Hydraulic Systems on Tunnel Boring Machines

Hydraulic Systems on Tunnel Boring Machines
Tunnel Boring Machines has multiple hydraulic systems that controls numerous funcctions. These hydraulic systems must operate with precise control and be reliable during operation deep underground
The Dynex checkball pump with split-flow technology, provides synchronous control for multiple controls such as steering and also the insertion of concrete rings. The durability of the checkball pump provides the reliability for our customers to ensure that their projects will be completed with minimal downtime.

PV4000 Series Variable Displacement Checkball Pumps
Pressures to 8500 psi (590 bar).
Integral pressure compensation for energy efficient performance.
Contamination tolerant, for operation in dirty environments.
A wide range of fluid compatibility, for reliable operation with low lubricity, low viscosity fluids.
Optional Fluorocarbon, or EPR seals for use with some phosphate ester fluids.