The high pressure Type M hydraulic axial piston pump is of a rotating swash plate design which enables either single or multiple deliveries from the same pump.

Various combinations of flows and pressures are possible within the 2.0 kw range up to a maximum of 690 bar (10,000 psi) at 1.15 litres/min (0.25 gpm) for continuous working and up to 850 bar for intermittent usage. The pump is quiet in operation; its numerous applications include laboratory use, swaging, pressing and tensioning machines. Under normal working conditions the M pump gives long life and requires little maintenance.

Installation

Rotation is bi-directional and the pump may be mounted horizontally or vertically (shaft up) using a three piece flexible drive coupling between the pump and prime mover. If vertical mounting is selected, our Technical Department should be consulted.

A suction filter of at least 125 microns should be used, and care should be taken to ensure that the filter is of adequate size and does not cause more than 300 mm (12?in) Hg depression at the pump suction port when operating at full flow.

A return line filter of 10 microns rating should be fitted. Pipes should be of sufficient size to give not more than 3.70 m/sec (12 ft/sec) fluid velocity in the delivery line and not more than 1.3 m/sec (4 ft/sec) in the suction line.

As a guide, based on the port sizes of the pump, delivery lines should be 6.5 mm (1/4?in) bore and suction lines 13 mm (1/2?in) bore. We recommend that the fluid reservoir should be kept between 50 mm (2 in) and 3 m (10ft) above the suction port.

A safety relief valve set at the maximum pump rating should be fitted immediately downstream of the pump delivery port.

Pump characteristics options

Pump No.	No. of pistons and size	Stroke length	Theoretical flow(cc/rev)	Max pressure (bar)

Material

Entirely made of 316 Stainless steel other than the pump shaft which is USA SPEED 55.

Fluids

A mineral-based oil is recommended with additives to resist corrosion, oxidisation and foaming.

Temperature

Minimum –10°C; maximum +70°C.

Weight

10.50 Kg