• Hydra-PART 90 Degree Tilting Unit For 8T-12T Excavators Machines Giving 9000 N/m Torque
    Regular price £4,560.06
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    Hydra-PART 90 Degree Tilting Unit For 8T-12T Excavators Machines Giving 9000 N/m Torque

    Key Features

    • Machine class: 8–12 t excavators
    • Tilt angle: ±45 deg ; 90 deg total
    • Output torque: 9000 N.m
    • Drive type: sealed rotary actuator
    • Hydraulics: suitable for two line control ; check flow ; pressure per datasheet
    • Use: grading ; battering ; trenching without repositioning machine
    Regular price £4,560.06
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    • Order by 3pm for Next Day Delivery
  • Hydra-PART 134 degree tilting unit for 12-16T Excavators Machines Giving 15000 N/m Torque
    Regular price £7,320.06
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    Hydra-PART 134 degree tilting unit for 12-16T Excavators Machines Giving 15000 N/m Torque

    Key Features

    • Tilt range: 134 degree total tilt arc
    • Rated torque: 15000 N m output torque class
    • Carrier class: suits 12 ; 16 ton excavators
    • Use case: tilting of buckets and tools for grading ; trenching and access works
    • Integration: compact rotary actuator package ready to mount to appropriate hitch
    • Notes: select correct mount and hydraulics to suit carrier aux circuit
    Regular price £7,320.06
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  • KETA 3 Way Priority Pressure Compensaed Flow Control Valve Cartridge - Approved Hydraulics Limited
    Regular price £68.59
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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 £68.59
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  • Donaldson Hydraulic Return Filter Cartridge 25 Micron - Approved Hydraulics Limited
    Regular price £22.09
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    Donaldson Hydraulic Return Filter Cartridge 25 Micron

    Key Features

    • Type: hydraulic return filter element
    • Rating: 25 micron filtration class
    • Media: cellulose or synthetic media options
    • Use: protect system from contamination on return line
    • Compatibility: fits designated filter head family
    Regular price £22.09
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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.

  • Motor Spool For 50L AK Electric / Lever Operated Valve - Approved Hydraulics Limited
    Regular price £15.25
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    Motor Spool For 50L AK Electric / Lever Operated Valve

    Key Features

    • Spool function: motor spool geometry with A ; B open to tank in neutral for freewheeling
    • Valve family: fits 50 LPM AK electric or lever operated sectional valve body
    • Purpose: minimise cavitation risk and allow smooth motor rundown at neutral
    • Use case: hydraulic motors on conveyors ; augers ; winches
    • Service note: check section seals and end caps during spool replacement
    • Selection: confirm 50L AK body type before ordering
    Regular price £15.25
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  • 8 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable - Approved Hydraulics Limited
    Regular price £447.77
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    8 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Functions: 8 on ; off pushbuttons
    • Supply: 12 ; 24 VDC receiver
    • Harness: 2.4 m prewired receiver connection
    • Use case: multiple discrete outputs for valve coils or contactor logic
    • Applications: hydraulic attachment control where simple binary commands are required
    • Note: choose e stop variant where a safety interlock is mandated
    Regular price £447.77
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  • 6 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable - Approved Hydraulics Limited
    Regular price £434.99
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    6 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Functions: 6 on ; off channels for multi function control
    • Supply: 12 ; 24 VDC receiver input
    • Harness: prewired 2.4 m cable simplifies installation
    • Use case: control of up to three double acting valve sections
    • Applications: service bodies ; cranes ; small plant
    • Operating concept: non proportional on ; off commands for clear operator feedback
    Regular price £434.99
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  • 4 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable - Approved Hydraulics Limited
    Regular price £384.08
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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 £384.08
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  • 8 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m Cable - Approved Hydraulics Limited
    Regular price £853.70
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    8 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m Cable

    Key Features

    • Functions: 8 on ; off pushbuttons with dedicated emergency stop
    • Supply: 12 ; 24 VDC receiver input
    • Harness: prewired receiver cable 2.4 m for quick install
    • Use case: discrete control of solenoid valves ; contactors or relays on mobile plant
    • Integration: suited to retrofit of simple hydraulic controls with radio link
    • Safety: e stop provides immediate stop signal to system interlock
    Regular price £853.70
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  • 12 Button On/Off + E-stop Radio Remote System 12-24VDC prewired 2.4m cable - Approved Hydraulics Limited
    Regular price £1,466.74
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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 £1,466.74
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  • Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (10 kW Max) with Group 2 Pump - Approved Hydraulics Limited
    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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  • Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 3 Pump - Approved Hydraulics Limited
    Regular price From £403.26
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    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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  • Aluminium Hydraulic Male Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 2 Pump - Approved Hydraulics Limited
    Regular price £282.06
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    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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  • Femac Variseal Hydraulic Motor Shaft Seal  For T1/T3/T5 8cc-11cc-16cc - Approved Hydraulics Limited
    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 - Approved Hydraulics Limited
    Regular price £640.86
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    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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  • Complete Cylinder for Intermercator TG25PROS/Sr4/SR5 Grab - Approved Hydraulics Limited
    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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    • 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 - Approved Hydraulics Limited
    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
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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 £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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  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £35.90
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    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 £35.90
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  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £37.60
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    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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    • Order by 3pm for Next Day Delivery
  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £46.62
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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 £46.62
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    • Order by 3pm for Next Day Delivery
  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £50.30
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    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 £50.30
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Google Shopping for Professional Hydraulic Applications

Discover quality google shopping 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. Whether you are replacing existing parts or specifying components for a new build, our experienced team can help you find the right product. 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.