SL183068-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 SL183068-TB model number is decoded

envelope 340×520×133 mm with a 90.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 2490 kN and C0 4150 kN; with a C/C0 ratio of 0.60 the 133 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 405 kN, the limiting speed 710 r/min and the thermal reference speed 430 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 7.32 kN per millimetre of the 340 mm bore and 18.72 kN per millimetre of the 133 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 95.8 kg (95800 g) (1.39 g per mm² of the 520×133 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 340 mm bore, 520 mm outside diameter: at this size the 4150 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs In the 520 mm envelope the cageless pack raises C0 to 4150 kN; the trade is the 710 r/min limiting speed, set by roller-to-roller sliding rather than by a cage SL18 bearings are separable for mounting: the inner ring with the self-retained roller set can be fitted separately from the plain-bored outer ring, which simplifies interference-fit assembly Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 2490 kN C. Typical applications include rope drums and winch drums, vibrating and oscillating machinery and marine and offshore winch arrangements, where the 520 mm outside diameter and 2490 kN dynamic rating match the duty. In rope drums and winch drums the unit fits a compact 340 mm seat, and in vibrating and oscillating machinery the 95.8 kg mass is part of the rotor inertia calculation. Designers also specify it for marine and offshore winch arrangements, relying on the 133 mm width and the published 4150 kN static rating. C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
• 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.