SL192309-XL bearing: complete specifications & equivalents
The SL192309-XL is a ISO 15 radial bearing sized 45 x 100 x 36 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 45 mm |
| Outer diameter D | 100 mm |
| Width B | 36 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 181 kN |
| Basic static load rating C0 | 164 kN |
| Fatigue load limit Pu | 31 kN |
| Reference speed (thermal) | 3000 rpm |
| Limiting speed (mechanical) | 4600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1370 g |
| Manufacturer designation | SL192309-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 & sl1923-series range
| Bore d | 1.772 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 1.417 in |
| ISO bore code | 09 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in sl1923-series | 25 mm |
| Largest outer diameter in sl1923-series | 540 mm |
| Width range across sl1923-series | 24–165 mm |
| Bore position in sl1923-series (smallest first) | 5 of 29 |
| Bore above smallest sl1923-series size | 20 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| SL192309 | 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 SL192309-XL model number is decoded
envelope 45×100×36 mm with a 27.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 181 kN and C0 164 kN; with a C/C0 ratio of 1.10 the 36 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 31 kN, the limiting speed 4,600 r/min and the thermal reference speed 3,000 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 4.02 kN per millimetre of the 45 mm bore and 5.03 kN per millimetre of the 36 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 1.37 kg (1370 g) (0.38 g per mm² of the 100×36 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 45 mm bore places this bearing in the medium band, where the 100 mm envelope already carries ratings in the tens of kilonewtons SL192309-XL is the wide dimension-series 23 execution of the single-row full-complement principle: a markedly wider 36 mm ring carries more and longer rollers than the 29/30-series sizes -XL means this is an X-life bearing — Schaeffler's upgraded performance level with smoother raceways, so the 181 kN C rating and longer nominal life come without an envelope change. Typical applications include construction machinery slewing drives, material handling conveyor pulleys and planetary gear bearing positions, where the 100 mm outside diameter and 181 kN dynamic rating match the duty. In construction machinery slewing drives the unit fits a compact 45 mm seat, and in material handling conveyor pulleys the 1.37 kg mass is part of the rotor inertia calculation. Designers also specify it for planetary gear bearing positions, relying on the 36 mm width and the published 164 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. 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.
Typical equipment & failure modes
Common applications
- heavy industrial gearbox shafts
- construction machinery slewing drives
- vibrating and oscillating machinery
- rope drums and winch drums
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.
- 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.
Frequently asked questions
What are the dimensions of the SL192309-XL?
The SL192309-XL is a SL1923 single-row full-complement semi-locating cylindrical roller bearing with 100 mm outside diameter, 45 mm bore and 36 mm width, envelope 45×100×36 mm. Mass is 1.37 kg.
What does the SL192309-XL designation mean in the FAG/INA HR1 catalogue?
SL192309-XL identifies this SL1923 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 45×100×36 mm and the catalogue ratings are C 181 kN, C0 164 kN, Cur 31 kN.
What is the load capacity of the SL192309-XL?
The basic dynamic load rating C is 181 kN and the basic static load rating C0 is 164 kN; the fatigue load limit Cur is 31 kN.
What is the maximum speed of the SL192309-XL?
The limiting speed is 4,600 r/min and the thermal reference speed is 3,000 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 SL192309-XL?
This is a semi-locating bearing: it locates the shaft in one axial direction and floats in the other, and should be paired with a non-locating or locating bearing accordingly.
Reviewed & verified by the MPN Base engineering desk against source catalog HR1 2026-09-25 on 2026-09-30. Read our editorial & correction policy.