Metric single-row tapered roller bearings
31326 Tapered Roller Bearing Dimensions & Specifications
31326 tapered roller bearing: 130 mm bore (d), 280 mm outside diameter (D), 72 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 | 130 mm |
|---|---|
| Outside diameter D | 280 mm |
| Overall width T | 72 mm |
| Inner-ring width B | 66 mm |
| Outer-ring width C | 44 mm |
| Mass | 19.4 kg |
| Catalogue dynamic load Cr | 600 kN |
| Catalogue static load Cor | 830 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 262 mm |
|---|---|
| Abutment dimension Db Db | 261 mm |
| Abutment dimension da da | 148 mm |
| Abutment dimension db db | 157 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 | 5 mm |
| Maximum fillet rb rb | 4 mm |
| Load centre dimension a a | 87 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 31326?
For 31326, the complete bearing width T is 72 mm; the inner-ring width B is 66 mm. The outer-ring width C is 44 mm. Check T against the assembly drawing; the separate ring widths describe different parts.
Which mounting dimensions are listed for 31326?
The 31326 catalogue lists da = 148 mm; Da = 262 mm; ra ≤ 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 31326?
The catalogue reference mass for 31326 is 19.4 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.