GN203-XL-KRR-B
Holding a bearing marked FAFNIR GN203KRRB? Ours is GN203-XL-KRR-B — the same seat size, the same type and the same sealing and clearance design.
What this bearing is
GN203-XL-KRR-B is a Radial insert ball bearing with a 55.562 × 120 × 50.4 mm seat, execution: open. The manufacturer's cross-reference catalogue confirms full interchangeability for the designation FAFNIR GN203KRRB.
Designation equivalents
⌀55.562 × 120 × 50.4 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.