SL183017 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 SL183017 model number is decoded

envelope 85×130×34 mm with a 22.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 175 kN and C0 231 kN; with a C/C0 ratio of 0.76 the 34 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 35 kN, the limiting speed 3,050 r/min and the thermal reference speed 2,360 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.06 kN per millimetre of the 85 mm bore and 5.15 kN per millimetre of the 34 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 1.51 kg (1510 g) (0.34 g per mm² of the 130×34 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 85 mm bore the 130 mm outside diameter and 34 mm width target rolling stands, construction machinery and heavy gearboxes; the limiting speed drops to 3,050 r/min 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 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 Typical applications include hydraulic pumps and radial piston pumps, marine and offshore winch arrangements and rolling-mill and steel-industry drives, where the 130 mm outside diameter and 175 kN dynamic rating match the duty. In hydraulic pumps and radial piston pumps the unit fits a compact 85 mm seat, and in marine and offshore winch arrangements the 1.51 kg mass is part of the rotor inertia calculation. Designers also specify it for rolling-mill and steel-industry drives, relying on the 34 mm width and the published 231 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. 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

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