Inner rings

SKF Inner Rings are precision-engineered core components of rolling bearings, designed to work in tandem with rolling elements (balls, rollers) and outer rings to enable smooth rotational motion under load. These critical components transfer radial and axial forces from rotating shafts to stationary housings while maintaining alignment and minimizing friction. Manufactured to exacting tolerances using advanced metallurgy, SKF inner rings ensure optimal bearing performance, longevity, and reliability across industries ranging from automotive and aerospace to heavy machinery and renewable energy systems.

Applications & Industry Use Cases

SKF Inner Rings are integral to rotating systems requiring precision and durability:

  1. Automotive Systems

Wheel Hub Units: High-precision inner rings for tapered roller bearings in passenger/EV vehicles.

Transmission Gearboxes: Carburized steel rings for high-cycle fatigue resistance.

  1. Industrial Machinery

Electric Motor Bearings: Low-noise designs for high-speed spindles.

Steel Rolling Mills: Extra-heavy-duty rings for 4-row cylindrical roller bearings.

  1. Aerospace & Defense

Jet Engine Shafts: Ceramic hybrid rings for high-temperature turbine applications.

Helicopter Rotor Systems: Corrosion-resistant stainless variants for marine operations.

  1. Renewable Energy

Wind Turbine Gearboxes: Large-diameter rings (500+ mm) for multi-MW generators.

Hydroelectric Generators: Water-resistant coatings for humid environments.

  1. Robotics & Automation

Precision Linear Guides: Miniature rings for high-accuracy motion systems.

Food Processing: FDA-compliant stainless steel rings for hygienic environments.

SKF Inner Rings represent the pinnacle of bearing component engineering, delivering unmatched precision, durability, and adaptability. From high-speed EV motors to gigawatt-scale wind turbines, these critical components ensure reliable power transmission while reducing maintenance costs and downtime. Backed by SKF’s global technical network and century-long expertise, they provide a future-proof solution for industries demanding peak performance in extreme operating conditions. Whether as standalone replacements or integrated into complete bearing assemblies, SKF Inner Rings exemplify engineering excellence and sustainable innovation

MORE +
CLOSE +
Designation Bore diameter Outside diameter Width Mass
IR 55X63X45
55.0 mm
63.0 mm
45.0 mm
0.256 kg
IR 60X68X45
60.0 mm
68.0 mm
45.0 mm
0.278 kg
IR 75X85X54
75.0 mm
85.0 mm
54.0 mm
0.52 kg
IR 25X30X38.5
25.0 mm
30.0 mm
38.5 mm
0.064 kg
IR 85X95X26
85.0 mm
95.0 mm
26.0 mm
0.278 kg
IR 28X32X20
28.0 mm
32.0 mm
20.0 mm
0.028 kg
IR 85X95X36
85.0 mm
95.0 mm
36.0 mm
0.39 kg
IR 90X100X26
90.0 mm
100.0 mm
26.0 mm
0.294 kg
IR 90X100X36
90.0 mm
100.0 mm
36.0 mm
0.406 kg
LR 35X40X12.5
35.0 mm
40.0 mm
12.5 mm
0.027 kg
IR 10X14X12 IS1
10.0 mm
14.0 mm
12.0 mm
0.007 kg
IR 10X14X16
10.0 mm
14.0 mm
16.0 mm
0.009 kg
IR 110X120X30
110.0 mm
120.0 mm
30.0 mm
0.409 kg
IR 12X15X12
12.0 mm
15.0 mm
12.0 mm
0.0058 kg
IR 12X15X12.5
12.0 mm
15.0 mm
12.5 mm
0.006 kg
IR 20X25X17
20.0 mm
25.0 mm
17.0 mm
0.022 kg
IR 20X28X20
20.0 mm
28.0 mm
20.0 mm
0.045 kg
IR 22X26X16
22.0 mm
26.0 mm
16.0 mm
0.018 kg
IR 70X80X35
70.0 mm
80.0 mm
35.0 mm
0.313 kg
IR 25X30X20
25.0 mm
30.0 mm
20.0 mm
0.034 kg