The THK Roller Follower Model NURT NURT R SERIES represents a significant advancement in linear motion technology, engineered for applications demanding high rigidity, precision, and durability under challenging operational conditions. This series features a robust outer ring and a precisely ground stud, both manufactured from high-carbon chromium bearing steel (SUJ2), which is through-hardened to ensure exceptional wear resistance and longevity. The incorporation of a full complement of needle rollers, securely retained by a specially designed polyamide resin cage, maximizes the load-carrying capacity while minimizing friction and operational noise. A key technical feature is the inclusion of seals on both sides, which effectively prevent the ingress of contaminants such as dust, debris, and moisture, while retaining lubrication to extend service intervals and enhance reliability in harsh environments. The stud is manufactured to exacting tolerances with a fine finish, facilitating smooth rotation and precise alignment when mounted in machinery.
Performance advantages of the NURT R SERIES are evident in its ability to handle heavy radial loads and moderate axial loads with minimal deflection, making it ideal for applications where space constraints and high load requirements coexist. The optimized internal geometry and high-quality materials contribute to a low coefficient of friction, reducing heat generation and energy consumption during operation. This results in improved efficiency and reduced maintenance needs, even in high-cycle or continuous-duty scenarios. The sealed design ensures consistent performance in contaminated or washdown environments, such as those found in food processing or automotive manufacturing, where exposure to coolants, lubricants, or particulate matter is common. Additionally, the series is available in various configurations, including standard and sealed options, with stud diameters and lengths tailored to specific application demands, allowing for seamless integration into existing systems.
Typical applications for the THK NURT R SERIES span a broad spectrum of industrial sectors, underscoring its versatility and reliability. In industrial machinery, it is commonly employed in cam followers, guide mechanisms for conveyor systems, and support rollers in heavy-duty material handling equipment, where it ensures precise tracking and reduces wear on mating surfaces. Within automotive systems, the series finds use in assembly line jigs, welding robots, and suspension testing rigs, providing robust support and smooth motion under dynamic loads. In precision equipment, such as semiconductor manufacturing devices, packaging machinery, and printing presses, the NURT R SERIES delivers the accuracy and repeatability required for high-speed, high-precision operations. Its ability to maintain performance in demanding conditions makes it a preferred choice for engineers seeking to enhance the reliability and longevity of their linear motion systems, ultimately contributing to increased productivity and reduced total cost of ownership.
| Model No. | Main dimensions | Basic load rating | |||||
| Inner diameter di |
Inscribed bore diameter dr |
Outer diameter D |
B |
C |
Dynamic rating C |
Static rating C0 |
|
| mm | mm | mm | mm | mm | kN | kN | |
50 |
— |
110 |
32 |
30 |
96.3 |
149 |
|
50 |
— |
90 |
32 |
30 |
96.3 |
149 |
|
45 |
— |
100 |
32 |
30 |
91.7 |
137 |
|
45 |
— |
85 |
32 |
30 |
91.7 |
137 |
|
30 |
— |
72 |
29 |
28 |
57.5 |
74.3 |
|
40 |
— |
90 |
32 |
30 |
86.9 |
124 |
|
40 |
— |
80 |
32 |
30 |
86.9 |
124 |
|
35 |
— |
80 |
29 |
28 |
63.3 |
87.5 |
|
35 |
— |
72 |
29 |
28 |
63.3 |
87.5 |
|
15 |
— |
35 |
19 |
18 |
23.4 |
27.2 |
|
30 |
— |
62 |
29 |
28 |
57.5 |
74.3 |
|
25 |
— |
62 |
25 |
24 |
43 |
58.1 |
|
25 |
— |
52 |
25 |
24 |
43 |
58.1 |
|
20 |
— |
52 |
25 |
24 |
38.9 |
48.9 |
|
20 |
— |
47 |
25 |
24 |
38.9 |
48.9 |
|
17 |
— |
47 |
21 |
20 |
25.2 |
30.9 |
|
17 |
— |
40 |
21 |
20 |
25.2 |
30.9 |
|
15 |
— |
42 |
19 |
18 |
23.4 |
27.2 |
|