INA NK21/20-XL bearings
Needle roller bearings NK, light series
- Measurement system
- Metric
- Bore diameter
- 21.000 mm
- Outside diameter
- 29.000 mm
- Width
- 20.000 mm
- Cr
- 19300 N
- C0r
- 25500 N
- Limiting speed
- 20600 r/min
- Net weight
- 35.7 g
- Number of rows
- 1
- Sealing
- Without
- Cage
- Sheet steel
- Outer diameter type
- Cylindrical
- Bearing material
- Steel
- Rolling material
- Steel
- Tolerance class
- Normal (PN)
- Lubricant in bearing
- Without
- Relubrication feature
- With
In stock
Technical specification for INA NK21/20-XL
| Part Number | NK21/20-XL | |
|---|---|---|
| Cage | Standard | |
| Tolerance class | PN | Normal (PN) |
| Main Dimensions & Performance Data | ||
| FW | 21 mm | Under roller diameter |
| D | 29 mm | Outside diameter |
| C | 20 mm | Width |
| Cr | 19300 N | Basic dynamic load rating, radial |
| C0r | 25500 N | Basic static load rating, radial |
| Cur | 4500 N | Fatigue load limit, radial |
| nG | 20600 1/min | Limiting speed |
| nϑr | 12300 1/min | Reference speed |
| m | ≈ 35.7 g | Weight |
| Dimensions | ||
| rmin | 0.3 mm | Minimum chamfer dimension |
| Additional information | ||
| G21X29X4 | Sealing ring | |
| Sealing ring | ||
INA NK21/20-XL, Needle roller bearings NK, light series, Main dimensions: 21 x 29 x 20mm.
INA NK21/20-XL bearings without inner ring have particularly compact radial dimensions. However, they require a shaft raceway that is hardened and ground.
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