SL183038 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 SL183038 model number is decoded

envelope 190×290×75 mm with a 50.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 830 kN and C0 1300 kN; with a C/C0 ratio of 0.64 the 75 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 163 kN, the limiting speed 1,320 r/min and the thermal reference speed 970 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 4.37 kN per millimetre of the 190 mm bore and 11.07 kN per millimetre of the 75 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 17 kg (17000 g) (0.78 g per mm² of the 290×75 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 190 mm bore this is among the largest catalogue sizes; the 1,320 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position SL183038 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 rope drums and winch drums, vibrating and oscillating machinery and marine and offshore winch arrangements, where the 290 mm outside diameter and 830 kN dynamic rating match the duty. In rope drums and winch drums the unit fits a compact 190 mm seat, and in vibrating and oscillating machinery the 17 kg mass is part of the rotor inertia calculation. Designers also specify it for marine and offshore winch arrangements, relying on the 75 mm width and the published 1300 kN static rating. 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. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• 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.
• 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.