Mast balance valve, Rexroth R930006447, suitable for XCMG, Sany, Zoomlion rotary drilling rigs, bala

1. Product Overview

This product isRexroth's original mast balance valve. This valve is a key hydraulic actuator of the rotary drilling rig (such as the mast cylinder and the luffing cylinder)core safety and motion control component. It is usually installed on the large cavity side of the cylinder to control the mast or boom'ssmooth lifting, precise stopping, and safe holding.

2. Core Features

• Precise speed control: When the cylinder extends (such as when the mast is erected), through the built - inone - way throttle valveit provides adjustable back pressure to prevent the load from sliding down at an excessive speed due to its own weight, ensuring smooth and shock - free operation.

  
  

• Reliable locking function: When the oil circuit loses pressure or the engine stalls, it caninstantly and automatically lock the cylinderto prevent large structural components such as the mast from accidentally settling or swinging, ensuring the safety of the equipment and operators.

  
  

• Optimized compound actions: By controlling the pressure difference between the two cavities of the cylinder, the compound actions such as mast vertical adjustment and rotation become more coordinated and precise, improving the verticality of drilling and construction efficiency.