Komatsu 17M-50-22220 Bushing

The Komatsu 17M-50-22220 bushing is one of the most critical components, ensuring long-lasting and stable operation of the undercarriage and hinge assemblies of Japanese excavators by Komatsu, particularly those PC series models widely used in Russia and the CIS—the PC220, PC300, PC400, and other medium and heavy-duty models used in construction, road construction, quarrying, and municipal services. This component bears the primary dynamic loads that occur when moving the equipment over uneven terrain, turning, operating the boom and bucket, and under prolonged loads at maximum productivity. Without a reliable bushing, friction between mating metal components increases dramatically, play develops, vibration and noise increase, and serious failures occur, requiring complex and costly repairs. In Russian operating conditions, where equipment operates in temperatures ranging from -40°C to +40°C, in dusty quarries, on humid construction sites, and under constant vibration, bushing reliability becomes a key factor determining maintenance frequency, cycle times, and the overall cost-effectiveness of the machine fleet. Using low-quality or incorrectly sized bushings leads to accelerated wear of pins, levers, track rollers, and other undercarriage components, resulting in additional costs for spare parts, labor hours, and equipment downtime—critical for any construction or quarrying operation.

The Komatsu 17M-50-22220 bushing is manufactured in full compliance with Komatsu's original technical specifications and drawings, guaranteeing complete compatibility with factory components and direct replacement without any modifications. It is made from a special high-strength alloy steel, selected to withstand constant mechanical loads, friction, and impact. This material combines high tensile strength, resistance to plastic deformation, and good impact toughness, which is especially important when operating under harsh conditions. Primary machining is performed on modern CNC machines, ensuring the highest dimensional and geometric accuracy. The part then undergoes a multi-stage heat treatment, including hardening and tempering, aimed at creating an optimal metal structure. Hardening creates a durable layer with a hardness of 58–62 HRC on the bushing's working surface, ensuring minimal wear under prolonged friction. Subsequent tempering relieves internal stress, prevents cracking during sudden temperature changes, and imparts the necessary plasticity to the material, eliminating brittle fracture in critical situations.

One of the main competitive advantages of the Komatsu 17M-50-22220 bushing is its perfect geometric accuracy, fully matching the original Komatsu specifications. The inner and outer diameters, length, straightness of the cylindrical surfaces, and end face parallelism are all monitored on high-precision measuring stands at every stage of production, and dimensional tolerances do not exceed ±0.02 mm. This precision ensures that the bushing fits into its intended location without gaps, play, modifications, or additional adjustments, even in the field, where access to lathes or milling equipment is unavailable. This is especially valuable for maintenance companies that perform repairs on-site, striving to minimize equipment downtime. Quick and correct installation allows the excavator to be immediately returned to service, avoiding repeated assembly disassemblies and reducing the overall workload of service personnel.

The Komatsu 17M-50-22220 bushing was designed specifically for use in harsh Russian conditions, offering additional protective and operational benefits. Its surface is treated with a multi-layer anti-corrosion coating that reliably protects the metal from moisture, dirt, chemically aggressive environments, and salts often used for winter road treatment. This prevents rust, a common cause of premature bushing failure when used outdoors. Furthermore, the bushing material has increased resistance to cold embrittlement, maintaining its mechanical properties at temperatures down to -40°C, preventing sudden failure of the part during winter. The bushing design also includes special channels and grease pockets that ensure uniform distribution of the lubricant across the entire working surface. This reduces friction, dissipates excess heat, and protects the component from dry friction, which is the main cause of rapid wear. This increases the service life of not only the bushing itself but also all mating components.

Each Komatsu 17M-50-22220 bushing undergoes rigorous multi-stage quality control at all stages of production, from raw material acceptance to final inspection of the finished product. Non-destructive testing methods are used at the facility to detect hidden pores, cracks, and structural imperfections in the metal that are invisible to the naked eye. Dimensional accuracy, heat treatment quality, anti-corrosion coating condition, and wear resistance are all checked. Only after the part fully complies with all standards is it delivered to the warehouse and shipped to customers, which is confirmed by the manufacturer's warranty. This approach eliminates the risk of defective or faulty parts entering service, reducing the risk of unexpected breakdowns on-site.

For Russian customers, convenient and reliable packaging and well-thought-out delivery logistics are key advantages. Each bushing is individually packaged in protective, shock-resistant packaging to prevent mechanical damage, scratches, and contamination during transportation within Russia, including remote northern and Siberian regions, where large quarries and construction sites are often located. The packaging is clearly marked with the part number, the equipment model it is intended for, and its key specifications, simplifying inventory control, inventory management, and the rapid selection of the right spare part during repairs.

The Komatsu 17M-50-22220 bushing is a complete replacement for the original Komatsu part and requires no modifications to the component design during installation. Its regular use helps maintain equipment in perfect condition, reduce the frequency of unscheduled repairs, extend service intervals, and lower overall fleet operating costs. For companies operating in construction, mining, road construction, and utilities, this reliable and cost-effective solution increases productivity, reduces costs, and ensures long-term business stability.