Manufactured by CHG Bearing, the 477752 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 260 mm bore diameter, a 400 mm outer diameter, and a 330 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.
477752 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 477752 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 260 mm |
| Width (B) | 330 mm |
| Outer Diameter (D) | 400 mm |
| Bore Diameter Tolerance | -0.035 – 0 mm |
| Outside Diameter Tolerance | -0.040 – 0 mm |
| Inner Ring Chamfer | 5 min mm |
| Outer Ring Chamfer | 2 min mm |
| Inner Ring Assembly Width Tolerance | -0.7 – +0.7 mm |
| Outer Ring Assembly Width | 284 mm |
| Outer Ring Assembly Width Tolerance | -0.7 – +0.7 mm |
| Shaft Abutment Diameter | 282 mm |
| Housing Abutment Diameter | 418 mm |
| Lubrication Hole Diameter | 6 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 3260 kN |
| Basic Static Load Rating C0 (kN) | 7600 kN |
| Material | |
| Mass (kg) | 168 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 | 12 mm |
477752 400 mm 260 mm 330 mm Frequently Asked Questions about 477752 Four-Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The CHG Bearing 477752 is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
To match diverse operational dynamics, CHG Bearing supplies 477752 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
Engineered according to international ISO boundary plans, CHG Bearing supplies 477752 with a precision bore diameter (d) of 260 mm, an outside diameter (D) of 400 mm, and a nominal ring width (B) of 330 mm. This configuration yields an effective cross-sectional wall thickness of 70.0 mm and an envelope ratio (D/d) of 1.54, delivering compact rigidity for OEM machinery housings.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 477752 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.
