SL185006-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 SL185006-XL model number is decoded

envelope 30×55×34 mm with a 12.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 78 kN and C0 84 kN; with a C/C0 ratio of 0.93 the 34 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 15.2 kN, the limiting speed 8,100 r/min and the thermal reference speed 5,300 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.60 kN per millimetre of the 30 mm bore and 2.29 kN per millimetre of the 34 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 350 g (0.19 g per mm² of the 55×34 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 30 mm bore falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty 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 Full-complement kinematics cap the speed at 8,100 r/min (reference 5,300 r/min); below that limit the double-row pack offers exceptional stiffness for its section X-life status (-XL) indicates the current Schaeffler premium execution at 30 mm bore; the 84 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include material handling conveyor pulleys, rolling-mill and steel-industry drives and construction machinery slewing drives, where the 55 mm outside diameter and 78 kN dynamic rating match the duty. In material handling conveyor pulleys the unit fits a compact 30 mm seat, and in rolling-mill and steel-industry drives the 350 g mass suits the compact, space-optimised housing. Designers also specify it for construction machinery slewing drives, relying on the 34 mm width and the published 84 kN static rating. C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film. 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

• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
• 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.
• Press-fit the correct ring: the rotating ring needs interference while the floating ring must slide on its seat to perform the non-locating function.