SL183011-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 SL183011-XL model number is decoded

envelope 55×90×26 mm with a 17.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 120 kN and C0 136 kN; with a C/C0 ratio of 0.88 the 26 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 23 kN, the limiting speed 4,550 r/min and the thermal reference speed 3,100 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 55 mm bore and 4.62 kN per millimetre of the 26 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 640 g (0.27 g per mm² of the 90×26 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 55 mm bore marks the medium range: mounting forces and fits become critical, and the 640 g mass calls for proper induction or press tooling rather than hand fitting SL18 bearings are separable for mounting: the inner ring with the self-retained roller set can be fitted separately from the plain-bored outer ring, which simplifies interference-fit assembly In the 90 mm envelope the cageless pack raises C0 to 136 kN; the trade is the 4,550 r/min limiting speed, set by roller-to-roller sliding rather than by a cage X-life status (-XL) indicates the current Schaeffler premium execution at 55 mm bore; the 136 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include construction machinery slewing drives, material handling conveyor pulleys and planetary gear bearing positions, where the 90 mm outside diameter and 120 kN dynamic rating match the duty. In construction machinery slewing drives the unit fits a compact 55 mm seat, and in material handling conveyor pulleys the 640 g mass suits the compact, space-optimised housing. Designers also specify it for planetary gear bearing positions, relying on the 26 mm width and the published 136 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. 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.

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