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ZKLN2557-2Z-XL
Axial angular contact ball bearing
Axial angular contact ball bearings ZKLN..-2Z, double direction, gap seals on both sides
Replaces
ZKLN 2557.2Z, ZKLN2557-2Z
Main Dimensions & Performance Data
| d | 25 mm | Bore diameter |
0 mm | Bore diameter upper tolerance | |
-0.005 mm | Bore diameter lower tolerance | |
| D | 57 mm | Outside diameter |
0 mm | Outside diameter upper tolerance | |
-0.01 mm | Outside diameter lower tolerance | |
| B | 28 mm | Width |
0 mm | Width upper tolerance | |
-0.25 mm | Width lower tolerance | |
| Ca | 30,500 N | Basic dynamic load rating, axial |
| C0a | 55,000 N | Basic static load rating, axial |
| Cua | 3,350 N | Fatigue load limit, axial |
| nG Grease | 7,500 1/min | Limiting speed for grease lubrication |
| nϑ | 4,700 1/min | Thermally safe operating speed |
| MR | 0.2 Nm | Bearing frictional torque |
| ≈m | 0.355 kg | Weight |
Mounting dimensions
| Da max | 48 mm | Maximum diameter of housing |
| da min | 32 mm | Minimum diameter shaft |
Dimensions
| d1 | 40.5 mm | Rib diameter inner ring |
| rmin | 0.3 mm | Minimum chamfer dimension |
| r1 min | 0.6 mm | Minimum chamfer dimension |
| α | 60 ° | Contact angle |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
Additional information
| caL | 750 N/µm | Rigidity axial |
| ckL | 200 Nm/mrad | Tilting rigidity |
| Mm | 0.486 kg*cm2 | Mass moment of inertia |
2 µm | Axial runout | |
ZM25 | Recommended INA precision locknut for radial locking | |
AM25 | Recommended INA precision locknut for axial locking | |
| MA | 25 Nm | Tightening torque for the recommended INA precision locknut |
9,123 N | Required locknut force axial |