Description
| Bore type | Tapered 1:12 |
Dimensions
| d | 40 mm | Bore diameter |
|---|---|---|
| tΔdmp | 0.0 – 0.025 mm | Deviation limits of mid-range bore diameter |
| tΔSL | 0.0 – 0.025 mm | Deviation limits of tapered slope |
| D | 90 mm | Outside diameter |
| tΔDmp | -0.015 – 0.0 mm | Deviation limits of mid-range outside diameter |
| B | 33 mm | Width |
| tΔBs | -0.06 – 0.0 mm | Deviation limits of ring width |
| d2 | ≈ 49.9 mm | Shoulder diameter of inner ring |
| D1 | ≈ 74.3 mm | Shoulder/recess diameter of outer ring |
| b | 6 mm | Width of lubrication groove |
| K | 3 mm | Diameter of lubrication hole |
| r1,2 | min. 1.5 mm | Chamfer dimension |
| Normal | ISO tolerance class for dimensions |
Abutment dimensions
| Da | max. 81 mm | Diameter of housing abutment |
|---|---|---|
| ra | max. 1.5 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 155 kN |
| Basic static load rating | C0 | 140 kN |
| Fatigue load limit | Pu | 15 kN |
| Reference speed | 6 000 r/min | |
| Limiting speed | 8 000 r/min | |
| Limiting value | e | 0.37 |
| Calculation factor | Y1 | 1.8 |
| Calculation factor | Y2 | 2.7 |
| Calculation factor | Y0 | 1.8 |
Tolerances of run-out
| Range of section height at inner ring of assembled bearing | tKia | 5 µm |
|---|---|---|
| Maximum run-out of inner ring side face to the bore | tSd | 8 µm |
| Range of section height at outer ring of assembled bearing | tKea | 10 µm |
| Perpendicularity of outer ring outside surface | tSD | 4.5 µm |
| ISO tolerance class for geoal tolerances | P5 |
Radial internal clearance
| Minimum initial clearance | 35 µm |
| Maximum initial clearance | 50 µm |
Mounting information
| Recommended tightening angle for lock nut | α | 115 ° |
|---|
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. The design includes features to facilitate relubrication. The bearings can be used in a modular system, including housings, sleeves and nuts.
- Accommodate misalignment
- High load carrying capacity
- Relubrication features
- Low friction and long service life
- Increased wear resistance
