SL185018 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 SL185018 model number is decoded

envelope 90×140×67 mm with a 25.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 350 kN and C0 550 kN; with a C/C0 ratio of 0.64 the 67 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 82 kN, the limiting speed 2,850 r/min and the thermal reference speed 2,140 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.89 kN per millimetre of the 90 mm bore and 5.22 kN per millimetre of the 67 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 3.62 kg (3620 g) (0.39 g per mm² of the 140×67 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads with a 90 mm bore this is a heavy-industrial bearing: 3.62 kg of stiff ring and roller set, specified where rigidity matters more than speed Reading SL1850: dimension series 50, double row, no cage; the bearing is supplied with annular lubrication features and is intended for oil or grease lubrication in heavy gearboxes 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 Typical applications include compact slow-speed agitator drives, planetary gear bearing positions and crane travelling-wheel mechanisms, where the 140 mm outside diameter and 350 kN dynamic rating match the duty. In compact slow-speed agitator drives the unit fits a compact 90 mm seat, and in planetary gear bearing positions the 3.62 kg mass is part of the rotor inertia calculation. Designers also specify it for crane travelling-wheel mechanisms, relying on the 67 mm width and the published 550 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
• 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.