SL185011-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 SL185011-XL model number is decoded

envelope 55×90×46 mm with a 17.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 206 kN and C0 275 kN; with a C/C0 ratio of 0.75 the 46 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 46 kN, the limiting speed 4,550 r/min and the thermal reference speed 2,900 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.75 kN per millimetre of the 55 mm bore and 4.48 kN per millimetre of the 46 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 1.16 kg (1160 g) (0.28 g per mm² of the 90×46 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 46 mm width as a standard mounting space At 1.16 kg (1160 g), this is a rigid machine element used in rolling stands, crane wheels, winches and planetary stages with tight envelope constraints The SL1850 tolerates no angular misalignment — the two roller rows distribute load only when shaft and housing axes are parallel, so housing bore alignment is a mounting requirement The -XL suffix is the Schaeffler X-life mark: interchangeable envelope with the basic bearing, but higher load capacity and lower running temperature at the 4,550 r/min limit. Typical applications include heavy industrial gearbox shafts, crane travelling-wheel mechanisms and vibrating and oscillating machinery, where the 90 mm outside diameter and 206 kN dynamic rating match the duty. In heavy industrial gearbox shafts the unit fits a compact 55 mm seat, and in crane travelling-wheel mechanisms the 1.16 kg mass is part of the rotor inertia calculation. Designers also specify it for vibrating and oscillating machinery, relying on the 46 mm width and the published 275 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.