Welcome to www.aakindustry.com

The 1 million times durability of hydraulic counterbalance valves, AAK quality benchmarked with SUN hydraulics, but the price was 30% cheaper

Views : 393
Update time : 2022-08-18 10:58:07

Last week, the German customer Thorsten sent an order for 1,200 hydraulic counterbalance valves, and said that only AAK and SUN hydraulic counterbalance valves passed 1 million durability tests among the 6 hydraulic valve manufacturers making the samples. However, the price of AAK was 30% lower than that of SUN, and the delivery time was faster.

 

In May this year, Thorsten’s company received an order for a batch of special hydraulic winches. The customer requested that the equipment be guaranteed for at least 1 year of service life. The engineer required that the durability test of the hydraulic counterbalance valve to be purchased by Thorsten must reach more than 1 million times. Thorsten found a local hydraulic counterbalance valve manufacturer to carry out the test. After 100,000 times, the O-ring wear affected the seal. After the sealing ring was replaced, the valve spool and valve body were worn and leaked again after 200,000 times, and the local manufacturer surrendered.

 

Thorsten had to find a manufacturer of hydraulic counterbalance valves with higher durability. In order to avoid wasting purchasing time again, the two schemes were carried out simultaneously. One is to purchase the original SUN hydraulic counterbalance valves, and the other is to find a factory for customized hydraulic cartridge valves. When Thorsten contacted AAK, I told him that the requirement of hydraulic counterbalance valves for 1 million times was not very high. How could local hydraulic valve manufacturer fail? Thorsten said that when testing this hydraulic counterbalance valve, the opening and closing cycle time is set to 5 seconds, the set pressure is 21 PMa, and the flow rate is 9L/min. The wear resistance of the sealing ring, valve spool and valve body is at least 50% higher than that of the conventional hydraulic counterbalance valves. This time, including AAK, there are 6 hydraulic valve manufacturers to make samples.

 

More than a month later, Thorsten said that among the 6 hydraulic counterbalance valve manufacturers, only AAK and SUN hydraulic counterbalance valves have passed the durability test for 1 million times, but the price of AAK is 30% lower than that of SUN. At the same time, AAK can provide a delivery time 4 weeks faster than that of sun. Thorsten especially wants to know why AAK is so strong. AAK hydraulic counterbalance valves are different from peers due to the following 3 points: 

 

1. AAK adopts Japanese special polyurethane rubber sealing ring for this hydraulic counterbalance valve. Under the special working condition required by Thorsten, the durability limit of rubber sealing ring is about 100,000 times only, while the wear-resistant and high-pressure resistance performance of ours is more than twice that of other rubber sealing rings.

 

2.    The 20CrNi2MoV high carburizing bearing steel imported from Germany adopted by AAK, combined with the carburizing pretreatment process and through the secondary quenching + cryogenic treatment + low temperature tempering process, has a microhardness of 237-247HV, and its wear resistance and contact fatigue performance have been improved by more than 3 times. Most hydraulic counterbalance valve manufacturers can not master the key of heat treatment even if they choose this steel.

 

3.    AAK has its own durability test equipment independently developed, combined with NFPA/T2.6.1 standard, each hydraulic counterbalance valve is tested and meets the standard.

 

AAK hydraulic counterbalance valves, benchmarked with SUN, you can also try a small order!

 

AAK HYDRAULIC CARTRIDGE VALVES (322) 2022-08-18

Related News
Read More >>
What are the impacts on China's top Hydraulic Threaded Screw-in Cartridge Valve Manufacturer AAK under the trade war? What are the impacts on China's top Hydraulic Threaded Screw-in Cartridge Valve Manufacturer AAK under the trade war?
Apr .23.2025
Due to the tariff war initiated by the Trump administration, all of our American customers have ceased inquiries, orders, production, and shipments, resulting in orders being put on hold.
The PV72-30AM Proportional Valve Assembly that AAK shipped to a European customer passed testing, and customer placed the repeat order The PV72-30AM Proportional Valve Assembly that AAK shipped to a European customer passed testing, and customer placed the repeat order
Apr .15.2025
2 months ago in early February, AAK customized a PV72-30AM Proportional Valve Assembly for a European customer.
How to select the suitable material for Seals of Different Hydraulic Screw-in Cartridge Valves? How to select the suitable material for Seals of Different Hydraulic Screw-in Cartridge Valves?
Mar .17.2025
Chinese Hydraulic Screw-in Cartridge valve manufacturer AAK often receives various questions from overseas customers, some of which even come from college students conducting academic research.
How does Chinese OEM Hydraulic Screw-in Cartridge Valve Manufacturer AAK inspect the quality of the Hydraulic Screw-in Cartridge Valves? How does Chinese OEM Hydraulic Screw-in Cartridge Valve Manufacturer AAK inspect the quality of the Hydraulic Screw-in Cartridge Valves?
Mar .11.2025
For each hydraulic Screw-in cartridge valve, hydraulic cartridge valve manufacturer AAK conducts very strict quality inspections from raw materials to shipment, and the inspection processes is roughly as follows: