Part Number: ya60026150
PTC Number: PTE026150
Genuine aftermarket Hitachi Blank Computer Controller Board (Part No: ya60026150). OEM-specification replacement compatible with Hitachi Loader Zw220 5B. Stocked in Mumbai for same-day dispatch across India. WhatsApp +91-98210-37990 for pricing.
Undercarriage — the highest wear cost on any tracked machine: Track chains, links, shoes, rollers (top and bottom), idlers, and sprockets represent 30–50% of a tracked excavator's total maintenance cost over its life. The undercarriage carries the full machine weight and drives traction — wear is inevitable, but the rate depends heavily on operating surface and maintenance practices.
Surface-specific wear rates: Rocky quarry conditions wear undercarriage 3–4× faster than soft ground. Sharp rock (granite, basalt) cuts through track shoe rubber and gouges link rails. For quarry operation, triple-grouser or rock shoes are recommended over standard single-grouser. Abrasive sandy soil accelerates roller seal failure.
When to replace: Replace track links when rail wear exceeds 10% of original height. Replace rollers when visible seal weeping starts — leaked oil leads to rapid metal-on-metal wear and seized rollers within weeks. Check sprocket wear at every 1,000-hour service. Worn sprockets accelerate link pitch wear 2–3×.
Extending service life: Proper track tension is critical — overtight tracks increase bushing and pin wear; slack tracks allow derailments and accelerate sprocket wear. Check tension every 100 hours. Grease track pins regularly where grease fittings are provided. Avoid spinning tracks on hard rock — this gouges shoe surfaces and generates heat that anneals the steel.
| Brand | Hitachi |
| Category | Blank Computer Controller Board |
| Application | Hitachi Loader Zw220 5B |
This part (ya60026150) is compatible with: Hitachi Loader Zw220 5B. Measure track link rail height, pin and bushing diameter wear, and roller flange condition against OEM wear limits in the service manual. As a rule of thumb: replace track links when rail wear reaches 10% of original height, replace bushings when internal diameter exceeds OEM limit by 10%, and replace rollers when seals show weeping or flanges are visibly reduced.
Rocky surfaces (granite, basalt quarries) wear undercarriage 3–4× faster than soft ground. Abrasive sand causes rapid bushing wear. Muddy conditions accelerate seal failure. Concrete and asphalt cause rapid shoe pad wear. Matching shoe type to operating conditions and using the correct track width significantly affects total wear cost.
Correct track sag (measured between the top carrier roller and the track) is typically 10–30 mm depending on operating conditions — looser in mud, tighter on hard ground. Check tension every 100 hours and after any ground condition change. Overtight tracks wear bushings and pins rapidly; slack tracks risk derailment.
PTC supplies both — individual components (single roller, track link segment, sprocket) and complete undercarriage sets. For machines with high-hour undercarriage showing uniform wear, a complete set replacement is more cost-effective than replacing worn-out individual components as they fail. Request a quote for your specific machine model.
Track chains, rollers, and sprockets are stocked for major Komatsu, CAT, Volvo, and Hitachi models. Standard delivery from Mumbai is 3–7 days across India. Complete undercarriage sets may require 7–14 days for logistics coordination. Contact us for urgent requirements.
Pan-India Delivery
Dispatched within 1–2 business days from Mumbai. Delivery to your city in 3–5 days.
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