• ABER VARIABLE DISPLACEMENT PUMP 120cc/rot- Right
    Regular price £2,496.04
    • All Items Guaranteed
    • Delivery to UK & Ireland

    ABER VARIABLE DISPLACEMENT 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 £2,496.04
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydra Part Group 1 Hydraulic Gear Pumps with 1:8 Taper Shaft - Approved Hydraulics
    Regular price From £75.44
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Group 1 Hydraulic Gear Pumps with 1:8 Taper Shaft (Threaded Ports)

    Key Features

    • Type: bi rotational external gear pump
    • Group: 1
    • Shaft: 1.8 taper
    • Configuration: single ; double ; triple options
    • Ports: threaded bsp options
    • Construction: cast iron end covers ; aluminium body
    • Applications: mobile hydraulics ; industrial power units
    Regular price From £75.44
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydra Part Group 2 Hydraulic Gear Pumps with 1:8 Taper Shaft & Flanged Body - Approved Hydraulics
    Regular price From £74.96
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Group 2 Hydraulic Gear Pumps with 1:8 Taper Shaft & Flanged Body

    Key Features

    • Type: bi rotational external gear pump
    • Group: 2
    • Shaft: 1.8 taper
    • Configuration: single ; double ; triple options
    • Ports: threaded bsp options
    • Construction: cast iron end covers ; aluminium body
    • Applications: mobile hydraulics ; industrial power units
    Regular price From £74.96
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Group 2 Hydraulic Gear Pumps with 1:8 Taper Shaft (Threaded Ports)
    Regular price £97.98
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Group 2 Hydraulic Gear Pumps with 1:8 Taper Shaft (Threaded Ports)

    Key Features

    • Pump group: Group 2 external gear pump
    • Body: Aluminium body with cast iron end plates
    • Shaft: 1/8 taper keyed
    • Flange: 4 bolt European mount
    • Ports: Inlet 1/2 inch BSPP ; outlet 3/8 inch BSPP typical
    • Displacement range: ≈4 to 30 cc/rev options
    • Continuous pressure: Up to ~250 bar depending on size
    Regular price £97.98
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 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.

  • Group 2 Gear Pump 14cc Clockwise Rot. 9 Spline Shaft With 50mm Spigo - 250 Bar Cont. Pressure - DIN 5482
    Regular price £162.06
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Group 2 Gear Pump 14cc Clockwise Rot. 9 Spline Shaft With 50mm Spigo - 250 Bar Cont. Pressure - DIN 5482

    Key Features

    • Pump series: Group 2 gear pump
    • Displacement: 14 cc.rev
    • Rotation: clockwise
    • Shaft: 9 tooth spline SAE J498 9T 16.32 DP
    • Ports: BSP threaded
    • Pressure class: up to 250–270 bar depending on model
    Regular price £162.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydra Part Group 3 Gear Pumps with 1:8 Taper Shaft - Approved Hydraulics
    Regular price From £189.94
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Group 3 Gear Pumps with 1:8 Taper Shaft

    Key Features

    • Pump group: Group 3 external gear pump
    • Body: Aluminium body with cast iron end plates
    • Shaft: 1/8 taper keyed
    • Flange: 4 bolt European mount
    • Porting: BSPP threaded or flanged depending on build
    • Displacement range: ≈22 to 90 cc/rev options
    • Continuous pressure: Up to ~250 bar ; speeds to ~3000 rpm
    Regular price From £189.94
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Group 3 Gear Pumps with 1:8 Taper Shaft (Threaded Ports)
    Regular price From £273.29
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Group 3 Gear Pumps with 1:8 Taper Shaft (Threaded Ports)

    Key Features

    • Type: bi rotational external gear pump
    • Group: 3
    • Shaft: 1.8 taper
    • Configuration: single ; double ; triple options
    • Ports: threaded bsp options
    • Construction: cast iron end covers ; aluminium body
    • Applications: mobile hydraulics ; industrial power units
    Regular price From £273.29
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Anti-Clockwise Group 2 Tandem Hydraulic Pumps - Front
    Regular price £176.28
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Anti-Clockwise Group 2 Tandem Hydraulic Pumps - Front

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive
    Regular price £176.28
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Clockwise Group 2 Tandem Hydraulic Pumps - Front
    Regular price £159.78
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Clockwise Group 2 Tandem Hydraulic Pumps - Front

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive
    Regular price £159.78
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Anti-clockwise Group 2 Tandem Hydraulic Pumps - Rear
    Regular price £167.04
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Anti-clockwise Group 2 Tandem Hydraulic Pumps - Rear

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive
    Regular price £167.04
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Clockwise Group 2 Tandem Hydraulic Pumps - Rear

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Clockwise Group 2 Tandem Hydraulic Pumps - Rear

    Key Features

    • Type: group 2 tandem external gear pump
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: clockwise
    • Mounting: 2 or 4 bolt flange per variant
    • Use: supply multiple circuits from one drive

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Clockwise Group 2 Tandem Pump 14cc Front + 14cc Rear 1:8 taper shaft with Flange Ports
    Regular price £372.30
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Clockwise Group 2 Tandem Pump 14cc Front + 14cc Rear 1:8 taper shaft with Flange Ports

    Key Features

    • Sections: tandem two stage ; 14 cc front ; 14 cc rear
    • Rotation: clockwise
    • Ports: typical suction 3/4" BSP ; pressure 1/2" BSP per stage
    • Shaft: 1.8 taper ; 4 bolt EU flange
    • Working pressures: P1 up to 200 bar ; P2 up to 160 bar
    • Speed: up to ~3500 rpm
    • Use: dual circuit mobile hydraulics ; steering ; implements
    Regular price £372.30
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Triple Gear Pump - Gp2 17cc - Gp1 3.3+3.3 - 1:8 taper
    Regular price £384.42
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Triple Gear Pump - Gp2 17cc - Gp1 3.3+3.3 - 1:8 taper

    Key Features

    • Displacement: 17 cc/rev
    • Euro flange with: 1/8 taper shaft
    • Max working pressure: 260 bar
    • Specification: BSP threaded ports
    • Displacement: 3.3 cc/rev
    • Max working pressure: 280 bar
    • Use case: PTO driven hydraulic gear pump for mobile hydraulics; tipping; cranes; auxiliaries
    Regular price £384.42
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Gear Pumps

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.