NSK 21304CDKE4 bearings
21304CDKE4, NSK, Spherical roller bearing with tapered bore
- Measurement system
- Metric
- Bore diameter
- 20.000 mm
- Outside diameter
- 52.000 mm
- Width
- 15.000 mm
- Cr
- 29300 N
- C0r
- 26900 N
- Limiting speed
- 8200 r/min
- Net weight
- 0.17 kg
- Number of rows
- 2
- Sealing
- Without
- Locating feature
- Without
- Cage
- Steel sheet metal
- Bore type
- Tapered
- Bearing material
- Steel
- Rolling material
- Steel
- Tolerance class
- Normal (PN)
- Internal clearance
- CN
- Lubricant in bearing
- None
- Relubrication feature
- With
In stock
Technical specification for NSK 21304CDKE4
| NSK Designation | 21304CDKE4 | |
|---|---|---|
| Boundary Dimensions | ||
| d | 20 mm | Bore diameter |
| D | 52 mm | Outside diameter |
| B | 15 mm | Width |
| r (min.) | 1.1 mm | Chamfer dimension |
| Basic Load Ratings | ||
| Cr | 29300 N | Basic dynamic load rating |
| C0r | 26900 N | Basic static load rating |
| Speeds | ||
| Thermal Speed Rating (Oil-bath) | 10000 r/min | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Grease | 6300 r/min | Grease lubrication |
| Oil (Oil-bath) | 8200 r/min | Oil-bath lubrication |
| Abutment and Fillet Dimensions | ||
| da min. | 27 mm | Diameter of shaft abutment |
| da max. | 28 mm | Diameter of shaft abutment |
| Da min. | 42 mm | Diameter of housing abutment |
| Da max. | 45 mm | Diameter of housing abutment |
| ra max. | 1 mm | Radius of shaft or housing fillet |
| Calculation factors | ||
| e | 0.31 | Constant |
| Y2 | 3.2 | Axial load Factors |
| Y3 | 2.1 | Axial load Factors |
| Y0 | 2.1 | Axial load Factors |
| Mass | ||
| Mass (approx.) | 0.17 kg | |
NSK 21304CDKE4 spherical roller bearing is designed for high load capacity. 21304CDKE4 bearing have machined brass cage, and the inner ring is tapered bore 1:12. An oil groove and holes are privided in the outer ring so supply lubricant. Boundary dimensions: 20 x 52 x 15 mm.
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