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Type SMW

Type LMW

Type XW

Type XW30

Type XWH

Type XWJ

Comparison of pump types


Rotating swash plate design – 3 or 6 pistons
Flow/pressure combinations within 15 Kw range
– up to 41 l/m or up to 1040 bar continuous
Pump construction primarily stainless steel with a painted cast steel case
Duplex operation option
Vertical or horizontal mounting
Cool case for continuous operation

The high pressure XW type hydraulic pump is suitable for a wide range of fluids including water-based solutions and oil-based fluids. Separation of the lubricating oil and the pumped fluid is achieved by the installation of a cavity between the cylinder block and the case. Bypass from the pistons is collected in this cavity and returned to the inlet side of the pump.

The pump is available with either three or six pistons. The six piston version can be supplied with duplex deliveries which may be used for simultaneous high and low pressure applications when used with an automatic unloading valve. Additional variations are possible by varying the input speed to a maximum of 1,800rpm.

Various combinations of flows and pressures are possible within the 15 kw range up to a maximum of 1040 bar (15,080 psi) and flow rates up to 41.2 l/m (10.8 USg/m) – see table below.


Rotation is bi-directional and the pump may be mounted horizontally or vertically.

A suction filter of 150 microns or better should be used. Finer filtration is desirable for the pump life, but is important that the inlet flowrate to the pump is not restricted and no more than -2 in.Hg is measured in the suction pipework under pumping conditions. Where possible a positive pressure should be maintained in the suction pipework under flowing conditions. When the pump is stationary the suction line should be kept under positive pressure to allow priming.

Important - pumps are delivered from Marshalsea with the case lubricating oil drained. Before the pumps are used, the case should be filled with Castrol Alphasyn PG150 to the level specified on the pump technical data sheet


All externally exposed components are manufactured from 316 stainless steel, except the case which is painted cast steel (Norsok M501 paint system is available). Pump shaft is medium carbon steel EN9 or EN8M.


45 Kg

Pump characteristics options

Part Number Superceeds Type Maximum pressure rating Number of pistons Displacement CC/rev
XW-00-00159-0870-3-5-CC-X-XX-XX 11196-50R1 870 bar 3 1.59
XW-00-00159-1040-3-5-CC-X-XX-XX   1040 bar 3 1.59
XW-00-00208-0870-3-5-CC-X-XX-XX 11196-51R1 870 bar 3 2.08
XW-00-00208-1040-3-5-CC-X-XX-XX   1040 bar 3 2.08
XW-00-00263-0870-3-5-CC-X-XX-XX   870 bar 3 2.63
XW-00-00263-1040-3-5-CC-X-XX-XX   1040 bar 3 2.63
XW-00-00320-0870-3-5-CC-X-XX-XX 11196-60R1 870 bar 3 3.2
XW-00-00320-1040-3-5-CC-X-XX-XX   1040 bar 3 3.2
XW-00-00416-0870-3-6-CC-X-XX-XX 11196-61R1 870 bar 3 4.16
XW-00-00416-1040-3-6-CC-X-XX-XX   1040 bar 3 4.16
XW-00-00480-0870-3-4-CC-X-XX-XX 11196-40R1 870 bar 3 4.8
XW-00-00526-0870-3-6-CC-X-XX-XX   870 bar 3 5.26
XW-00-00625-0870-3-4-CC-X-XX-XX 11196-41R1 870 bar 3 6.25
XW-00-00790-0520-3-4-CC-X-XX-XX 11197-42 520 bar 3 7.9
XW-00-00979-0520-3-4-CC-X-XX-XX 11197-43 520 bar 3 9.79
XW-00-01179-0435-3-4-CC-X-XX-XX 11197-44 435 bar 3 11.79
XW-00-01250-0420-6-4-CC-X-XX-XX   420 bar 6 12.5
XW-00-01580-0330-6-4-CC-X-XX-XX 11202-42 330 bar 6 15.8
XW-00-01958-0260-6-4-CC-X-XX-XX 11202-43 260 bar 6 19.58
XW-00-02358-0220-6-4-CC-X-XX-XX 11202-44 220 bar 6 23.58

Additional Options

Mount Options

H - Horizontal mount
V - Vertical mount

Inlet Connection Options

04 - 3/4" BSP Female Inlet
09 - 3/4" NPT Female Inlet
05 - 1" BSP Female Inlet

Outlet Connection Options

03 - 1/2" BSP Female Connection (Pressures up to 520 bar)
08 - 1/2" NPT Female Connection (Pressures up to 870 bar)
11 - 1/4" Medium Pressure Female Connection
12 - 3/8" Medium Pressure Female Connection
13 - 9/16" Medium Pressure Female Connection


(c) Marshalsea Hydraulics Limited – a member of the Bifold Fluidpower group of companies.

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