Air Return Hydro Speed Regulator


Hydro speed regulator Spring Return Type are used primarily for standard drilling operations and are designed to automatically return to their position at the end of every drilling cycle.
With the RB spring return Hydro Speed Regulator, the piston rod is automatically returned to its original position by the built-in spring when the piston rod is no longer loaded.

PURROS® Hydro speed regulator (RA) Parameters

Model Max stroke Load range Adjusting range of speed Impact energy permitted Weight(Basic body)
Air return type mm N Mm/sec J Kg
R-2440A 40 200-1,500 F=200N       0.35-5
F=1,000N     0.5-25
F=1,500N    05-50
2.3 1.12
R-2460A 60 1.13
R-2480A 80 1.47
R-24100A 100 1.48
R-3180A 100 500-3,000 F=500N      03-12
F=2,300N      0.5-25
F=3,000N      0.6-50
3.5 2.2
R-31130A 100 2.8
R-31180A 180 3.3

PURROS® Hydro speed regulator (RA) Size

Purros Machinery also have other models (Maximum Stroke:40-180mm, Load Range:200-3000n, Withstand Impact Energy:2.3-3.5j)

Purros Machinery Hydro speed regulators are designed to control the forward speed (feed rate) of the Electro Pneumatic Drilling Units. Use of a regulator provides adjustable feed rates, faster cycle times, reduces burring, eliminates drill breakage, and prevents sudden forward surges at drill breakthrough. One regulator is required per Electro Pneumatic Drilling Units for drilling operations.

Even if remove the load of piston rod of R-A type hydraulic damper, the piston rod still can stay at original position, only provide compressed air piston rod can return, a multiple setp feed control can be carried out.

Air return regulators serve the same function as the spring return type in that they control the forward speed of the drill. However, the air type requires an air signal at the end of each drilling cycle to return the regulator to its original position. Also, these regulators are required for peck feed drilling as they are capable of holding the drilling depth at the end of each peck feed motion.

1. With the position of the piston rod maintained along the strokes as desired efficient pack feed drilling is possible.
2. Longer strokes available for extended application purpose.
3. Easy to install, Leakproof, No need for piping or wiring.
4. Constant Speed.
5. Life of Millions of cycles without leaking.


There are no reviews yet.

Be the first to review “Air Return Hydro Speed Regulator”

Your email address will not be published. Required fields are marked *