319452 B-2LS
Double row full complement cylindrical roller bearing, NNF design, with integral sealing and relubrication featureDouble row full complement cylindrical roller bearings incorporate a maximum number of rollers and are therefore suitable for very heavy radial loads in combination with moderate speeds. Having three flanges on the two-piece inner ring and one central flange on the outer ring, NNF design bearings can locate the shaft axially in both directions. Two snap ring grooves in the outer ring simplify mounting and save space axially.
- Very high radial load carrying capacity
- High radial stiffness
- Long service life
- Locate the shaft axially in both directions
- Sealed for increased reliability, with relubrication feature
Description
Dimensions
| d | 260 mm | Bore diameter |
|---|---|---|
| D | 340 mm | Outside diameter |
| B | 95 mm | Width |
| C | 94 mm | Outer ring width (sealed bearing) |
| d1 | ≈ 291.2 mm | Shoulder diameter inner ring |
| D3 | 334 mm | Snap ring groove diameter at outer ring |
| C1 | 83.2 mm | Distance between two snap ring grooves of the outer ring outside surface |
+ 0.2 mm | Tolerance for distance C1 | |
| C2 | 5.4 mm | Distance outer ring side face – snap ring groove (sealed bearing) |
| b | 6.3 mm | Width snap ring groove outer ring |
| b1 | 8 mm | Width annular lubrication groove outer ring |
| K | 6 mm | Diameter lubrication hole (outer ring) |
| r | min. 1.8 mm | Chamfer dimension (sealed bearing) |
| r3,4 | min. 1 mm | Chamfer dimension |
Abutment dimensions
| da | min. 267 mm | Abutment diameter shaft |
|---|---|---|
| das | 286 mm | Abutment diameter shaft |
| Ca1 | 75 mm | Abutment width applying for SW snap rings (sealed brg.) |
– 0.2 mm | Tolerance for abutment Ca (SW snap rings) | |
| Ca2 | 71 mm | Abutment width applying for DIN 471 snap rings (sealed brg.) |
– 0.2 mm | Tolerance for abutment Ca (DIN 471 snap rings) | |
| ra | max. 1.5 mm | Fillet radius |
Calculation data
| Basic dynamic load rating | C | 990 kN |
|---|---|---|
| Basic static load rating | C0 | 2 160 kN |
| Fatigue load limit | Pu | 212 kN |
| Limiting speed | 340 r/min | |
| Minimum load factor | kr | 0.4 |
Mass
| Mass bearing | 22 kg |
Associated products
| Snap ring Seeger | SW 340 |
| Snap ring in accordance with DIN 471 | 340×6 |
Tolerances and clearances
Bearing interfaces
