624-Z
Holding a bearing marked SKF 624-Z or NSK 624Z or NTN 624Z? Ours is 624-Z — the same seat size, the same type and the same sealing and clearance design.
What this bearing is
624-Z is a deep groove ball bearing with a 4 × 13 × 5 mm seat, execution: single shield · clearance CN. The manufacturer's cross-reference catalogue confirms full interchangeability for 9 designations, including SKF 624-Z, NSK 624Z, NTN 624Z.
Designation equivalents
⌀4 × 13 × 5 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.