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Type X



The high pressure Type X hydraulic pump is available with either three or six axial pistons actuated by a single rotating swash plate.
The six piston version can also be supplied with duplex deliveries which may be used for simultaneous high and low pressure applications when used in conjunction with an automatic

unloading valve. Other output combinations are available.
Various combinations of flows and pressures are possible within the 10 kw range up to a maximum of 690 bar (10,000 psi) at 6.96 litres/min (1.53 gpm). Special high pressure versions are available for pressures up to 1,000 bar.
A modified form of this pump, Type XW, is available for pumping water/glycol fluids.


Material
Cast iron casing. Mild steel cylinder block/shaft. (Other materials available for special purposes).

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

System temperature
Minimum – 10 maximum + 70.

Drive speed
Maximum 1800 rpm.

Weight
35 Kg.
Pressure and flow combinations

Pump No. Piston size Theoretical
flow (cc/rev)
Max pres. (bar)
Three piston versions
07419 - 41 3 x 0.375 3.52 690
07419 - 42 3 x 0.437 4.80 690
07419 - 43 3 x 0.500 6.25 663
07419 - 44 3 x 0.562 7.90 524
07419 - 45 3 x 0.625 9.79 423
07419 - 46 3 x 0.687 11.79 351
Six piston versions
07420 - 41 6 x 0.375 7.17 577
07420 - 42 6 x 0.437 9.58 430
07420 - 43 6 x 0.500 12.50 331
07420 - 44 6 x 0.562 15.80 262
07420 - 45 6 x 0.625 19.58 211
07420 - 46 6 x 0.687 23.58 175
Pump output is proportional to drive speed to a maximum of 1,800 rpm. Short stroke versions of this pump are also available for low flow applications.
Installation

Rotation is bi-directional and the pump may be mounted horizontally or vertically 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 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 1.20 m/sec (4 ft/sec) in the suction line.
We recommend that the fluid reservoir should be 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.
Maintenance instructions and a spares list are provided with each pump.



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