• Aber Hydraulic Piston Pumps Bic | Compact Bent Axis Piston Pump - 17cm3/Rev. To 110cm3/Rev. - Approved Hydraulics Limited
    Regular price From £622.44
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    Aber Hydraulic Piston Pumps Bic | Compact Bent Axis Piston Pump - 17cm3/Rev. To 110cm3/Rev.

    Key Features

    • Displacement range: 7–110 cm³/rev
    • Max operating pressure: 400 bar
    • Rotation: reversible (CW/CCW options)
    • Flange/shaft: 4-bolt, spline (DIN 5462 style)
    • Typical use: tippers, cranes, high-pressure mobile hydraulics
    Regular price From £622.44
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ABER BENT AXIS PISTON PUMP 140cc/rot - Approved Hydraulics Limited
    Regular price £1,319.62
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    ABER BENT AXIS PISTON PUMP 140cc/rot

    Key Features

    • Series: BI (bent axis piston, fixed displacement)
    • Displacement: 140 cc/rot
    • Max working pressure: up to 350 bar
    • Performance: high efficiency with very low noise
    • Flow characteristics: continuous, low pulsation
    • Mounting: direct PTO mount (except two‑shaft PTOs without support)
    • Typical applications: tippers, cranes, mobile hydraulics
    Regular price £1,319.62
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ABER Bent Axis Piston Pumps - Approved Hydraulics Limited
    Regular price From £572.78
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    • Delivery to UK & Ireland

    ABER Bent Axis Piston Pumps

    Key Features

    • Displacement range: ~17–172 cm³/rev (series dependent)
    • Max working pressure: up to 350 bar (400 bar peak)
    • Efficiency/noise: high volumetric efficiency; low noise
    • Rotation: reversible (CW/CCW options)
    • Mounting: PTO direct-mount for truck hydraulics
    • Flange/shaft: 4-bolt, 8-tooth spline (DIN 5482 style)
    • Typical use: tippers, cranes, high-pressure mobile hydraulics
    • Lubrication: case drain required
    Regular price From £572.78
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydra Part Bent Axis DIN Piston Pumps (34-130cc) - Approved Hydraulics
    Regular price From £620.34
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    Hydra Part Bent Axis DIN Piston Pumps (34-130cc)

    Key Features

    • Type: bent axis piston pump
    • Mounting: din interface
    • Displacements: 34 to 130 cc options
    • Characteristics: high efficiency ; high pressure capability
    • Use: mobile ; industrial circuits
    Regular price From £620.34
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Team Member

    Adam Hindle

    Sales Director

    I began my engineering career at Stockport College in around 2005, first completing a National Diploma in Electrical Engineering, followed by a Higher National Diploma in Mechanical Engineering. I then progressed to the University of Salford, where I earned a BEng (Hons) degree in Mechanical Engineering.

    After graduating, I started my professional career with Approved Hydraulics. I initially gained a combination of hands-on workshop experience and telephone-based sales experience. In later years, I moved into a full-time sales role and led the new crane and excavator attachments department that the company had recently established.

  • ABER VARIABLE DISPLACEMENT PUMP 90cc/rot- Right
    Regular price £2,255.47
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    • Delivery to UK & Ireland

    ABER VARIABLE DISPLACEMENT PUMP 90cc/rot- Right

    Key Features

    • Series: VDP (variable displacement axial piston)
    • Displacement: 90 cc/rot
    • Rotation: right-hand
    • Max application pressure: up to 460 bar
    • Flange/shaft options: DIN 5462 / DIN 5480 / SAE C (2- or 4-bolt)
    • Key functions: adaptable pressure, fast reaction, flow reset
    • Design: high efficiency, low noise, compact
    • Use: truck/mobile hydraulic systems
    Regular price £2,255.47
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • ABER Variable Displacement Piston Pump 120cc/rot- Right - Approved Hydraulics Limited
    Regular price £2,620.85
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    • Delivery to UK & Ireland

    ABER Variable Displacement Piston Pump 120cc/rot- Right

    Key Features

    • Series: ABER VDP variable displacement axial piston pump
    • Displacement: 120 cc/rotation
    • Rotation: right‑hand (clockwise at shaft view)
    • Max pressure: up to ~410–460 bar (series dependent)
    • Mounting: direct PTO mount (except two‑shaft PTOs without support)
    • Controls/features: adaptable pressure, fast reaction, flow reset
    • Flange/shaft options: DIN 5462 / DIN 5480 / SAE C (2‑ or 4‑bolt)
    • Use: open‑circuit truck hydraulics (tippers, cranes)
    Regular price £2,620.85
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Piston Pumps for Professional Hydraulic Applications

Discover quality piston pumps from Approved Hydraulics, trusted by professionals across construction, transport, forestry, agriculture and industrial sectors. Built for demanding working environments, our range offers dependable performance, durable construction and trusted reliability. Browse related products including aber pump spares to find the right solution for your hydraulic system. With fast UK delivery and expert technical support, Approved Hydraulics supplies hydraulic equipment you can rely on.

Common Calculations FAQs

Calculating force, speed, pressure, power, and efficiency in hydraulic applications.

How do you calculate actuator speed?

Actuator speed is determined by flow rate and cross-sectional area:

Speed = Flow rate ÷ Area

Flow rate is the volume of fluid delivered (in L/min or GPM).

Area is the cross-sectional area of the actuator piston: π × (diameter ÷ 2)².

How do you calculate cylinder force?

Cylinder force can be calculated using:

Force = Pressure × Area

Pressure is the system pressure (in psi or bar).

Area is the cross-sectional area of the cylinder bore (in square inches or square centimeters).

Area = π × (bore diameter ÷ 2)².

How do you calculate pressure drop across a valve?

Pressure drop can be calculated using the valve flow coefficient (Cv):

Pressure Drop (ΔP) = (Flow Rate)² ÷ (Cv² × Fluid Density)

Flow Rate is the fluid flow (in GPM or L/min).

Cv is the valve flow coefficient.

Fluid Density is the density of the hydraulic fluid.

How do you size an accumulator?

Accumulator sizing considers required flow, pressure, and pre-charge:

Accumulator Volume = Flow Rate × Time ÷ Pressure

This determines how much fluid must be stored to maintain system pressure.

How to convert psi to bar?

Use the conversion factor: 1 bar = 14.5 psi.

To convert psi to bar, divide psi by 14.5.

Example: 200 psi ÷ 14.5 = 13.79 bar.

What is pre-charge pressure in an accumulator?

Pre-charge pressure is the initial gas pressure in the accumulator before fluid enters.

It helps maintain system pressure as the accumulator discharges.

Typically set to 70–80% of system operating pressure.

What is specific gravity of hydraulic fluid?

Specific gravity is the ratio of hydraulic fluid density to water.

A value of 1 means equal density.

Less than 1 means the fluid floats; greater than 1 means it sinks.

What is torque in a hydraulic motor?

Torque is the rotational force produced based on system pressure and motor displacement:

Torque = Pressure × Displacement ÷ 2π

Pressure is the operating system pressure.

Displacement is the volume displaced per revolution (in cubic inches or cubic centimeters).

What unit is hydraulic power measured in?

Hydraulic power is measured in horsepower (HP) or kilowatts (kW).

Hydraulic horsepower can be calculated using:

HP = (Pressure (psi) × Flow rate (GPM)) ÷ 1714.

What’s the relationship between pump speed and flow?

Flow rate is directly proportional to pump speed.

If pump speed doubles, flow rate doubles (assuming constant displacement).

This is important when adjusting flow or selecting a pump for varying speeds.