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 | 320 mm |
| Outside diameter | D | 440 mm |
| Width | B | 56 mm |
| Basic dynamic load rating | C | 276 kN |
| Basic static load rating | C0 | 400 kN |
| Fatigue load limit | Pu | 8.65 kN |
| Reference speed | nref | 2800 r/min |
| Limiting speed | nG | 2400 r/min |
| Mass | ≈m | 25.3 kg |
| Precision class | Normal | |
| Internal clearance | CN | |
| Sealing | Without | |
| Cage | Machined brass | |
| Bearing material | Bearing steel | |
| Lubricant | None |
Precision classification2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial ball bearing tolerance equivalent | ABEC 1Derived from ISO Normal; 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 | 320.0 mm | |
| Outside diameter | 440.0 mm | |
| Width | 56.0 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 | Yes |
Engineering — Abutment dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 333 mm |
| Diameter of housing abutment | D a | max. 427 mm |
| Radius of shaft or housing fillet | r a | max. 2.5 mm |
Engineering — Calculation data7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | C | 276 kN |
| Basic static load rating | C 0 | 400 kN |
| Fatigue load limit | P u | 8.65 kN |
| Reference speed | 2800 r/min | |
| Limiting speed | 2400 r/min | |
| Minimum load factor | k r | 0.02 |
| Calculation factor | f 0 | 16.5 |
Engineering — Dimensions10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 320 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.04 to 0 mm |
| Outside diameter | D | 440 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.045 to 0 mm |
| Width | B | 56 mm |
| Deviation limits of ring width | t ΔBs | -0.4 to 0 mm |
| Shoulder diameter | d 1 | ≈ 358.1 mm |
| Shoulder diameter | D 1 | ≈ 402.83 mm |
| Chamfer dimension | r 1,2 | min. 3 mm |
| ISO tolerance class for dimensions | Normal |
Engineering — Tolerances of run-out3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Range of section height at inner ring of assembled bearing | t Kia | 60 µm |
| Range of section height at outer ring of assembled bearing | t Kea | 80 µm |
| ISO tolerance class for geometrical tolerances | Normal |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 25.3 kg | |
| eClass code | 23-05-08-01 | |
| UNSPSC code | 31171504 |
Performance4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 276.0 kN | |
| Basic static load rating | 400.0 kN | |
| Reference speed | 2800.0 r/min | |
| Limiting speed | 2400.0 r/min |
Properties15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Filling slots | Without | |
| Number of rows | 1 | |
| Locating feature, bearing outer ring | Without | |
| Bore type | Cylindrical | |
| Cage | Machined brass | |
| Matched arrangement | No | |
| Radial internal clearance | CN | |
| Material, bearing | Bearing steel | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication feature | Without | |
| Candidate for remanufacturing | Yes | |
| Indicative carbon footprint for new product | 93.6 kg CO 2 e | |
| Indicative carbon footprint for remanufactured product | 31.1 kg CO 2 e |
