Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications16 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Deep groove ball bearings | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 52 mm |
| Width | B | 15 mm |
| Basic dynamic load rating | C | 16.8 kN |
| Basic static load rating | C0 | 7.8 kN |
| Fatigue load limit | Pu | 0.335 kN |
| Reference speed | nref | 30000 r/min |
| Limiting speed | nG | 15000 r/min |
| Mass | ≈m | 0.149 kg |
| Precision class | P6 and tighter width tolerance | |
| Internal clearance | CN | |
| Sealing | Shield on both sides | |
| Cage | Sheet metal | |
| Bearing material | Bearing steel | |
| Lubricant | Grease |
Precision classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial ball bearing tolerance equivalent | ABEC 3Derived from ISO P6; not a direct ABEC marking | |
| Mapping basis | ISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value. |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 20.0 mm | |
| Outside diameter | 52.0 mm | |
| Width | 15.0 mm |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Deep groove ball bearings | |
| Official taxonomy path | /products/rolling-bearings/ball-bearings/deep-groove-ball-bearings | |
| Structure group ID | BB1_001_101 | |
| Available from SKF | Yes | |
| Remanufacturable | No |
Engineering — Abutment dimensions7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 27 mm |
| Diameter of shaft abutment | d a | max. 30.3 mm |
| Diameter of housing abutment | D a | max. 45 mm |
| Diameter of snap ring recess in the housing | D b | min. 59 mm |
| Width of snap ring recess in the housing | b a | min. 1.5 mm |
| Distance from outer ring side face to snap ring back face | C a | max. 3.58 mm |
| Radius of shaft or housing fillet | r a | max. 1 mm |
Engineering — Calculation data8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| SKF performance class | SKF Explorer | |
| Basic dynamic load rating | C | 16.8 kN |
| Basic static load rating | C 0 | 7.8 kN |
| Fatigue load limit | P u | 0.335 kN |
| Reference speed | 30000 r/min | |
| Limiting speed | 15000 r/min | |
| Minimum load factor | k r | 0.03 |
| Calculation factor | f 0 | 12 |
Engineering — Dimensions16 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 20 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.008 to 0 mm |
| Outside diameter | D | 52 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.011 to 0 mm |
| Width | B | 15 mm |
| Deviation limits of ring width | t ΔBs | -0.06 to 0 mm |
| Shoulder diameter | d 1 | ≈ 30.35 mm |
| Recess diameter | D 2 | ≈ 44.71 mm |
| Diameter of snap ring groove | D 3 | 49.73 mm |
| Outside diameter of snap ring | D 4 | 57.9 mm |
| Width of snap ring groove | b | 1.35 mm |
| Distance from outer ring side face to snap ring groove | C | 2.46 mm |
| Width of snap ring | f | 1.12 mm |
| Bottom radius of snap ring groove | r 0 | max. 0.4 mm |
| Chamfer dimension | r 1,2 | min. 1.1 mm |
| ISO tolerance class for dimensions | P6 and tighter width tolerance |
Engineering — Included products1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Snap ring | SP 52 |
Engineering — Tolerances of run-out7 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 |
| Maximum axial run-out of inner ring of assembled bearing | t Sia | 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 |
| Maximum axial run-out of outer ring of assembled bearing | t Sea | 10 µm |
| ISO tolerance class for geometrical tolerances | P5 |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 0.149 kg | |
| eClass code | 23-05-08-01 | |
| UNSPSC code | 31171504 |
Performance5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 16.8 kN | |
| Basic static load rating | 7.8 kN | |
| Reference speed | 30000.0 r/min | |
| Limiting speed | 15000.0 r/min | |
| SKF performance class | SKF Explorer |
Properties14 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Filling slots | Without | |
| Number of rows | 1 | |
| Locating feature, bearing outer ring | Snap ring (fitted) | |
| Bore type | Cylindrical | |
| Cage | Sheet metal | |
| Matched arrangement | No | |
| Radial internal clearance | CN | |
| Material, bearing | Bearing steel | |
| Coating | Without | |
| Sealing | Shield on both sides | |
| Sealing type | Non-contact | |
| Lubricant | Grease | |
| Relubrication feature | Without | |
| Indicative carbon footprint for new product | 0.55 kg CO 2 e |
