Description
| Bore type | Tapered 1:12 |
Dimensions
| d | 1 000 mm | Bore diameter |
|---|---|---|
| tΔdmp | 0.0 – 0.09 mm | Deviation limits of mid-range bore diameter |
| tΔSL | 0.0 – 0.09 mm | Deviation limits of tapered slope |
| D | 1 220 mm | Outside diameter |
| tΔDmp | -0.125 – 0.0 mm | Deviation limits of mid-range outside diameter |
| B | 165 mm | Width |
| tΔBs | -1.0 – 0.0 mm | Deviation limits of ring width |
| d2 | ≈ 1 079 mm | Shoulder diameter of inner ring |
| D1 | ≈ 1 161 mm | Shoulder/recess diameter of outer ring |
| K | 12 mm | Diameter of lubrication hole |
| r1,2 | min. 6 mm | Chamfer dimension |
| Normal | ISO tolerance class for dimensions |
Abutment dimensions
| Da | max. 1 197 mm | Diameter of housing abutment |
|---|---|---|
| ra | max. 5 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 5 405 kN |
| Basic static load rating | C0 | 14 300 kN |
| Fatigue load limit | Pu | 850 kN |
| Reference speed | 220 r/min | |
| Limiting speed | 400 r/min | |
| Limiting value | e | 0.12 |
| Calculation factor | Y1 | 5.6 |
| Calculation factor | Y2 | 8.4 |
| Calculation factor | Y0 | 5.6 |
Tolerances of run-out
| Range of section height at inner ring of assembled bearing | tKia | 90 µm |
|---|---|---|
| Range of section height at outer ring of assembled bearing | tKea | 160 µm |
| ISO tolerance class for geoal tolerances | Normal |
Radial internal clearance
| Minimum initial clearance | 710 µm |
| Maximum initial clearance | 930 µm |
Tolerances and clearances
General bearing specifications
- Tolerances: Normal, P6, P5,
tapered bore 1:12, tapered bore 1:30 - Radial internal clearance: cylindrical bore, tapered bore
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. They can be used in a modular system, including housings, sleeves and nuts.
- Accommodate misalignment
- High load carrying capacity
- Low friction and long service life
- Extensive range available sealed for increased reliability
- Increased wear resistance
