Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Super-precision angular contact ball bearings | |
| Bore diameter | d | 180 mm |
| Outside diameter | D | 250 mm |
| Width | B | 33 mm |
| Basic dynamic load rating | C | 168 kN |
| Basic static load rating | C0 | 212 kN |
| Fatigue load limit | Pu | 6.1 kN |
| Mass | ≈m | 4.13 kg |
| Sealing | Without | |
| Bearing material | Bearing steel | |
| Lubricant | None |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 180.0 mm | |
| Outside diameter | 250.0 mm | |
| Width | 33.0 mm | |
| Contact angle | 15.0 ° |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Super-precision angular contact ball bearings | |
| Official taxonomy path | /products/super-precision-bearings/angular-contact-ball-bearings | |
| Structure group ID | BA1_010 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Abutment dimensions7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 189 mm |
| Diameter of shaft abutment | d b | min. 189 mm |
| Diameter of housing abutment | D a | max. 241 mm |
| Diameter of housing abutment | D b | max. 245 mm |
| Radius of fillet | r a | max. 2 mm |
| Radius of fillet | r b | max. 1 mm |
| Position of oil nozzle | d n | 207.4 mm |
Engineering — Calculation data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 168 kN |
| Basic static load rating | C 0 | 212 kN |
| Fatigue load limit | P u | 6.1 kN |
| Attainable speed for grease lubrication | 5300 r/min | |
| Attainable speed for oil-air lubrication | 8000 r/min | |
| Contact angle | α | 15 ° |
| Ball diameter | D w | 22.225 mm |
| Number of rows | i | 1 |
| Number of balls (per bearing) | z | 27 |
| Reference grease quantity (per bearing) | G ref | 54 cm³ |
Engineering — Calculation data — Correction factors for preload calculation7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Correction factor dependent on bearing series and size | f | 1.3 |
| Correction factor dependent on contact angle | f 1 | 1 |
| Correction factor, preload class A | f 2A | 1 |
| Correction factor, preload class B | f 2B | 1 |
| Correction factor, preload class C | f 2C | 1.1 |
| Correction factor, preload class D | f 2D | 1.2 |
| Correction factor for hybrid bearings | f HC | 1 |
Engineering — Calculation data — Factors for equivalent bearing load calculation2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Calculation factor for equivalent loads | f 0 | 16.3 |
| Additional factors for equivalent loads | Refer to Notes 1 and 2 below |
Engineering — Calculation data — Preload and stiffness (back-to-back, face-to-face)8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Preload, class A | G A | 630 N |
| Axial stiffnes for preload A (sets of two brgs back to back or face to face) | 183 N/µm | |
| Preload, class B | G B | 1260 N |
| Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face) | 250 N/µm | |
| Preload, class C | G C | 2520 N |
| Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face) | 353 N/µm | |
| Preload, class D | G D | 5040 N |
| Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face) | 516 N/µm |
Engineering — Dimensions9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 180 mm |
| Outside diameter | D | 250 mm |
| Width | B | 33 mm |
| Shoulder diameter of inner ring (large side face) | d 1 | 201.6 mm |
| Shoulder diameter of inner ring (small side face) | d 2 | 201.6 mm |
| Shoulder diameter of outer ring (large side face) | D 1 | 228.4 mm |
| Chamfer dimension | r 1,2 | min. 2 mm |
| Chamfer dimension | r 3,4 | min. 1 mm |
| Distance from side face to pressure point | a | 45.4 mm |
Engineering — Engineering specifications1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Universal matching bearing(s) | No |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 4.13 kg | |
| eClass code | 23-05-08-04 | |
| UNSPSC code | 31171531 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 168.0 kN | |
| Basic static load rating | 212.0 kN | |
| Attainable speed for grease lubrication | 5300.0 r/min | |
| Attainable speed for oil-air lubrication | 8000.0 r/min |
Properties13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Contact type | Normal contact (two-point contact) | |
| Number of rows | 1 | |
| Ring type | One-piece inner and outer rings | |
| Design | High-capacity D | |
| Universal matching bearing | No | |
| Matched arrangement | No | |
| Matched condition (axial clearance/ preload) | Not applicable | |
| Tolerance class | P4A | |
| Material, bearing | Bearing steel | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Indicative carbon footprint for new product | 15.3 kg CO 2 e |