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Spannrad mit Führungen KUBOTA KX121
Idler wheels for the track. Inner flange guide width 40mm complete with shaft.
Idler wheels ITR for mini excavators and compact loaders provide optimal track tension through the use of the latest design and manufacturing technologies.
ITR Tension Wheel for KUBOTA KX121
Our Idler wheels are made from selected high-quality steel alloys and properly heat-treated to ensure exceptional field performance in extreme working conditions. They are assembled using state-of-the-art seals and bearing designs, meeting 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, which include:
- Tension wheel shell
- Tension wheel with bushing and shaft
- Tension wheel with brackets
- Tension wheel with fork
- Tension wheel with tensioner
Our Idler wheels are designed to meet all work requirements in tough conditions, ensuring reliability and long life.
Quality of ITR Tension Wheels
Our range includes a wide selection of tension wheels, from mini excavators to mining machines, ensuring high quality and performance. Starting from KUBOTA® K008 (with an operating weight of 0.9 tons) up 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 collaborate to combine know-how, technology, and development capabilities. Local engineering departments in each production facility possess specialist knowledge of the components produced, and the headquarters Italian Engineering coordinates all activities.
Functionality of ITR Tension Wheels
The function of the tension wheel is to properly tension and guide the track chain, ensuring its correct winding. The tension wheel and tensioner work together to maintain a specified degree of track tension. Efficient 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. In contrast, the same machine, with a suggested sag of 50 mm, will have a tension of 362 kg. An excessively tight track increases pressure, which translates into greater wear of the track bushings and sprocket teeth, as well as contact between the chain and the tension wheel and rollers. Appropriate tread hardness, equal to or greater than the chain links and running and support rollers, ensures impact resistance and balanced durability. Material: SCMn3A, hardening 50-55 HRC. Constant lubrication ensures minimal maintenance throughout the service life.
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