SL182944-XL 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 SL182944-XL model number is decoded

envelope 220×300×48 mm with a 40.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 650 kN and C0 1030 kN; with a C/C0 ratio of 0.63 the 48 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 152 kN, the limiting speed 1,210 r/min and the thermal reference speed 840 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 2.95 kN per millimetre of the 220 mm bore and 13.54 kN per millimetre of the 48 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 9.9 kg (9900 g) (0.69 g per mm² of the 300×48 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 220 mm bore, 300 mm outside diameter: at this size the 1030 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs Reading the designation: SL18 marks the Schaeffler full-complement semi-locating type with one rib on the outer ring and two ribs on the inner ring; the rollers are axially guided by the inner ring while the outer ring can displace by the catalogue s-value In the 300 mm envelope the cageless pack raises C0 to 1030 kN; the trade is the 1,210 r/min limiting speed, set by roller-to-roller sliding rather than by a cage X-life status (-XL) indicates the current Schaeffler premium execution at 220 mm bore; the 1030 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include crane travelling-wheel mechanisms, compact slow-speed agitator drives and heavy industrial gearbox shafts, where the 300 mm outside diameter and 650 kN dynamic rating match the duty. In crane travelling-wheel mechanisms the unit fits a compact 220 mm seat, and in compact slow-speed agitator drives the 9.9 kg mass is part of the rotor inertia calculation. Designers also specify it for heavy industrial gearbox shafts, relying on the 48 mm width and the published 1030 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. 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

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