SL182980-TB 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 SL182980-TB model number is decoded

envelope 400×540×82 mm with a 70.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1710 kN and C0 3500 kN; with a C/C0 ratio of 0.49 the 82 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 360 kN, the limiting speed 650 r/min and the thermal reference speed 350 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 4.28 kN per millimetre of the 400 mm bore and 20.85 kN per millimetre of the 82 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 54.3 kg (54300 g) (1.23 g per mm² of the 540×82 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 400 mm bore this is among the largest catalogue sizes; the 650 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position SL182980-TB 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 Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 1710 kN C. Typical applications include vibrating and oscillating machinery, heavy industrial gearbox shafts and rope drums and winch drums, where the 540 mm outside diameter and 1710 kN dynamic rating match the duty. In vibrating and oscillating machinery the unit fits a compact 400 mm seat, and in heavy industrial gearbox shafts the 54.3 kg mass is part of the rotor inertia calculation. Designers also specify it for rope drums and winch drums, relying on the 82 mm width and the published 3500 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.