Upper support roller with mounting brackets (caps), without guide edges. External width between internal flanges or internal flange width of the roller: 105mm
Support rollers for ITR mini excavators are specially designed for the toughest applications and environments.
A full range of sizes and types is available for all popular brands and models. ITR rollers are forged products, made from selected materials such as boron steel, high-strength castings, and top-quality components.
Deep heat treatment and precision machining guarantee uniformity and consistency in production. Precise assembly, lifetime lubrication, and quality control during and after production ensure product performance and reliability.
The range of ITR track and support rollers covers from mini excavators to mining machines, from KOMATSU® PC05 (machine operating weight 1.4 tons) to HITACHI® EX2500 (machine operating weight 248 tons).
ITR undercarriage components are developed, designed, and manufactured by USCO's engineering and R&D departments, using the latest CAD systems and in collaboration with partner universities. The ITR undercarriage product line is fully managed in-house. Starting from raw material procurement, through component design, mechanical processing of components, heat treatment, through the entire assembly process to final inspection inclusive. Numerous quality controls are conducted starting from raw material procurement. The controls are based on knowledge and experience in metallurgical processes and materials engineering.
Functions of upper support rollers: They support the track between the sprocket and the idler. The roller tread durability is matched to the durability of the track chain links. Support rollers have induction-hardened shells for increased surface hardness, wear resistance, and fatigue strength while maintaining core properties. Values in the range of 50 – 58 HRC. Shafts and bearings are designed to reduce friction and wear and provide maximum strength. Lubricated for life to ensure minimal maintenance.
Bronze bushings. The design provides a large surface area for better load distribution. The soft bronze coating inside the bearing protects against any small contaminants that might damage the shaft and seals. The Duo-Cone seal consists of two metal sealing rings and two rubber ones. The rubber rings ensure the appropriate pressure on both sides of the metal sealing rings. Resistant to permanent deformation and temperature changes from -40°C to 110°C. Duo-Cone seals are designed to withstand several tread lifecycles, depending on individual conditions.
The ITR undercarriage product line offers the most complete range available on the market, covering standard applications for excavators and bulldozers along with a full range of undercarriage components for asphalt, drilling, and logging machines. The production flexibility and design experience also position the ITR undercarriage line well to supply "custom-made" products for special applications. Tractors, crawler bulldozers, mini excavators, compact track loaders, forestry machines, hydraulic excavators, felling machines, cranes, pipe layers, harvesters, asphalt pavers, mobile crushers...
