SL182972-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 SL182972-TB model number is decoded

envelope 360×480×72 mm with a 60.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1280 kN and C0 2600 kN; with a C/C0 ratio of 0.49 the 72 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 280 kN, the limiting speed 730 r/min and the thermal reference speed 430 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.56 kN per millimetre of the 360 mm bore and 17.78 kN per millimetre of the 72 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 36.4 kg (36400 g) (1.05 g per mm² of the 480×72 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 360 mm bore this is among the largest catalogue sizes; the 730 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position 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 Reading the designation: SL18 marks the Schaeffler full-complement semi-locating type with one rib on the outer ring and two ribs on the inner ring; the rollers are axially guided by the inner ring while the outer ring can displace by the catalogue s-value Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 1280 kN C. Typical applications include material handling conveyor pulleys, rolling-mill and steel-industry drives and construction machinery slewing drives, where the 480 mm outside diameter and 1280 kN dynamic rating match the duty. In material handling conveyor pulleys the unit fits a compact 360 mm seat, and in rolling-mill and steel-industry drives the 36.4 kg mass is part of the rotor inertia calculation. Designers also specify it for construction machinery slewing drives, relying on the 72 mm width and the published 2600 kN static rating. The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling. 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 bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
• 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.