• 4 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable
    Regular price £355.63
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    4 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Functions: 4 on ; off pushbuttons
    • Supply: 12 ; 24 VDC receiver
    • Harness: 2.4 m prewired receiver lead
    • Use case: simple on ; off control of one or two double acting functions
    • Form factor: handheld transmitter with compact receiver
    • Applications: tippers ; winches ; auxiliary hydraulic functions
    Regular price £355.63
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 12 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m cable
    Regular price £1,358.09
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    12 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m cable

    Key Features

    • Functions: 12 on ; off pushbuttons plus dedicated emergency stop
    • Supply: 12 ; 24 VDC receiver input prewired with 2.4 m cable
    • Use case: retrofit on ; off control of hydraulic valves or contactor logic
    • Form factor: handheld transmitter with paired receiver for mobile machinery
    • Safety: E stop provides immediate shutdown signal to system interlock
    • Frequency: industrial license free bands with robust interference mitigation
    Regular price £1,358.09
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  • Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (10 kW Max) with Group 2 Pump
    Regular price £225.66
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    Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (10 kW Max) with Group 2 Pump

    Key Features

    • Gear ratio: 3 ; 1 step up
    • Power rating: 10 kW maximum
    • Input/output: 540 rpm PTO nominal to ~1620 rpm output
    • Shafts: male 1 3/8 inch 6T PTO input
    • Pump interface: Group 2 pump fitted ; suited to lower flow auxiliary circuits
    • Housing: aluminium body ; compact size for light implements
    Regular price £225.66
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    • Order by 3pm for Next Day Delivery
  • Aluminium Hydraulic Female Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 3 Pump - Approved Hydraulics Limited
    Regular price £382.30
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    Aluminium Hydraulic Female Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 3 Pump

    Key Features

    • Gear ratio: 3 ; 1 speed increase
    • Power rating: 20 kW
    • Input coupling: female quick coupling PTO 1 3/8 inch 6 spline standard
    • Pump interface: supplied with Group 3 gear pump for higher displacement
    • Recommended limits: keep gearbox output below 3000 rpm per common PTO gearbox guidance
    • Construction: aluminium gearbox for low mass on 3 point link implements
    Regular price £382.30
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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.

  • Aluminium Hydraulic Female AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 2 Pump - Approved Hydraulics Limited
    Regular price From £294.06
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Aluminium Hydraulic Female AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 2 Pump

    Key Features

    • Gear ratio: 3 ; 1 PTO speed increase
    • Power rating: 20 kW maximum
    • Input coupling: female quick fit PTO 1 3/8 inch 6T per DIN 9611
    • Pump interface: pre fitted Group 2 gear pump
    • Use case: driving auxiliary hydraulics from tractor PTO circuits
    • Orientation: aluminium housing allows multiple mounting positions
    Regular price From £294.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 3 Pump
    Regular price From £403.26
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    • Delivery to UK & Ireland

    Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 3 Pump

    Key Features

    • Gear ratio: 3 ; 1 step up for pump speed
    • Power rating: 20 kW maximum
    • Input/output: 540 rpm PTO nominal to ~1620 rpm output ; observe 3000 rpm max output guidance
    • Shafts: male PTO 1 3/8 inch 6 spline interface
    • Pump interface: supplied with Group 3 gear pump for higher flow demand
    • Construction: lightweight aluminium gearbox for agricultural PTO duty
    Regular price From £403.26
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 2 Pump
    Regular price £282.06
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 2 Pump

    Key Features

    • Gear ratio: 3 ; 1 speed increase from PTO to pump
    • Power rating: 20 kW max continuous service
    • Input/output: PTO 540 rpm nominal ; gearbox output up to 1620 rpm with limit below 3000 rpm
    • Shafts: male PTO input 1 3/8 inch 6T ; mates to agricultural tractors
    • Pump interface: supplied with Group 2 gear pump pre fitted
    • Housing: aluminium body for reduced weight in mobile applications
    Regular price £282.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Femac Variseal Hydraulic Motor Shaft Seal  For T1/T3/T5 8cc-11cc-16cc
    Regular price £78.06
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    Femac Variseal Hydraulic Motor Shaft Seal For T1/T3/T5 8cc-11cc-16cc

    Key Features

    • Seal type: spring-energized ptfe variseal
    • Motor sizes: 8 cc ; 11 cc ; 16 cc gear motors
    • Typical shaft size: 18 mm id for group 2 motors
    • Mates with: 18x30 back-up washer
    • Use: low-friction sealing for continuous-duty flail motors
    Regular price £78.06
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  • Complete Cylinder for Intermercato TG16 PRO-S/SR4/SR5/SRX5 Grab
    Regular price £640.86
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    • Delivery to UK & Ireland

    Complete Cylinder for Intermercato TG16 PRO-S/SR4/SR5/SRX5 Grab

    Key Features

    • Type: complete double acting hydraulic cylinder assembly
    • Compatibility: factory replacement for listed TG or GRX models
    • Seals: high pressure rod and piston seals with wiper installed
    • Ports: BSPP per OEM specification
    • Testing: pressure tested for leakage and function
    • Use: restores lifting and clamping performance
    Regular price £640.86
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Complete Cylinder for Intermercator TG25PROS/Sr4/SR5 Grab
    Regular price £924.06
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    • Delivery to UK & Ireland

    Complete Cylinder for Intermercator TG25PROS/Sr4/SR5 Grab

    Key Features

    • Type: complete double acting hydraulic cylinder assembly
    • Compatibility: factory replacement for listed TG or GRX models
    • Seals: high pressure rod and piston seals with wiper installed
    • Ports: BSPP per OEM specification
    • Testing: pressure tested for leakage and function
    • Use: restores lifting and clamping performance
    Regular price £924.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Complete Cylinde for Intermercato TG 55 S/SR4/SR5/SM/80 Grab -  Part book item No.17
    Regular price £1,879.26
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    Complete Cylinde for Intermercato TG 55 S/SR4/SR5/SM/80 Grab - Part book item No.17

    Key Features

    • Compatibility: tg 55 s ; sr4 ; sr5 ; sm ; 80 grabs
    • Assembly: factory complete cylinder
    • Sealing: double piston rod seals
    • Use: oem replacement per parts book item 17
    • Application: hydraulic attachment component
    Regular price £1,879.26
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    • Order by 3pm for Next Day Delivery
  • Complete Cylinder for Intermercato TG 42S, SR4, SM - Part book item No.10
    Regular price £1,390.86
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    Complete Cylinder for Intermercato TG 42S, SR4, SM - Part book item No.10

    Key Features

    • Type: complete double acting hydraulic cylinder assembly
    • Compatibility: factory replacement for listed TG or GRX models
    • Seals: high pressure rod and piston seals with wiper installed
    • Ports: BSPP per OEM specification
    • Testing: pressure tested for leakage and function
    • Use: restores lifting and clamping performance
    Regular price £1,390.86
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Complete Cylinder for Intermercato GRX25 Grab- Part book item No.9
    Regular price £750.06
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    • Delivery to UK & Ireland

    Complete Cylinder for Intermercato GRX25 Grab- Part book item No.9

    Key Features

    • Type: complete double acting hydraulic cylinder assembly
    • Compatibility: factory replacement for listed TG or GRX models
    • Seals: high pressure rod and piston seals with wiper installed
    • Ports: BSPP per OEM specification
    • Testing: pressure tested for leakage and function
    • Use: restores lifting and clamping performance
    Regular price £750.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £167.05
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    Cylinder Seal Kit For DAP8040 cylinder (CEL Cyls Models Only)

    Key Features

    • Compatibility: DAP8040 pattern cylinder used on CEL cylinder models only
    • Bore x rod class: 80 x 40 mm nominal geometry per 8040 designation
    • Intended use: complete reseal to address external leaks ; bypass and drift
    • Typical kit contents: piston seal ; rod seal ; wiper ; and static seals commonly used
    • Applications: general purpose rams on attachments and agricultural machinery
    • Fitment note: verify CEL cylinder label before ordering to ensure correct kit series
    Regular price £167.05
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £31.21
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    • Delivery to UK & Ireland

    Seal Kit For Hydra Part MR Motor (Zi)

    Key Features

    • Compatibility: Hydra Part MR high torque orbital motors ; Zi pattern
    • Intended use: seal replacement for motor front end and housing to stop oil leakage
    • Typical kit contents: shaft seal ; housing o rings ; drain and port seals typical for MR motors
    • Applications: industrial and mobile hydraulic drives across compact machinery
    • Service note: check case drain port condition ; replace washers if distorted
    • Selection note: use motor nameplate to match the correct MR kit variant
    Regular price £31.21
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £37.60
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    • Delivery to UK & Ireland

    Seal Kit For Hydra Part MT Motor (Zi)

    Key Features

    • Compatibility: Hydra Part MT orbital motors ; Zi pattern
    • Intended use: renew shaft ; cover and case seals to correct oil leaks and pressure loss
    • Typical kit contents: output shaft seal ; body o rings ; port and drain seals used on MT motors
    • Applications: low speed high torque drives on conveyors ; wheel motors ; winches
    • Service note: inspect shaft for wear ; replace if grooved to protect new seal
    • Fitment check: confirm MT model code and mounting to select correct kit
    Regular price £37.60
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £42.37
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    Seal Kit For Hydra Part MSY Motor (Zi)

    Key Features

    • Compatibility: Hydra Part MSY series disc valve orbital motors ; Zi pattern
    • Motor notes: MSY motors use disc valve distribution offering higher torque capability in family
    • Intended use: seal replacement for output shaft ; cover and porting to resolve leaks
    • Typical kit contents: shaft seal ; housing o rings ; drain port seals commonly replaced on service
    • Applications: industrial and mobile drives requiring rugged low speed high torque performance
    • Selection note: check MSY displacement code and mounting to select correct kit
    Regular price £42.37
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £41.92
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    • Delivery to UK & Ireland

    Hydra Part MV Motor Seal Kit (Zi)

    Key Features

    • Compatibility: Hydra Part MV high torque orbital motors ; Zi pattern
    • Intended use: renew housing ; shaft and cover seals to prevent oil leakage and pressure loss
    • Typical kit contents: shaft seal ; case drain and port seals ; body o rings used on MV motors
    • Applications: drive motors on conveyors ; winches ; swing drives and attachments
    • Service note: inspect shaft surface finish ; replace or sleeve if worn to protect new seal
    • Fitment check: confirm MV motor code on nameplate to match kit version
    Regular price £41.92
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £31.36
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    • Delivery to UK & Ireland

    Rotator Seal Kit For Intermercato IVR3 & IVR3FS

    Key Features

    • Type: OEM rotator seal kit
    • Compatibility: model stated in title
    • Contents: rod seals ; piston seals ; O rings ; wear rings
    • Media: mineral hydraulic oil service
    • Use: restore leak tightness and rotational performance
    Regular price £31.36
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £173.06
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    • Delivery to UK & Ireland

    Cylinder Seal kit TG42S,, SR4, SR5, T-Cut18

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £173.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £56.15
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    • Delivery to UK & Ireland

    Seal kit For Intermercato Rotary Svivel Joint Type RJ-2

    Key Features

    • Use case: Replacement seal set for maintenance of swivel/rotary joint
    • Notes: Specification information is limited in source listing; confirm dimensions and compatibility before purchase
    • Notes: Details not stated
    • Notes: Details not stated
    • Notes: Details not stated
    Regular price £56.15
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £172.86
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    • Delivery to UK & Ireland

    Cylinder Seal Kit For Intermercato Tigercut 210E/ T-Cut25 / TG 55 S/80 S/TC 210

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £172.86
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £142.48
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    • Delivery to UK & Ireland

    Cylinder Seal Kit For Intermercato TC300 - TG 120 - 150S

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £142.48
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £189.73
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    • Delivery to UK & Ireland

    Hultdins Super Saw SS550-10/90 Hydraulic Cylinder Seal Kit. 121069 - 212290-R

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £189.73
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

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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.