21306CDE4

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

Bore d30 mmOutside diameter D72 mmWidth B19 mmDynamic rating Cr55,000 NNSK product page ↗

Live manufacturer catalog row

Published specifications

NSK Online Catalog

Designation: 21306CDE4
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: 21306CDE4 | 30 | 72 | 19 | 1.1 | 55000 | 54000 | 7500 | | 4500 | 6000

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.

Current dataConfirm the exact designation on the linked NSK product page before ordering.

Related NSK bearings