Idler
- Professional idler design and manufacturing
- Competitive prices
- Support extremely cold and hot working conditions
- Over 360 models of idlers are available for all brands
- Supports excavator idlers with rail surface diameters ranging from 380 to 815mm
- Supports bulldozer idlers with diameters ranging from 500 to 950mm
Characteristics of Idler
The idlerl adopts the technology of integral casting or forging of the wheel body, which has good fatigue resistance. At the same time, high-strength sliding bushing bronzes and sealing technology are adopted to improve the reliability of the product in dealing with extreme high or cold working conditions.

Terris Idler Craftsmanship
Idler body: Adopting integral casting or welding structure, with surface quenching treatment after quenching and tempering, it has sufficient strength, stiffness, and surface wear resistance;
Shaft: Made of high-quality alloy steel, surface quenched and tempered, and polished after grinding the sliding working surface to achieve effective surface roughness and control temperature rise during operation;
Shaft bushing: The wheel system product of large tonnage excavators uses high-strength brass shaft sleeves to enhance the load-bearing capacity of the wheels;
Shaft seat: made of high-strength ductile iron or cast steel material, formed by precision casting, and ground after precision machining of the thrust surface to obtain good surface roughness, reduce working temperature and wear;
Floating oil seal: Designed with high wear resistant floating seal ring material, the grinding working surface is finely ground and polished. After hardness and strength testing, the floating seal rubber ring is subjected to high-temperature aging and compression deformation tests to ensure that all technical indicators of the rubber ring meet the adaptability requirements of working conditions;
Oil product: Select oil products according to the actual working conditions of the host to meet various complex working conditions such as extreme cold and high temperature.
Supply Range
Undercarriage parts for excavators with a pitch ranging from 90mm to 317mm and bulldozers with a pitch ranging from 135mm to 317mm




- KOMATSU Idler
- CATERPILLAR Idler
- HITACHI Idler
- VOLVO Idler
- LIEBHERR Idler
- KOBELCO Idler
- DOOSAN Idler
- LiuGong Idler
- SDLG Idler
- SANY Idler
- XCMG Idler
- HYUNDAI Idle
- SUMITOMO Idler
Why choose Terris?

It is the first in China to create a multi-body dynamics model for crawler chassis, integrating DOE simulation/rigid-flexible coupling/meta-analysis technology, and providing full working condition analysis. Master the core design of the floating oil seal for the track roller, build a simulation test platform, and the product verification capability is internationally leading.

Possessing hot-die forging + simulation technology to produce high-precision forgings; Special alloy steel + intelligent heat treatment to enhance performance; Online monitoring + tool compensation ensures precise machining; Fully automatic assembly + real-time monitoring to ensure quality, adaptable to multiple working conditions.

Establish physical and chemical/mechanical/reliability laboratories, equipped with spectrometers and other devices; Our professional quality inspection team conducts a full inspection of the raw material composition/structure and the microscopic/mechanical properties after the manufacturing process, providing double guarantees for quality compliance.

We focus on global high-end OEM mainframe support and are committed to providing complete solutions for the aftermarket of large-tonnage mining equipment. This includes brands such as LIEBHERR, HITACHI, and HYUNDAI.

Digitize and develop high-end process equipment to build a safe, efficient and intelligent cluster. Flexible lines cover the entire process of hot-die forging, heat treatment, welding, etc., integrate intelligent equipment, and build a stable and traceable intelligent manufacturing system.

Supports all working conditions, all weather conditions, OEM, large tonnage, full set customization. The development cycle from product design, testing to verification is 45-60 days.
Production Process
Terris utilizes digital technology to develop high-end intelligent equipment, establish a safe and efficient flexible manufacturing system, integrate fully automatic production lines to cover core processes such as hot-die forging, and achieve intelligent processing.

Innovative Application Integration
Integrating multi-body dynamics modeling, full-condition simulation and stress analysis technologies, it was the first in China to achieve parametric design and reliability optimization of track chassis. Relying on the innovative technology of floating oil seals and the high-precision test system, a closed-loop capability of “design – simulation – verification” has been constructed, and the efficiency and accuracy of gear train tests rank among the top in the world.
Core Advantages
Mastering key technologies such as intelligent hot-die forging forming and special alloy steel strengthening processes, the forging accuracy and material properties are among the top in the industry. Through online compensation processing technology and fully automatic assembly perception systems, a closed-loop of “high-precision manufacturing – zero-defect assembly” for components is achieved, supporting the product’s adaptability to working conditions with high strength and high wear resistance.


Professional Team + Equipment
With inspection technology engineers at the core, advanced equipment such as spectrometers and end quenching testing machines are configured to form a testing capability covering “raw materials – hot processing – finished products”, completing full-item screening including chemical composition, grain size, and hair texture, and simultaneously monitoring the strength and microstructure properties of products after forging/heat treatment, thus strengthening the quality defense line.