Metric single-row tapered roller bearings
31330 Tapered Roller Bearing Dimensions & Specifications
31330 tapered roller bearing: 150 mm bore (d), 320 mm outside diameter (D), 82 mm overall width (T). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 150 mm |
|---|---|
| Outside diameter D | 320 mm |
| Overall width T | 82 mm |
| Inner-ring width B | 75 mm |
| Outer-ring width C | 50 mm |
| Mass | 28.9 kg |
| Catalogue dynamic load Cr | 765 kN |
| Catalogue static load Cor | 1080 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 302 mm |
|---|---|
| Abutment dimension Db Db | 300 mm |
| Abutment dimension da da | 168 mm |
| Abutment dimension db db | 181 mm |
| Minimum chamfer r12 r12 | 5 mm |
| Minimum chamfer r34 r34 | 4 mm |
| Factor Y Y | 0.7 |
| Factor Y0 Y0 | 0.4 |
| Factor e e | 0.83 |
| Maximum fillet ra ra | 3 mm |
| Maximum fillet rb rb | 3 mm |
| Load centre dimension a a | 100 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which width should I use when checking 31330?
For 31330, the complete bearing width T is 82 mm; the inner-ring width B is 75 mm. The outer-ring width C is 50 mm. Check T against the assembly drawing; the separate ring widths describe different parts.
Which mounting dimensions are listed for 31330?
The 31330 catalogue lists da = 168 mm; Da = 302 mm; ra ≤ 3 mm. Check these symbols against the bearing drawing and the shaft/housing shoulders; they are not shaft or housing fit tolerances.
What is the reference mass of 31330?
The catalogue reference mass for 31330 is 28.9 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.