305-2ZNR
Deep groove ball bearing with filling slots and integral sealingSingle row deep groove ball bearings with filling slots, a snap ring, and shields on one or both sides, accommodate more balls than standard deep groove ball bearings. They are of a simple, yet versatile, design and are robust in operation, requiring little maintenance. They can accommodate radial and axial loads in both directions. They have a higher radial load carrying capacity than the corresponding bearings without filling slots but have a limited axial load carrying capacity due to the filling slots. The snap ring, fitted in an annular groove in the outer ring, facilitates axial location of the bearings within their housings. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.
- Snap ring facilitates axial location within housing
- Integral sealing prolongs bearing service life
- Simple, versatile and robust design
- Accommodate higher radial loads than corresponding bearings without filling slots, with limited axial loads in both directions
- Require little maintenance
Description
Dimensions
| d | 25 mm | Bore diameter |
|---|---|---|
| D | 62 mm | Outside diameter |
| B | 17 mm | Width |
| d1 | ≈ 36.6 mm | Shoulder diameter |
| D2 | ≈ 52.7 mm | Recess diameter |
| D3 | 59.61 mm | Diameter of snap ring groove |
| D4 | 67.7 mm | Outside diameter of snap ring |
| b | 1.9 mm | Width of snap ring groove |
| C | 3.28 mm | Distance outer ring from side face to snap ring groove |
| f | 1.7 mm | Width of snap ring |
| r0 | max. 0.6 mm | Bottom radius of snap ring groove |
| r1,2 | min. 1.1 mm | Chamfer dimension |
Abutment dimensions
| da | min. 32 mm | Diameter of shaft abutment |
|---|---|---|
| da | max. 32.7 mm | Diameter of shaft abutment |
| Da | max. 55 mm | Diameter of housing abutment |
| Db | min. 69 mm | Diameter of snap ring recess in the housing |
| ba | min. 2.2 mm | Width of snap ring recess in the housing |
| Ca | max. 4.98 mm | Distance from outer ring side face to snap ring back face |
| ra | max. 1 mm | Radius of shaft or housing fillet |
Calculation data
| Basic dynamic load rating | C | 22.9 kN |
|---|---|---|
| Basic static load rating | C0 | 15.6 kN |
| Fatigue load limit | Pu | 0.67 kN |
| Reference speed | 20 000 r/min | |
| Limiting speed | 10 400 r/min | |
| Minimum load factor | kr | 0.05 |
Mass
| Mass bearing | 0.24 kg |
Included products
| Snap ring | SP 62 |
Tolerance class
| Dimensional tolerances | Normal |
| Radial run-out | Normal |
Tolerances and clearances
Bearing data
Bearing interfaces
