SL024918 bearing: complete specifications & equivalents
The SL024918 is a ISO 15 radial bearing sized 90 x 125 x 35 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 90 mm |
| Outer diameter D | 125 mm |
| Width B | 35 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 153 kN |
| Basic static load rating C0 | 290 kN |
| Fatigue load limit Pu | 39.5 kN |
| Reference speed (thermal) | 1870 rpm |
| Limiting speed (mechanical) | 3050 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1300 g |
| Manufacturer designation | SL024918 |
| 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 d | 3.543 in |
|---|---|
| Outer diameter D | 4.921 in |
| Width B | 1.378 in |
| ISO bore code | 18 |
| Radial section height (D−d)/2 | 17.5 mm |
| Smallest bore in sl0249-series | 60 mm |
| Largest outer diameter in sl0249-series | 540 mm |
| Width range across sl0249-series | 25–140 mm |
| Bore position in sl0249-series (smallest first) | 4 of 25 |
| Bore above smallest sl0249-series size | 30 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| SL024918 | 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 SL024918 model number is decoded
envelope 90×125×35 mm with a 17.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 153 kN and C0 290 kN; with a C/C0 ratio of 0.53 the 35 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 39.5 kN, the limiting speed 3,050 r/min and the thermal reference speed 1,870 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 1.70 kN per millimetre of the 90 mm bore and 4.37 kN per millimetre of the 35 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 1.3 kg (1300 g) (0.30 g per mm² of the 125×35 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 90 mm bore belongs to the large band, where HR1 full-complement and track-roller designs deliver their highest kilonewton ratings in slow, heavily loaded machinery Two full roller rows give C 153 kN and C0 290 kN in a 125 mm outside diameter — the classic floating position opposite an SL0149 locating bearing Typical applications include rolling-mill and steel-industry drives, hydraulic pumps and radial piston pumps and material handling conveyor pulleys, where the 125 mm outside diameter and 153 kN dynamic rating match the duty. In rolling-mill and steel-industry drives the unit fits a compact 90 mm seat, and in hydraulic pumps and radial piston pumps the 1.3 kg mass is part of the rotor inertia calculation. Designers also specify it for material handling conveyor pulleys, relying on the 35 mm width and the published 290 kN static rating. Press-fit the correct ring: the rotating ring needs interference while the floating ring must slide on its seat to perform the non-locating function. 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.
Typical equipment & failure modes
Common applications
- crane travelling-wheel mechanisms
- material handling conveyor pulleys
- heavy industrial gearbox shafts
- vibrating and oscillating machinery
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
- Press-fit the correct ring: the rotating ring needs interference while the floating ring must slide on its seat to perform the non-locating function.
- 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.
- C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
Frequently asked questions
What are the dimensions of the SL024918?
The SL024918 is a SL0249 double-row full-complement non-locating cylindrical roller bearing with 125 mm outside diameter, 90 mm bore and 35 mm width, envelope 90×125×35 mm. Mass is 1.3 kg.
What does the SL024918 designation mean in the FAG/INA HR1 catalogue?
SL024918 identifies this SL0249 double-row full-complement non-locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue. The envelope is 90×125×35 mm and the catalogue ratings are C 153 kN, C0 290 kN, Cur 39.5 kN.
What is the load capacity of the SL024918?
The basic dynamic load rating C is 153 kN and the basic static load rating C0 is 290 kN; the fatigue load limit Cur is 39.5 kN.
What is the maximum speed of the SL024918?
The limiting speed is 3,050 r/min and the thermal reference speed is 1,870 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 SL024918?
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.