SL185072-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 SL185072-TB model number is decoded

envelope 360×540×243 mm with a 90.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 4400 kN and C0 8700 kN; with a C/C0 ratio of 0.51 the 243 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 840 kN, the limiting speed 680 r/min and the thermal reference speed 320 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 12.22 kN per millimetre of the 360 mm bore and 18.11 kN per millimetre of the 243 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 178 kg (178000 g) (1.36 g per mm² of the 540×243 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 360 mm bore, 540 mm outside diameter: at this size the 8700 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs At 178 kg (178000 g), this is a rigid machine element used in rolling stands, crane wheels, winches and planetary stages with tight envelope constraints Reading SL1850: dimension series 50, double row, no cage; the bearing is supplied with annular lubrication features and is intended for oil or grease lubrication in heavy gearboxes Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 4400 kN C. Typical applications include planetary gear bearing positions, construction machinery slewing drives and compact slow-speed agitator drives, where the 540 mm outside diameter and 4400 kN dynamic rating match the duty. In planetary gear bearing positions the unit fits a compact 360 mm seat, and in construction machinery slewing drives the 178 kg mass is part of the rotor inertia calculation. Designers also specify it for compact slow-speed agitator drives, relying on the 243 mm width and the published 8700 kN static rating. The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.

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.
• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
• 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.