David Brown Hydraulics

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Q Series Pump Range

In response to market needs, the David Brown Hydraulics QR and QS ranges have been developed to combine very high efficiencies with very low noise levels while retaining the rugged simplicity of well-proven hydraulic gear pumps. Both series are of cast iron construction and high quality steel gears are supported by hydrodynamic plain (bush) bearings which are lubricated by a system which draws cool fluid from the inlet port. The David Brown QR spur gear pumps are designed for minimum pressure ripple while the David Brown QS Series features patented helical gears which reduce ripple and noise levels even further. The pumps will work to peak pressures up to 280 bar (4060 psi) and careful attention to inlet porting enables most pumps to run at up to 3000 rev/min.

Full Specifications Button

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Model

Displacement
cm3/rev
(cu.in/rev)
Rated Pressure
bar
(psi)
Peak Pressure
bar
(psi)
R4016 16
(0.975)
250
(3625)
280
(4060)
R4019 19
(1.158)
250
(3625)
280
(4060)
R4023 23
(1.402)
250
(3625)
280
(4060)
R4027 27
(1.646)
250
(3625)
280
(4060)
R4032 32
(1.951)
250
(3625)
280
(4060)
R4038 38
(2.317)
250
(3625)
280
(4060)
R4045 45
(2.746)
250
(3625)
280
(4060)
R4053 53
(3.230)
210
(3045)
235
(3408)
R4060 60
(3.660)
180
(2610)
200
(2900)
R5045 45
(2.746)
250
(3625)
280
(4060)
R5053 53
(3.231)
250
(3625)
280
(4060)
R5063 63
(3.841)
250
(3625)
280
(4060)
R5073 73
(4.451)
250
(3625)
280
(4060)
R5100 100
(6.098)
210
(3045)
235
(3408)
R5120 120
(7.317)
180
(2610)
200
(2900)
R6100 100
(6.098)
250
(3625)
280
(4060)
R6117 117
(8.354)
250
(3625)
280
(4060)
R6137 137
(8.354)
250
(3625)
280
(4060)
R6160 160
(9.756)
250
(3625)
280
(4060)
R6187 187
(11.402)
210
(3045)
235
(3408)
R6220 220
(13.415)
180
(2610)
200
(2900)