Excavator boom accessories (excavator arm parts) is the key system to ensure boom lifting, bearing and precise operation, including boom cylinder, pin shaft, shaft sleeve, ear plate, connecting rod and other core components, covering the full scene requirements of 1-80 ton excavator.Adapt to Carter 320D, Komatsu PC200-8, Sany SY215C, Volvo EC360 and other 30 + mainstream models.
Carter 349D special kit is recommended for mine heavy-duty scenarios: the boom cylinder is made of 45 # steel integrally forged cylinder, with a wall thickness of 20mm and a rated pressure of 35MPa. With HARDOX500 wear-resistant ear plate, it can withstand 200 kN impact force in granite loading, and the measured working time without leakage is over 800 hours;The chrome-plated layer on the surface of the pin shaft is 0.1mm thick, which is matched with the high-chromium cast iron shaft sleeve, and the wear resistance is 60% higher than that of the ordinary one.
Municipal engineering is suitable for the lightweight kit of Komatsu PC200-8: the boom connecting rod is made of HG785 high-strength steel, the weight is reduced by 15% but the strength remains unchanged, the clearance between the pin shaft and the shaft sleeve is controlled within 0.1mm, and the response speed of concrete crushing is increased by 12%. According to the feedback from a municipal team, after replacement, the equipment completes 5 more operation cycles per day.
The special accessories of U15 are mainly made of aluminum alloy, and the ear plate is designed by topology optimization, which can reduce the weight by 30% on the premise of ensuring the tensile strength of 260 MPa, and reduce the fuel consumption by 0. 3 L per hour when digging ditches in orchards.All accessories are processed according to the original hole accuracy, Sany SY215C installation without reaming, two teams can complete the complete set of replacement in 3 hours, a project team measured that the swing of the boom is reduced by 40%, and the operation stability is significantly improved.
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Jul
The previous cylinder leaked oil after 3 months. After replacing this set of integrally forged parts, Carter 349D carried 200 cars of granite every day. After 8 months, there was no abnormal noise in the boom and no oil leakage in the cylinder. The wear of pin shaft and shaft sleeve is very slow, and now it is only maintained once every three months, which saves half the effort than before.
The original pin shaft is worn bald, the boom is always stuck, and the broken concrete is at most 10 trucks a day. With this new chrome-plated pin, Komatsu PC200-8 moves very smoothly and lifts its arm a lot faster. Now it can break 12 cars a day, and the construction period is 5 days ahead of schedule. The supervisors all boast of its high efficiency.
In the orchard, the original iron fittings are too heavy, and the fuel consumption of Kubota U15 is 3.2L per hour. Changed this set of aluminum alloy boom accessories, looks light but strong, digging fruit tree pits is enough, now the fuel consumption is reduced to 2.8 L, 10 hours a day can save 4 liters of fuel, a year down the fuel cost less than 3000.
Last month, the boom was suddenly stuck and could not move. When it was disassembled, it was found that there was no lubrication groove in the shaft sleeve, and there were all traces of dry grinding. Changed this with spiral lubrication groove, Sany SY215C is now lifting the arm very smoothly, the master said that the grease can be stored, this month there is no problem, much stronger than the last change of ordinary shaft sleeve.
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