空圧駆動油圧ポンプ

Application
The hydraulic clamping pump is particularly suitable for small to medium-sized clamping and assembly fixtures with single-acting cylinders, which operate primarily by intermittence (pressure build up and pressure holding).

Description
The tandem plunger pump is built into the oil reservoir in a space-saving manner. It operates with oscillating movements and automatic stroke reversing control by a pilot-operated 4/2 directional control valve. The stroke frequency and thereby the flow rate depend on air pressure and hydraulic counter pressure.

Control variants
Manually-operated 3/2 directional control valve
This valve is equipped with a turning handle for direct operation at the power unit.

Pneumatically-operated 3/2 directional control valve
This valve is mounted on the power unit allowing for pneumatic remote control, which, however, requires an additional pilot valve (accessory). According to the length of the pneumatic piping between both valves, there is a longer or shorter time delay for the clamping and unclamping operation.

Without valve as pressure generator
For external valve controls (P and R ports only).
The pump unit maintains constant the adjusted pressure.

With attached valve control
For single and double-acting cylinders.

Delivery
The power units are delivered complete and ready for connection. On the pneumatic side there is a service unit with pressure reducer and filter. An additional pressure relief valve prevents increase of pressure over 4.8 bar, and thus operating pressures over 500 bar on the hydraulic side. With valve control fitted, the customer must ensure that the valves are controlled.