• Pairing plug for G4/G5-CAN code 48118 - Approved Hydraulics Limited
    Regular price £66.17
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    Pairing plug for G4/G5-CAN code 48118

    Key Features

    • Type: pairing plug for g4 ; g5 can receivers
    • Interface: m12 plug for can bus pairing port
    • Function: initiates transmitter to receiver pairing sequence
    • Part code: 48118 reference
    • Use: service tool for rc400 platforms during installation
    Regular price £66.17
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  • Tie rod - M8 x 288 for mounting 7 proportional modules 5mm - Approved Hydraulics Limited
    Regular price £18.42
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    Tie rod - M8 x 288 for mounting 7 proportional modules 5mm

    Key Features

    • Type: m8 tie rod for proportional module stack
    • Length: 288 mm
    • Capacity: for 7 modules
    • Function: preload clamping and alignment of stack
    • Use: secure servo modules on base block
    Regular price £18.42
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  • Out of Stock
    Scanreco transmitter G2B/G3 6 lever type 48669
    Regular price £1,872.79
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    Scanreco transmitter G2B/G3 6 lever type 48669

    Key Features

    • Type: G2B ; G3 transmitter with 6 linear levers
    • Housing: Maxi ergonomic enclosure
    • Radio: regional band per specification
    • Power: compatible with 593 battery cassette
    • Use: proportional control of multiple hydraulic functions
    Regular price £1,872.79
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  • 28 Bar Servo pressure reducer for IT128 blocks
    Regular price £156.84
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    28 Bar Servo pressure reducer for IT128 blocks

    Key Features

    • Type: servo pressure reducer for IT128 blocks
    • Set pressure: 28 bar class
    • Porting: internal pilot gallery with dedicated ports
    • Function: regulates pilot pressure to servo controlled valves
    • Use: stable proportional control in IT128 retrofit systems
    Regular price £156.84
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  • 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.

  • Scanreco Electronic Card (Motherboard) for RC400 G2B/G3 Maxi Transmitters With Linear Levers (4142)
    Regular price £1,027.43
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    Scanreco Electronic Card (Motherboard) for RC400 G2B/G3 Maxi Transmitters With Linear Levers (4142)

    Key Features

    • Type: main electronic board for RC400 G2B ; G3 Maxi transmitters
    • Board code: 4142 family for linear levers
    • Function: interfaces inputs ; RF ; power management
    • Interface: connectors for RF module ; keypad ; power
    • Use: service replacement for Maxi transmitters
    Regular price £1,027.43
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  • Wiring kit for RC400-6-DAN-DIN - Approved Hydraulics Limited
    Regular price £362.36
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    Wiring kit for RC400-6-DAN-DIN

    Key Features

    • Type: wiring interface kit for RC400 receiver
    • Interface: danfoss pvg32 ; din connector scheme
    • Includes: pre crimped connectors ; harness ; seals
    • Function: connect proportional outputs to valve bank
    • Use: install RC400 6 function system on PVG32 valves
    Regular price £362.36
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  • Out of Stock
    Scanreco cross joystick 3 axis for mini code 51612
    Regular price £727.06
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    Scanreco cross joystick 3 axis for mini code 51612

    Key Features

    • Type: 3 axis mini cross joystick for RC400
    • Sensing: hall effect proportional output
    • Axes: X ; Y ; Z with spring return
    • Mounting: compact module for Mini transmitters
    • Use: additional proportional control on one stick
    Regular price £727.06
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  • Scanreco cross joystick Hall for RC400 2 axis mini-joystick code 46847

    POA

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    Scanreco cross joystick Hall for RC400 2 axis mini-joystick code 46847

    Key Features

    • Type: 2 axis mini cross joystick for RC400
    • Sensing: hall effect proportional output
    • Return: spring centered X ; Y axes
    • Mounting: bottom connection for Mini ; Maxi panels
    • Use: fine control of proportional crane functions
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Parker / Sterling Proportional Pressure Regulator Cartridge Valve 1.9 LPM - 210 Bar
    Regular price £186.34
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    Parker / Sterling Proportional Pressure Regulator Cartridge Valve 1.9 LPM - 210 Bar

    Key Features

    • Type: proportional pressure reducing cartridge
    • Flow rating: 1.9 lpm nominal
    • Pressure: up to 210 bar maximum
    • Control: current driven coil via PWM driver
    • Use: pilot circuits ; proportional control of downstream pressure
    Regular price £186.34
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  • Scanreco Proportional Single Module PWM For MOD10 Servo Unit 12V Includes Mounting Bolts.
    Regular price £438.43
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    Scanreco Proportional Single Module PWM For MOD10 Servo Unit 12V Includes Mounting Bolts.

    Key Features

    • Type: proportional single module for MOD10 actuator block
    • Supply: 12 vdc
    • Control: PWM electromagnetic section with mechanical feedback
    • Mounting: bolts included for block assembly
    • Use: add one proportional function to manual valve bank
    Regular price £438.43
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  • Scanreco RC400 G2B With DIN Plug 12/24V With Maxi Transmitter Giving  8 Linear Levers Ratiometric - Danfoss PVG32 Proportional Output
    Regular price £4,122.35
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    Scanreco RC400 G2B With DIN Plug 12/24V With Maxi Transmitter Giving 8 Linear Levers Ratiometric - Danfoss PVG32 Proportional Output

    Key Features

    • Type: RC400 G2B proportional radio remote system
    • Transmitter: Maxi housing with 8 linear levers
    • Supply: 12 to 24 vdc system voltage
    • Output: ratiometric or PWM interface for PVG32 or similar
    • Receiver: G2B PWM ; voltage variants per application
    • Use: proportional control of hydraulic cranes and valves
    Regular price £4,122.35
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  • KETA 3 Way Priority Pressure Compensaed Flow Control Valve Cartridge - Approved Hydraulics Limited
    Regular price £62.35
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    KETA 3 Way Priority Pressure Compensaed Flow Control Valve Cartridge

    Key Features

    • Type: 3 way priority pressure compensated flow control cartridge
    • Operation: maintains constant controlled flow regardless of load
    • Bypass: reverse flow bypass via internal check path
    • Porting: LFR 10 3A cavity family
    • Use: priority feed for steering or auxiliary functions
    Regular price £62.35
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  • Walvoil SD5 - SD6 - SD8 & Hydra Part 45L - 50L & 80L Scanreco Proportional Servo Module Kits
    Regular price From £324.42
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    Walvoil SD5 - SD6 - SD8 & Hydra Part 45L - 50L & 80L Scanreco Proportional Servo Module Kits

    Key Features

    • Type: receiver control cable
    • Interface: multi pin connector
    • Length: as specified
    • Sheath: industrial grade jacket with strain relief
    • Use: connect RC400 receiver to power ; valves or IO
    Regular price From £324.42
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  • Scanreco Filter Housing with Element
    Regular price £98.64
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    Scanreco Filter Housing with Element

    Key Features

    • Type: filter housing with replaceable element
    • Function: protects servo or hydraulic circuit from contamination
    • Service: quick element replacement
    • Mounting: panel or chassis bracket per kit
    • Use: extend life of proportional modules and valves
    Regular price £98.64
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    • Order by 3pm for Next Day Delivery
  • Scanreco RC400 6 Function Radio Remote Control (G2B) - Approved Hydraulics
    Regular price £3,563.03
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    RC400 6 Function Radio Remote Control (G2B) 12vDC/24vDC

    Key Features

    • Type: RC400 G2B proportional radio remote system
    • Functions: 6 proportional functions
    • Supply: 12 to 24 vdc system voltage
    • Transmitter: Mini or Maxi housing per kit
    • Receiver: G2B PWM ; voltage outputs variants
    • Safety: emergency stop integrated
    • Use: proportional control of hydraulic valves
    Regular price £3,563.03
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  • Scanreco Retro Fit Radio Remote Control, 6 Functions - Approved Hydraulics
    Regular price £5,543.42
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    Retro Fit Radio Remote Control, 6 Functions

    Key Features

    • Type: retrofit radio remote control kit
    • Functions: 4 proportional functions standard
    • Compatibility: manual valve banks via servo modules
    • Supply: 12 to 24 vdc
    • Use: upgrade cranes or machines to proportional remote control
    Regular price £5,543.42
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  • Scanreco Retro Fit Radio Remote Control, 4 Functions - Approved Hydraulics
    Regular price £5,094.59
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    Retro Fit Radio Remote Control, 4 Functions

    Key Features

    • Type: retrofit radio remote control kit
    • Functions: 4 proportional functions standard
    • Compatibility: manual valve banks via servo modules
    • Supply: 12 to 24 vdc
    • Use: upgrade cranes or machines to proportional remote control
    Regular price £5,094.59
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    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  8.0 cc/r  Grp 1 pump
    Regular price £90.86
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    MINI Power Pack 8.0 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 8.0 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £90.86
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  • MINI Power Pack  7 cc/r  Grp 1 pump
    Regular price £90.86
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    MINI Power Pack 7 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 7 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £90.86
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  • MINI Power Pack  5.8 cc/r  Grp 1 pump
    Regular price £82.79
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    MINI Power Pack 5.8 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 5.8 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £82.79
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    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  4.8 cc/r  Grp 1 pump
    Regular price £82.79
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    MINI Power Pack 4.8 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 4.8 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £82.79
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    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  3.7 cc/r  Grp 1 pump
    Regular price £79.16
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    MINI Power Pack 3.7 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 3.7 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £79.16
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  • MINI Power Pack  2.1 cc/r  Grp 1 pump
    Regular price £75.28
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    MINI Power Pack 2.1 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 2.1 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £75.28
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    • Order by 3pm for Next Day Delivery
  • MINI Power Pack  1.6 cc/r  Grp 1 pump
    Regular price £102.65
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    MINI Power Pack 1.6 cc/r Grp 1 pump

    Key Features

    • Pump group: group 1 external gear pump
    • Displacement: 1.6 cc/rev
    • Rotation: ccw
    • Use: mini hydraulic power pack builds
    • Compatibility: b14 mounting kits ; group 1 couplings
    Regular price £102.65
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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.