Rexroth R930050353 Hydraulic Cylinder Balance Valve for XCMG, Zoomlion, Sany Rotary Drilling Cylinde

1. Product Overview

This is a product produced byRexrothIt is athreaded cartridge-type one-way counterbalance valve. This valve is usually used to control the back pressure of hydraulic cylinders, preventing the load from falling at an excessive speed due to its own weight or external forces, and ensuring smooth and controllable movement.

2. Core Features

• Load Control: Through the precisely set pilot ratio, it allows the hydraulic fluid to flow freely from port A to port B (loading), while in the reverse direction (unloading), pilot pressure is required to open the valve, thus achieving smooth control of heavy loads.

  
  

• Anti-cavitation and Anti-shock: The optimized spool structure can effectively avoid the generation of vacuum and cavitation when the load is descending, and at the same time reduce pressure shocks, protecting the hydraulic system and cylinders.

  
  

• Compact Cartridge Design: It adopts athreaded cartridge-typestructure, with a small volume. It can be directly installed on the cylinder end cover or valve block, saving installation space, especially suitable for mobile machinery.

  
  

• High Reliability: It is specially designed for high-intensity working conditions such as construction machinery. It uses wear-resistant materials and precision machining processes to ensure long-term stable operation in harsh environments.

  
  

3. Typical Applications

• Construction Machinery: It is widely used inrotary drilling rigs, truck cranes, crawler cranes, aerial work platforms, excavatorsand other equipment'sluffing, telescoping, and boom cylindercircuits. It is a keysafety and stability control element.

  
  

• Other Heavy Equipment: It is suitable for any hydraulic system that needs to control the vertical movement of large inertia or gravity loads.