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 | 120 mm |
| Outside diameter | D | 180 mm |
| Width | B | 28 mm |
| Basic dynamic load rating | C | 111 kN |
| Basic static load rating | C0 | 116 kN |
| Fatigue load limit | Pu | 4 kN |
| Mass | ≈m | 2.09 kg |
| Sealing | Without | |
| Bearing material | Bearing steel | |
| Lubricant | None |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 120.0 mm | |
| Outside diameter | 180.0 mm | |
| Width | 28.0 mm | |
| Contact angle | 25.0 ° |
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 dimensions6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 129 mm |
| Diameter of shaft abutment | d b | min. 129 mm |
| Diameter of housing abutment | D a | max. 171 mm |
| Diameter of housing abutment | D b | max. 175 mm |
| Radius of fillet | r a | max. 2 mm |
| Radius of fillet | r b | max. 1 mm |
Engineering — Calculation data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 111 kN |
| Basic static load rating | C 0 | 116 kN |
| Fatigue load limit | P u | 4 kN |
| Attainable speed for grease lubrication | 6700 r/min | |
| Attainable speed for oil-air lubrication | 10000 r/min | |
| Contact angle | α | 25 ° |
| Ball diameter | D w | 19.05 mm |
| Number of rows | i | 1 |
| Number of balls (per bearing) | z | 22 |
| Reference grease quantity (per bearing) | G ref | 27 cm³ |
Engineering — Calculation data — Correction factors for preload calculation7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Correction factor dependent on bearing series and size | f | 1.2 |
| Correction factor dependent on contact angle | f 1 | 0.99 |
| 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 | 1.1 |
| Correction factor for hybrid bearings | f HC | 1 |
Engineering — Calculation data — Factors for equivalent bearing load calculation8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Limiting value | e | 0.68 |
| Axial load factor (single, tandem) | Y 2 | 0.87 |
| Axial load factor (single, tandem) | Y 0 | 0.38 |
| Radial load factor (single, tandem) | X 2 | 0.41 |
| Axial load factor (back-to-back, face-to-face) | Y 1 | 0.92 |
| Axial load factor (back-to-back, face-to-face) | Y 2 | 1.4 |
| Axial load factor (back-to-back, face-to-face) | Y 0 | 0.76 |
| Radial load factor (back-to-back, face-to-face) | X 2 | 0.67 |
Engineering — Calculation data — Preload and stiffness (back-to-back, face-to-face)8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Preload, class A | G A | 690 N |
| Axial stiffnes for preload A (sets of two brgs back to back or face to face) | 318 N/µm | |
| Preload, class B | G B | 1380 N |
| Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face) | 416 N/µm | |
| Preload, class C | G C | 2760 N |
| Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face) | 552 N/µm | |
| Preload, class D | G D | 5520 N |
| Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face) | 749 N/µm |
Engineering — Dimensions13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 120 mm |
| Outside diameter | D | 180 mm |
| Width | B | 28 mm |
| Shoulder diameter of inner ring (large side face) | d 1 | 138.5 mm |
| Shoulder diameter of inner ring (small side face) | d 2 | 138.5 mm |
| Shoulder diameter of outer ring (large side face) | D 1 | 161.5 mm |
| Width of lubrication groove | b | 2.8 mm |
| Distance from outer ring side face to lubrication groove / lubrication hole | C 1 | 15 mm |
| Distance from outer ring side face to O-ring groove | C 2 | 6.2 mm |
| Distance from outer ring side face to O-ring groove | C 3 | 5.4 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 | 49.1 mm |
Engineering — Engineering specifications1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Universal matching bearing(s) | No |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 2.09 kg | |
| eClass code | 23-05-08-04 | |
| UNSPSC code | 31171531 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 111.0 kN | |
| Basic static load rating | 116.0 kN | |
| Attainable speed for grease lubrication | 6700.0 r/min | |
| Attainable speed for oil-air lubrication | 10000.0 r/min |
Properties14 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 | |
| Special feature | Suitable for direct oil-air lubrication | |
| Indicative carbon footprint for new product | 7.7 kg CO 2 e |
