Manufactured by CHG Bearing, the 81264 is a precision Cylindrical Roller Thrust Bearings. Key dimensional parameters include a 320 mm bore diameter, a 440 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.
81264 - Cylindrical Roller Thrust Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81264 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Cylindrical Roller Thrust Bearing |
| Design Type | Single Direction |
| Load Direction | Axial |
| Dimensions | |
| Bore Diameter (d) | 320 mm |
| Outer Diameter (D) | 440 mm |
| Minimum Chamfer Dimension rmin | 3 mm |
| Overall Height H | 95 mm |
| Inner-Ring Land Diameter (L1 / d1) | 325 mm |
| Outer-Ring Land Diameter (L2 / D1) | 435 mm |
| Performance | |
| Limiting Speed – Grease (r/min) | 200 r/min |
| Limiting Speed – Oil-air (r/min) | 300 r/min |
| Basic Static Axial Load Rating C0a (N) | 6750 N |
| Basic Dynamic Axial Load Rating Ca (N) | 1400 N |
| Material | |
| Mass (kg) | 42.5 kg |
81264 440 mm 435 mm 320 mm 325 mm Frequently Asked Questions about 81264 Cylindrical Roller Thrust Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Each 81264 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 (320 mm bore side) ensures perfect planar contact without edge binding.
In its sealed configuration (Open Type), CHG Bearing pre-charges 81264 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies 81264 with a precision bore diameter (d) of 320 mm, an outside diameter (D) of 440 mm, and a nominal ring width (B) of mm. This configuration yields an effective cross-sectional wall thickness of 0 mm and an envelope ratio (D/d) of 0, delivering compact rigidity for OEM machinery housings.
Model 81264 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 320 mm) and steep thermal gradients between inner and outer rings.
