Metric single-row tapered roller bearings
33121 Tapered Roller Bearing Dimensions & Specifications
33121 tapered roller bearing: 105 mm bore (d), 175 mm outside diameter (D), 56 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 | 175 mm |
| Overall width T | 56 mm |
| Inner-ring width B | 56 mm |
| Outer-ring width C | 44 mm |
| Mass | 5.33 kg |
| Catalogue dynamic load Cr | 360 kN |
| Catalogue static load Cor | 607 kN |
Mounting dimensions & additional parameters (12)
| Abutment dimension Da Da | 150 mm |
|---|---|
| Abutment dimension Db Db | 169 mm |
| Abutment dimension da da | 117 mm |
| Abutment dimension db db | 116 mm |
| Minimum chamfer r12 r12 | 2.5 mm |
| Minimum chamfer r34 r34 | 2 mm |
| Factor Y Y | 1.48 |
| Factor Y0 Y0 | 0.82 |
| Factor e e | 0.4 |
| Maximum fillet ra ra | 2 mm |
| Maximum fillet rb rb | 2 mm |
| Load centre dimension a a | 43.2 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 33121?
For 33121, the complete bearing width T is 56 mm; the inner-ring width B is 56 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 33121?
The 33121 catalogue lists da = 117 mm; Da = 150 mm; ra ≤ 2 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 33121?
The catalogue reference mass for 33121 is 5.33 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.