Industrial replacement referenceSource-backed records · No compatibility guesswork

NSK single-row deep groove ball bearing · live catalog page 4

6906DDU

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

Bore d30 mmOutside diameter D47 mmWidth B9 mmDynamic rating Cr7,950 NNSK product page ↗

Live manufacturer catalog row

Published specifications

NSK online catalog
Designation
6906DDU
Bore d
30 mm
Outside diameter D
47 mm
Width B
9 mm
Minimum corner radius r
0.3 mm
Basic dynamic load rating Cr
7,950 N
Basic static load rating C0r
5,000 N
Limiting speed — grease
8,500 rpm
Limiting speed — oil
Not published for this row
Published row text
6906DDU | 30 | 47 | 9 | 0.3 | 7950 | 5000 | 8500 |

Verification boundary

What still needs to match

Do not infer interchange
Exact suffixConfirm seals/shields, internal clearance, cage, precision class, and material for the complete designation.
FitVerify shaft/housing tolerances, shoulders, fillets, and mounting method.
DutyCheck speed, temperature, lubrication, contamination, load direction, and required bearing life.
Current product dataConfirm the exact designation on the linked NSK product page before ordering.

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