Manufactured by CHG Bearing, the 23*39 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.
23*39 - Cylindrical Rollers
Technical Specifications
| Overview | |
|---|---|
| Part Number | 23*39 |
| Brand | CHG® |
| Product Type | Cylindrical Roller |
| Dimensions | |
| Roller Diameter, Dw | 23 mm |
| Roller Length, Lw | 39 mm |
| Center Recess Diameter | 12 mm |
| Through-hole Diameter | - mm |
| Center Recess Depth | 1 mm |
| Dimensional & Geometrical Accuracy | |
| Roller Diameter Tolerance | -0.025-0.005 mm |
| Roller Length Tolerance | -0.03 to 0 mm |
| Through-hole Runout | - mm |
| End-face Runout | 0.01 mm |
| Diameter Variation Between Ends | 0.002 mm |
| Roundness | 0.0025 mm |
| Ovality | 0.0025 mm |
| Surface Finish | |
| Outside Diameter Surface Roughness, Ra (µm) | 0.16 µm |
| End-face Surface Roughness, Ra (µm) | 0.32 µm |
| Chamfer Geometry | |
| Axial Chamfer | 0.8 mm |
| Axial Chamfer Tolerance | -0.3 to +0.3 mm |
| Radial Chamfer | 0.8 mm |
| Radial Chamfer Tolerance | -0.3 to +0.3 mm |
23*39 23 mm 39 mm Frequently Asked Questions about 23*39 Cylindrical Rollers
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Beyond standard alloy steel, CHG Bearing can customize the 23*39 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.
To ensure optimum performance of CHG Bearing 23*39 Cylindrical Rollers under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the mm bore. For the mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
When fitting 23*39 over a mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Model 23*39 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.
