SL182211-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 SL182211-XL model number is decoded

envelope 55×100×25 mm with a 22.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 140 kN and C0 148 kN; with a C/C0 ratio of 0.95 the 25 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 25.5 kN, the limiting speed 4,350 r/min and the thermal reference speed 2,700 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.55 kN per millimetre of the 55 mm bore and 5.60 kN per millimetre of the 25 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 870 g (0.35 g per mm² of the 100×25 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 55 mm bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 25 mm width as a standard mounting space High radial rigidity at 140 kN C is the point of this design: rib-guided rollers in a cageless pack resist deflection in planetary gears, rope drums and vibrating machinery The dimension-series digits place this bearing in the SL18 section of the HR1 plan, giving the 22.5 mm section height between the 55 mm bore and the 100 mm outside diameter As an X-life (-XL) bearing it benefits from the optimised surface finish that reduces friction and raises the fatigue strength behind the 25.5 kN Cur value. Typical applications include planetary gear bearing positions, construction machinery slewing drives and compact slow-speed agitator drives, where the 100 mm outside diameter and 140 kN dynamic rating match the duty. In planetary gear bearing positions the unit fits a compact 55 mm seat, and in construction machinery slewing drives the 870 g mass suits the compact, space-optimised housing. Designers also specify it for compact slow-speed agitator drives, relying on the 25 mm width and the published 148 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. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.

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.
• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.