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Representative product photographs. Appearance varies by bearing size and design.
30311
Single Row Tapered Roller Bearing
A separable bearing with tapered rollers and raceways, designed for combined radial and axial loading. The inner ring, roller and cage assembly can be mounted separately from the outer ring.
For axial loading in both directions, single row bearings are used in a suitable paired arrangement. Confirm the operating clearance or preload for the application.
30311 Dimensions
Source: supplied GB/T 297-94, page 4. Linear dimensions in mm. — = not provided.
| Symbol | Value | Description |
|---|---|---|
| d | 55 | Bore diameter |
| D | 120 | Outside diameter |
| T | 31.5 | Overall bearing width |
| B | 29 | Inner ring width |
| C | 25 | Outer ring width |
| r₁, r₂ min. | 2.5 | Inner ring minimum chamfer dimensions |
| r₃, r₄ min. | 2 | Outer ring minimum chamfer dimensions |
| α | 12°57′10″ | Nominal contact angle (GB/T drawing) |
| E | 99.146 | Outer ring nominal small inside diameter |
30311 Dimension Drawing
Schematic section, not to scale. Dimension values follow the supplied catalogue data. Not a manufacturing drawing.
Additional Dimensions
Additional mounting dimensions, speed limits, cage specification and tolerances require model-specific confirmation. Please contact AOSN for model-specific confirmation. — = not provided in the supplied standard.