Manufactured by CHG Bearing, the M278749DW/M278710 is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 571.5 mm bore diameter, a 812.8 mm outer diameter, and a 285.75 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.
M278749DW/M278710 - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | M278749DW/M278710 |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | Class 3 |
| Dimensions | |
| Bore Diameter (d) | 571.5 mm |
| Width (B) | 285.75 mm |
| Outer Diameter (D) | 812.8 mm |
| Bore Diameter Tolerance | 0 – +0.025 mm |
| Outside Diameter Tolerance | 0 – +0.038 mm |
| Inner Ring Chamfer | 3.2 min mm |
| Outer Ring Chamfer | 6.4 min mm |
| Inner Ring Assembly Width Tolerance | N/A mm |
| Outer Ring Assembly Width | 285.75 mm |
| Outer Ring Assembly Width Tolerance | -0.762 – +0.762 mm |
| Shaft Abutment Diameter | 620 mm |
| Housing Abutment Diameter | 750 mm |
| Lubrication Hole Diameter | 20 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 6510 kN |
| Basic Static Load Rating C0 (kN) | 17500 kN |
| Material | |
| Mass (kg) | 513 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 32.4 mm |
| Roller Material | Case-Hardened Steel / Bearing Steel |
M278749DW/M278710 812.8 mm 571.5 mm Frequently Asked Questions about M278749DW/M278710 Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To extend the trouble-free lifespan of CHG Bearing M278749DW/M278710, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Engineered according to international ISO boundary plans, CHG Bearing supplies M278749DW/M278710 with a precision bore diameter (d) of 571.5 mm, an outside diameter (D) of 812.8 mm, and a nominal ring width (B) of 285.75 mm. This configuration yields an effective cross-sectional wall thickness of 120.6 mm and an envelope ratio (D/d) of 1.42, delivering compact rigidity for OEM machinery housings.
Sourcing M278749DW/M278710 directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Double Row Tapered Roller Bearings.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing M278749DW/M278710 correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
