Support rollers (Yoke-type track rollers)

SKF Support rollers (Yoke-type track rollers) are rolling bearings designed for various tracks and are suitable for application scenarios such as cam drives and conveyor systems. They are based on needle roller bearings (fig. 1) or cylindrical roller bearings (fig. 2) and are available in a variety of designs and variants, including with or without cages, with or without flange rings, with or without inner rings, with or without seals, etc. Design and functional features The main features of SKF Support rollers include: High load capacity: These roller bearings are compact and can withstand high radial loads and can absorb axial loads caused by alignment errors or misalignment Wide applicability: Suitable for various types of tracks, including thick-walled outer ring design, capable of withstanding high radial loads Easy installation: Pre-assembled accessories are provided and can be installed directly without further adjustment Application scenarios SKF Support rollers are widely used in various industrial applications, including but not limited to: Conveyor systems: Provide stable support and drive in conveyor systems. Cam drives: Provide precise transmission and support in cam drive systems.

SKF Yoke-Type Track Rollers are heavy-duty, precision-engineered components designed to guide and support loads along linear or curved tracks in demanding industrial applications. These rollers combine robust construction with advanced bearing technology to ensure smooth motion, high load capacity, and extended service life in environments subjected to shock, vibration, and contamination. Widely used in construction, material handling, and automated machinery, SKF Yoke-Type Track Rollers are optimized for applications such as crane runways, conveyor systems, excavator tracks, and robotic guidance systems. Their yoke design integrates a stud or shaft for secure mounting, making them indispensable for maintaining alignment and reducing wear in track-based systems.

Applications & Industry Use Cases

SKF Yoke-Type Track Rollers excel in industries requiring reliable linear motion under extreme conditions:

  1. Construction & Mining

Excavator Undercarriages: Guide tracks in bulldozers and crawler cranes.

Tunnel Boring Machines: Support heavy loads in confined, high-vibration environments.

  1. Material Handling

Overhead Cranes: Rollers for runway beams in warehouse logistics.

Automated Guided Vehicles (AGVs): Precision guidance in factory automation.

  1. Agriculture & Forestry

Harvester Track Systems: Durable performance in muddy, abrasive conditions.

Logging Equipment: Support rollers for grapple carriages and sawmill conveyors.

  1. Steel & Metal Processing

Rolling Mill Entry/Exit Tables: Withstand high temperatures and scale debris.

Furnace Chargers: Track rollers for ladle transfer cars.

  1. Renewable Energy

Solar Tracker Systems: Corrosion-resistant rollers for outdoor solar farms.

Wind Turbine Assembly Lines: Heavy-duty rollers for nacelle positioning.

SKF Yoke-Type Track Rollers are the ultimate solution for reliable linear motion in the most demanding industrial environments. Their robust design, precision engineering, and adaptability make them indispensable for applications ranging from construction machinery to automated logistics systems. By integrating SKF’s advanced materials, sealing technologies, and lubrication solutions, these rollers deliver unmatched durability, reduced downtime, and lower total cost of ownership. Backed by SKF’s global technical support and commitment to innovation, yoke-type track rollers empower industries to achieve peak performance while navigating the challenges of heavy loads, contamination, and harsh operating conditions.

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Designation Functional outside diameter Bore diameter Width, total Basic dynamic load rating Limiting speed Mass
STO 25 X
52.0 mm
25.0 mm
16.0 mm
16.5 kN
3400.0 r/min
0.177 kg
STO 10 X
30.0 mm
10.0 mm
12.0 mm
8.25 kN
6000.0 r/min
0.049 kg
STO 30
62.0 mm
30.0 mm
20.0 mm
22.9 kN
2600.0 r/min
0.308 kg
STO 30 X
62.0 mm
30.0 mm
20.0 mm
22.9 kN
2600.0 r/min
0.322 kg
STO 6 XTN
19.0 mm
6.0 mm
10.0 mm
3.74 kN
7000.0 r/min
0.017 kg
STO 35 X
72.0 mm
35.0 mm
20.0 mm
24.6 kN
2200.0 r/min
0.441 kg
STO 8 XTN
24.0 mm
8.0 mm
10.0 mm
4.13 kN
7000.0 r/min
0.026 kg
NA 2204.2RSX
47.0 mm
20.0 mm
18.0 mm
16.1 kN
4000.0 r/min
0.177 kg
NA 2205.2RSX
52.0 mm
25.0 mm
18.0 mm
16.8 kN
3400.0 r/min
0.209 kg
NA 2206.2RS
62.0 mm
30.0 mm
20.0 mm
17.9 kN
2800.0 r/min
0.324 kg
NA 2206.2RSX
62.0 mm
30.0 mm
20.0 mm
17.9 kN
2800.0 r/min
0.324 kg
NATR 12 X
32.0 mm
12.0 mm
15.0 mm
7.04 kN
4300.0 r/min
0.071 kg
NATR 35 PPX
72.0 mm
35.0 mm
29.0 mm
25.5 kN
1700.0 r/min
0.603 kg
NATV 40 PPX
80.0 mm
40.0 mm
32.0 mm
40.2 kN
950.0 r/min
0.89 kg
NNTR 130X310X146.2ZL
310.0 mm
130.0 mm
146.0 mm
952.0 kN
300.0 r/min
65.2 kg
RNA 2201.2RS
32.0 mm
16.0 mm
13.8 mm
7.04 kN
6000.0 r/min
0.057 kg
RNA 2206.2RS
62.0 mm
35.0 mm
19.8 mm
17.9 kN
2800.0 r/min
0.284 kg
RSTO 15
35.0 mm
20.0 mm
11.8 mm
9.13 kN
5000.0 r/min
0.05 kg
STO 12
32.0 mm
12.0 mm
12.0 mm
8.8 kN
5600.0 r/min
0.057 kg
STO 10
30.0 mm
10.0 mm
12.0 mm
8.25 kN
6000.0 r/min
0.049 kg