Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Self-aligning ball bearings | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 52 mm |
| Width | B | 21 mm |
| Basic dynamic load rating | C | 18.2 kN |
| Basic static load rating | C0 | 4.75 kN |
| Fatigue load limit | Pu | 0.24 kN |
| Reference speed | nref | 26000 r/min |
| Limiting speed | nG | 19000 r/min |
| Mass | ≈m | 0.227 kg |
| Internal clearance | CN | |
| Sealing | Without | |
| Cage | Machined brass | |
| Bearing material | Bearing steel | |
| Lubricant | None |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 20.0 mm | |
| Outside diameter | 52.0 mm | |
| Width | 21.0 mm |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Self-aligning ball bearings | |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/self-aligning-ball-bearings | |
| Structure group ID | BJ1_001 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Abutment dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Abutment diameter shaft | d a | min. 27 mm |
| Abutment diameter housing | D a | max. 45 mm |
| Fillet radius | r a | max. 1.1 mm |
Engineering — Calculation data11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 18.2 kN |
| Basic static load rating | C 0 | 4.75 kN |
| Fatigue load limit | P u | 0.24 kN |
| Reference speed | 26000 r/min | |
| Limiting speed | 19000 r/min | |
| Permissible angular misalignment | α | 3 ° |
| Calculation factor | k r | 0.05 |
| Limiting value | e | 0.52 |
| Calculation factor | Y 0 | 1.3 |
| Calculation factor | Y 1 | 1.2 |
| Calculation factor | Y 2 | 1.9 |
Engineering — Dimensions6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 20 mm |
| Outside diameter | D | 52 mm |
| Width | B | 21 mm |
| Shoulder diameter inner ring | d 1 | ≈ 29.15 mm |
| Shoulder diameter outer ring | D 1 | ≈ 41.624 mm |
| Chamfer dimension | r 1,2 | min. 1.1 mm |
Engineering — Engineering specifications1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Bore type | Cylindrical |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 0.227 kg | |
| eClass code | 23-05-08-06 | |
| UNSPSC code | 31171532 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 18.2 kN | |
| Basic static load rating | 4.75 kN | |
| Reference speed | 26000.0 r/min | |
| Limiting speed | 19000.0 r/min |
Properties13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Retaining feature, inner ring | None | |
| Locating feature, bearing outer ring | Without | |
| Number of rows | 2 | |
| Bore type | Cylindrical | |
| Cage | Machined brass | |
| Radial internal clearance | CN | |
| Tolerance class | Normal | |
| Material, bearing | Bearing steel | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication feature | Without | |
| Indicative carbon footprint for new product | 0.84 kg CO 2 e |
