Manufactured by CHG Bearing, the 72*122 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.
72*122 - Cylindrical Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 72*122 |
| Brand | CHG® |
| Product Type | Cylindrical Roller |
| Dimensions | |
| Roller Diameter, Dw | 72 mm |
| Roller Length, Lw | 122 mm |
| Center Recess Diameter | 22 mm |
| Through-hole Diameter | 19 mm |
| Center Recess Depth | 2 mm |
| Dimensional & Geometrical Accuracy | |
| Roller Diameter Tolerance | -0.01-0.003 mm |
| Roller Length Tolerance | -0.03 to -0.02 mm |
| Through-hole Runout | 0.03 mm |
| End-face Runout | 0.015 mm |
| Diameter Variation Between Ends | 0.002 mm |
| Roundness | 0.0015 mm |
| Ovality | 0.0015 mm |
| Surface Finish | |
| Outside Diameter Surface Roughness, Ra (µm) | 0.125 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 |
72*122 72 mm 122 mm Frequently Asked Questions about 72*122 Cylindrical Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Beyond standard alloy steel, CHG Bearing can customize the 72*122 Cylindrical Rollers using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for 72*122. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Quality starts with raw material selection: CHG Bearing crafts 72*122 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
Absolutely. The CHG Bearing 72*122 Cylindrical Rollers is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 72*122, FAG 72*122, NSK 72*122. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
