Manufactured by CHG Bearing, the 381072 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 360 mm bore diameter, a 540 mm outer diameter, and a 325 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.
381072 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 381072 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 360 mm |
| Width (B) | 325 mm |
| Outer Diameter (D) | 540 mm |
| Bore Diameter Tolerance | -0.040 – 0 mm |
| Outside Diameter Tolerance | -0.050 – 0 mm |
| Inner Ring Chamfer | 5 min mm |
| Outer Ring Chamfer | 4 min mm |
| Inner Ring Assembly Width Tolerance | -0.8 – +0.8 mm |
| Outer Ring Assembly Width | 325 mm |
| Outer Ring Assembly Width Tolerance | -0.8 – +0.8 mm |
| Shaft Abutment Diameter | 380 mm |
| Housing Abutment Diameter | 504 mm |
| Lubrication Hole Diameter | 8 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 3388 kN |
| Basic Static Load Rating C0 (kN) | 6524 kN |
| Material | |
| Mass (kg) | 248 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Rolling Element Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | Grade 45 Steel / 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 16 mm |
381072 540 mm 360 mm 325 mm Frequently Asked Questions about 381072 Four-Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing 381072 Four-Row Tapered Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 381072, FAG 381072, NSK 381072. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Each 381072 produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (360 mm bore side) ensures perfect planar contact without edge binding.
Built for demanding industrial environments, the 381072 Four-Row Tapered 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.
To safeguard CHG Bearing 381072 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (360 mm x 540 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
