Manufactured by CHG Bearing, the 3706/379 is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 379 mm bore diameter, a 681.5 mm outer diameter, and a 307 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.
3706/379 - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 3706/379 |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 350000 |
| Number of Rows | Double Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 379 mm |
| Width (B) | 307 mm |
| Outer Diameter (D) | 681.5 mm |
| Bore Diameter Tolerance | 0 – +0.025 mm |
| Outside Diameter Tolerance | 0 – +0.051 mm |
| Inner Ring Chamfer | SP mm |
| Outer Ring Chamfer | SP mm |
| Inner Ring Assembly Width Tolerance | -0.508 – +0.711 mm |
| Outer Ring Assembly Width | 196.85 mm |
| Outer Ring Assembly Width Tolerance | -0.508 – +0.711 mm |
| Shaft Abutment Diameter | 262 mm |
| Housing Abutment Diameter | 445 mm |
| Lubrication Hole Diameter | 7 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 2990 kN |
| Basic Static Load Rating C0 (kN) | 5770 kN |
| Material | |
| Mass (kg) | 230 kg |
| Ring Material | Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 14 mm |
| Roller Material | Bearing Steel |
3706/379 681.5 mm 379 mm Frequently Asked Questions about 3706/379 Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To safeguard CHG Bearing 3706/379 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (379 mm x 681.5 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Yes, 100% of 3706/379 Double Row Tapered Roller Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
Engineered according to international ISO boundary plans, CHG Bearing supplies 3706/379 with a precision bore diameter (d) of 379 mm, an outside diameter (D) of 681.5 mm, and a nominal ring width (B) of 307 mm. This configuration yields an effective cross-sectional wall thickness of 151.2 mm and an envelope ratio (D/d) of 1.8, delivering compact rigidity for OEM machinery housings.
To ensure optimum performance of CHG Bearing 3706/379 Double Row Tapered Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 379 mm bore. For the 681.5 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
