Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications14 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Spherical roller bearings | |
| Bore diameter | d | 25 mm |
| Outside diameter | D | 52 mm |
| Width | B | 23 mm |
| Basic dynamic load rating | C | 49.9 kN |
| Basic static load rating | C0 | 44 kN |
| Fatigue load limit | Pu | 4.75 kN |
| Limiting speed | nG | 780 r/min |
| Mass | ≈m | 0.21 kg |
| Precision class | Normal | |
| Internal clearance | CN | |
| Sealing | Seal on both sides | |
| Cage | Sheet metal | |
| Lubricant | Food grade grease |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 25.0 mm | |
| Outside diameter | 52.0 mm | |
| Width | 23.0 mm |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Spherical roller bearings | |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/spherical-roller-bearings | |
| Structure group ID | BS2_001 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Abutment dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 29.8 mm |
| Diameter of shaft abutment | d a | max. 30 mm |
| Diameter of housing abutment | D a | max. 46.4 mm |
| Radius of fillet | r a | max. 1 mm |
Engineering — Calculation data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| SKF performance class | SKF Explorer | |
| Basic dynamic load rating | C | 49.9 kN |
| Basic static load rating | C 0 | 44 kN |
| Fatigue load limit | P u | 4.75 kN |
| Limiting speed | 780 r/min | |
| Limiting value | e | 0.35 |
| Calculation factor | Y 1 | 1.9 |
| Calculation factor | Y 2 | 2.9 |
| Calculation factor | Y 0 | 1.8 |
Engineering — Dimensions12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 25 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.01 to 0 mm |
| Outside diameter | D | 52 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.013 to 0 mm |
| Width | B | 23 mm |
| Deviation limits of ring width | t ΔBs | -0.06 to 0 mm |
| Shoulder diameter of inner ring | d 2 | ≈ 30 mm |
| Shoulder/recess diameter of outer ring | D 1 | ≈ 46.6 mm |
| Width of lubrication groove | b | 4.4 mm |
| Diameter of lubrication hole | K | 2 mm |
| Chamfer dimension | r 1,2 | min. 1 mm |
| ISO tolerance class for dimensions | Normal |
Engineering — Engineering specifications1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Bore type | Cylindrical |
Engineering — Radial internal clearance2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum initial clearance | 25 µm | |
| Maximum initial clearance | 40 µm |
Engineering — Tolerances of run-out5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Range of section height at inner ring of assembled bearing | t Kia | 4 µm |
| Maximum run-out of inner ring side face to the bore | t Sd | 8 µm |
| Range of section height at outer ring of assembled bearing | t Kea | 8 µm |
| Perpendicularity of outer ring outside surface | t SD | 4 µm |
| ISO tolerance class for geometrical tolerances | P5 |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 0.21 kg | |
| eClass code | 23-05-09-11 | |
| UNSPSC code | 31171510 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 49.9 kN | |
| Basic static load rating | 44.0 kN | |
| Limiting speed | 780.0 r/min | |
| SKF performance class | SKF Explorer |
Properties12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Number of rows | 2 | |
| Locating feature, bearing outer ring | Without | |
| Bore type | Cylindrical | |
| Cage | Sheet metal | |
| Radial internal clearance | CN | |
| Tolerance class for dimensions | Normal | |
| Tolerance class for run-out | P5 | |
| Sealing | Seal on both sides | |
| Sealing type | Contact | |
| Lubricant | Food grade grease | |
| Relubrication feature | With | |
| Indicative carbon footprint for new product | 0.78 kg CO 2 e |