SL185034 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 SL185034 model number is decoded

envelope 170×260×122 mm with a 45.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1200 kN and C0 2110 kN; with a C/C0 ratio of 0.57 the 122 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 270 kN, the limiting speed 1,480 r/min and the thermal reference speed 900 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 7.06 kN per millimetre of the 170 mm bore and 9.84 kN per millimetre of the 122 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 22.5 kg (22500 g) (0.71 g per mm² of the 260×122 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 170 mm bore puts this execution at the top of the HR1 range — the 260 mm outside diameter, 122 mm width and 22.5 kg mass are built for primary-industry load cases Reading SL1850: dimension series 50, double row, no cage; the bearing is supplied with annular lubrication features and is intended for oil or grease lubrication in heavy gearboxes Two cageless roller rows inside the 260×122 mm envelope give C 1200 kN and C0 2110 kN — among the highest radial capacities available at the 170 mm bore Typical applications include vibrating and oscillating machinery, heavy industrial gearbox shafts and rope drums and winch drums, where the 260 mm outside diameter and 1200 kN dynamic rating match the duty. In vibrating and oscillating machinery the unit fits a compact 170 mm seat, and in heavy industrial gearbox shafts the 22.5 kg mass is part of the rotor inertia calculation. Designers also specify it for rope drums and winch drums, relying on the 122 mm width and the published 2110 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. 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

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