JCM921D Hydraulic Crawler Excavator Digger Mechanical Shovel

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Product Description:

Product Description:

Excavators are heavy construction equipment consisting of a boom, stick, bucket and cab on a rotating platform known as the "house". The house sits atop an undercarriage with tracks or wheels. A cable-operated excavator uses winches and steel ropes to accomplish the movements. They are a natural progression from the steam shovels and often called power shovels. All movement and functions of a hydraulic excavator are accomplished through the use of hydraulic fluid, with hydraulic cylinders and hydraulic motors. Due to the linear actuation of hydraulic cylinders, their mode of operation is fundamentally different from cable-operated excavators.



Main Product Features:

  1. There are 3 pumps: the two main pumps are for supplying oil at high pressure (up to 5000 psi) for the arms, swing motor, track motors, and accessories, and the third is a lower pressure (700 psi) pump for Pilot Control.

  2. The whole machine has the elegant streamline design, reliable performance and high efficiency of working.

  3. Possess quality certification of ISO 9001:2000. Can pass CE test.

  4. A wide range of operating weight & bucket size for your choice.

  5. We can supply OEM service and can also produce according to your requirements.


Product Specifications:

Operating Weight: 20.5t

Engine: CUMMINS B5.9-C

Boom Length: 5.7m

Arm Length: 2.925m

Bucket Size: 0.9m3

       Operating Weight and Ground Pressure

Operating weight includes basic machine (with boom 5.7m, arm 2.925m, and bucket 0.9m3)

Shoe width

600mm

Overall width

2800mm

Ground pressure

45KPa

Operating weight

20500kg



FAQ:

Q1: How to control the Excavator?

A1: The Excavator is equipped with the open-and-shut electronic monitoring system and fault alarm system, very easy and safe to control.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 10 to 30 workdays.

Q4: If we can produce some Excavator according to customers request?

A4: Yes, we can produce Excavator according to the difference country situations to make it suitable to the market and customers. We have very professional technical team to make the design.

Q5: How to make a quick resolution for after service?

A5: OKorder and our manufacture both have overseas branches all-around of world, if necessary, the seller shall dispatch 2 engineers to the buyer's site for supervision of training. The buyer shall make available of necessary facilities & skilled personnel at site for training.



JCM921D Hydraulic Crawler Excavator Digger Mechanical Shovel


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Q:The hourly fuel consumption and digging capacity of excavators 10
If you use some larger excavators, such as 220; 300; 350; 400; oil consumption and excavation volume have different degrees of improvement.
Q:How do you distinguish a backhand forehand from an excavator?
The upper and lower handles are to control the rotation of the backhand, and the left and right control rotation is forehand, general Tianjin backhand car more, I drive is the backhand car, in fact, the forehand and backhand open habit, which is the same
Q:Who can tell me about Doosan and Sunward Intelligent excavator which good? What are the advantages and disadvantages?
Doosan used Korean goods, but also cheap, that is, bad quality, old and bad
Q:Working principle of excavator running motor
Excavator motor principle: the large crawler excavator machine weight is generally above 20t, machine inertia, in the process of starting and stopping of the machine will bring bigger impact to the hydraulic system, therefore, must improve the walking control system to adapt to this condition.The motor generally adopts high speed motor plus planetary reducer or cycloidal pin gear reducer, while the control of the loop of the hydraulic motor has its characteristics. Walking motor control loop shown in Figure 1, the motor is equipped with a high-pressure automatic variable device, when hung high gear when the circuit is connected with the manual transmission oil to oil, promote the transmission valve moves to the left, the motor for small displacement; if the driving resistance increases the pressure rises to the set value, the oil valve drive transmission right for large displacement, low gear automatic variable motor, to increase the torque. Therefore, the motor can automatically change gears as the walking resistance changes.
Q:Which brand of excavators is of the best quality?
Fuel efficient and fast. Disadvantages: Volvo new machine can be, but domestic serious, more fragile, not enough thick, two mobile phone price is low, not good sell. 20T models, EC210B reference price, 100-106W Doosan: Korean brand, integrated more moderate, imported machines are low-end products, assembled. (DOOSAN) advantages: low price, low fuel consumption in -8 series. All kinds of projects are available. Disadvantages: the product quality is lower than the average price, moderate price, moderate quality, and poor after-sale. Low inflation. 20T models, DH215-9 reference price, 80-85W DH225-9 86-91W Hyundai: Korean brand, but it is low-end goods, assembled. (HYUNDAI) advantages: cheaper prices, good parts, cheap. Disadvantages: machines can't even reach the standard of domestic machines, either good or bad. Personal view: imported brands can only buy more than these brands, Keith (CASE), JCB (JCB), Kato (KATO), Terex (TEREX), Bohai Seoul (LIEBHER), Sumitomo (SUMITOMO), Ishikawa Shima (IHI), Kubota (KUBATO), Takeuchi (TAKEUCHI) are not allowed to buy. Low share, customer service service points less, difficult to buy accessories, if you buy, there will always be these problems. Komatsu and Carter belong to the independent production brand, the primary consideration
Q:Kobelco excavator computer alarm P0405 is what mean?
EGR valve opening position sensor 1 failure (LOW)
Q:LOL, who controlled the new hero excavator?
And no one made it. The new hero excavator is the full name of void lurker ray Alexis, she was a group leader, who is not manufacturing.Is she in the population size of thunder Alexis, the most violent temper. She is a ruthless predator who can dig tunnels in the ground to ambush and devour her prey. Her insatiable hunger has made the peak moment to Rama Empire over the ruins. Businessmen, traders and armed caravan will bypass 100, to avoid these vast areas of people, but cunning bandits will lure unwary into thunder killing of alexis. Once detected by ray, fate is doomed. There is no hope of escape; she is death from gravel.
Q:What kind of excavator is trong?
It's built in Shandong, JCM.Excavator: excavator is a kind of special engineering vehicle, which is composed of rotating platform, large shovel and mechanical arm.
Q:Which brand is good for excavator?
Integrated cost performance, I will consider, machine, Wang Jiateng! High speed, good stability, low failure rate, low fuel consumption. Key secondary values are very high.
Q:How to distinguish between good and bad excavators, ah, there is nothing wrong with what
Excavator, also called excavating machinery, is a kind of earthmoving machine that uses bucket to excavate material that is higher than or lower than the machine surface and is loaded into transportation vehicle or unloaded to the stacker. Excavators are mainly made of soil, coal, sediment, and soil and rocks that have been pre - loosened. From the development of engineering machinery in recent years, the development of excavator is relatively fast, excavator has become one of the most important construction machinery in engineering construction. The three most important parameters of excavator are operation weight (quality), engine power and bucket bucket capacity.Correlation parameterOperating weightOperating weight is one of the three important parameters of excavator (engine power, bucket capacity, operating weight)Operating weight determines the level of excavator and determines the upper limit of excavator digging power.The digging force is less than or equal to m; weightM: adhesion coefficient between floor and trackIf the digging force exceeds this limit, the excavator will slip and be pulled forward in the case of the backhoe, which is very dangerous. In the case of a positive shovel, the excavator will skid backward.Digging forceFor digging force, the digging force is mainly divided into small arm digging force and bucket digging force.The digging points of the two digging forces are the root of the bucket (bucket side of the mouth), but the power is different. The small arm digging force comes from the small arm cylinder, and the bucket digging force comes from the bucket cylinder.Bucket digging force (2 pieces)Ground specific pressureThe ground pressure is decided by the size of ground pressure.Ground pressure refers to the weight of the machine to the ground, expressed in the following formula:Ground pressure = weight / total contact area with the ground

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