- Nicht auf Lager
Spannrad HITACHI ZX8 U
Idler wheels for the track. Inner flange width 23mm complete with shaft.
Idler wheels ITR for mini excavators and compact loaders provide optimal track tension thanks to the use of the latest technologies in design and manufacturing.
ITR Tension Wheel for HITACHI ZX8 U
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. 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.
They are 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 the demands of tough working 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 machinery, 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 research and development departments in Italy, South Korea, and China collaborate to combine know-how, technology, and development potential. Local engineering departments in each manufacturing plant possess specialized knowledge about 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 proper winding. The tension wheel and tensioner work together to maintain a specified level of track tension. Proper chain tension is a key factor influencing undercarriage durability. Optimal sag for conventional tracks is about 50mm (+-5mm). For example, a track in an 80-horsepower machine with a 12mm sag will have a tension of 2540 kg when measured at the track tensioner. Conversely, the same machine with the suggested sag of 50 mm will have a tension value of 362 kg. An overly tensioned track increases pressure, which translates to greater wear of the track bushings and drive wheel teeth, as well as contact of the chain with the tension wheel and rollers. Appropriate tread hardness, equal to or greater than that of 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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