SL185040-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 SL185040-TB model number is decoded

envelope 200×310×150 mm with a 55.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1630 kN and C0 3000 kN; with a C/C0 ratio of 0.54 the 150 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 375 kN, the limiting speed 1,230 r/min and the thermal reference speed 710 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 8.15 kN per millimetre of the 200 mm bore and 10.87 kN per millimetre of the 150 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 40.4 kg (40400 g) (0.87 g per mm² of the 310×150 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 200 mm bore, 310 mm outside diameter: at this size the 3000 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs Two cageless roller rows inside the 310×150 mm envelope give C 1630 kN and C0 3000 kN — among the highest radial capacities available at the 200 mm bore The SL1850 tolerates no angular misalignment — the two roller rows distribute load only when shaft and housing axes are parallel, so housing bore alignment is a mounting requirement Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 1630 kN C. Typical applications include compact slow-speed agitator drives, planetary gear bearing positions and crane travelling-wheel mechanisms, where the 310 mm outside diameter and 1630 kN dynamic rating match the duty. In compact slow-speed agitator drives the unit fits a compact 200 mm seat, and in planetary gear bearing positions the 40.4 kg mass is part of the rotor inertia calculation. Designers also specify it for crane travelling-wheel mechanisms, relying on the 150 mm width and the published 3000 kN static rating. 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. Use the rib structure correctly: SL18/SL1850 give one-direction axial guidance, SL0149 locates both ways and SL0249 floats — pairing two locating bearings on one shaft binds thermal growth.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• Use the rib structure correctly: SL18/SL1850 give one-direction axial guidance, SL0149 locates both ways and SL0249 floats — pairing two locating bearings on one shaft binds thermal growth.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.