Upper support roller without mounting brackets (cap), without guide edges External width between the internal flanges or the inner flange width of the roller: 115mm
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 precise machining ensure uniformity and consistency in production. Precise assembly, lifetime lubrication, and quality control during and after production ensure the product's performance and reliability.
The range of ITR travel and support rollers covers from mini excavators to mining machines, from KOMATSU® PC05 (machine operating weight 1.4 tons) to HITACHI® EX25OO (machine operating weight 248 tons)
ITR undercarriage components are developed, designed, and constructed 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 entirely managed in-house. Starting from raw material procurement, through component design, mechanical processing, heat treatment, through the entire assembly process to final inspection. Numerous quality checks are carried out starting from raw material purchase. Controls are based on knowledge and experience in metallurgy and materials engineering.
Functions of upper support rollers: They support the track between the sprocket and the tensioning wheel. The durability of the roller tread is matched to the durability of the track chain links. Support rollers have induction-hardened shells to increase 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 minimize maintenance.
Bronzed sliding bearing. The design provides a large surface area for better load distribution. The soft bronze coating in the bearing protects against any fine contaminants that can damage the shaft and seals. The Duo-Cone seal consists of two metal sealing rings and two rubber ones. The rubber rings provide 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 life cycles, depending on individual conditions.
The ITR undercarriage product line offers the most complete range available on the market, which includes standard applications for excavators and bulldozers, along with a full range of undercarriage components for asphalt, drilling, and logging machines. Production flexibility and design experience also position the ITR undercarriage line well to deliver "custom-made" products for special applications. Tractors, crawler bulldozers, mini excavators, compact track loaders, forestry machines, hydraulic excavators, logging machines, cranes, pipe layers, harvesters, asphalt pavers, mobile crushers...
