Manufactured by CHG Bearing, the 55.5*120.65 is a precision Cylindrical 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.
55.5*120.65 - Cylindrical Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 55.5*120.65 |
| Brand | CHG® |
| Product Type | Cylindrical Roller |
| Dimensions | |
| Roller Diameter, Dw | 55.5 mm |
| Roller Length, Lw | 120.65 mm |
| Center Recess Diameter | 26 mm |
| Through-hole Diameter | - mm |
| Center Recess Depth | 2 mm |
| Dimensional & Geometrical Accuracy | |
| Roller Diameter Tolerance | -0.01-0.003 mm |
| Roller Length Tolerance | -0.02 to -0.01 mm |
| Through-hole Runout | - mm |
| End-face Runout | 0.01 mm |
| Diameter Variation Between Ends | 0.002 mm |
| Roundness | 0.002 mm |
| Ovality | 0.002 mm |
| Surface Finish | |
| Outside Diameter Surface Roughness, Ra (µm) | 0.14 µm |
| End-face Surface Roughness, Ra (µm) | 0.22 µm |
| Chamfer Geometry | |
| Axial Chamfer | 2.5 mm |
| Axial Chamfer Tolerance | -0.2 to +0.2 mm |
| Radial Chamfer | 2.5 mm |
| Radial Chamfer Tolerance | -0.2 to +0.2 mm |
55.5*120.65 55.5 mm 120.65 mm Frequently Asked Questions about 55.5*120.65 Cylindrical Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing 55.5*120.65 Cylindrical Rollers is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 55.5*120.65, FAG 55.5*120.65, NSK 55.5*120.65. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Yes, 100% of 55.5*120.65 Cylindrical 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.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 55.5*120.65, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 55.5*120.65 correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
