UKFL212-J7
Holding a bearing marked NSK UKFL212 or NTN UKFL212D1 + H2312X or KOYO UKFL212J + H2312X? Ours is UKFL212-J7 — the same seat size, the same type and the same sealing and clearance design.
What this bearing is
UKFL212-J7 is a flanged housing unit with a 55 × 110 × 40 mm seat, execution: open. The manufacturer's cross-reference catalogue confirms full interchangeability for 5 designations, including NSK UKFL212, NSK UKFL212D1 + H2312X, NTN UKFL212D1 + H2312X.
Designation equivalents
⌀55 × 110 × 40 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.
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.