SL183028 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 SL183028 model number is decoded

envelope 140×210×53 mm with a 35.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 450 kN and C0 660 kN; with a C/C0 ratio of 0.68 the 53 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 90 kN, the limiting speed 1,820 r/min and the thermal reference speed 1,470 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.21 kN per millimetre of the 140 mm bore and 8.49 kN per millimetre of the 53 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 6.04 kg (6040 g) (0.54 g per mm² of the 210×53 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 140 mm bore puts this execution at the top of the HR1 range — the 210 mm outside diameter, 53 mm width and 6.04 kg mass are built for primary-industry load cases High radial rigidity at 450 kN C is the point of this design: rib-guided rollers in a cageless pack resist deflection in planetary gears, rope drums and vibrating machinery The dimension-series digits place this bearing in the SL18 section of the HR1 plan, giving the 35.0 mm section height between the 140 mm bore and the 210 mm outside diameter Typical applications include planetary gear bearing positions, construction machinery slewing drives and compact slow-speed agitator drives, where the 210 mm outside diameter and 450 kN dynamic rating match the duty. In planetary gear bearing positions the unit fits a compact 140 mm seat, and in construction machinery slewing drives the 6.04 kg mass is part of the rotor inertia calculation. Designers also specify it for compact slow-speed agitator drives, relying on the 53 mm width and the published 660 kN static rating. 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.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• 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.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.