Upper support roller without mounting brackets (caps), with external guide edges Outer width between inner flanges or inner flange width of the roller: 78mm
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 of production. Accurate assembly, lifetime lubrication, and quality control during and after production ensure product performance and reliability.
The range of ITR carriage and support rollers includes everything 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 engineered by USCO engineering and R&D departments, using the latest CAD systems and in collaboration with partner universities. The ITR undercarriage product line is entirely self-managed. From raw material procurement, through component design, mechanical processing, heat treatment, through the entire assembly process to final inspection. Numerous quality controls are conducted starting from raw material purchase. The inspections 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 tension wheel. The durability of the roller tread is matched to the durability of the track chain links. Support rollers have shells that are induction hardened to increase surface hardness, wear resistance, and fatigue strength while maintaining core properties. Values range from 50 – 58 HRC. Shafts and bearings are designed to reduce friction and wear and ensure maximum strength. Lubricated for lifetime to ensure minimal maintenance.
Bronze sliding bearing. The design provides a large surface area for better load distribution. The soft bronze coating in the bearing protects against any small contaminants that could damage the shaft and seals. The Duo-Cone seal consists of two metal sealing rings and two rubber ones. The rubber rings provide 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 lifetimes, 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. 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...
