SL192306-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 SL192306-XL model number is decoded

envelope 30×72×27 mm with a 21.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 100 kN and C0 87 kN; with a C/C0 ratio of 1.15 the 27 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 14.8 kN, the limiting speed 6,800 r/min and the thermal reference speed 4,050 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.33 kN per millimetre of the 30 mm bore and 3.70 kN per millimetre of the 27 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 560 g (0.29 g per mm² of the 72×27 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 30 mm bore this size balances the 72 mm outside diameter against machineability of the adjacent parts — the most frequently specified band in the HR1 range Reading SL1923: full-complement roller set, no cage, self-guided rollers; the wide envelope is chosen where a narrow-section bearing would fit radially but lacks load capacity At 6,800 r/min limiting speed the SL1923 is a slow-speed, high-load bearing — the cageless rollers trade kinematic speed for the 100 kN dynamic rating As an X-life (-XL) bearing it benefits from the optimised surface finish that reduces friction and raises the fatigue strength behind the 14.8 kN Cur value. Typical applications include material handling conveyor pulleys, rolling-mill and steel-industry drives and construction machinery slewing drives, where the 72 mm outside diameter and 100 kN dynamic rating match the duty. In material handling conveyor pulleys the unit fits a compact 30 mm seat, and in rolling-mill and steel-industry drives the 560 g mass suits the compact, space-optimised housing. Designers also specify it for construction machinery slewing drives, relying on the 27 mm width and the published 87 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.