SL024960 bearing: complete specifications & equivalents

The SL024960 is a ISO 15 radial bearing sized 300 x 420 x 118 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.

Bearing dimension schematic Front view shows outer diameter D and bore d; side section shows width B. D = 420 mm d = 300 B = 118 mm side section front view
Principal dimensions: bore d 300 mm, outer diameter D 420 mm, width B 118 mm. Schematic, not to scale.

Specification table

ParameterValue
Brand FAG
Bore diameter d 300 mm
Outer diameter D 420 mm
Width B 118 mm
Material GCr15
Seal / shield open
Internal clearance CN
Tolerance class P0
Cage none
Basic dynamic load rating C 1630 kN
Basic static load rating C0 3700 kN
Fatigue load limit Pu 410 kN
Reference speed (thermal) 445 rpm
Limiting speed (mechanical) 870 rpm
Operating temperature -40 to +120 °C
Mass 51900 g
Manufacturer designation SL024960
Standard ISO 15
Catalog version HR1 2026-09-25
Last verified 2026-09-30

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.

Dimensions in inches & sl0249-series range

Bore d11.811 in
Outer diameter D16.535 in
Width B4.646 in
ISO bore code60
Radial section height (D−d)/260 mm
Smallest bore in sl0249-series60 mm
Largest outer diameter in sl0249-series540 mm
Width range across sl0249-series25–140 mm
Bore position in sl0249-series (smallest first)20 of 25
Bore above smallest sl0249-series size240 mm

Cross references & equivalents

Equivalent modelBrandMatch levelNote
SL024960 ISO 15 full
Dimensions and internal design equivalent — standard interchange.
ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier.

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 SL024960 model number is decoded

envelope 300×420×118 mm with a 60.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1630 kN and C0 3700 kN; with a C/C0 ratio of 0.44 the 118 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 410 kN, the limiting speed 870 r/min and the thermal reference speed 445 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 5.43 kN per millimetre of the 300 mm bore and 13.81 kN per millimetre of the 118 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 51.9 kg (51900 g) (1.05 g per mm² of the 420×118 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 300 mm bore puts this execution at the top of the HR1 range — the 420 mm outside diameter, 118 mm width and 51.9 kg mass are built for primary-industry load cases The non-locating structure has two inner rings with side ribs and a plain outer ring joined by retaining rings for handling; axial displacement of shaft relative to housing occurs inside the bearing without constraint 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 rolling-mill and steel-industry drives, hydraulic pumps and radial piston pumps and material handling conveyor pulleys, where the 420 mm outside diameter and 1630 kN dynamic rating match the duty. In rolling-mill and steel-industry drives the unit fits a compact 300 mm seat, and in hydraulic pumps and radial piston pumps the 51.9 kg mass is part of the rotor inertia calculation. Designers also specify it for material handling conveyor pulleys, relying on the 118 mm width and the published 3700 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.

Typical equipment & failure modes

Common applications

  • marine and offshore winch arrangements
  • crane travelling-wheel mechanisms
  • hydraulic pumps and radial piston pumps
  • rolling-mill and steel-industry drives

Known failure patterns

  • raceway pitting from overloaded slow-speed positions where the cageless rollers repeatedly stress one contact band
  • rib and roller-end scoring when applied axial thrust exceeds the semi-locating capacity
  • roller smearing from roller-to-roller sliding at speeds above the limiting value
  • edge loading and premature spalling caused by undetected shaft/housing misalignment (full-complement rows cannot self-align)
  • brinelling of the raceways from static shock during mounting or transport of the heavy rotor
  • lubricant starvation in the tightly packed roller set, especially in the double-row executions
  • freting and creep on a loose ring seat under a rotating load
  • contamination wear in open gearbox positions with damaged seals or breathers
  • false brinelling from micro-movement while the shaft is stationary under vibration

Selection pitfalls — read before you substitute

  • Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
  • The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
  • 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.

Frequently asked questions

What are the dimensions of the SL024960?

The SL024960 is a SL0249 double-row full-complement non-locating cylindrical roller bearing with 420 mm outside diameter, 300 mm bore and 118 mm width, envelope 300×420×118 mm. Mass is 51.9 kg.

What does the SL024960 designation mean in the FAG/INA HR1 catalogue?

SL024960 identifies this SL0249 double-row full-complement non-locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue. The envelope is 300×420×118 mm and the catalogue ratings are C 1630 kN, C0 3700 kN, Cur 410 kN.

What is the load capacity of the SL024960?

The basic dynamic load rating C is 1630 kN and the basic static load rating C0 is 3700 kN; the fatigue load limit Cur is 410 kN.

What is the maximum speed of the SL024960?

The limiting speed is 870 r/min and the thermal reference speed is 445 r/min. In the Schaeffler catalogue the reference speed is the thermally permissible running speed under defined load; the lower of the two values governs each application.

What is the locating function of the SL024960?

The SL0249 is non-locating: the flangeless outer ring floats freely and takes radial load only, making it the standard partner for a locating SL0149.

Reviewed & verified by the MPN Base engineering desk against source catalog HR1 2026-09-25 on 2026-09-30. Read our editorial & correction policy.