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Spannrad mit Führungen KUBOTA KX91
Idler wheels for the track. The width of the inner guide flange is 30mm, complete with a shaft.
Idler wheels ITR for mini excavators and compact loaders provide optimal track tension through the use of the latest technologies in design and manufacturing.
ITR Idler Wheel for KUBOTA KX91
Our Idler wheels are made from selected high-quality steel alloys and are properly heat-treated to ensure exceptional field performance in extreme working conditions. We assemble them using state-of-the-art seals and bearing designs that meet the most stringent industry specifications. Our Idler wheels are assembled on production lines with an automatic oil filling process, ensuring their reliability and durability.
Available in various configurations, including:
- Idler wheel shell
- Idler wheel with bushing and shaft
- Idler wheel with brackets
- Idler wheel with fork
- Idler wheel with tensioner
Our Idler wheels are designed to meet all work requirements in tough conditions, providing reliability and long life.
Quality of ITR Idler Wheels
Our range includes a wide selection of idler wheels, from mini excavators to mining machines, ensuring high quality and performance. Starting from KUBOTA® K008 (with an operating weight of 0.9 tons) to KOMATSU® D475 A5 (with an operating weight of 101 tons), we offer comprehensive solutions. Our engineering and R&D departments in Italy, South Korea, and China work together to combine know-how, technology, and development capabilities. Local engineering departments in each production plant possess specialized knowledge of the components produced, while the headquarters Italian Engineering coordinates all activities.
Functionality of ITR Idler Wheels
The function of the idler wheel is to properly tension and guide the track chain, ensuring its correct winding. The idler wheel and tensioner work together to maintain a specified degree of track tension. Effective chain tension is a key factor affecting the durability of the undercarriage. The optimal sag for conventional tracks is about 50mm (+-5mm). For example, a track in an 80-horsepower machine with a sag of 12mm will have a tension of 2540 kg when measured at the track tensioner. Meanwhile, the same machine, with the suggested sag of 50mm, will have a tension of 362 kg. An excessively tight track increases pressure, leading to greater wear on the track bushings and sprocket teeth, as well as contact of the chain with the idler wheel and rollers. Appropriate tread hardness, equal to or greater than that of the chain links and support and guide rollers, provides impact resistance and balanced durability. Material: SCMn3A, hardening 50-55 HRC. Constant lubrication ensures minimized maintenance throughout the operational life.
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