Metric single-row tapered roller bearings
30248 Tapered Roller Bearing Dimensions & Specifications
30248 tapered roller bearing: 240 mm bore (d), 440 mm outside diameter (D), 79 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 | 240 mm |
|---|---|
| Outside diameter D | 440 mm |
| Overall width T | 79 mm |
| Inner-ring width B | 72 mm |
| Outer-ring width C | 60 mm |
| Mass | 45.2 kg |
| Catalogue dynamic load Cr | 990 kN |
| Catalogue static load Cor | 1400 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 401 mm |
|---|---|
| Abutment dimension Db Db | 422 mm |
| Abutment dimension da da | 290 mm |
| Abutment dimension db db | 267 mm |
| Minimum chamfer r12 r12 | 5 mm |
| Minimum chamfer r34 r34 | 4 mm |
| Factor Y Y | 1.4 |
| Factor Y0 Y0 | 0.74 |
| Factor e e | 0.44 |
| Maximum fillet ra ra | 4 mm |
| Maximum fillet rb rb | 3 mm |
| Load centre dimension a a | 85.1 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 30248?
For 30248, the complete bearing width T is 79 mm; the inner-ring width B is 72 mm. The outer-ring width C is 60 mm. Check T against the assembly drawing; the separate ring widths describe different parts.
Which mounting dimensions are listed for 30248?
The 30248 catalogue lists da = 290 mm; Da = 401 mm; ra ≤ 4 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 30248?
The catalogue reference mass for 30248 is 45.2 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.