INA ZARN2557-TV bearings
ZARN2557-TV, Needle roller/axial cylindrical roller bearings ZARN, double direction
- Bore diameter
- 25.000 mm
- Outside diameter
- 57.000 mm
- Total width
- 50.000 mm
- Cr
- 22600 N
- C0r
- 36000 N
- Ca
- 35500 N
- C0a
- 86000 N
- Limiting speed
- 6000 r/min
- Net weight
- 0.565 kg
- Measurement system
- Metric
- Sealing
- Without
- Cage
- Plastic
- Bearing material
- Steel
- Rolling material
- Steel
- Lubricant in bearing
- Without
- Relubrication feature
- With
In stock
Technical specification for INA ZARN2557-TV
| Part Number | ZARN2557-TV | |
|---|---|---|
| Main Dimensions & Performance Data | ||
| d | 25 mm | Bore diameter |
| D | 57 mm | Outside diameter |
| H | 50 mm | Hight |
| Ca | 35500 N | Basic dynamic load rating, axial |
| C0a | 86000 N | Basic static load rating, axial |
| Cr | 22600 N | Basic dynamic load rating, radial |
| C0r | 36000 N | Basic static load rating, radial |
| Cua | 7300 N | Fatigue load limit, axial |
| Cur | 5200 N | Fatigue load limit, radial |
| nG Oil | 6000 1/min | Limiting speed for oil lubrication |
| nG Grease | 1900 1/min | Limiting speed for grease lubrication |
| MRL | 0.55 Nm | Bearing friction torque |
| m | ≈ 0.565 kg | Weight |
| Mounting dimensions | ||
| Da max | 48 mm | Maximum diameter of housing shoulder |
| da min | 39 mm | Minimum diameter shaft shoulder |
| Dimensions | ||
| H1 | 35 mm | Height outer ring over wave washer |
| C | 20 mm | Width, outer ring |
| D1 | 47 mm | Rip diameter shaft washer |
| B | 10 mm | Width, inner ring |
| rmin | 0.3 mm | Minimum chamfer dimension |
| r1 min | 0.6 mm | Minimum chamfer dimension |
| Additional information | ||
| CaL | 1900 N/µm | Rigidity axial |
| CkL | 350 Nm/mrad | Tilting stiffness |
| Mm | 0.989 kg*cm2 | Mass moment of inertia |
| 1µm | Axial runout | |
| radial | ZMA25/45 | Recommended INA precision locknut for radial locking (not included) |
| axial | AM25 | Recommended INA precision locknut for axial locking (not included) |
| MA | 25 Nm | Tightening torque nut |
| 9745 N | Preload force axial | |
INA ZARN2557-TV - Needle roller/axial cylindrical roller bearings ZARN, double direction.
ZARN2557-TV INA axial/radial roller bearings for screw drives are double direction, high precision axial cylindrical roller bearings with a radial bearing component. The inner ring, outer ring and cylindrical roller and cage assemblies are matched to each other such that the bearing is axially clearance-free after preloading by means of an INA precision locknut.
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