Manufactured by CHG Bearing, the 21.75*26.61 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.
21.75*26.61 - Tapered Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 21.75*26.61 |
| Brand | CHG® |
| Product Type | Tapered Roller |
| Taper Angle | 1°10' |
| Dimensions | |
| Roller Length, Lw | 26.61 mm |
| Center Recess Diameter | 10 mm |
| Through-hole Diameter | - mm |
| Center Recess Depth | 1 mm |
| Large-end Diameter, Dw | 21.75 mm |
| Spherical End Radius, SR | 507 mm |
| Through-hole Chamfer | - mm |
| Large-end Diameter Tolerance | -0.008 to +0.014 mm |
| Through-hole Coaxiality | - mm |
| Rolling Surface Roughness, Ra (µm) | 0.2 |
| Axial Chamfer — Large End | 0.8 mm |
| Axial Chamfer Tolerance — Large End | -0.3 to +0.3 mm |
| Radial Chamfer — Large End | 0.8 mm |
| Radial Chamfer Tolerance — Large End | -0.3 to +0.3 mm |
| Axial Chamfer — Small End | 0.8 mm |
| Axial Chamfer Tolerance — Small End | -0.3 to +0.3 mm |
| Radial Chamfer — Small End | 0.8 mm |
| Radial Chamfer Tolerance — Small End | -0.3 to +0.3 mm |
| Performance | |
| Spherical End Surface Roughness, Ra (µm) | 0.4 µm |
| Dimensional & Geometrical Accuracy | |
| Roller Length Tolerance | -0.3 to 0 mm |
| End-face Runout | - mm |
| Diameter Variation Between Ends | ±0.005 mm |
| Roundness | 0.003 mm |
| Ovality | 0.003 mm |
21.75*26.61 21.75 mm 26.61 mm 507 mm Frequently Asked Questions about 21.75*26.61 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 21.75*26.61 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.
To extend the trouble-free lifespan of CHG Bearing 21.75*26.61, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Every production batch of CHG Bearing 21.75*26.61 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.
Absolutely. The CHG Bearing 21.75*26.61 Tapered Rollers is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 21.75*26.61, FAG 21.75*26.61, NSK 21.75*26.61. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
