This article mainly introduces:

Italy hydraulic cylinder,rack cylinder manufacturer,rack cylinder

(Italy rack cylinder,produced by Hengyu Group）

rack cylinder are widely used in Italy，because of simple structure and reliable operation，excellent temperature resistance，no transmission clearance.So our company has designed rack cylinder for customers from Italy.

Introduction to rack cylinder:

We can not just consider the price and ignore the quality when we purchase the rack cylinders. Now some manufacturers produce unqualified products in order to reduce costs, the piston rod is not adjusted, the rod coating is not enough, the rack cylinder finish can not reach, the guide sleeve should use copper, but instead of ductile iron, although the cost is reduced, the quality of the rack cylinder is not required.

The scar on the sliding surface of the rack cylinder piston will transfer with use. Before the piston is installed, there are scars on its sliding surface, which are installed intact and untreated, and these scars will in turn scratch the inner surface of the rack cylinder wall. Therefore, before installation, these scars must be fully repaired.

When the hydraulic oil is not pumped into the rack cylinder, it is necessary to check whether the tubing, oil circuit, especially the hose joint has been blocked, and the relevant oil circuit from the rack cylinder to the pump should be checked in turn and blocked; Check whether the seal between the taper valve and the seat of the relief valve is good; Check whether the solenoid valve spring is damaged or whether the solenoid coil is burned out; Whether the oil circuit is switched is insensitive.

When the rack cylinder wear is serious, you can try to use an alloy scraper to shave grooves with a depth of more than 1mm on the surface of the slip injury, then clean the grooves with acetone, apply the adjusted TS311 anti-wear repair agent on the polished surface with the rack cylinder inner diameter copying plate, and scrape it flat vigorously to ensure compaction and higher than the inner surface of the rack cylinder. After curing, polish to leave a finishing margin. Finally, the overall size, shape tolerance and roughness of the rack cylinder can meet the requirements by grinding. However, the life and reliability of this repair rack cylinder are not high.

Answers to some questions about rack cylinder:

When the hydraulic cylinder changes from fast to slow, how can the slow speed become more even and the speed can be adjusted?
Reversing valve set 2 reversing valves. The back of one valve goes directly to the cylinder, running at full speed for fast action. Add a speed control valve behind the other valve, and then connect to the cylinder to achieve slow action, you can adjust the opening of the speed control valve, to achieve the speed of the cylinder can be adjusted. An import speed control valve to more than 1,000 yuan, if you think it is too expensive, you can also use the throttle valve instead. However, the throttle valve is greatly affected by the load change.

Why the lifting cylinder falling by itself?
May be there is a pressure relief point. Check and repair the following parts: whether there is oil leakage in the transparent pipe at the top of the cylinder: the cylinder oil seal is broken, and the cylinder and oil seal need to be replaced; No: The multiway valve has pressure relief and needs to be repaired. Maintenance in accordance with routine maintenance items can reduce mechanical failures: 1. Check whether the thermostat works normally. 2, check the transmission shift work is normal. 3. Check the tightness of the fan belt. 4, check whether the diesel tank oil inlet filter is blocked or damaged, and clean or replace the filter. 5. Check and adjust the valve clearance.