Metric single-row tapered roller bearings
30321 Tapered Roller Bearing Dimensions & Specifications
30321 tapered roller bearing: 105 mm bore (d), 225 mm outside diameter (D), 53.5 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 | 105 mm |
|---|---|
| Outside diameter D | 225 mm |
| Overall width T | 53.5 mm |
| Inner-ring width B | 49 mm |
| Outer-ring width C | 41 mm |
| Mass | 9.11 kg |
| Catalogue dynamic load Cr | 395 kN |
| Catalogue static load Cor | 470 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 202 mm |
|---|---|
| Abutment dimension Db Db | 214 mm |
| Abutment dimension da da | 136 mm |
| Abutment dimension db db | 121 mm |
| Minimum chamfer r12 r12 | 4 mm |
| Minimum chamfer r34 r34 | 3 mm |
| Factor Y Y | 1.7 |
| Factor Y0 Y0 | 0.95 |
| Factor e e | 0.35 |
| Maximum fillet ra ra | 3 mm |
| Maximum fillet rb rb | 2.5 mm |
| Load centre dimension a a | 43.5 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 30321?
For 30321, the complete bearing width T is 53.5 mm; the inner-ring width B is 49 mm. The outer-ring width C is 41 mm. Check T against the assembly drawing; the separate ring widths describe different parts.
Which mounting dimensions are listed for 30321?
The 30321 catalogue lists da = 136 mm; Da = 202 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 30321?
The catalogue reference mass for 30321 is 9.11 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.