SL185048-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 SL185048-TB model number is decoded

envelope 240×360×160 mm with a 60.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 2080 kN and C0 4000 kN; with a C/C0 ratio of 0.52 the 160 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 470 kN, the limiting speed 1,040 r/min and the thermal reference speed 550 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 8.67 kN per millimetre of the 240 mm bore and 13.00 kN per millimetre of the 160 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 55.2 kg (55200 g) (0.96 g per mm² of the 360×160 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 240 mm bore this is among the largest catalogue sizes; the 1,040 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position Two cageless roller rows inside the 360×160 mm envelope give C 2080 kN and C0 4000 kN — among the highest radial capacities available at the 240 mm bore Full-complement kinematics cap the speed at 1,040 r/min (reference 550 r/min); below that limit the double-row pack offers exceptional stiffness for its section Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 2080 kN C. Typical applications include heavy industrial gearbox shafts, crane travelling-wheel mechanisms and vibrating and oscillating machinery, where the 360 mm outside diameter and 2080 kN dynamic rating match the duty. In heavy industrial gearbox shafts the unit fits a compact 240 mm seat, and in crane travelling-wheel mechanisms the 55.2 kg mass is part of the rotor inertia calculation. Designers also specify it for vibrating and oscillating machinery, relying on the 160 mm width and the published 4000 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. 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

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