The new ZX70 has evolved with a number of improvements including engine torque, durability and maintainability to earn more production and profits. It is rugged and sturdy for operation under tough environment, reducing downtime. Maintenance is also simplified to increase uptime. The new ZX70 empowers your visions and dreams, shaping your future.
Key Benefits for Low Running Costs: High Quality, Low Fuel Consumption, High Durability.
|Arm 1.62 m||Arm 2.12 m|
|A Distance between tumblers||mm||2 140|
|B Undercarriage length||mm||2 765|
|C Counterweight clearance (*)||mm||760|
|D Rear-end swing radius||mm||1 750|
|D’ Rear-end length||mm||1 750|
|E Overall width of upperstructure||mm||2 260|
|F Overall height of cab||mm||2 600|
|G Min. ground clearance||mm||360|
|H Track gauge||mm||1 750|
|I Track shoe width||mm||G 450|
|J Undercarriage width||mm||2 200|
|K Overall width||mm||2 260|
|L Track height with triple grouser shoes (*)||mm||655|
|M Overall length||mm||6 080||6 120|
|N Overall height of boom||mm||2 550||2 880|
|* Excluding track shoe lug - G: Triple grouser shoe|
|Arm length||m||1.62 m||2.12 m|
|A Max. digging reach||mm||6 320||6 810|
|A’ Max. digging reach (on ground)||mm||6 170||6 670|
|*B Max. digging depth||mm||4 170||4 670|
|*B’ Max. digging depth for 2.5 m level||mm||3 800||4 370|
|*C Max. cutting height||mm||7 150||7 550|
|*D Max. dumping height||mm||5 060||5 450|
|*D’ Min. dumping height||mm||2 340||1 920|
|E Min. swing radius||mm||1 720||2 080|
|F Max. vertical wall digging depth||mm||3 730||4 280|
|*Excluding track shoe lug|
|A Overall width of blade||mm||2 320|
|B Overall height of blade||mm||435|
|C Blade distance||mm||1 910|
|*D Max. rasing height above ground||mm||400|
|*E Max. lowering depth from ground||mm||280|
|*Excluding track shoe lug|
|Model||Yanmar 4TNV98-AVHBW (CHN Stage )|
|Type||4-cycle water-cooled, direct injection|
|No. of cylinders||4|
|ISO 9249, net||kW||42.4 kW (56.9 HP) at 2 100 min-1 (rpm)|
|SAE J1349, net||kW||42.4 kW (56.9 HP) at 2 100 min-1 (rpm)|
|Maximum torque||Nm||236 Nm (24.1 kgfm) at 1 350 min-1 (rpm)|
|Bore and stroke||mm||98 x 110|
|Batteries||2 x 12 V / 52 Ah|
|Main pumps||3 variable displacement axial piston pumps|
|Maximum oil flow||L/min||2 x 63|
|L/min||1 x 52.5|
|Pilot pump||1 gear pump|
|Maximum oil flow||L/min||21|
|Travel||2 variable displacement axial piston motors|
|Swing||1 axial piston motor|
|Relief Valve Settings|
|Implement circuit||MPa (kgf/cm2)||26.0 (265)|
|Swing circuit||MPa (kgf/cm2)||22.6 (230)|
|Travel circuit||MPa (kgf/cm2)||31.4 (325)|
|Pilot circuit||MPa (kgf/cm2)||3.9 (40)|
|Tracks||Heat-treated connecting pins with dirt seals. Hydraulic (grease) track adjusters with shock-absorbing recoil springs.|
|Numbers of Rollers and Shoes on Each Side|
|Travel Device||Each track driven by 2-speed axial piston motor. Parking brake is spring-set/hydraulic-released disc type|
|Automatic transmission system||High-Low|
|Travel speeds||km/h km/h||High : 0 to 5.0 Low : 0 to 3.4|
|Maximum traction force||kN (kgf)||47.8 (4 870)|
|Gradeability||% (degree)||70 (35)|
SERVICE REFILL CAPACITIES
|Travel device (each side)||L||2.5|
|Hydraulic oil tank||L||60.0|
|Revolving Frame||D-section frame skirt for resistance to deformation|
|Swing Device||Axial piston motor with planetary reduction gear is bathed in oil. Swing circle is single-row. Swing parking brake is spring-set/hydraulic-released disc type|
|Swing speed||min-1 (rpm)||10.7|
|Swing torque||kNm (kgfm)||12.9 (1 320)|
|Operator's Cab||Independent spacious cab, 1 005 mm wide by 1 675 mm high, conforming to ISO* Standards. * International Organization for Standardization|
WEIGHTS AND GROUND PRESSURE
|Shoe type||Shoe width||Arm||kg||kPa(kgf/cm 2)|
|Triple grouser||450 mm||1.62 m||6 650||31 (0.31)|
|2.12 m||6 690||31 (0.32)|
|600 mm||1.62 m||6 810||24 (0.24)|
|2.12 m||6 850||24 (0.24)|
|Pad||450 mm||1.62 m||6 690||31 (0.32)|
|2.12 m||6 730||31 (0.32)|
|Triangular||500 mm||1.62 m||6 830||28 (0.28)|
|2.12 m||6 870||29 (0.29)|
|700 mm||1.62 m||6 950||21 (0.21)|
|2.12 m||6 990||21 (0.21)|
|Flat||450 mm||1.62 m||6 810||31 (0.32)|
|2.12 m||6 850||32 (0.32)|
|*Including bucket 0.28 m3 (ISO heaped) weight (211 kg) and counterweight (800 kg).|
BUCKET AND ARM DIGGING FORCES
|Arm length||1.62 m||2.12 m|
|Bucket digging force ISO||55.0 kN (5 600 kgf)||55.0 kN (5 600 kgf)|
|Bucket digging force SAE : PCSA||47.0 kN (4 800 kgf)||55.0 kN (5 600 kgf)|
|Arm crowd force ISO||38.0 kN (3 900 kgf)||32.0 kN (3 300 kgf)|
|Arm crowd force SAE : PCSA||36.0 kN (3 700 kgf)||31.0 kN (3 200 kgf)|
More Production with Less Fuel
- 7% less fuel consumption
- 22% more engine torque
- Improved heat balance
- Low-effort pilot lever
- Comfortable operating environment
- Full-auto air conditioner (Standard)
- CRES cab
Highest Criteria of Sturdiness and Durability
- WC thermal spraying at arm-bucket joint
- Reinforced bucket (Optional)
- 4-side reinforced arm (Optional)
- Track frame undercover (Optional)
Hitachi Heritage of High Maintainability
- Fuel double-filters (Standard)
- Dust-proof indoor net
- Easy-to-clean big fuel tank
- Battery disconnect switch (Optional)
Hitachi Support Chain
- Parts and service
More Production with Less Fuel. Meeting Two Competing Needs
7% Down Fuel Consumption*
Hitachi fuel-saving technology is more evolved than ever. The electronically controlled engine can curb fuel consumption behind the electronic governor, clutch fan, and isochronous control, which is one of fuel-saving technologies that can automatically control engine rpm through the electronic governor. This can suppress wasteful engine speed increase when big
*Hitachi measurements in P mode under standard digging test conditions
22% Up Engine Torque
The new engine is designed to increase its maximum torque to keep running without speed drop at high altitudes with thin air and in hot summer season. At its maximum torque, the speed is kept low to ensure stable performance even under heavy loads.
Improved Heat Balance
Even at high temperatures in summer or in continuous long hours operation, the ZX70 can lessen overheating, as cooling efficiency increases: heat balance is up 4% in engine coolant, and up 12% in hydraulic oil, compared to the conventional.
Low-Effort Pilot Lever
The new fingertip-control pilot lever reduces operator fatigue in long hours operation. This pilot lever resembles the one proven on the ZX200 in the larger class.
Highest Criteria of Sturdiness and Durability Gives Higher Productivity
1. WC thermal spraying at arm-bucket joint
- 2. Reinforced bucket (Optional)
- 3. New HN bushings at front joints
- 4. 4-side reinforced arm (Optional)
- 5. Track frame undercover (Optional)
- 6. Bucket hook (Optional)
WC Thermal Spraying at Arm-Bucket Joint
WC (Tungsten-Carbide) thermal spraying is applied on surfaces of the arm-bucket joint to form hardening layers to reduce wear and jerking significantly.
Reinforced Bucket (Optional)
The flat bottom type bucket protects its welds with wear plate. The 0.28 m3 reinforced bucket is provided optional with reinforcing plates at its bottom.
4-Side Reinforced Arm (Optional)
The arm top is strengthened with reinforcing plates on its four sides to withstand high loads.
Track Frame Undercover (Optional)
The track frame bottom is protected with a full-length undercover against obstacles.
Enhanced Operator Comfort with Refined Controls and Cab Interior
Comfortable Operating Environment
The cab is improved to enhance operator comfort and controllability. The monitor panel is positioned for easy reading from the operator. Twin analog meters are easy to read operating status. The simple-to-control switch panel is within easy reach. The comfortable vinyl-made operator seat is provided with a headrest and armrests, and is precisely adjustable to operator's build. It can be reclined and slid for pleasant positioning. Monitor panel indicators are shown lit for demonstration. Auto Idle and indicators disable.
Full-Auto Air Conditioner (Standard)
The full-auto air conditioner can keep preset in-cab temperatures by blowing fresh air. Air flow and outlets are adjusted automatically. Bi-level air flow makes it possible to warm leg space and cool head space simultaneously.
Neutral engine start system
The pilot control shut-off lever is provided with a neutral engine start system that permits engine starting only when the pilot control shut-off lever is in Lock position.
The CRES cab is reinforced with high-rigidity steel tubes at corners to significantly increase strength and rigidity for higher safety.
*CRES: Corner Reinforced Structure
Hitachi Heritage of High Maintainability to Reduce Downtime-5G
Fuel Double-Filters (Standard)
Fuel double-filters are utilized in a fuel line from fuel tank to engine to avoid plugging. Also, a solenoid fuel pump is provided standard to release air if water is mixed in fuel or fuel runs out.
Dust-Proof Indoor Net
The radiator is provided with a detachable dust protective net at its front to avoid dust entry. The net is made of three-split type for easy, quick servicing. An air nozzle port at the radiator top facilitates cleaning.
Easy-to-Clean Big Fuel Tank
The fuel tank has the ample capacity of 135 litters. Its inlet is sealed with a keyed cap for water proof type. At the bottom of the fuel tank a drain cock, which serves to easily discharge contaminants inside, and a bolted cleaning port for easy opening and cleaning.
Battery Disconnect Switch (Optional)
This battery disconnect switch is provided to avoid battery discharging and protect harnesses when the machine is not in use in winter or in long-term storage.
Hitachi Support Chain
Hitachi Support Chain is a full customer support system offered after buying a Hitachi machine
Parts and Service
Hitachi full customer support is available every area on the globe for full customer satisfaction through Hitachi local dealers.
Hitachi Global Online Network, a parts supply system, is linked with Japan Parts Center, overseas depots and over 150 dealers abroad to deliver on-line parts information, including in-stock parts, order receptions, shipments and delivery period of over one million parts and components.
Genuine Hitachi Parts
Genuine Hitachi parts, meeting Hitachi stringent quality standards, are guaranteed according to Hitachi warranty standards. The use of genuine Hitachi parts, including engine, fuel, hydraulic oil and filters, may slash running costs, and extend machine life.
Ground Engaging Tools (GETs)
Hitachi provides an array of Hitachi Ground Engaging Tools developed and built for a variety of applications. Using high-quality, well-maintained GETs will help you get customers' trust.
Note: Some dealers do not handle Hitachi GETs.
Hitachi components are remanufactured according to the stringent remanufacturing standards at four factories around the world. They have high quality equivalent to new ones, and backed up by Hitachi warranty system.
Note: Some dealers do not handle Hitachi Remanufactured Components.
Extended Warranty - HELP
Hitachi Standard Warranty System is available on all new Hitachi machines. In addition, Hitachi offers Hitachi Extended Life Programs (HELPs) to suit customer expectations - protecting machines under tough operating conditions, avoiding unexpected downtime, and reducing repair costs.
Note: Warranty conditions vary by equipment.
Diagnostic Tools - Maintenance Pro
Electronic control system needs quick on-site solutions, apart from mechanical repairs. Hitachi’s Maintenance Pro can diagnose machine failures in a short time by plugging a PC into a failed machine.
On-site servicing matters despite locations to keep the machine at peak performance and reduce downtime. Technical Training Center (TTC), located in Japan, educates and trains service technicians and service support personnel coming from Hitachi dealers and factories on the globe according to the international training programs
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