SL192318-TB-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 SL192318-TB-XL model number is decoded

envelope 90×190×64 mm with a 50.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 620 kN and C0 650 kN; with a C/C0 ratio of 0.95 the 64 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 118 kN, the limiting speed 2,400 r/min and the thermal reference speed 1,760 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 6.89 kN per millimetre of the 90 mm bore and 9.69 kN per millimetre of the 64 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 8.83 kg (8830 g) (0.73 g per mm² of the 190×64 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 90 mm bore belongs to the large band, where HR1 full-complement and track-roller designs deliver their highest kilonewton ratings in slow, heavily loaded machinery SL1923 bearings are semi-locating, with one outer-ring rib and two inner-ring ribs; the wide section delivers extreme C0 — 650 kN at 90 mm bore — for slow heavy positions -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 620 kN C rating and longer nominal life come without an envelope change. The -TB suffix denotes the increased axial-load design: profiled roller ends and optimised rib contact geometry lower edge stress and friction at the guide ribs. Typical applications include vibrating and oscillating machinery, heavy industrial gearbox shafts and rope drums and winch drums, where the 190 mm outside diameter and 620 kN dynamic rating match the duty. In vibrating and oscillating machinery the unit fits a compact 90 mm seat, and in heavy industrial gearbox shafts the 8.83 kg mass is part of the rotor inertia calculation. Designers also specify it for rope drums and winch drums, relying on the 64 mm width and the published 650 kN static rating. 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. 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

• 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.
• The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
• 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.