Complaint
VM30 MAIN VALVE
| Model | VM30 |
| Max flow | 320L/min |
| Oil temp range | -20ºC~+90ºC |
| Main relief valve set pressure | Std 34.3(+1/0)MPa, when 150L/min |
| Boost 37.3(+1/0)MPa, when 140L/min | |
| Port relief valve set pressure | Boom,arm,bucket 39.0(±0.5)MPa, when 20L/min |
| Option 25(±0.5)MPa, when 20L/min | |
| Negative control valve set pressure | 3.2(+0.7/0)MPa, when 30L/min |
Shandong CCHC Hydraulics Co., Ltd. formerly was established in February, 2010, and officially put into operation on October 14th, 2011. The total investment is 2.6 billion yuan, which is one of the largest high-end mechanical power flow products in China so far. The main products include pumps, valves, motors, reducers, gearboxes, etc. The product application covers engineering machinery, agricultural machinery, industry and other fields.
On August 6, 2012, the company's products of 20 ton excavator negative flow pump, positive flow pump, positive flow valve and rotary motor passed the national qualification. In addition, the company has been listed in the national equipment manufacturing industry structure adjustment special project in 2010, the international science and technology cooperation project of the Ministry of science and technology in 2011, the major science and technology achievements transformation project in 2012, and the 2012 National Torch Program project, etc., and obtained the relevant policies and financial support from the state and local governments. In November 2014, the national "Linyi high-end hydraulic components and system industry cluster area" which was declared by CCHC hydraulics power of Shandong Province passed the nation review successfully, and was successfully approved as the pilot of regional agglomeration development of strategic emerging industries.
On February 1, 2021, the company's chinese name was officially changed into Shandong Zhongrun Hydrualics Machinery Co., Ltd. we will uphold the spirit of CCHC brand, as always, we will serve domestic and foreign customers with high-quality products, and strive for glory for the nation!
