SL014956 bearing: complete specifications & equivalents
The SL014956 is a ISO 15 radial bearing sized 280 x 380 x 100 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 280 mm |
| Outer diameter D | 380 mm |
| Width B | 100 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 1150 kN |
| Basic static load rating C0 | 2650 kN |
| Fatigue load limit Pu | 300 kN |
| Reference speed (thermal) | 520 rpm |
| Limiting speed (mechanical) | 940 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 34000 g |
| Manufacturer designation | SL014956 |
| 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 | 11.024 in |
|---|---|
| Outer diameter D | 14.961 in |
| Width B | 3.937 in |
| ISO bore code | 56 |
| Radial section height (D−d)/2 | 50 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) | 19 of 25 |
| Bore above smallest sl0149-series size | 220 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| SL014956 | 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 SL014956 model number is decoded
envelope 280×380×100 mm with a 50.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 1150 kN and C0 2650 kN; with a C/C0 ratio of 0.43 the 100 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 300 kN, the limiting speed 940 r/min and the thermal reference speed 520 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 4.11 kN per millimetre of the 280 mm bore and 11.50 kN per millimetre of the 100 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 34 kg (34000 g) (0.89 g per mm² of the 380×100 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 280 mm bore, 380 mm outside diameter: at this size the 2650 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs Inside the 280×380×100 mm envelope the two cageless rows provide C0 2650 kN, the capacity this series is selected for in heavy gearbox and drum positions SL0149 is the double-row full-complement locating bearing: it supports the radial load and axial loads in both directions, fixing the shaft axially at that position Typical applications include hydraulic pumps and radial piston pumps, marine and offshore winch arrangements and rolling-mill and steel-industry drives, where the 380 mm outside diameter and 1150 kN dynamic rating match the duty. In hydraulic pumps and radial piston pumps the unit fits a compact 280 mm seat, and in marine and offshore winch arrangements the 34 kg mass is part of the rotor inertia calculation. Designers also specify it for rolling-mill and steel-industry drives, relying on the 100 mm width and the published 2650 kN static rating. 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. 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
- 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
- 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.
- 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 SL014956?
The SL014956 is a SL0149 double-row full-complement locating cylindrical roller bearing with 380 mm outside diameter, 280 mm bore and 100 mm width, envelope 280×380×100 mm. Mass is 34 kg.
What does the SL014956 designation mean in the FAG/INA HR1 catalogue?
SL014956 identifies this SL0149 double-row full-complement locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue. The envelope is 280×380×100 mm and the catalogue ratings are C 1150 kN, C0 2650 kN, Cur 300 kN.
What is the load capacity of the SL014956?
The basic dynamic load rating C is 1150 kN and the basic static load rating C0 is 2650 kN; the fatigue load limit Cur is 300 kN.
What is the maximum speed of the SL014956?
The limiting speed is 940 r/min and the thermal reference speed is 520 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 SL014956?
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.