ZKLN2557-2RS-2AP-XL
Axial angular contact ball bearing
Axial angular contact ball bearings ZKLN..-2RS-2AP-XL, matched pair, double direction, lip seals on both sides
Replaces
ZKLN 2557.2RS 2AP, ZKLN2557-2RS-2AP
Description
Metric
Imperial
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 | 56 mm | Width |
| 0 mm | Width upper tolerance | |
| -0.5 mm | Width lower tolerance | |
| Ca | 44,500 N | Basic dynamic load rating, axial |
| C0a | 111,000 N | Basic static load rating, axial |
| Cua | 6,700 N | Fatigue load limit, axial |
| nG Grease | 5,700 1/min | Limiting speed for grease lubrication |
| nϑ | 2,600 1/min | Thermally safe operating speed |
| MR | 0.6 Nm | Bearing frictional torque |
| ≈m | 0.711 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 | 1,300 N/µm | Rigidity axial |
| ckL | 450 Nm/mrad | Tilting rigidity |
| Mm | 0.972 kg*cm2 | Mass moment of inertia |
| 2 µm | Axial runout | |
| ZMA25/45 | 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 |
Your current product variant
| Sealing | 2RS | Contact lip seals on both sides |
| Tolerance class | Standard | Standard |
| Number of bearings | 2AP | Axial angular contact ball bearings, matched pair |
Characteristics
