• ABER B2 Gear Pumps
    Regular price From £239.36
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    ABER B2 Gear Pumps

    Key Features

    • Displacement: ~8–39 cm³/rev
    • Max pressure: up to 250–300 bar (model dependent)
    • Mount: UNI 3-bolt (European standard)
    • Rotation: CW or CCW (bi-rotational options)
    • Shaft: 6-spline
    • Ports: BSP threaded (3/4"–1")
    • Application: light/medium-duty mobile hydraulics
    Regular price From £239.36
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    • Order by 3pm for Next Day Delivery
  • ABER B3 Gear Pumps
    Regular price From £307.48
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    ABER B3 Gear Pumps

    Key Features

    • Displacement: ~42–102 cm³/rev
    • Max pressure: up to ~300 bar
    • Mount: ISO 4-bolt (pump PTO interface)
    • Shaft: 8-tooth spline
    • Rotation: CW/CCW options
    • Ports: BSP threaded (1"–1 1/4")
    • Application: high-flow truck hydraulics (tippers, cranes)
    Regular price From £307.48
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  • Hydra Part HP-GP20 Power Take Off Gear Pumps - Approved Hydraulics
    Regular price From £165.53
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    GP20 Power Take Off Gear Pumps

    Key Features

    • Use case: PTO driven hydraulic gear pump for mobile hydraulics; tipping; cranes; auxiliaries
    • Pump type: Hydraulic pump; see title for series and configuration
    • Notes: Specification information is limited in source listing; confirm dimensions and compatibility before purchase
    • Notes: Details not stated
    • Notes: Details not stated
    Regular price From £165.53
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  • Hydra Part HP-GP30 Power Take Off Gear Pumps - Approved Hydraulics
    Regular price From £204.00
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    GP30 Power Take Off Gear Pumps

    Key Features

    • Use case: PTO driven hydraulic gear pump for mobile hydraulics; tipping; cranes; auxiliaries
    • Pump type: Hydraulic pump; see title for series and configuration
    • Notes: Specification information is limited in source listing; confirm dimensions and compatibility before purchase
    • Notes: Details not stated
    • Notes: Details not stated
    Regular price From £204.00
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    • 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.

  • Hydra Part HP-GP30 Side & Rear Ported PTO Gear Pumps (82cc) - Approved Hydraulics
    Regular price From £232.43
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    GP30 Side & Rear Ported PTO Gear Pumps

    Key Features

    • Pump type: external gear ; pto
    • Design: bi rotational
    • Ports: side ; rear port options
    • Construction: 2 piece body ; high quality alloys
    • Use: truck pto systems ; high duty cycles
    Regular price From £232.43
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  • GP40 87cc Group 4 Gear Pump ISO With Rear + Side Ports - Bi-Directional With 250 Bar Continuous Operating Pressure
    Regular price £277.56
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    GP40 87cc Group 4 Gear Pump ISO With Rear + Side Ports - Bi-Directional With 250 Bar Continuous Operating Pressure

    Key Features

    • Displacement: 87 cm3.rev (Group 4)
    • Ports: rear and side inlet ; ISO pattern
    • Rotation: bi directional build available
    • Continuous pressure: ~220–250 bar class depending on model
    • Speed range: up to ~1700–3000 rpm model dependent
    • Mounting: PTO friendly ; ISO 4 bolt flange
    • Typical use: truck PTO hydraulics ; tippers ; winches
    Regular price £277.56
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

PTO Gear Pumps

Discover a fantastic range of PTO gear pumps online at Approved Hydraulics, home to all you need to optimise your hydraulic system’s performance. With a PTO gearbox hydraulic pump from us, you’re investing in a high-quality and durable component that will perform for years to come. For related products, browse our full selection of PTO equipment.

We primarily use PTO gear pumps in agricultural and commercial equipment, namely trucks, tractors, and large vehicles. Including a PTO gearbox hydraulic pump is recommended when you need additional hydraulic power, which the standard system cannot provide.

Our PTO gear pumps are built to work with PTO units that run less than or up to a max of 250 BAR. The standard pump comes built with ISO 4 bolt flange and eight spline shafts that you can easily convert to the older style UNI 3 bolt flange with our HP-AU43SF1 conversion kit.

Here at Approved Hydraulics, you’ll find a superb selection of PTO gear pumps. Manufactured by industry-leaders ABER & Hydra Part, you can be safe in the knowledge that you’re investing in a product that has enjoyed painstaking research and features premium quality materials.

Not only does this mean that your hydraulic system will achieve the best possible performance, but it’ll continue to do so for many years. For more performance-boosting components, check out our full range of PTO and standard hydraulic equipment.

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.