SL014976 bearing: complete specifications & equivalents
The SL014976 is a ISO 15 radial bearing sized 380 x 520 x 140 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 380 mm |
| Outer diameter D | 520 mm |
| Width B | 140 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 2250 kN |
| Basic static load rating C0 | 5500 kN |
| Fatigue load limit Pu | 590 kN |
| Reference speed (thermal) | 325 rpm |
| Limiting speed (mechanical) | 680 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 92400 g |
| Manufacturer designation | SL014976 |
| 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 & sl0149-series range
| Bore d | 14.961 in |
|---|---|
| Outer diameter D | 20.472 in |
| Width B | 5.512 in |
| ISO bore code | 76 |
| Radial section height (D−d)/2 | 70 mm |
| Smallest bore in sl0149-series | 60 mm |
| Largest outer diameter in sl0149-series | 540 mm |
| Width range across sl0149-series | 25–140 mm |
| Bore position in sl0149-series (smallest first) | 24 of 25 |
| Bore above smallest sl0149-series size | 320 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| SL014976 | 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 SL014976 model number is decoded
envelope 380×520×140 mm with a 70.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 2250 kN and C0 5500 kN; with a C/C0 ratio of 0.41 the 140 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 590 kN, the limiting speed 680 r/min and the thermal reference speed 325 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 5.92 kN per millimetre of the 380 mm bore and 16.07 kN per millimetre of the 140 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 92.4 kg (92400 g) (1.27 g per mm² of the 520×140 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads the 380 mm bore puts this execution at the top of the HR1 range — the 520 mm outside diameter, 140 mm width and 92.4 kg mass are built for primary-industry load cases The outer ring carries an annular lubrication groove and holes, so the 2250 kN dynamic rating can be maintained with relubrication without dismounting the 92.4 kg unit Typical applications include rope drums and winch drums, vibrating and oscillating machinery and marine and offshore winch arrangements, where the 520 mm outside diameter and 2250 kN dynamic rating match the duty. In rope drums and winch drums the unit fits a compact 380 mm seat, and in vibrating and oscillating machinery the 92.4 kg mass is part of the rotor inertia calculation. Designers also specify it for marine and offshore winch arrangements, relying on the 140 mm width and the published 5500 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. C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
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.
- C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.
- The bearings cannot accommodate angular misalignment; check shaft and housing parallelism before blaming the bearing for edge spalling.
Frequently asked questions
What are the dimensions of the SL014976?
The SL014976 is a SL0149 double-row full-complement locating cylindrical roller bearing with 520 mm outside diameter, 380 mm bore and 140 mm width, envelope 380×520×140 mm. Mass is 92.4 kg.
What does the SL014976 designation mean in the FAG/INA HR1 catalogue?
SL014976 identifies this SL0149 double-row full-complement locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue. The envelope is 380×520×140 mm and the catalogue ratings are C 2250 kN, C0 5500 kN, Cur 590 kN.
What is the load capacity of the SL014976?
The basic dynamic load rating C is 2250 kN and the basic static load rating C0 is 5500 kN; the fatigue load limit Cur is 590 kN.
What is the maximum speed of the SL014976?
The limiting speed is 680 r/min and the thermal reference speed is 325 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 SL014976?
The SL0149 is a locating bearing: it fixes the shaft axially in both directions; pair it with a non-locating SL0249 at the other end to avoid binding.
Reviewed & verified by the MPN Base engineering desk against source catalog HR1 2026-09-25 on 2026-09-30. Read our editorial & correction policy.