61906-C3
Holding a bearing marked SKF 61906/C3 or NSK 61906C3 or NTN 61906C3? Ours is 61906-C3 — the same seat size, the same type and the same sealing and clearance design.
What this bearing is
61906-C3 is a deep groove ball bearing with a 30 × 47 × 9 mm seat, execution: open · clearance C3. The designation suffixes indicate SKF 61906/C3, NSK 61906C3, NTN 61906C3 as its counterparts.
Designation equivalents
⌀30 × 47 × 9 mm
Before you replace it
This is a dimensional and design equivalent: the same seat size, the same bearing type and the same sealing and clearance design. It is not the same product — load ratings, tolerance class and grease may differ between manufacturers. For duty close to the limits or a critical application, check the datasheet of the specific design.
The same seat in another execution
These items share the mounting size and have cross-reference tables of their own. They differ in sealing, clearance or cage — exactly what decides how the bearing behaves in the seat.
Where these equivalents come from
The base number of a standard bearing is an ISO standard — 6205 is 6205 at every manufacturer. Only the suffixes describing the design differ, and those are what we translate: shields, contact seals, cage and radial clearance. Designations that mean different things at different makers are deliberately omitted.