Manufactured by CHG Bearing, the 81629/81963D is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 159.951 mm bore diameter, a 244.475 mm outer diameter, and a 107.95 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.
81629/81963D - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 81629/81963D |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 159.951 mm |
| Width (B) | 107.95 mm |
| Outer Diameter (D) | 244.475 mm |
| Bore Diameter Tolerance | 0 – +0.051 mm |
| Outside Diameter Tolerance | 0 – +0.076 mm |
| Inner Ring Chamfer | 3.3 min mm |
| Outer Ring Chamfer | 6.4 min mm |
| Inner Ring Assembly Width Tolerance | -0.19 – +0.038 mm |
| Outer Ring Assembly Width | 223.838 mm |
| Outer Ring Assembly Width Tolerance | -0.762 – +0.762 mm |
| Shaft Abutment Diameter | 490.5 mm |
| Housing Abutment Diameter | 585 mm |
| Lubrication Hole Diameter | 10 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 3830 kN |
| Basic Static Load Rating C0 (kN) | 9990 kN |
| Material | |
| Mass (kg) | 227 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 18 mm |
| Roller Material | Case-Hardened Steel / Bearing Steel |
81629/81963D 244.475 mm 159.951 mm 107.95 mm Frequently Asked Questions about 81629/81963D Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting 81629/81963D over a 159.951 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.
To safeguard CHG Bearing 81629/81963D against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (159.951 mm x 244.475 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for 81629/81963D, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
As standard production, CHG Bearing subjects 81629/81963D 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.
