Description
| Bore type | Tapered 1:12 |
Dimensions
| d | 140 mm | Bore diameter |
|---|---|---|
| D | 250 mm | Outside diameter |
| B | 68 mm | Width |
| d2 | ≈ 173 mm | Shoulder diameter of inner ring |
| D1 | ≈ 223 mm | Shoulder or recess diameter of outer ring |
| s1 | max. 13.7 mm | Permissible axial displacement |
| r1,2 | min. 3 mm | Chamfer dimension |
Abutment dimensions
| Da | min. 207 mm | Diameter of housing abutment |
|---|---|---|
| Da | max. 236 mm | Abutment diameter housing |
| Ca | min. 2.3 mm | Minimum width of space required in housing |
| ra | max. 2.5 mm | Radius of fillet |
| A negative value for Ca is theoretical. | ||
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 830 kN |
| Basic static load rating | C0 | 1 060 kN |
| Fatigue load limit | Pu | 102 kN |
| Reference speed | 2 400 r/min | |
| Limiting speed | 3 200 r/min | |
| Misalignment factor | k1 | 0.109 |
| Internal clearance factor | k2 | 0.108 |
Tolerances and clearances
General bearing specifications
- Tolerances: Normal, 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
CARB toroidal roller bearings are unique: as well as accommodating misalignment without increased stress levels, they also provide frictionless axial movement within the bearing in the non-locating position in self-aligning bearing arrangements. Being NR Explorer bearings, they can accommodate higher load levels and provide significantly extended service life.
- Accommodate misalignment and axial displacement within the bearing
- High radial load carrying capacity
- Provide frictionless axial movement
- Long bearing system life
- Reduce noise and vibration levels
