SL182928-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 SL182928-XL model number is decoded

envelope 140×190×30 mm with a 25.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 260 kN and C0 375 kN; with a C/C0 ratio of 0.69 the 30 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 61 kN, the limiting speed 1,950 r/min and the thermal reference speed 1,370 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 1.86 kN per millimetre of the 140 mm bore and 8.67 kN per millimetre of the 30 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 2.42 kg (2420 g) (0.42 g per mm² of the 190×30 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 140 mm bore this is among the largest catalogue sizes; the 1,950 r/min limiting speed confirms a slow-speed, extreme-load application such as a slewing or rolling-mill position In the 190 mm envelope the cageless pack raises C0 to 375 kN; the trade is the 1,950 r/min limiting speed, set by roller-to-roller sliding rather than by a cage High radial rigidity at 260 kN C is the point of this design: rib-guided rollers in a cageless pack resist deflection in planetary gears, rope drums and vibrating machinery X-life status (-XL) indicates the current Schaeffler premium execution at 140 mm bore; the 375 kN C0 rating reflects the improved rolling-contact geometry. Typical applications include planetary gear bearing positions, construction machinery slewing drives and compact slow-speed agitator drives, where the 190 mm outside diameter and 260 kN dynamic rating match the duty. In planetary gear bearing positions the unit fits a compact 140 mm seat, and in construction machinery slewing drives the 2.42 kg mass is part of the rotor inertia calculation. Designers also specify it for compact slow-speed agitator drives, relying on the 30 mm width and the published 375 kN static rating. There is no cage: do not apply caged-bearing speed rules — the printed limiting speed is a hard kinematic ceiling set by roller-to-roller contact. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• There is no cage: do not apply caged-bearing speed rules — the printed limiting speed is a hard kinematic ceiling set by roller-to-roller contact.
• 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.
• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.