factory directly supplied high flowing speed hydraulic center rotary joints for hydraulic Excavators

About Center Joints,we have many types for your choose, if you can't find suitable center joint in our web,pls contact us directly,we checking your products with our technical staff,maybe we can design it for you ,or produce it as per the drawing you provide.welcome visit our website

Product Feature                                                                          

1)small power loss 
2)rapid operation,optimization design of composite action 
3)high precision 

4)long service life.

Specifications                                                                             

 Model:DHZ-38

1.     Working channel: high pressure channel 2,5,6 is 31Mpa,3,4 is 17Mpa,1 is 3.1Mpa,7 is 1.7Mpa

2.     Temperature range: -20℃~+90℃

3.     Viscosity range: 2.8~380mm/s(hydraulic oil)

4.     Rate flowing speed: 2,5,6 is 310L/min, ,4 is 130L/min,1,7 is 60L/min

5.     Rotary speed: max15r/min

6.     Usage: mainly used in full hydraulic excavators, totally 7channel, rated working pressure 31Mpa

Product Photos                                                                             

Raw Materials                                                                        

Service commitment                                                                    

<1> Warranty

Q: There are so many suppliers from China, how to identify the quality?

A: All parts that we sell enjoy 3 to 12 months warranty; if any parts breaks during warranty, just offer us the proof. We'll resend you new one!

<2>Delivery

Q: What if parts we order from you are lost during delivery?

A: We'll resend the parts!

3.Lead time

Q: How many days it takes before you deliver the goods to us?

A: We have most easily-damaged parts in stock, for small goods, we could deliver you the goods after order confirmation and receving the payment; for large quantity, we need 1 or 2 more days to order wooden box or pallet, 2-3 days to book flight/vessel and deliver the goods to named port/airport.

Company Information                                                                  

Shandong Dorson Hydraulic Co.,ltd (former name Jining Automobile Spare Parts Co.,ltd, established in 1956) which developed into private joint-stock company that specialized in producing the excavator parts including idler cushion, front idler, sprocket, track roller, carrier roller, rotary joints, hydraulic redirector,  cycloid motor, one-piece multi-way valve, central rotary joints since 1998.

Shandong Dorson Hydraulic Co., ltd located in Jining City, Shandong Province —— the home town of Confucius and Mencius &the country of Courtesy. our company is a professional manufacture engaged in research &development, production and sale which founded by modern enterprise system. Covers an area of 40,000 square meters, we staff more than 200 skillful personnel including 120 with high education and equipped with advanced production,testing& inspection equipments.

Shandong Dorson Hydraulic Co., ltd adhere to the principle that“winning the market with our sincerity, meeting the challenge with our quality, broadening the market with our service” We are dedicated to revitalizing this national industry.

Production Line                                                                         

FAQ