Manufactured by CHG Bearing, the NU18/1250 is a precision Single Row Cylindrical Roller Bearings. Key dimensional parameters include a 1250 mm bore diameter, a 1500 mm outer diameter, and a 112 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.
NU18/1250 - Single Row Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NU18/1250 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Single Row Cylindrical Roller Bearing |
| Number of Rows | Single Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 1250 mm |
| Width (B) | 112 mm |
| Outer Diameter (D) | 1500 mm |
| Bore Diameter Tolerance | -0.125 – 0 mm |
| Outside Diameter Tolerance | -0.16 – 0 mm |
| Width Tolerance | -1.25 – 0 mm |
| Enveloping Circle Diameter Fw | 1316 mm |
| Inner Ring Chamfer | 6 min mm |
| Outer Ring Chamfer | 6 min mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 3770 kN |
| Basic Static Load Rating C0 (kN) | 9970 kN |
| Material | |
| Mass (kg) | 399 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Brass |
NU18/1250 1500 mm 1250 mm 112 mm 1316 mm Frequently Asked Questions about NU18/1250 Single Row Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing NU18/1250 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (1250 mm x 1500 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
To ensure optimum performance of CHG Bearing NU18/1250 Single Row Cylindrical Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 1250 mm bore. For the 1500 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Model NU18/1250 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 1250 mm) and steep thermal gradients between inner and outer rings.
The CHG Bearing NU18/1250 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
