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 thrust ball bearings | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 68 mm |
| Height | H | 28 mm |
| Basic dynamic load rating | C | 27.5 kN |
| Basic static load rating | C0 | 51 kN |
| Fatigue load limit | Pu | 1.9 kN |
| Mass | ≈m | 0.583 kg |
| Sealing | Seal on both sides | |
| Cage | Non-metallic | |
| Lubricant | Grease |
Dimensions4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 20.0 mm | |
| Outside diameter | 68.0 mm | |
| Height | 28.0 mm | |
| Contact angle | 60.0 ° |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Super-precision angular contact thrust ball bearings | |
| Official taxonomy path | /products/super-precision-bearings/angular-contact-thrust-ball-bearings-for-screw-drives | |
| Structure group ID | BEA_020_030 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Abutment dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Abutment diameter shaft | d a | min. 25 mm |
| Abutment diameter housing | D a | max. 43 mm |
| Fillet radius | r a | max. 0.3 mm |
Engineering — Calculation data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 27.5 kN |
| Basic static load rating | C 0 | 51 kN |
| Fatigue load limit | P u | 1.9 kN |
| Attainable speed | 3800 r/min | |
| Contact angle | α | 60 ° |
| Preload | 1650 N | |
| Frictional moment | 0.3 N·m | |
| Axial stiffness for preload A (sets of two brgs back-to-back or face-to-face) | 680 N/µm | |
| Static moment stiffness | 140 N·m/mrad |
Engineering — Dimensions11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 20 mm |
| Outside diameter | D | 68 mm |
| Height | H | 28 mm |
| Inner ring recess diameter | d 2 | 32.2 mm |
| Outer ring recess diameter | D 2 | 43.2 mm |
| Extraction groove position | H 1 | 19 mm |
| Chamfer radius | r 1,2 | min. 0.3 mm |
| Chamfer radius | r 3,4 | min. 0.6 mm |
| Distance pressure points | a | 73 mm |
| Pitch diameter of holes for bolts | J | 53 mm |
| Through hole for attachment bolts | N | 6.8 mm |
Engineering — Mounting information3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Required attachment bolt size (DIN 912) | M6 | |
| Number of attachment bolts | 7 | |
| Angle between holes in outer ring (Pitch) | α | 45 ° |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 0.583 kg | |
| eClass code | 23-05-08-03 | |
| UNSPSC code | 31171507 |
Performance3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 27.5 kN | |
| Basic static load rating | 51.0 kN | |
| Attainable speed for grease lubrication | 3800.0 r/min |
Properties11 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Axial load capability | Double-direction | |
| Number of rows | 2 | |
| Locating feature, bearing outer ring | Bolt holes | |
| Housing washer type (double-row angular contact thrust ball bearings) | One-piece | |
| Cage | Non-metallic | |
| Single bearing, universally matchable, delivered individually | No | |
| Sealing | Seal on both sides | |
| Sealing type | Contact | |
| Lubricant | Grease | |
| Relubrication feature | With | |
| Indicative carbon footprint for new product | 2.2 kg CO 2 e |
