SL024912 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 SL024912 model number is decoded

envelope 60×85×25 mm with a 12.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 70 kN and C0 121 kN; with a C/C0 ratio of 0.58 the 25 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 17.7 kN, the limiting speed 4,650 r/min and the thermal reference speed 2,650 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 1.17 kN per millimetre of the 60 mm bore and 2.80 kN per millimetre of the 25 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 470 g (0.22 g per mm² of the 85×25 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 60 mm bore places this bearing in the medium band, where the 85 mm envelope already carries ratings in the tens of kilonewtons SL0249 is the double-row full-complement non-locating (floating) bearing: the flangeless outer ring moves freely over the rollers, taking only radial load while a separate bearing locates the shaft Reading SL0249: the DIN 5412-9 type code family NNCL49 — double row, no cage, flangeless outer ring; the open design is relubricated through groove and holes in the outer ring Typical applications include heavy industrial gearbox shafts, crane travelling-wheel mechanisms and vibrating and oscillating machinery, where the 85 mm outside diameter and 70 kN dynamic rating match the duty. In heavy industrial gearbox shafts the unit fits a compact 60 mm seat, and in crane travelling-wheel mechanisms the 470 g mass suits the compact, space-optimised housing. Designers also specify it for vibrating and oscillating machinery, relying on the 25 mm width and the published 121 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.