http://www.speedregulator.com/Hydro-Speed-Regulator/Hydro-Speed-Regulator-RB.html is a kind of hydraulic type control device of feed speed that can adjust freely feed speed of air cylinder from low speed to high speed within the range of expectation. Ways of control includes spring return type; you can make a choice according to your requirements.

Model RB spring return type

The piston rod will return to an original position autormatically when discharge the load of piston rod of hydraulic damper Model RB.

Features

+ Compact structure, direction of installation is free.

+ Adopt full-sealed structure that isn't required to fill with work oil; it can keep long-time and stable control function.

+ Quick load change only causes little change of control speed; it can get stable feed speed.

+ Feeding speed can be easily adjusted by speed control button.

Example of usage

1.Regulation of feed speed of drill head

2.Regulation of feed speed of slide plate