mm |
| Overall Height H | 95 mm |
| Inner-Ring Land Diameter (L1 / d1) | 304 mm |
| Outer-Ring Land Diameter (L2 / D1) | 415 mm |
| Performance | |
| Limiting Speed – Grease (r/min) | 220 r/min |
| Limiting Speed – Oil-air (r/min) | 320 r/min |
| Basic Static Axial Load Rating C0a (N) | 6480 N |
| Basic Dynamic Axial Load Rating Ca (N) | 1377 N |
| Material | |
| Mass (kg) | 40.5 kg |
81260 420 mm 415 mm 300 mm 304 mm Frequently Asked Questions about 81260 Cylindrical Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 81260 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 300 mm) and steep thermal gradients between inner and outer rings.
The Open Type engineered for 81260 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.
When fitting 81260 over a 300 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
As standard production, CHG Bearing subjects 81260 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.
