Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Variant / construction | Spherical roller bearings | |
| Bore diameter | d | 400 mm |
| Outside diameter | D | 720 mm |
| Width | B | 256 mm |
| Basic dynamic load rating | C | 6881 kN |
| Basic static load rating | C0 | 10400 kN |
| Fatigue load limit | Pu | 680 kN |
| Reference speed | nref | 480 r/min |
| Limiting speed | nG | 670 r/min |
| Mass | ≈m | 450 kg |
| Precision class | Normal | |
| Internal clearance | CN | |
| Sealing | Without | |
| Cage | Machined brass | |
| Lubricant | None |
Dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | 400.0 mm | |
| Outside diameter | 720.0 mm | |
| Width | 256.0 mm |
Product identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Official product category | Spherical roller bearings | |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/spherical-roller-bearings | |
| Structure group ID | BS2_001 | |
| Available from SKF | Yes | |
| Remanufacturable | Yes |
Engineering — Abutment dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 426 mm |
| Diameter of housing abutment | D a | max. 694 mm |
| Radius of fillet | r a | max. 5 mm |
Engineering — Calculation data10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| SKF performance class | SKF Explorer | |
| Basic dynamic load rating | C | 6881 kN |
| Basic static load rating | C 0 | 10400 kN |
| Fatigue load limit | P u | 680 kN |
| Reference speed | 480 r/min | |
| Limiting speed | 670 r/min | |
| Limiting value | e | 0.35 |
| Calculation factor | Y 1 | 1.9 |
| Calculation factor | Y 2 | 2.9 |
| Calculation factor | Y 0 | 1.8 |
Engineering — Dimensions12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 400 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.04 to 0 mm |
| Outside diameter | D | 720 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.075 to 0 mm |
| Width | B | 256 mm |
| Deviation limits of ring width | t ΔBs | -0.4 to 0 mm |
| Shoulder diameter of inner ring | d 2 | ≈ 500 mm |
| Shoulder/recess diameter of outer ring | D 1 | ≈ 615 mm |
| Width of lubrication groove | b | 22.3 mm |
| Diameter of lubrication hole | K | 12 mm |
| Chamfer dimension | r 1,2 | min. 6 mm |
| ISO tolerance class for dimensions | Normal |
Engineering — Engineering specifications1 parameter
| Parameter | Symbol | Value |
|---|---|---|
| Bore type | Cylindrical |
Engineering — Radial internal clearance2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum initial clearance | 220 µm | |
| Maximum initial clearance | 340 µm |
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 | 120 µm |
| ISO tolerance class for geometrical tolerances | Normal |
Logistics3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Product net weight | 450.0 kg | |
| eClass code | 23-05-09-11 | |
| UNSPSC code | 31171510 |
Performance5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Basic dynamic load rating | 6881.0 kN | |
| Basic static load rating | 10400.0 kN | |
| Reference speed | 480.0 r/min | |
| Limiting speed | 670.0 r/min | |
| SKF performance class | SKF Explorer |
Properties13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Number of rows | 2 | |
| Locating feature, bearing outer ring | Without | |
| Bore type | Cylindrical | |
| Cage | Machined brass | |
| Radial internal clearance | CN | |
| Tolerance class for dimensions | Normal | |
| Tolerance class for run-out | Normal | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication feature | With | |
| Candidate for remanufacturing | Yes | |
| Indicative carbon footprint for new product | 1665.0 kg CO 2 e | |
| Indicative carbon footprint for remanufactured product | 554.0 kg CO 2 e |