SL185064-TB 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 SL185064-TB model number is decoded

envelope 320×480×218 mm with a 80.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 3550 kN and C0 6900 kN; with a C/C0 ratio of 0.51 the 218 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 700 kN, the limiting speed 770 r/min and the thermal reference speed 375 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 11.09 kN per millimetre of the 320 mm bore and 16.28 kN per millimetre of the 218 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 128.4 kg (128400 g) (1.23 g per mm² of the 480×218 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 320 mm bore, 480 mm outside diameter: at this size the 6900 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs SL1850 denotes the double-row full-complement semi-locating bearing: two roller rows share the 320 mm bore, and the arrangement guides the shaft axially in one direction while allowing displacement s in the other The semi-locating SL1850 structure uses inner-ring ribs with a retaining ring on the flangeless side; it carries high radial loads plus axial load in one direction, which is why it often pairs with an SL0149 locating bearing -TB marks the TB execution with higher permissible axial load — the improved roller-end/rib lubrication film carries more thrust than the standard full-complement design. Typical applications include rope drums and winch drums, vibrating and oscillating machinery and marine and offshore winch arrangements, where the 480 mm outside diameter and 3550 kN dynamic rating match the duty. In rope drums and winch drums the unit fits a compact 320 mm seat, and in vibrating and oscillating machinery the 128.4 kg mass is part of the rotor inertia calculation. Designers also specify it for marine and offshore winch arrangements, relying on the 218 mm width and the published 6900 kN static rating. C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
• 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 bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.