SL185052-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 SL185052-TB model number is decoded

envelope 260×400×190 mm with a 70.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 2750 kN and C0 5000 kN; with a C/C0 ratio of 0.55 the 190 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 580 kN, the limiting speed 940 r/min and the thermal reference speed 490 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 10.58 kN per millimetre of the 260 mm bore and 14.47 kN per millimetre of the 190 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 82.6 kg (82600 g) (1.09 g per mm² of the 400×190 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 260 mm bore, 400 mm outside diameter: at this size the 5000 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs Full-complement kinematics cap the speed at 940 r/min (reference 490 r/min); below that limit the double-row pack offers exceptional stiffness for its section 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 -TB marks the TB execution with higher permissible axial load — the improved roller-end/rib lubrication film carries more thrust than the standard full-complement design. Typical applications include compact slow-speed agitator drives, planetary gear bearing positions and crane travelling-wheel mechanisms, where the 400 mm outside diameter and 2750 kN dynamic rating match the duty. In compact slow-speed agitator drives the unit fits a compact 260 mm seat, and in planetary gear bearing positions the 82.6 kg mass is part of the rotor inertia calculation. Designers also specify it for crane travelling-wheel mechanisms, relying on the 190 mm width and the published 5000 kN static rating. 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. 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 split outer ring of SL0149 is joined by retaining rings for handling only; never use those rings as a thrust face in the design.
• 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.
• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.