Metric single-row tapered roller bearings
31320 Tapered Roller Bearing Dimensions & Specifications
31320 tapered roller bearing: 100 mm bore (d), 215 mm outside diameter (D), 56.5 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 | 100 mm |
|---|---|
| Outside diameter D | 215 mm |
| Overall width T | 56.5 mm |
| Inner-ring width B | 51 mm |
| Outer-ring width C | 35 mm |
| Mass | 8.6 kg |
| Catalogue dynamic load Cr | 374 kN |
| Catalogue static load Cor | 465 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 168 mm |
|---|---|
| Abutment dimension Db Db | 202 mm |
| Abutment dimension da da | 121 mm |
| Abutment dimension db db | 114 mm |
| Minimum chamfer r12 r12 | 4 mm |
| Minimum chamfer r34 r34 | 3 mm |
| Factor Y Y | 0.72 |
| Factor Y0 Y0 | 0.4 |
| Factor e e | 0.83 |
| Maximum fillet ra ra | 2.5 mm |
| Maximum fillet rb rb | 2.5 mm |
| Load centre dimension a a | 65 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 31320?
For 31320, the complete bearing width T is 56.5 mm; the inner-ring width B is 51 mm. The outer-ring width C is 35 mm. Check T against the assembly drawing; the separate ring widths describe different parts.
Which mounting dimensions are listed for 31320?
The 31320 catalogue lists da = 121 mm; Da = 168 mm; ra ≤ 2.5 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 31320?
The catalogue reference mass for 31320 is 8.6 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.