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:
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.
Electric Motor Bearings: Low-noise designs for high-speed spindles.
Steel Rolling Mills: Extra-heavy-duty rings for 4-row cylindrical roller bearings.
Jet Engine Shafts: Ceramic hybrid rings for high-temperature turbine applications.
Helicopter Rotor Systems: Corrosion-resistant stainless variants for marine operations.
Wind Turbine Gearboxes: Large-diameter rings (500+ mm) for multi-MW generators.
Hydroelectric Generators: Water-resistant coatings for humid environments.
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
Designation | Bore diameter | Outside diameter | Width | Mass |
---|---|---|---|---|
20.0 mm |
25.0 mm |
16.0 mm |
0.0255 kg |
|
65.0 mm |
73.0 mm |
25.0 mm |
0.164 kg |
|
35.0 mm |
42.0 mm |
36.0 mm |
0.117 kg |
|
38.0 mm |
43.0 mm |
30.0 mm |
0.074 kg |
|
40.0 mm |
45.0 mm |
30.0 mm |
0.077 kg |
|
50.0 mm |
55.0 mm |
25.0 mm |
0.078 kg |
|
50.0 mm |
55.0 mm |
35.0 mm |
0.112 kg |
|
50.0 mm |
58.0 mm |
40.0 mm |
0.209 kg |
|
60.0 mm |
68.0 mm |
25.0 mm |
0.152 kg |
|
6.0 mm |
10.0 mm |
10.0 mm |
0.004 kg |
|
7.0 mm |
10.0 mm |
10.5 mm |
0.003 kg |
|
7.0 mm |
10.0 mm |
16.0 mm |
0.005 kg |
|
28.0 mm |
32.0 mm |
30.0 mm |
0.044 kg |
|
8.0 mm |
12.0 mm |
10.0 mm |
0.0046 kg |
|
30.0 mm |
35.0 mm |
16.0 mm |
0.031 kg |
|
95.0 mm |
110.0 mm |
35.0 mm |
0.643 kg |
|
30.0 mm |
35.0 mm |
20.0 mm |
0.0396 kg |
|
25.0 mm |
30.0 mm |
16.5 mm |
0.0279 kg |
|
30.0 mm |
35.0 mm |
20.5 mm |
0.0396 kg |
|
100.0 mm |
110.0 mm |
30.0 mm |
0.381 kg |