21304CDKE4

Manufacturer-published boundary dimensions, basic load ratings, thermal speed rating, and limiting speeds.

Bore d20 mmOutside diameter D52 mmWidth B15 mmDynamic rating Cr29,300 NNSK product page ↗

Live manufacturer catalog row

Published specifications

NSK Online Catalog

Designation: 21304CDKE4
Bore d: 20 mm
Outside diameter D: 52 mm
Width B: 15 mm
Minimum corner radius r: 1.1 mm
Basic dynamic load rating Cr: 29,300 N
Basic static load rating C0r: 26,900 N
Thermal speed rating — oil bath: 10,000 rpm
Mechanical speed — forced oil: Not published
Limiting speed — grease: 6,300 rpm
Limiting speed — oil: 8,200 rpm
Published row text: 21304CDKE4 | 20 | 52 | 15 | 1.1 | 29300 | 26900 | 10000 | | 6300 | 8200

Verification boundary

Do not infer interchange

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.

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