Metric single-row tapered roller bearings
30221 Tapered Roller Bearing Dimensions & Specifications
30221 tapered roller bearing: 105 mm bore (d), 190 mm outside diameter (D), 39 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 | 190 mm |
| Overall width T | 39 mm |
| Inner-ring width B | 36 mm |
| Outer-ring width C | 30 mm |
| Mass | 4.52 kg |
| Catalogue dynamic load Cr | 280 kN |
| Catalogue static load Cor | 365 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 172 mm |
|---|---|
| Abutment dimension Db Db | 182 mm |
| Abutment dimension da da | 127 mm |
| Abutment dimension db db | 116 mm |
| Minimum chamfer r12 r12 | 3 mm |
| Minimum chamfer r34 r34 | 2.5 mm |
| Factor Y Y | 1.4 |
| Factor Y0 Y0 | 0.79 |
| Factor e e | 0.42 |
| Maximum fillet ra ra | 2.5 mm |
| Maximum fillet rb rb | 2 mm |
| Load centre dimension a a | 38.1 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 30221?
For 30221, the complete bearing width T is 39 mm; the inner-ring width B is 36 mm. The outer-ring width C is 30 mm. Check T against the assembly drawing; the separate ring widths describe different parts.
Which mounting dimensions are listed for 30221?
The 30221 catalogue lists da = 127 mm; Da = 172 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 30221?
The catalogue reference mass for 30221 is 4.52 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.