Manufactured by CHG Bearing, the NU29/1246 is a precision Single Row Cylindrical Roller Bearings. Key dimensional parameters include a 1246 mm bore diameter, a 1630 mm outer diameter, and a 218 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.
NU29/1246 - Single Row Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NU29/1246 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Single Row Cylindrical Roller Bearing |
| Number of Rows | Single Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 1246 mm |
| Width (B) | 218 mm |
| Outer Diameter (D) | 1630 mm |
| Bore Diameter Tolerance | -0.125 – 0 mm |
| Outside Diameter Tolerance | -0.20 – 0 mm |
| Width Tolerance | -1.25 – 0 mm |
| Enveloping Circle Diameter Fw | 1345 mm |
| Inner Ring Chamfer | 7.5 min mm |
| Outer Ring Chamfer | 7.5 min mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 8950 kN |
| Basic Static Load Rating C0 (kN) | 21500 kN |
| Material | |
| Mass (kg) | 1230 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Brass |
NU29/1246 1630 mm 1246 mm 218 mm 1345 mm Frequently Asked Questions about NU29/1246 Single Row Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To ensure optimum performance of CHG Bearing NU29/1246 Single Row Cylindrical Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 1246 mm bore. For the 1630 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Built for demanding industrial environments, the NU29/1246 Single Row Cylindrical Roller Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
Standard batches of CHG Bearing NU29/1246 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
As standard production, CHG Bearing subjects NU29/1246 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
