SL183056-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 SL183056-TB model number is decoded

envelope 280×420×106 mm with a 70.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1650 kN and C0 2650 kN; with a C/C0 ratio of 0.62 the 106 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 300 kN, the limiting speed 900 r/min and the thermal reference speed 590 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 5.89 kN per millimetre of the 280 mm bore and 15.57 kN per millimetre of the 106 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 48 kg (48000 g) (1.08 g per mm² of the 420×106 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 280 mm bore puts this execution at the top of the HR1 range — the 420 mm outside diameter, 106 mm width and 48 kg mass are built for primary-industry load cases 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 In the 420 mm envelope the cageless pack raises C0 to 2650 kN; the trade is the 900 r/min limiting speed, set by roller-to-roller sliding rather than by a cage TB-design bearings use revised roller-end curvature to protect the ribs under combined load — relevant at 280 mm bore where the semi-locating function carries real thrust. Typical applications include crane travelling-wheel mechanisms, compact slow-speed agitator drives and heavy industrial gearbox shafts, where the 420 mm outside diameter and 1650 kN dynamic rating match the duty. In crane travelling-wheel mechanisms the unit fits a compact 280 mm seat, and in compact slow-speed agitator drives the 48 kg mass is part of the rotor inertia calculation. Designers also specify it for heavy industrial gearbox shafts, relying on the 106 mm width and the published 2650 kN static rating. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

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