NSK spherical roller bearing · live catalog page 1
21306CDKE4
Manufacturer-published boundary dimensions, basic load ratings, thermal speed rating, and limiting speeds.
Live manufacturer catalog row
Published specifications
- Designation
- 21306CDKE4
- Bore d
- 30 mm
- Outside diameter D
- 72 mm
- Width B
- 19 mm
- Minimum corner radius r
- 1.1 mm
- Basic dynamic load rating Cr
- 55,000 N
- Basic static load rating C0r
- 54,000 N
- Thermal speed rating — oil bath
- 7,500 rpm
- Mechanical speed — forced oil
- Not published
- Limiting speed — grease
- 4,500 rpm
- Limiting speed — oil
- 6,000 rpm
- Published row text
- 21306CDKE4 | 30 | 72 | 19 | 1.1 | 55000 | 54000 | 7500 | | 4500 | 6000
Verification boundary
What still needs to match
Internal designConfirm cage, internal design suffix, bore type, clearance, and seals.
Fits and geometryVerify shaft/housing fits, shoulders, fillets, locating method, and mounting arrangement.
DutyCheck radial/axial load, misalignment, lubrication, speed, temperature, contamination, and required life.
Current dataConfirm the exact designation on the linked NSK product page before ordering.
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