SL182205-XL bearing: complete specifications & equivalents

Specification table

Source: catalog reference (HR1 2026-09-25) · extracted 2026-09-30

Parameters extracted from the official FAG Rolling Bearings catalogue (HR1 2026-09-25); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the SL182205-XL model number is decoded

envelope 25×52×18 mm with a 13.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 51 kN and C0 44.5 kN; with a C/C0 ratio of 1.15 the 18 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 7.5 kN, the limiting speed 9,000 r/min and the thermal reference speed 5,500 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.04 kN per millimetre of the 25 mm bore and 2.83 kN per millimetre of the 18 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 180 g (0.19 g per mm² of the 52×18 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 25 mm bore this size balances the 52 mm outside diameter against machineability of the adjacent parts — the most frequently specified band in the HR1 range The dimension-series digits place this bearing in the SL18 section of the HR1 plan, giving the 13.5 mm section height between the 25 mm bore and the 52 mm outside diameter SL18 bearings are separable for mounting: the inner ring with the self-retained roller set can be fitted separately from the plain-bored outer ring, which simplifies interference-fit assembly -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 51 kN C rating and longer nominal life come without an envelope change. Typical applications include vibrating and oscillating machinery, heavy industrial gearbox shafts and rope drums and winch drums, where the 52 mm outside diameter and 51 kN dynamic rating match the duty. In vibrating and oscillating machinery the unit fits a compact 25 mm seat, and in heavy industrial gearbox shafts the 180 g mass suits the compact, space-optimised housing. Designers also specify it for rope drums and winch drums, relying on the 18 mm width and the published 44.5 kN static rating. The split outer ring of SL0149 is joined by retaining rings for handling only; never use those rings as a thrust face in the design. C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The split outer ring of SL0149 is joined by retaining rings for handling only; never use those rings as a thrust face in the design.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
• Press-fit the correct ring: the rotating ring needs interference while the floating ring must slide on its seat to perform the non-locating function.