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Frequently Asked Questions about used excavator Excavator

A:
The Hitachi ZX70 belongs to Hitachi’s classic 6–7 ton compact crawler excavator series, with the mainstream model ZX70-5G being mass exported from Japan. All parameters below are official factory calibration data, covering power, hydraulic performance, operation range, body size and chassis configuration:
  1. Overall body basic data: Standard operating weight 6650kg, heavy counterweight optional version reaches 6950kg; standard bucket capacity 0.33 cubic meters, supporting customized narrow trenching bucket (0.28m³) and rock digging reinforced bucket (0.38m³). Overall transport dimensions: length 6080mm, width 2260mm, height 2600mm. The whole machine can directly enter a standard 20GP container without removing the dozer blade and counterweight, which saves 15%–20% of extra disassembly and packaging costs compared with other brands of the same tonnage.
  2. Power assembly parameters: Equipped with Yanmar 4TNV98-AVHBW four-cylinder water-cooled direct injection diesel engine, total displacement 3.318L, rated output power 42.4kW (56.9 horsepower) at 2100 rpm. It adopts electronic speed regulation and low-temperature start auxiliary device, which can work stably in environments of -10℃ to +45℃. The fuel tank single filling capacity is 135L, continuous medium-load operation can last more than 22 hours.
  3. Hydraulic system core data: Three independent variable plunger main pumps matched with gear pilot control pump, system main overflow pressure 31.4MPa, bucket breakout force up to 55kN, arm crowd force 43kN, swing speed 10.7rpm, walking speed low gear 2.7km/h, high gear 4.3km/h. Hitachi’s original HIOS III hydraulic control technology realizes compound action synchronous operation without jitter, and the response speed of boom, arm and bucket is 10% faster than Doosan DX75 and Komatsu PC70 of the same level.
  4. Full range of operation working data: Maximum digging radius 6320mm, maximum vertical digging depth 4170mm, maximum dumping height 5060mm, minimum turning radius at the rear only 1720mm. Narrow rear design makes it flexible to shuttle in urban narrow roads, residential courtyards and orchard passages. The standard front integrated dozer blade has a pushing width of 2260mm, which can level the site and increase the stability of the whole machine during excavation.
  5. Chassis configuration: 450mm wide rubber or steel track shoes optional, small ground contact pressure, not easy to sink on muddy farmland and soft construction sites. The walking frame is integrally cast, with 5 bottom rollers and 2 top rollers on one side, strong wear resistance and long service life.

    In terms of comprehensive advantages, compared with Korean and domestic 7-ton diggers of the same tonnage, Hitachi ZX70’s hydraulic system failure rate is reduced by nearly 25%, long-term fuel consumption is lower by 12%–18%, and the residual value of second-hand machines in the global market is significantly higher, which is favored by municipal contractors, agricultural developers and small engineering rental companies in Europe, Southeast Asia and Africa.

A:
We have sorted out long-term real measurement fuel consumption data based on thousands of Hitachi ZX70 machines sold to overseas markets, and classified consumption standards according to light, medium and heavy working conditions. Combined with the body size and digging performance characteristics of ZX70, we also sort out the high-demand application scenarios for buyers in different regions:
  1. Graded hourly fuel consumption test data:
  • Light load working condition (garden soil leveling, farmland loosening, pipeline shallow trenching): Only 3.8–4.5 liters of diesel per hour, the machine runs smoothly with low output power, suitable for long-time continuous low-intensity operation.
  • Medium load working condition (foundation pit excavation, village road reconstruction, river silt cleaning, orchard tree pit digging): Hourly fuel consumption is 5.2–6.5L, which is the most common working mode for most small engineering contractors.
  • Heavy load working condition (hard clay excavation, small rock crushing with breaker attachment, building waste demolition): Hourly fuel consumption is 7.0–8.0L, even under full load operation, the fuel economy is still better than competing models of the same tonnage.

    Taking the global average diesel price as a reference, the daily fuel cost of ZX70 working 8 hours is only 30–60 US dollars, with ultra-low operating costs and high profit space for rental users.

  1. Global mainstream applicable construction scenarios:

    First, municipal urban engineering: Urban sidewalk transformation, underground water pipe and cable trench excavation, community old house renovation and indoor demolition. The ultra-narrow rear turning structure can normally construct in road passages with a width of less than 3 meters without blocking traffic.

    Second, agricultural and forestry projects: Large orchard excavation of fruit tree pits, farmland reclamation, drainage ditch renovation, livestock farm foundation construction, mountain forest land clearing. Small ground pressure will not damage crop land and lawn, and the dozer blade can quickly level farmland.

    Third, rural small infrastructure: Village cement road foundation excavation, small reservoir silt cleaning, courtyard reconstruction, small bridge foundation construction, very popular among individual contractors in Southeast Asia, Africa and Central Asia.

    Fourth, landscaping projects: Park tree transplanting, green belt earthwork, landscape pond excavation, the small body is convenient to transport and transfer between multiple construction sites.

    Many overseas leasing companies choose to purchase multiple Hitachi ZX70 units for rental business because of its wide application range, low failure rate and stable customer demand all year round.

A:
All our inventory Hitachi ZX70 are pure original machines imported from Japan, no assembled machines, refitted machines or domestic refurbished machines. We implement a strict 36-item full-machine pre-delivery comprehensive inspection standard before each machine goes on sale, and all test data, running records and inspection reports can be provided to buyers for verification. The detailed inspection content and supporting materials are as follows:
  1. Inspection standard for three core components (the most concerned part of second-hand excavator buyers):
  • Engine: Disassemble the oil pan to check for no internal metal debris, test cylinder compression pressure, the compression value of each cylinder is controlled above 2.8MPa, no blue smoke, black smoke or white smoke during idling and full-load operation. The original engine is not replaced, the cylinder head and body have no cracks, and all seals are free of oil leakage after 2 hours of full-load continuous test run.
  • Hydraulic system: Professional pressure gauge test main pump, auxiliary pump, walking and rotary motor pressure value, all reach the factory standard range. Check main control valve, hydraulic cylinder and oil pipe joints one by one, no dripping or seepage oil. The compound action of boom, arm, bucket and rotary is smooth without delay or weakness.
  • Walking & rotary motor: Disassemble the motor end cover to check the internal gear wear degree, no gear tooth breakage or excessive wear, the whole machine walks straight without deviation, rotary brake is sensitive and does not slip when parking on a slope of 30 degrees.
  1. Body structural parts inspection data standard: The main boom, secondary arm and bucket rod are all original welding parts, no secondary cutting, welding reinforcement or crack repair. The wear thickness of the bucket ear plate and hinge pin is less than 20% of the original size, and the bucket is intact without perforation.
  2. Chassis wear assessment standard: Track chain, guide wheel, supporting wheel and carrier roller wear loss is controlled within 25% of the original thickness, the track tension is adjustable normally, no track derailment during climbing and turning. We will take detailed photos of each chassis wearing part and mark the wear data for buyers’ reference.
  3. Working hour authenticity verification: All digital hour meters are original without adjustment. We record real-time running hours through warehouse test videos, match the engine ECU background data, and provide engine operation log screenshots to avoid the risk of adjusted hours. The working hours of our inventory ZX70 are concentrated in 2000–7500 hours, more than 90% of the machines are low-hour machines below 5000 hours, with high residual value and long service life.
  4. Complete supporting inspection documents provided to buyers: Full machine printed English inspection report with all test pressure data and wear records, engine compression test record form, hydraulic system pressure test data sheet, original Japanese import customs clearance documents, multi-angle full machine operation test video, internal component disassembly inspection photos.

    We support buyers to come to the warehouse for on-site test runs; for remote overseas customers, we can shoot targeted operation videos according to the buyer’s requirements, such as full-load digging test, climbing test, continuous rotary test and leakage test. Before delivery, all machines will complete full maintenance: replace brand new engine oil, hydraulic oil, all filter elements and aging sealing rings to eliminate hidden troubles during sea transportation and initial use by customers.

A:
Our stocked Hitachi ZX70 mini excavators can meet the customs clearance requirements of almost all global regions. We configure matching qualification certificates according to the buyer’s destination country, provide accurate container loading parameter data and flexible international logistics trade terms to help customers smoothly complete customs clearance and reduce transportation costs. The detailed supporting service content is as follows:
  1. Regional matching export certification system:
  • For EU countries, Southeast Asia, Middle East and Africa: Provide complete CE certification documents including machine parameter test report, mechanical safety certification and electrical safety certification, which are recognized by local customs and engineering bidding departments.
  • For the United States, Canada and Latin American countries that implement emission standards: We prioritize supplying ZX70-5G models with EPA Tier 4 emission certification, with complete official EPA filing documents, to avoid customs detention and heavy fines caused by non-compliant emissions.

    In addition, each machine is equipped with standard export documents: commercial invoice, packing list, customs declaration form, original import source certificate, machine dimension and weight official certificate, which are all printed in English and consistent with the HS code 84295200 corresponding to crawler excavators.

  1. Accurate container loading parameter data to control logistics cost:
  • Single Hitachi ZX70: Fully assembled machine can be loaded into one standard 20GP container, overall weight about 7 tons, no disassembly of dozer blade, counterweight and bucket, only simple fixing and anti-collision protection, saving labor time and disassembly loss cost.
  • Bulk wholesale customers: Two complete Hitachi ZX70 machines can be reasonably fixed and loaded into one 40HQ container, which can reduce the unit sea freight cost by 22%–30% compared with separate 20GP shipment, very suitable for engineering machinery dealers and rental companies with large procurement volume.

    Before loading the container, we will wrap the whole machine with anti-rust plastic film, install anti-collision protective strips on the cab and boom, and use high-strength steel wire to fix the body to prevent paint peeling and component damage during long-distance sea vibration.

  1. Diversified international logistics trade terms and delivery cycle: We support EXW warehouse pick-up, FOB Shanghai / Ningbo / Qingdao port, CIF major global seaports, CFR destination port trade terms. After receiving the customer’s deposit, we will complete maintenance, inspection, certificate sorting and container loading within 3–7 working days, and provide real-time container loading photos, videos and bill of lading tracking number after shipment.

    Covered mainstream destination ports: Mombasa, Lagos, Durban, Rotterdam, Hamburg, Los Angeles, Houston, Manila, Jakarta, Bangkok, Ho Chi Minh, etc. We can also cooperate with freight forwarders designated by customers to complete door-to-door delivery services to inland cities.

  2. Customs clearance auxiliary technical support: We provide unified machine overall dimension, net weight, gross weight, engine model, emission standard and all parameter information required by local customs, sort out a complete set of customs clearance data folders for customers, and remotely guide customers to handle customs declaration procedures to avoid delays and additional expenses caused by incomplete documents.
A:

Combined with Hitachi official factory maintenance operation manual and the long-term use feedback of tens of thousands of ZX70 machines sold overseas, we sort out standardized maintenance cycle data and service life reference values, and launch exclusive all-round after-sales service policies for all customers who purchase our second-hand Hitachi ZX70:
Standard periodic maintenance cycle data and theoretical service life:
Short-cycle daily inspection items: Track tension, hydraulic pipeline seal, engine water level and fuel quantity need to be checked every 10 working hours; lubricate all hinge pins of boom and bucket every 50 hours to reduce metal wear.
Medium-cycle replacement consumables: Engine oil and engine filter element must be replaced every 250 working hours; pilot filter and fuel filter are replaced every 500 hours; walking reduction gear oil is replaced every 1000 hours, and all hydraulic oil seals are comprehensively inspected.
Long-cycle core fluid replacement: Full set of hydraulic oil, hydraulic return filter and suction filter need to be replaced every 2000 working hours; cooling system antifreeze is replaced every 8000 working hours.
Under standardized daily maintenance, the comprehensive service life of Hitachi ZX70 can reach 12000–15000 working hours; the hydraulic main pump, rotary and walking motors do not need major overhaul within 10000 hours, and the overall failure rate is far lower than Korean brand small excavators of the same tonnage. If maintenance is neglected, the overhaul cycle of the hydraulic system will be advanced to about 6000–8000 hours.
Exclusive long-term after-sales warranty policy: We provide a 12-month free warranty for the three core components (engine, main hydraulic pump, walking & rotary motor) after the machine arrives at the buyer’s destination port. During the warranty period, if the core parts fail due to original quality problems, we provide free matching replacement parts and remote engineer repair guidance for customers.
Global one-stop spare parts supply channel: We have a complete inventory of original and high-quality replacement spare parts for Hitachi ZX70, including all filter elements, hydraulic seals, hydraulic cylinders, track shoes, walking motors, engine accessories, cab glass and electrical sensors. Spare parts can be shipped by sea or air, with air transport delivery cycle of 7–15 working days and sea transport cost-effective bulk supply for dealers. We provide unified English spare parts catalog and part number query service.
24/7 remote professional engineer technical support: Our mechanical engineers provide online video fault diagnosis support all year round, can send English version of ZX70 operation manual, maintenance manual and electrical circuit diagram to customers at any time. For common faults such as slow hydraulic action, engine black smoke, track walking deviation, rotary brake failure and hydraulic oil overheating, we have sorted out complete fault troubleshooting steps and video tutorials, which can quickly guide local operators to complete repairs without waiting for offline maintenance personnel.
For large bulk purchasers and long-term cooperative machinery dealers, we can regularly update the latest second-hand Hitachi ZX70 inventory information, give long-term preferential pricing and priority spare parts delivery rights, and assist customers in local market sales promotion with machine test videos and parameter introduction materials.
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