SL183020 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 SL183020 model number is decoded

envelope 100×150×37 mm with a 25.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 216 kN and C0 300 kN; with a C/C0 ratio of 0.72 the 37 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 43.5 kN, the limiting speed 2,600 r/min and the thermal reference speed 2,040 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.16 kN per millimetre of the 100 mm bore and 5.84 kN per millimetre of the 37 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 2.15 kg (2150 g) (0.39 g per mm² of the 150×37 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 100 mm bore the 150 mm outside diameter and 37 mm width target rolling stands, construction machinery and heavy gearboxes; the limiting speed drops to 2,600 r/min 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 SL183020 is a single-row full-complement cylindrical roller bearing: no cage is fitted, so the maximum number of rollers runs between the rings, and the rollers guide themselves on the two inner-ring ribs Typical applications include rolling-mill and steel-industry drives, hydraulic pumps and radial piston pumps and material handling conveyor pulleys, where the 150 mm outside diameter and 216 kN dynamic rating match the duty. In rolling-mill and steel-industry drives the unit fits a compact 100 mm seat, and in hydraulic pumps and radial piston pumps the 2.15 kg mass is part of the rotor inertia calculation. Designers also specify it for material handling conveyor pulleys, relying on the 37 mm width and the published 300 kN static rating. There is no cage: do not apply caged-bearing speed rules — the printed limiting speed is a hard kinematic ceiling set by roller-to-roller contact. 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

• There is no cage: do not apply caged-bearing speed rules — the printed limiting speed is a hard kinematic ceiling set by roller-to-roller contact.
• 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.
• 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.