Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Super-precision angular contact thrust ball bearings | |
| Bore diameter | d | 180 mm |
| Outside diameter | D | 280 mm |
| Height | H | 90 mm |
| Basic dynamic load rating | C | 140 kN |
| Basic static load rating | C0 | 365 kN |
| Fatigue load limit | Pu | 10400 kN |
| Mass | ≈m | 21.3 kg |
| Sealing | Without | |
| Cage | Machined metal | |
| Bearing material | Bearing steel | |
| Lubricant | None |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 180.0 mm | |
| Outside diameter | 280.0 mm | |
| Height | 90.0 mm | |
| Contact angle | 30.0 ° |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Super-precision angular contact thrust ball bearings | |
| Official taxonomy path | /products/super-precision-bearings/double-direction-acthbb | |
| Structure group ID | BEA_010 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Abutment dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Shaft abutment diameter | d a | min. 191 mm |
| Housing abutment diameter | D a | max. 274 mm |
| Fillet radius | r a | max. 2 mm |
| Fillet radius | r b | max. 1 mm |
| Oil nozzle position | d n | 219.9 mm |
Engineering — Calculation data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 140000 N |
| Basic static load rating | C 0 | 365000 N |
| Fatigue load limit | P u | 10400 N |
| Attainable speed for grease lubrication | 3400 r/min | |
| Attainable speed for oil-air lubrication | 4400 r/min | |
| Contact angle | α | 30 ° |
| Ball diameter | D w | 20.638 mm |
| Number of rows | i | 2 |
| Number of balls (per bearing) | z | 30 |
| Reference grease quantity, set | G ref | 160 cm³ |
Engineering — Calculation data — Preload and stiffness2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Preload | 1600 N | |
| Axial stiffness | 597 N/µm |
Engineering — Dimensions7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 180 mm |
| Outside diameter | D | 280 mm |
| Bearing height | H | 90 mm |
| Shaft washer shoulder diameter (high shoulder) | d 1 | 226.5 mm |
| Housing washer shoulder diameter (low shoulder) | D 1 | 254.7 mm |
| Shaft washer chamfer radius | r 1,2 | min. 2.1 mm |
| Housing washer small chamfer radius | r 3,4 | min. 1.1 mm |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 21.3 kg | |
| eClass code | 23-05-10-02 | |
| UNSPSC code | 31171531 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 140.0 kN | |
| Basic static load rating | 365.0 kN | |
| Attainable speed for grease lubrication | 3400.0 r/min | |
| Attainable speed for oil-air lubrication | 4400.0 r/min |
Properties13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Axial load capability | Double-direction | |
| Number of rows | 2 | |
| Locating feature, bearing outer ring | Without | |
| Design | High-speed (BTM series) | |
| Housing washer type (double-row angular contact thrust ball bearings) | Two-piece | |
| Cage | Machined metal | |
| Tolerance class | P4C | |
| Material, bearing | Bearing steel | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication feature | Without | |
| Indicative carbon footprint for new product | 78.9 kg CO 2 e |
