SL185036-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 SL185036-TB model number is decoded

envelope 180×280×136 mm with a 50.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1390 kN and C0 2480 kN; with a C/C0 ratio of 0.56 the 136 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 315 kN, the limiting speed 1,370 r/min and the thermal reference speed 820 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 7.72 kN per millimetre of the 180 mm bore and 10.22 kN per millimetre of the 136 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 29.9 kg (29900 g) (0.79 g per mm² of the 280×136 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 180 mm bore this is among the largest catalogue sizes; the 1,370 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position The semi-locating SL1850 structure uses inner-ring ribs with a retaining ring on the flangeless side; it carries high radial loads plus axial load in one direction, which is why it often pairs with an SL0149 locating bearing The -TB feature concerns the rib contact, not the envelope: the 180×280×136 mm dimensions and 29.9 kg mass follow the standard series plan. Typical applications include construction machinery slewing drives, material handling conveyor pulleys and planetary gear bearing positions, where the 280 mm outside diameter and 1390 kN dynamic rating match the duty. In construction machinery slewing drives the unit fits a compact 180 mm seat, and in material handling conveyor pulleys the 29.9 kg mass is part of the rotor inertia calculation. Designers also specify it for planetary gear bearing positions, relying on the 136 mm width and the published 2480 kN static rating. 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. The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
• 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.