SL185017 bearing: complete specifications & equivalents
The SL185017 is a ISO 15 radial bearing sized 85 x 130 x 60 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | FAG |
| Bore diameter d | 85 mm |
| Outer diameter D | 130 mm |
| Width B | 60 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 300 kN |
| Basic static load rating C0 | 465 kN |
| Fatigue load limit Pu | 70 kN |
| Reference speed (thermal) | 2210 rpm |
| Limiting speed (mechanical) | 3050 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2720 g |
| Manufacturer designation | SL185017 |
| 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 & sl1850-series range
| Bore d | 3.346 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 2.362 in |
| ISO bore code | 17 |
| Radial section height (D−d)/2 | 22.5 mm |
| Smallest bore in sl1850-series | 20 mm |
| Largest outer diameter in sl1850-series | 560 mm |
| Width range across sl1850-series | 30–243 mm |
| Bore position in sl1850-series (smallest first) | 14 of 35 |
| Bore above smallest sl1850-series size | 65 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| SL185017 | 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 SL185017 model number is decoded
envelope 85×130×60 mm with a 22.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 300 kN and C0 465 kN; with a C/C0 ratio of 0.65 the 60 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 70 kN, the limiting speed 3,050 r/min and the thermal reference speed 2,210 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 3.53 kN per millimetre of the 85 mm bore and 5.00 kN per millimetre of the 60 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 2.72 kg (2720 g) (0.35 g per mm² of the 130×60 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads at 85 mm bore the 130 mm outside diameter and 60 mm width target rolling stands, construction machinery and heavy gearboxes; the limiting speed drops to 3,050 r/min Full-complement kinematics cap the speed at 3,050 r/min (reference 2,210 r/min); below that limit the double-row pack offers exceptional stiffness for its section Reading SL1850: dimension series 50, double row, no cage; the bearing is supplied with annular lubrication features and is intended for oil or grease lubrication in heavy gearboxes Typical applications include crane travelling-wheel mechanisms, compact slow-speed agitator drives and heavy industrial gearbox shafts, where the 130 mm outside diameter and 300 kN dynamic rating match the duty. In crane travelling-wheel mechanisms the unit fits a compact 85 mm seat, and in compact slow-speed agitator drives the 2.72 kg mass is part of the rotor inertia calculation. Designers also specify it for heavy industrial gearbox shafts, relying on the 60 mm width and the published 465 kN static rating. 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. 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
- construction machinery slewing drives
- marine and offshore winch arrangements
- planetary gear bearing positions
- compact slow-speed agitator 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
- 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.
- 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.
- Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
Frequently asked questions
What are the dimensions of the SL185017?
The SL185017 is a SL1850 double-row full-complement semi-locating cylindrical roller bearing with 130 mm outside diameter, 85 mm bore and 60 mm width, envelope 85×130×60 mm. Mass is 2.72 kg.
What does the SL185017 designation mean in the FAG/INA HR1 catalogue?
SL185017 identifies this SL1850 double-row full-complement semi-locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue. The envelope is 85×130×60 mm and the catalogue ratings are C 300 kN, C0 465 kN, Cur 70 kN.
What is the load capacity of the SL185017?
The basic dynamic load rating C is 300 kN and the basic static load rating C0 is 465 kN; the fatigue load limit Cur is 70 kN.
What is the maximum speed of the SL185017?
The limiting speed is 3,050 r/min and the thermal reference speed is 2,210 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 SL185017?
The SL1850 is semi-locating: it carries axial load in one direction and permits the catalogue s-displacement in the other.
Reviewed & verified by the MPN Base engineering desk against source catalog HR1 2026-09-25 on 2026-09-30. Read our editorial & correction policy.