SL014944 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 SL014944 model number is decoded

envelope 220×300×80 mm with a 40.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 700 kN and C0 1550 kN; with a C/C0 ratio of 0.45 the 80 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 185 kN, the limiting speed 1,220 r/min and the thermal reference speed 750 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.18 kN per millimetre of the 220 mm bore and 8.75 kN per millimetre of the 80 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 17.2 kg (17200 g) (0.72 g per mm² of the 300×80 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 220 mm bore, 300 mm outside diameter: at this size the 1550 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs Inside the 220×300×80 mm envelope the two cageless rows provide C0 1550 kN, the capacity this series is selected for in heavy gearbox and drum positions SL0149 is the double-row full-complement locating bearing: it supports the radial load and axial loads in both directions, fixing the shaft axially at that position Typical applications include vibrating and oscillating machinery, heavy industrial gearbox shafts and rope drums and winch drums, where the 300 mm outside diameter and 700 kN dynamic rating match the duty. In vibrating and oscillating machinery the unit fits a compact 220 mm seat, and in heavy industrial gearbox shafts the 17.2 kg mass is part of the rotor inertia calculation. Designers also specify it for rope drums and winch drums, relying on the 80 mm width and the published 1550 kN static rating. 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. 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

• 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.
• 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.