Manufactured by CHG Bearing, the 51*57.1 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.
51*57.1 - Tapered Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 51*57.1 |
| Brand | CHG® |
| Product Type | Tapered Roller |
| Taper Angle | 3° |
| Dimensions | |
| Roller Length, Lw | 57.1 mm |
| Center Recess Diameter | - mm |
| Through-hole Diameter | 15 mm |
| Center Recess Depth | - mm |
| Large-end Diameter, Dw | 51 mm |
| Spherical End Radius, SR | 463 mm |
| Through-hole Chamfer | - mm |
| Large-end Diameter Tolerance | -0.02 to +0.02 mm |
| Through-hole Coaxiality | 0.1 mm |
| Rolling Surface Roughness, Ra (µm) | 0.32 |
| Axial Chamfer — Large End | 1.5 mm |
| Axial Chamfer Tolerance — Large End | -0.2 to +0.2 mm |
| Radial Chamfer — Large End | 1.2 mm |
| Radial Chamfer Tolerance — Large End | -0.2 to +0.2 mm |
| Axial Chamfer — Small End | 1.2 mm |
| Axial Chamfer Tolerance — Small End | -0.2 to +0.2 mm |
| Radial Chamfer — Small End | 1.5 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 | -0.5 to 0 mm |
| End-face Runout | - mm |
| Diameter Variation Between Ends | - mm |
| Roundness | 0.004 mm |
| Ovality | 0.004 mm |
51*57.1 51 mm 57.1 mm 463 mm Frequently Asked Questions about 51*57.1 Tapered Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Built for demanding industrial environments, the 51*57.1 Tapered Rollers 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.
Standard batches of CHG Bearing 51*57.1 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
Model 51*57.1 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.
Yes, 100% of 51*57.1 Tapered Rollers leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
