7T Hitachi ZX70-5A Crawler USED Excavators Accessories Special
Device Japan Isuzu Engine Hydraulic System
Hitachi zx70-5a is a hot product of small excavator under Hitachi
brand. In the municipal construction, water conservancy
construction, road construction site often appear its shadow.
1, Power system
Hitachi zx70-5a is equipped with the original imported engine of
Yangma 4tnv98, which can reach the maximum torque of 236nm at
1350rpm. This engine is equipped with a common EGR system, which
effectively reduces the emission of air pollutants, and the exhaust
emission meets the national third standard. In addition, the engine
also uses "electronic governor" and "clutch fan", which effectively
improves the fuel efficiency. The hydraulic system adopts
independent rotary 3-pump hydraulic system, which has superior
basic performance and high controllability.
2, Comfort and safety of cab
Hitachi zx70-5a adopts CRES cab which is highly praised for its
comfort. The main part adopts high rigid steel pipe, which improves
the overall strength of the cab. And the D-shaped cross-section
frame is adopted to improve the strength of resisting external
impact and further improve the safety of the cab. Under the premise
of ensuring such high safety, the cab of Hitachi zx70-5a still has
a wide field of vision. The back of the boom will not block the
line of sight of the front window, which can clearly confirm the
operation status. The interior has ample space for leg movement,
the seat is made of durable leather, the seat and back can be
adjusted, and the roof skylight can be opened.
3, Convenience of maintenance
The convenience of maintenance of a excavator is an important
factor in the purchase. Hitachi zx70-5a has carried out a series of
optimization design for the convenience of maintenance. The main
fuel filter, fuel pre filter, oil filter, water separator and
electric fuel pump are concentrated in the pump room. A grease
barrel bracket is installed on the right side of the cab to
facilitate daily maintenance.
There are many kinds of front-end auxiliary working devices of
excavators. According to statistics, there are about 20 kinds of
them to deal with various complex working conditions. However, many
customers know little about them. Now let's explain some common
equipment for your reference.
1, Crushing hammer
Crushing hammer is also known as hydraulic crusher. Crushing hammer
is also known as gun head in the south. It is mainly used for
mining ore and demolition of concrete.
2, Hydraulic shear
Hydraulic scissors, also known as hydraulic forceps, are mainly
used in the demolition of buildings, and their efficiency is much
higher than that of crushing hammer.
3, Vibrating rammer
Vibration rammer, also known as hydraulic rammer or rammer, is
mainly used for water conservancy slope protection, high-speed and
railway slope construction, and some small excavators are used for
building foundation compaction.
4, Excavator accessories -- quick connector
Quick connect machine, also known as quick joint or quick
change-over joint, is specially used to switch the crushing hammer
(or other equipment) and the digging bucket. Generally, skilled
operators can switch equipment in no more than 30 seconds. In the
past, it took 40 to 60 minutes and more than two people to operate.
5, Scarifier
Scarifier, also known as Ripper, is mainly used for weathered stone
construction. It is easy to use when working in layers. It is hard
to dig the bucket, and it is a little easy to waste when breaking
the hammer. At this time, the use of scarifier will greatly improve
the construction efficiency. First, use the scarifier to separate
the soil layer or weathered stone layer, and then use the quick
connector to switch the bucket for loading.
6, Wood Grabber
Wood grabber, also known as wood clamping machine, is divided into
hydraulic grabber and mechanical grabber. Hydraulic grabber is also
divided into hydraulic rotary grabber and fixed grabber. After
redesigning and modifying the claws, the wood grabber can be used
to grab stones and scrap steel. It is mainly used to grab wood and
bamboo. Loading and unloading vehicles are very fast and
convenient.
7, Hydraulic rock drill
Hydraulic rock drill, also known as drilling machine, is mainly
used in mine blast hole construction.
Parameter configuration of Hitachi ZX70-5A excavator
Specifications
| power | traditional power |
| Tonnage (ton) | 7 |
| Operating weight (kg) | 7000 |
| Bucket capacity (M3) | 0.33-0.38 |
| Boom length (mm) | 3720 |
| Stick length (mm) | 1620 |
Dynamic System
| Engine model | Yangma 4TNV98 |
| Rated power (kW / RPM) | 42.4/2100 |
| Displacement (L) | 3.318 |
| Cylinder diameter × stroke (mm) | 98×110 |
Body size
| Total transport length (mm) | 6080 |
| Total transport width (mm) | 2260 |
| Total transport height (mm) | 2600 |
| Full height of cab (mm) | 2600 |
Shanghai LONGHUA CONSTEUCTION MACHINERY Co., Ltd.
Spot sales of 5000 sets of used machinery and equipment,
excavators, forklifts, bulldozer, cranes, loaders, graders, road
rollers and other construction machinery.
Sales of excavator brands: Komatsu, Carter, Hitachi, Shengang,
Doosan, Volvo, Hyundai, Kubota, Sany, Sumitomo, Kato, etc
