SL185056-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 SL185056-TB model number is decoded

envelope 280×420×190 mm with a 70.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 2850 kN and C0 5300 kN; with a C/C0 ratio of 0.54 the 190 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 600 kN, the limiting speed 900 r/min and the thermal reference speed 460 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 10.18 kN per millimetre of the 280 mm bore and 15.00 kN per millimetre of the 190 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 88 kg (88000 g) (1.10 g per mm² of the 420×190 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 280 mm bore, 420 mm outside diameter: at this size the 5300 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs 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 At 88 kg (88000 g), this is a rigid machine element used in rolling stands, crane wheels, winches and planetary stages with tight envelope constraints Reading -TB: Schaeffler's enhanced-rib design for full-complement bearings; axial friction torque is reduced while radial ratings stay at 2850 kN C. Typical applications include construction machinery slewing drives, material handling conveyor pulleys and planetary gear bearing positions, where the 420 mm outside diameter and 2850 kN dynamic rating match the duty. In construction machinery slewing drives the unit fits a compact 280 mm seat, and in material handling conveyor pulleys the 88 kg mass is part of the rotor inertia calculation. Designers also specify it for planetary gear bearing positions, relying on the 190 mm width and the published 5300 kN static rating. 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 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

• 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 bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.