SL185060-TB bearing: complete specifications & equivalents

The SL185060-TB is a ISO 15 radial bearing sized 300 x 460 x 218 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.

Bearing dimension schematic Front view shows outer diameter D and bore d; side section shows width B. D = 460 mm d = 300 B = 218 mm side section front view
Principal dimensions: bore d 300 mm, outer diameter D 460 mm, width B 218 mm. Schematic, not to scale.

Specification table

ParameterValue
Brand FAG
Bore diameter d 300 mm
Outer diameter D 460 mm
Width B 218 mm
Material GCr15
Seal / shield open
Internal clearance CN
Tolerance class P0
Cage none
Basic dynamic load rating C 3450 kN
Basic static load rating C0 6600 kN
Fatigue load limit Pu 670 kN
Reference speed (thermal) 395 rpm
Limiting speed (mechanical) 800 rpm
Operating temperature -40 to +120 °C
Mass 124000 g
Manufacturer designation SL185060-TB
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 11.811 in
Outer diameter D 18.11 in
Width B 8.583 in
ISO bore code 60
Radial section height (D−d)/2 80 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) 31 of 35
Bore above smallest sl1850-series size 280 mm

Cross references & equivalents

Equivalent modelBrandMatch levelNote
SL185060 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 SL185060-TB model number is decoded

envelope 300×460×218 mm with a 80.0 mm radial section; every available circumferential space carries a roller because there is no cage C is 3450 kN and C0 6600 kN; with a C/C0 ratio of 0.52 the 218 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 670 kN, the limiting speed 800 r/min and the thermal reference speed 395 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 11.50 kN per millimetre of the 300 mm bore and 15.83 kN per millimetre of the 218 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 124 kg (124000 g) (1.24 g per mm² of the 460×218 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads 300 mm bore, 460 mm outside diameter: at this size the 6600 kN C0 rating and rigid full-complement pack replace multi-bearing arrangements in compact heavy-duty designs Full-complement kinematics cap the speed at 800 r/min (reference 395 r/min); below that limit the double-row pack offers exceptional stiffness for its section At 124 kg (124000 g), this is a rigid machine element used in rolling stands, crane wheels, winches and planetary stages with tight envelope constraints The -TB feature concerns the rib contact, not the envelope: the 300×460×218 mm dimensions and 124 kg mass follow the standard series plan. Typical applications include hydraulic pumps and radial piston pumps, marine and offshore winch arrangements and rolling-mill and steel-industry drives, where the 460 mm outside diameter and 3450 kN dynamic rating match the duty. In hydraulic pumps and radial piston pumps the unit fits a compact 300 mm seat, and in marine and offshore winch arrangements the 124 kg mass is part of the rotor inertia calculation. Designers also specify it for rolling-mill and steel-industry drives, relying on the 218 mm width and the published 6600 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. 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

  • planetary gear bearing positions
  • hydraulic pumps and radial piston pumps
  • compact slow-speed agitator drives
  • crane travelling-wheel mechanisms

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

  • Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
  • 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.
  • 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.

Frequently asked questions

What are the dimensions of the SL185060-TB?

The SL185060-TB is a SL1850 double-row full-complement semi-locating cylindrical roller bearing with 460 mm outside diameter, 300 mm bore and 218 mm width, envelope 300×460×218 mm. Mass is 124 kg.

What does the SL185060-TB designation mean in the FAG/INA HR1 catalogue?

SL185060-TB identifies this SL1850 double-row full-complement semi-locating cylindrical roller bearing in the Schaeffler HR1 rolling bearings catalogue. The envelope is 300×460×218 mm and the catalogue ratings are C 3450 kN, C0 6600 kN, Cur 670 kN.

What is the load capacity of the SL185060-TB?

The basic dynamic load rating C is 3450 kN and the basic static load rating C0 is 6600 kN; the fatigue load limit Cur is 670 kN.

What is the maximum speed of the SL185060-TB?

The limiting speed is 800 r/min and the thermal reference speed is 395 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 SL185060-TB?

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.