SL182920-XL bearing: complete specifications & equivalents
The SL182920-XL is a ISO 15 radial bearing sized 100 x 140 x 24 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 100 mm |
| Outer diameter D | 140 mm |
| Width B | 24 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 152 kN |
| Basic static load rating C0 | 203 kN |
| Fatigue load limit Pu | 32.5 kN |
| Reference speed (thermal) | 1870 rpm |
| Limiting speed (mechanical) | 2750 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1140 g |
| Manufacturer designation | SL182920-XL |
| 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 & sl1829-series range
| Bore d | 3.937 in |
|---|---|
| Outer diameter D | 5.512 in |
| Width B | 0.945 in |
| ISO bore code | 20 |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in sl1829-series | 60 mm |
| Largest outer diameter in sl1829-series | 670 mm |
| Width range across sl1829-series | 16–100 mm |
| Bore position in sl1829-series (smallest first) | 9 of 34 |
| Bore above smallest sl1829-series size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| SL182920 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 SL182920-XL model number is decoded
envelope 100×140×24 mm with a 20.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 152 kN and C0 203 kN; with a C/C0 ratio of 0.75 the 24 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 32.5 kN, the limiting speed 2,750 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 1.52 kN per millimetre of the 100 mm bore and 6.33 kN per millimetre of the 24 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 1.14 kg (1140 g) (0.34 g per mm² of the 140×24 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 100 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 SL18 bearings are separable for mounting: the inner ring with the self-retained roller set can be fitted separately from the plain-bored outer ring, which simplifies interference-fit assembly SL182920-XL is a single-row full-complement cylindrical roller bearing: no cage is fitted, so the maximum number of rollers runs between the rings, and the rollers guide themselves on the two inner-ring ribs The -XL suffix marks the X-life execution: refined raceway topography and upgraded materials lift the basic ratings versus the non-X-life bearing at the same 100×140×24 mm envelope. Typical applications include heavy industrial gearbox shafts, crane travelling-wheel mechanisms and vibrating and oscillating machinery, where the 140 mm outside diameter and 152 kN dynamic rating match the duty. In heavy industrial gearbox shafts the unit fits a compact 100 mm seat, and in crane travelling-wheel mechanisms the 1.14 kg mass is part of the rotor inertia calculation. Designers also specify it for vibrating and oscillating machinery, relying on the 24 mm width and the published 203 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. 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.
Typical equipment & failure modes
Common applications
- rolling-mill and steel-industry drives
- vibrating and oscillating machinery
- material handling conveyor pulleys
- construction machinery slewing 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
- 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.
- 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.
- 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 SL182920-XL?
The SL182920-XL is a SL1829 single-row full-complement semi-locating cylindrical roller bearing with 140 mm outside diameter, 100 mm bore and 24 mm width, envelope 100×140×24 mm. Mass is 1.14 kg.
What does the SL182920-XL designation mean in the FAG/INA HR1 catalogue?
SL182920-XL identifies this SL1829 single-row full-complement semi-locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue; the -XL suffix marks the X-life execution. The envelope is 100×140×24 mm and the catalogue ratings are C 152 kN, C0 203 kN, Cur 32.5 kN.
What is the load capacity of the SL182920-XL?
The basic dynamic load rating C is 152 kN and the basic static load rating C0 is 203 kN; the fatigue load limit Cur is 32.5 kN.
What is the maximum speed of the SL182920-XL?
The limiting speed is 2,750 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 SL182920-XL?
This is a semi-locating bearing: one rib on the outer ring and two on the inner ring guide the shaft axially in one direction, while the other direction is free for thermal expansion.
Reviewed & verified by the MPN Base engineering desk against source catalog HR1 2026-09-25 on 2026-09-30. Read our editorial & correction policy.