SL185009-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 SL185009-XL model number is decoded

envelope 45×75×40 mm with a 15.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 120 kN and C0 148 kN; with a C/C0 ratio of 0.81 the 40 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 5,800 r/min and the thermal reference speed 3,950 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.67 kN per millimetre of the 45 mm bore and 3.00 kN per millimetre of the 40 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 710 g (0.24 g per mm² of the 75×40 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 45 mm bore marks the medium range: mounting forces and fits become critical, and the 710 g mass calls for proper induction or press tooling rather than hand fitting At 710 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 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 construction machinery slewing drives, material handling conveyor pulleys and planetary gear bearing positions, where the 75 mm outside diameter and 120 kN dynamic rating match the duty. In construction machinery slewing drives the unit fits a compact 45 mm seat, and in material handling conveyor pulleys the 710 g mass suits the compact, space-optimised housing. Designers also specify it for planetary gear bearing positions, relying on the 40 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.