Manufactured by CHG Bearing, the 76.4*80.58 is a precision Tapered Rollers. Key dimensional parameters include a mm bore diameter, a 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.
76.4*80.58 - Tapered Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 76.4*80.58 |
| Brand | CHG® |
| Product Type | Tapered Roller |
| Taper Angle | 1°45' |
| Dimensions | |
| Roller Length, Lw | 80.58 mm |
| Center Recess Diameter | 45 mm |
| Through-hole Diameter | 18 mm |
| Center Recess Depth | 2 mm |
| Large-end Diameter, Dw | 76.4 mm |
| Spherical End Radius, SR | 1188 mm |
| Through-hole Chamfer | - mm |
| Large-end Diameter Tolerance | -0.015 to +0.03 mm |
| Through-hole Coaxiality | 0.225 mm |
| Rolling Surface Roughness, Ra (µm) | 0.32 |
| Axial Chamfer — Large End | 2 mm |
| Axial Chamfer Tolerance — Large End | -0.2 to +0.2 mm |
| Radial Chamfer — Large End | 2 mm |
| Radial Chamfer Tolerance — Large End | -0.2 to +0.2 mm |
| Axial Chamfer — Small End | 2.5 mm |
| Axial Chamfer Tolerance — Small End | -0.2 to +0.2 mm |
| Radial Chamfer — Small End | 2.5 mm |
| Radial Chamfer Tolerance — Small End | -0.2 to +0.2 mm |
| Performance | |
| Spherical End Surface Roughness, Ra (µm) | 0.4 µm |
| Dimensional & Geometrical Accuracy | |
| Roller Length Tolerance | -0.6 to 0 mm |
| End-face Runout | - mm |
| Diameter Variation Between Ends | - mm |
| Roundness | 0.0025 mm |
| Ovality | 0.0025 mm |
76.4*80.58 76.4 mm 80.58 mm 1188 mm Frequently Asked Questions about 76.4*80.58 Tapered Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
In its sealed configuration (Open Type), CHG Bearing pre-charges 76.4*80.58 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.
Every production batch of CHG Bearing 76.4*80.58 Tapered Rollers comes with complete traceability. Upon shipment, CHG Bearing can provide EN 10204 3.1 Material Test Reports (MTR), Certificates of Conformity (CoC), spectral chemical composition analysis, and dimensional inspection sheets.
Each 76.4*80.58 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 ( mm bore side) ensures perfect planar contact without edge binding.
Model 76.4*80.58 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 mm) and steep thermal gradients between inner and outer rings.
