This article mainly introduces:

Ethiopia hydraulic cylinder,roller press hydraulic cylinder manufacturer,roller press hydraulic cylinder

(Ethiopia roller press hydraulic cylinder,produced by Hengyu Group）

roller press hydraulic cylinder are widely used in Ethiopia，because of no need for deceleration device，high work efficiency，excellent fatigue and impact resistance.So our company has designed roller press hydraulic cylinder for customers from Ethiopia.

Introduction to roller press hydraulic cylinder:

The advantages and disadvantages of the roller press hydraulic cylinder: the surface of the roller press hydraulic cylinder by painting, coating protection treatment, bright luster is not easy to rust, all raw materials of the roller press hydraulic cylinder through the top heat treatment, high manufacturing precision, belongs to the precision machinery, has a simple structure, stable quality, high mechanical efficiency, easy to achieve automation and many other advantages. However, hydraulic technology also has the shortcomings of oil leakage, oil temperature change affecting the control of running speed, noise, expensive cost and high maintenance cost.

roller press hydraulic cylinder is the most important part of construction machinery, the traditional processing method is: broaching roller press hydraulic cylinder block - fine boring roller press hydraulic cylinder block - grinding roller press hydraulic cylinder block. The rolling method is: broaching roller press hydraulic cylinder block - fine boring roller press hydraulic cylinder block - rolling roller press hydraulic cylinder block, the process is 3 parts, but the time is compared: grinding 1 meter of the roller press hydraulic cylinder block is about 1-2 days, rolling 1 meter of the roller press hydraulic cylinder block is about 10-30 minutes. Input comparison: grinding machine or quilting machine (tens of thousands - millions), rolling knife (ten thousand - tens of thousands). After rolling, the surface roughness of the hole decreases from RA3.2-6.3 μm before rolling to Ra0.4 ~ 0.8μm, the surface hardness of the hole increases by about 30%, and the fatigue strength of the inner surface of the roller press hydraulic cylinder increases by 25%. If the roller press hydraulic cylinder life is only considered, it is increased by 2 to 3 times, and the boring and rolling process is 3 times more efficient than the grinding process In particular, if you want to make high-quality roller press hydraulic cylinders, you must take the rolling production process. After the roller press hydraulic cylinder is rolled, there is no sharp tiny edge on the surface, and long-term motion friction will not damage the seal ring or seal, which is particularly important in the hydraulic industry.

If the roller press hydraulic cylinder piston rod is found to be worn, it can be brushed and plated first, then ground, and finally adjust the mating accuracy of the piston rod and the guide sleeve. At this time, the guide sleeve can be properly redrilled or the guide sleeve can be re-turned. When making the above repairs, remember to replace various rubber seals in time.

The difference between the plunger roller press hydraulic cylinder and the piston roller press hydraulic cylinder is that the piston in the roller press hydraulic cylinder is replaced by a shaft plunger, which is used in hydraulic transmission requiring a long mechanical stroke, and can only input pressure oil from one direction, pressurize in a single direction, and form a thrust to push the plunger to move. The return trip of the plunger depends on the plunger itself to fall, and some rely on the spring to push back to the original position. Usually used plunger type roller press hydraulic cylinder, its inner hole does not need mechanical finishing, as long as the plunger round grinding can be assembled.

Answers to some questions about roller press hydraulic cylinder:

What's a minus 40 cylinder made of?
Construction with 1Cr18Ni9Ti, in low temperature conditions impact and tensile strength are very good, can withstand -100 degrees of low temperature, corrosion resistance, material price is not very high, more economic.

How big is the pump and motor for 20 tons of hydraulic cylinder?
According to the working pressure of 25 mpa estimate, the cylinder should use 100mm bore, 63mm piston rod, stroke 40mm. According to 30 reciprocating calculation, the flow rate is about 25 liters/minute. The motor power is 11 kW, want to be cheap, use 25SCY14-1B oil pump can be.