Shandong Dezhou Hengte Heavy Industry Co., Ltd. is a professional manufacturer of excavators integrating scientific research, manufacturing, sales and service. Now it is an annual production of "Hengte" brand HTL150, HTL135, HTL120, HTL90, HTL85, HTL70, HTL60 and other tire excavators and HT150, HT90, HT85, HT65, HT21 and other crawler excavators, grabs, stone grabs, etc. 3000 More than 500 sets of "Dynamic" full hydraulic rotary impact drilling rig (anchor drilling rig) and tree transplanting machine (tree digger) with an annual output of more than 30,000 various types of excavating machinery. It is an important wheel excavator in China. And the development and manufacturing base of crawler excavators. HT21 series miniature excavator products inherit the constant innovation design concept of Hengte Heavy Industry. In the structural principle, it adopts 360°+90° side swing arm, no tail swing design, full imported hydraulic system, good compound action and fast turning speed. The utility model has high operation efficiency, and the whole machine has the characteristics of compact structure, flexible operation and convenient maintenance. It is an ideal working machine for construction of narrow space such as agriculture, forestry, water conservancy and engineering construction, and is an ideal equipment for replacing labor and liberating labor. The engine adopts Yanmar engine (optional with Lai engine), and there are maintenance service outlets all over the country, which is convenient for maintenance, low fuel consumption and low noise. The Japanese KYB plunger variable pump is used to form the independent hydraulic system of the boom, the arm and the swivel, achieving fast and smooth operation. The main valve adopts imported Parker, which has high performance and excellent operation performance. It has a broken pipeline and control device, and can be crushed by installing a breaker. The slewing adopts Eaton motor, which has reliable quality, large displacement, high torque and strong adaptability to working conditions. Eaton imported walking device, the performance is more stable, the quality is more reliable. The left and right pilot handles are equipped with a short handle control valve, which makes it easier to get on and off the vehicle without affecting the performance. It prevents misoperation and increases safety. Special armrest box, high grade; left box can be lifted, small swing angle, both beautiful and easy to get on and off; right tank throttle handle can be rotated, can be pulled, humanized design. The integrated instrument panel displays parameters such as water temperature, speed, oil pressure, and operating time. All work unit tubing is built in to prevent damage during operation, improve work safety and provide peace of mind. The boom cylinder is flipped over the upper part of the boom to avoid damage to the cylinder during excavation work. The important load-bearing parts of the chassis, the upper frame and the working device are all welded by Q345 steel plate, and the strength is safe and reliable. The rubber track can reduce vibration without damaging the road surface. Easy maintenance (1) The left hood can be opened, and it is convenient to add antifreeze and overhaul the radiator. (2) The horizontal open rear hood makes it easy to overhaul the engine. About Hengte Shandong Dezhou Hengte Heavy Industry Co., Ltd. is located in the National High-tech Industrial Development Zone of Dezhou (禹城), Shandong Province. It is one of the earliest enterprises to produce economical excavators in China. The leading products include 2 tons to 23 tons of wheeled and crawler excavators. The products are exported to Asian and African countries and regions, and have become the top brand of the top ten excavator brands and wheeled excavators. 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