SL182209-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 SL182209-XL model number is decoded

envelope 45×85×23 mm with a 20.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 101 kN and C0 98 kN; with a C/C0 ratio of 1.03 the 23 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 16.3 kN, the limiting speed 5,300 r/min and the thermal reference speed 3,450 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.24 kN per millimetre of the 45 mm bore and 4.39 kN per millimetre of the 23 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 590 g (0.30 g per mm² of the 85×23 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 45 mm bore places this bearing in the medium band, where the 85 mm envelope already carries ratings in the tens of kilonewtons 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 85 mm envelope the cageless pack raises C0 to 98 kN; the trade is the 5,300 r/min limiting speed, set by roller-to-roller sliding rather than by a cage The -XL suffix marks the X-life execution: refined raceway topography and upgraded materials lift the basic ratings versus the non-X-life bearing at the same 45×85×23 mm envelope. Typical applications include rolling-mill and steel-industry drives, hydraulic pumps and radial piston pumps and material handling conveyor pulleys, where the 85 mm outside diameter and 101 kN dynamic rating match the duty. In rolling-mill and steel-industry drives the unit fits a compact 45 mm seat, and in hydraulic pumps and radial piston pumps the 590 g mass suits the compact, space-optimised housing. Designers also specify it for material handling conveyor pulleys, relying on the 23 mm width and the published 98 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.