SL182210-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 SL182210-XL model number is decoded

envelope 50×90×23 mm with a 20.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 109 kN and C0 111 kN; with a C/C0 ratio of 0.98 the 23 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 18.5 kN, the limiting speed 4,750 r/min and the thermal reference speed 3,000 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.18 kN per millimetre of the 50 mm bore and 4.74 kN per millimetre of the 23 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 640 g (0.31 g per mm² of the 90×23 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 50 mm bore this is a mainstream industrial size — conveyor drives, winches and medium gearboxes use the 23 mm width as a standard mounting space The dimension-series digits place this bearing in the SL18 section of the HR1 plan, giving the 20.0 mm section height between the 50 mm bore and the 90 mm outside diameter The semi-locating function means this bearing locates the shaft in one axial direction and floats in the other — useful in two-bearing shafts where one position is fixed and the other absorbs expansion As an X-life (-XL) bearing it benefits from the optimised surface finish that reduces friction and raises the fatigue strength behind the 18.5 kN Cur value. Typical applications include rolling-mill and steel-industry drives, hydraulic pumps and radial piston pumps and material handling conveyor pulleys, where the 90 mm outside diameter and 109 kN dynamic rating match the duty. In rolling-mill and steel-industry drives the unit fits a compact 50 mm seat, and in hydraulic pumps and radial piston pumps the 640 g mass suits the compact, space-optimised housing. Designers also specify it for material handling conveyor pulleys, relying on the 23 mm width and the published 111 kN static rating. The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling. 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 bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
• Use the rib structure correctly: SL18/SL1850 give one-direction axial guidance, SL0149 locates both ways and SL0249 floats — pairing two locating bearings on one shaft binds thermal growth.