• SEAL KIT FOR GEAR PUMPS - BI-DIRECTIONAL - Approved Hydraulics Limited
    Regular price £17.49 Ex VAT £20.99 Inc VAT
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    SEAL KIT FOR GEAR PUMPS - BI-DIRECTIONAL

    Key Features

    • Application: ABER bi‑directional external gear pumps (e.g., B3 series)
    • Function: replaces primary seals to stop leakage under pressure
    • Benefit: restores pump efficiency and service life
    • Contents: sealing elements sized for ABER bi‑rotational pumps
    • Use: maintenance/service of truck hydraulic pumps
    Regular price £17.49 Ex VAT £20.99 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Gasket - TF3010V - JUNTA ISUZU MZZ - Approved Hydraulics Limited
    Regular price £5.31 Ex VAT £6.38 Inc VAT
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    Gasket - TF3010V - JUNTA ISUZU MZZ

    Key Features

    • Compatibility: ABER TF3010V PTO (Isuzu MZZ-6F/6R/6S; MOZ-53)
    • Variant: TF3010V corresponds to vacuum-control version
    • Function: PTO-to-gearbox sealing gasket
    • Purpose: prevents oil leakage and maintains system pressure
    • Service note: replace on every PTO install or service
    • ABER reference: CCJUN23 (gasket code)
    Regular price £5.31 Ex VAT £6.38 Inc VAT
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  • TRIANGULAR GASKET 3 HOLES - Approved Hydraulics Limited
    Regular price £2.21 Ex VAT £2.66 Inc VAT
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    TRIANGULAR GASKET 3 HOLES

    Key Features

    • Shape: triangular gasket
    • Holes: 3-hole pattern
    • Function: seals mating faces in hydraulic assemblies
    • Use: ABER pump spares / connectors
    • Service note: replace during maintenance to ensure seal integrity
    Regular price £2.21 Ex VAT £2.66 Inc VAT
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  • Out of Stock
    Scanreco Battery Charger 10-30V DC type 434 with flying leads - Approved Hydraulics Limited
    Regular price £215.59 Ex VAT £258.71 Inc VAT
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    Scanreco Battery Charger 10-30V DC type 434 with flying leads

    Key Features

    • Input: Vehicle connect
    • Battery type: g2 nimh 7.2 v
    • Compatibility: scanreco mini ; maxi transmitters
    • Mounting: on machine ; rugged
    Regular price £215.59 Ex VAT £258.71 Inc VAT
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  • 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.

  • Zanetti Magneti Hydraulic Electromagnets - Approved Hydraulics Limited

    POA

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    Zanetti Magneti Hydraulic Electromagnets

    Key Features

    • No additional power supply: power is supplied directly through the hydraulic connection
    • Flexibility and adaptability: easily adaptable to different machines, such as excavators and hydraulic loaders
    • Durability and build quality: designed for intensive use and demanding conditions, they ensure long-lasting performance. The use of wear-resistant materials in strategic positions enhances the electromagnet’s lifespan
    • Extra fast demagnetisation: no downtime on site
    • Flow control valve: this special valve ensures the hydraulic motor always receives the correct amount of oil, even during sudden peaks, preventing electrical failures
    • Magnetic plate machined from a solid block: maximum magnetic efficiency
    • Possibility of 360-degree rotation: useful for precise positioning of sheets or long beams
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • 4 Button Pendant Control With 4 Mt Cable For 2 x Double Acting Valve Units - Approved Hydraulics Limited
    Regular price £36.00 Ex VAT £43.20 Inc VAT
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    4 Button Pendant Control With 4 Mt Cable For 2 x Double Acting Valve Units

    Key Features

    • Functions: 4 on ; off pushbuttons
    • Supply: 12 ; 24 VDC
    • Harness: 4m prewired lead
    • Use case: simple on ; off control of one or two double acting functions
    • Applications: tippers ; winches ; auxiliary hydraulic functions
    Regular price £36.00 Ex VAT £43.20 Inc VAT
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  • Aber Hydraulic Piston Pumps Bic | Compact Bent Axis Piston Pump - 17cm3/Rev. To 110cm3/Rev. - Approved Hydraulics Limited
    Regular price From £518.70 Ex VAT From £622.44 Inc VAT
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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 £518.70 Ex VAT From £622.44 Inc VAT
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  • Hydra Part Stabiliser Pad Cages - Approved Hydraulics
    Regular price From £110.76 Ex VAT From £132.92 Inc VAT
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    Stabiliser Pad Cages - Special Price (Sub Standard Quality)

    Key Features

    • Size range: 300 x 300 to 400 x 400mm pads
    • Capacity: stores 2 stabiliser pads
    • Security: padlock ; chain included
    • Use: stowage for stabiliser pads in transit ; onsite
    • Fitment: sized to match pad dimensions
    Regular price From £110.76 Ex VAT From £132.92 Inc VAT
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  • Hydra Part WD Worm Drive Kits - Approved Hydraulics Limited
    Regular price £1,387.50 Ex VAT £1,665.00 Inc VAT
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    Hydra Part WD Worm Drive Kits

    Key Features

    • Compatibility: WD7, WD9, WD12, WD17, WD21
    • Included: Worm and all associated components
    Regular price £1,387.50 Ex VAT £1,665.00 Inc VAT
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  • Adapter Kit for 45L Hydra Part Proportional Module - Approved Hydraulics Limited
    Regular price £89.48 Ex VAT £107.38 Inc VAT
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    Adapter Kit for 45L Hydra Part Proportional Module

    Key Features

    • Type: adapter kit for 45l hydra part proportional module
    • Compatibility: hydra part 45l and walvoil sd5 valve families
    • Contents: hydraulic adaptors ; fittings and washers
    • Function: plumbing kit for retrofit servo module pilot and return
    • Use: convert manual valve to proportional remote control
    Regular price £89.48 Ex VAT £107.38 Inc VAT
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  • 12VDC Proportional Solenoid PWM For Scanreco Mod10  Actuator Valve 14mm Dia Hole x 39mm Long - Approved Hydraulics Limited
    Regular price £32.18 Ex VAT £38.62 Inc VAT
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    12VDC Proportional Solenoid PWM For Scanreco Mod10 Actuator Valve 14mm Dia Hole x 39mm Long

    Key Features

    • Voltage: 12 vdc
    • Control: pwm proportional
    • For: scanreco mod10 actuator valve
    • Core size: 14 mm id x 39 mm long
    • Application: hydraulic attachment component
    Regular price £32.18 Ex VAT £38.62 Inc VAT
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  • Tie rod - M8 x 212 for mounting 5 proportional modules - Approved Hydraulics Limited
    Regular price £10.01 Ex VAT £12.02 Inc VAT
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    Tie rod - M8 x 212 for mounting 5 proportional modules

    Key Features

    • Type: m8 tie rod for proportional module stack
    • Length: 212 mm for mounting up to 5 modules
    • Material: steel rod with threaded ends
    • Function: preload clamping and alignment of stack
    • Use: secure servo modules on base block
    Regular price £10.01 Ex VAT £12.02 Inc VAT
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  • Tie rod - M8 x 248 for mounting 6 proportional modules - Approved Hydraulics Limited
    Regular price £11.51 Ex VAT £13.82 Inc VAT
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    Tie rod - M8 x 248 for mounting 6 proportional modules

    Key Features

    • Type: m8 tie rod for proportional module stack
    • Length: 248 mm for mounting up to 6 modules
    • Material: steel rod with threaded ends
    • Function: preload clamping and alignment of stack
    • Use: secure servo modules on base block
    Regular price £11.51 Ex VAT £13.82 Inc VAT
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  • 12V Elec/Air Solenoid Coil for 8EP3 -4 kit 3W IP65 100% ED - Coil 9mm hole x 30mm Long C/w with Flying Leads Connection
    Regular price £15.10 Ex VAT £18.13 Inc VAT
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    12V Elec/Air Solenoid Coil for 8EP3 -4 kit 3W IP65 100% ED - Coil 9mm hole x 30mm Long C/w with Flying Leads Connection

    Key Features

    • Voltage: 12 vdc
    • Power: 3 w
    • Hole: 9 mm through-bore
    • Body length: 30 mm
    • Ingress: ip65
    • Duty: 100% ed
    • Connection: flying leads
    • Use: 8ep3 ; 8ep4 electro pneumatic kits
    Regular price £15.10 Ex VAT £18.13 Inc VAT
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    • Order by 3pm for Next Day Delivery
  • Hydra Part PTO Gear Box 3:1 ratio for Group 2 Pumps - Male Shaft - Approved Hydraulics
    Regular price From £4.40 Ex VAT From £5.29 Inc VAT
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    Splined Drive Coupling for Agricultural PTOs

    Key Features

    • Use: mate pto gearbox to gear pump
    • Options: grp 2 ; grp 3 pump variants
    • Spline: pto standards per option
    • Mounting: bolts to gearbox flange
    • Application: hydraulic system component
    Regular price From £4.40 Ex VAT From £5.29 Inc VAT
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  • Agri PTO Gear Box 3:1 Ratio For GP2 pump - QR Female Connection (Max 10 kW) - Approved Hydraulics Limited
    Regular price From £149.65 Ex VAT From £179.58 Inc VAT
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    Agri PTO Gear Box 3:1 Ratio For GP2 pump - QR Female Connection (Max 10 kW)

    Key Features

    • Ratio: 3.1 overgear
    • Pump group: group 2
    • Input: tractor pto 540 rpm
    • Output: pump speed ~1620 rpm
    • Max power: 10 kw
    • Connection: quick release female input
    • Lubrication: sae 90 oil recommended
    Regular price From £149.65 Ex VAT From £179.58 Inc VAT
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  • Return Pipe Vertical 320mm
    Regular price £1.33 Ex VAT £1.60 Inc VAT
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    Return Pipe Vertical 320mm

    Key Features

    • Orientation: vertical
    • Length: 320 mm
    • Connection: g 1/4 interface
    • Use: return oil from manifold to tank
    • Application: mini power pack
    Regular price £1.33 Ex VAT £1.60 Inc VAT
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  • 20cc Line Mounted Hand Pump C/w Release Valve and Handle
    Regular price £133.58 Ex VAT £160.30 Inc VAT
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    20cc Line Mounted Hand Pump C/w Release Valve and Handle

    Key Features

    • Displacement: 20 cc per stroke
    • Mounting: line mounted
    • Includes: release valve ; handle
    • Use: manual operation or emergency backup
    • Ports: inline pipe connections
    Regular price £133.58 Ex VAT £160.30 Inc VAT
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  • 1/8" BSPP Male Blank Plug with O-ring Seal - Approved Hydraulics Limited
    Regular price £4.73 Ex VAT £5.68 Inc VAT
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    1/8" BSPP Male Blank Plug with O-ring Seal

    Key Features

    • Thread: g 1/8 bspp
    • Seal: captured o ring face
    • Use: blank manifold ; valve ports
    • Material: steel ; zinc plated
    • Standard: bspp parallel thread
    Regular price £4.73 Ex VAT £5.68 Inc VAT
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  • Mini Pack Mounting Bracket / Foot - Approved Hydraulics Limited
    Regular price £9.19 Ex VAT £11.03 Inc VAT
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    Mini Pack Mounting Bracket / Foot

    Key Features

    • Function: foot bracket for mounting mini power pack
    • Material: steel
    • Use: secure pack to base ; chassis
    • Holes: pre drilled slots for fixings
    • Application: hydraulic system component
    Regular price £9.19 Ex VAT £11.03 Inc VAT
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  • Return pipe horizontal - Approved Hydraulics Limited
    Regular price £1.16 Ex VAT £1.40 Inc VAT
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    Return pipe horizontal

    Key Features

    • Orientation: horizontal
    • Function: return oil from cetop stack to tank
    • Connection: g 1/4 interface
    • Use: mini power pack tank
    • Note: select length to suit tank depth
    Regular price £1.16 Ex VAT £1.40 Inc VAT
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  • Plastic plug G1/4 - Approved Hydraulics Limited
    Regular price £1.33 Ex VAT £1.60 Inc VAT
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    Plastic plug G1/4

    Key Features

    • Thread: g 1/4 bspp
    • Type: plastic protective plug
    • Use: blank unused manifold ports
    • Install: finger fit ; remove before service
    • Application: hydraulic system component
    Regular price £1.33 Ex VAT £1.60 Inc VAT
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  • Coupling Screw For Mounting kit for frame 71-80 - 90-100/112 B14 AC motor - Approved Hydraulics Limited
    Regular price £0.95 Ex VAT £1.14 Inc VAT
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    Coupling Screw For Mounting kit for frame 71-80 - 90-100/112 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m6 x 8
    • Use: secures elastic drive element to semi couplings
    • Compatibility: frames 71 ; 80 ; 90 ; 100/112 b14
    • Note: apply thread lock per assembly guide
    Regular price £0.95 Ex VAT £1.14 Inc VAT
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  • Manifold Flange Assembly Screw For Mounting kit for frame 90 & 100/112 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.56 Ex VAT £1.88 Inc VAT
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    Manifold Flange Assembly Screw For Mounting kit for frame 90 & 100/112 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m8 x 30
    • Use: manifold flange to kit frames 90 ; 100/112 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.56 Ex VAT £1.88 Inc VAT
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Shop All Components for Professional Hydraulic Applications

Discover quality shop all components 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 control valves, line mounted valves 1, hydraulic cylinders, hydraulic pumps 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.