SL183080-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 SL183080-TB model number is decoded

envelope 400×600×148 mm with a 100.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 3050 kN and C0 5400 kN; with a C/C0 ratio of 0.56 the 148 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 520 kN, the limiting speed 610 r/min and the thermal reference speed 345 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 7.63 kN per millimetre of the 400 mm bore and 20.61 kN per millimetre of the 148 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 140 kg (140000 g) (1.58 g per mm² of the 600×148 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 400 mm bore puts this execution at the top of the HR1 range — the 600 mm outside diameter, 148 mm width and 140 kg mass are built for primary-industry load cases The semi-locating function means this bearing locates the shaft in one axial direction and floats in the other — useful in two-bearing shafts where one position is fixed and the other absorbs expansion In the 600 mm envelope the cageless pack raises C0 to 5400 kN; the trade is the 610 r/min limiting speed, set by roller-to-roller sliding rather than by a cage The -TB suffix denotes the increased axial-load design: profiled roller ends and optimised rib contact geometry lower edge stress and friction at the guide ribs. Typical applications include material handling conveyor pulleys, rolling-mill and steel-industry drives and construction machinery slewing drives, where the 600 mm outside diameter and 3050 kN dynamic rating match the duty. In material handling conveyor pulleys the unit fits a compact 400 mm seat, and in rolling-mill and steel-industry drives the 140 kg mass is part of the rotor inertia calculation. Designers also specify it for construction machinery slewing drives, relying on the 148 mm width and the published 5400 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. 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

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