• Out of Stock
    Aluminium Hydraulic Female Shaft AGRI PTO Gearbox 3:1 Ratio (20 kW Max) with Group 3 Pump - Approved Hydraulics Limited
    Regular price £318.58 Ex VAT £382.30 Inc VAT
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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 £318.58 Ex VAT £382.30 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £139.20 Ex VAT £167.05 Inc VAT
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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 £139.20 Ex VAT £167.05 Inc VAT
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  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £29.91 Ex VAT £35.90 Inc VAT
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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 £29.91 Ex VAT £35.90 Inc VAT
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  • Seal Kit For Hydra Part MR Motor (Zi) - Approved Hydraulics Limited
    Regular price £41.91 Ex VAT £50.30 Inc VAT
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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 £41.91 Ex VAT £50.30 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.

  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £21.93 Ex VAT £26.32 Inc VAT
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    HP-30C Type Group 3 Pump Seal Kit

    Key Features

    • Compatibility: Hydra Part HP-30C Group 3 aluminium gear pumps
    • Intended use: service kit for shaft and static seals on Group 3 pump body
    • Typical kit contents: front lip seal ; cover o rings and body seals for Group 3 construction
    • Reference performance: Group 3 pumps in range typically used at higher flows and pressures
    • Applications: PTO driven systems ; industrial power units requiring larger displacements
    • Fitment check: confirm HP-30C family before ordering to ensure correct diameters
    Regular price £21.93 Ex VAT £26.32 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £9.30 Ex VAT £11.17 Inc VAT
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    HP-C20 Tandem Gear Pump Seal Kit. Suits Front 067 or Rear 066

    Key Features

    • Compatibility: Hydra Part Group 2 tandem pumps using front code 067 ; rear code 066 interfaces
    • Intended use: renew the sealing set when splitting tandem sections or replacing shaft seal
    • Typical kit contents: shaft seal ; o rings ; interface seals used between tandem pump sections
    • Notes on assembly: ensure rear shaft selection matches torque from front section during build
    • Applications: tandem pumps on tippers ; loaders ; auxiliary hydraulic circuits
    • Variant note: front 067 ; rear 066 code covers common Group 2 tandem configurations
    Regular price £9.30 Ex VAT £11.17 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £12.80 Ex VAT £15.37 Inc VAT
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    HP-10C Group 1 Pump Seal Kit

    Key Features

    • Compatibility: Hydra Part HP-10C Group 1 gear pumps
    • Intended use: renew shaft and static seals during Group 1 pump overhaul
    • Typical kit contents: front shaft oil seal ; body o rings ; gasket elements for Group 1 casing
    • Pump family: light duty aluminium gear pumps used widely on compact hydraulics
    • Service note: check for shaft play ; replace bearings if excessive to protect new seal
    • Applications: power packs ; small mobile circuits ; low to mid power implements
    Regular price £12.80 Ex VAT £15.37 Inc VAT
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    • 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 £16.40 Ex VAT £19.68 Inc VAT
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    Cylinder Seal kit 25-40/50 series 201/301/401/501

    Key Features

    • Compatibility: Hydra Part cylinder series 201 ; 301 ; 401 ; 501
    • Bore sizes: 25 ; 30 ; 35 ; 40/50 mm options in one kit family
    • Intended use: reseal of small bore cylinders within listed series to restore function
    • Typical kit contents: piston ; rod ; wiper seals with static o rings used in cylinder rebuilds
    • Applications: compact hydraulic rams on implements ; compact plant ; attachments
    • Selection note: match cylinder series and bore at time of order to ensure fit
    Regular price £16.40 Ex VAT £19.68 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £30.09 Ex VAT £36.11 Inc VAT
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    Cylinder Seal kit 40-70/80 series 204/304/404/504/592

    Key Features

    • Compatibility: Hydra Part cylinder series 204 ; 304 ; 404 ; 504 ; 592
    • Bore sizes: 40 ; 50 ; 63 ; 70/80 mm
    • Intended use: reseal kit for mid size cylinders across the listed series
    • Typical kit contents: piston ; rod ; wiper seals with associated o rings typical to service kits
    • Applications: ag implements ; compact construction machines ; materials handling rams
    • Fitment check: match series code on cylinder plate to ensure correct family selection
    Regular price £30.09 Ex VAT £36.11 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £31.90 Ex VAT £38.29 Inc VAT
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    Cylinder Seal kit 30-70/80 standard

    Key Features

    • Compatibility: Hydra Part standard double acting cylinders ; bores 30 ; 40 ; 50 ; 60/70 ; 80 mm
    • Intended use: routine reseal kit for compact and mid size standard cylinders
    • Typical kit contents: dynamic piston and rod seals ; wiper and static sealing elements typical for rebuild
    • Applications: compact machinery ; auxiliary rams ; attachments
    • Fitment check: verify bore and rod combo to select the correct sub option within the range
    • Service note: install with clean fluid and avoid sharp edges to protect sealing lips
    Regular price £31.90 Ex VAT £38.29 Inc VAT
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  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £32.54 Ex VAT £39.05 Inc VAT
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    Cylinder Seal kit 40-80/90 series 205/305/405/505/593/612/632/642/651

    Key Features

    • Compatibility: Hydra Part cylinder series 205 ; 305 ; 405 ; 505 ; 593 ; 612 ; 632 ; 642 ; 651
    • Bore sizes: 40 ; 50 ; 63 ; 70 ; 80/90 mm
    • Intended use: service kit for resealing listed series cylinders to prevent leakage and drift
    • Typical kit contents: rod seal ; piston seal ; wiper ; backup rings and o rings as required
    • Applications: mobile hydraulic cylinders across ag ; municipal and light construction machinery
    • Selection note: match series and bore markings to ensure compatibility across the variant list
    Regular price £32.54 Ex VAT £39.05 Inc VAT
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    • 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 £40.29 Ex VAT £48.35 Inc VAT
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    Cylinder Seal kit 50-90/100 series 206/306/406/506

    Key Features

    • Compatibility: Hydra Part cylinder series 206 ; 306 ; 406 ; 506
    • Bore sizes: 50 ; 63 ; 70 ; 80/90 ; 100 mm range
    • Intended use: resealing of medium bore cylinders in the specified series to recover performance
    • Typical kit contents: piston ; rod ; wiper and related static seals typical to cylinder service kits
    • Applications: suitable for rams on trailers ; loaders ; compact equipment within these series
    • Fitment check: use the series code stamped on the cylinder to select the correct kit
    Regular price £40.29 Ex VAT £48.35 Inc VAT
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    • 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 £65.14 Ex VAT £78.17 Inc VAT
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    Cylinder Seal kit 70-130/150 standard

    Key Features

    • Compatibility: Hydra Part standard double acting cylinders ; larger bores 70 ; 80 ; 90 ; 100 ; 110 ; 125 ; 130/150 mm
    • Intended use: service kit for major reseal of large bore standard cylinders
    • Typical kit contents: dynamic seals for piston and rod ; wiper ; and static seals typical for rebuild
    • Application range: heavy mobile plant ; materials handling ; forestry and similar equipment
    • Sizing note: check both bore and rod dimensions to match the correct sub option within the range
    • Service guidance: clean grooves and lightly lubricate seals during assembly to avoid damage
    Regular price £65.14 Ex VAT £78.17 Inc VAT
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    • 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 £43.15 Ex VAT £51.79 Inc VAT
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    Cylinder Seal kit 50-100/115 series 207/307/407/507

    Key Features

    • Compatibility: Hydra Part cylinder series 207 ; 307 ; 407 ; 507
    • Bore sizes: 50 ; 63 ; 70 ; 80 ; 90 ; 100/115 mm options combined in range
    • Intended use: complete reseal of specified series cylinders during overhaul or preventive maintenance
    • Typical kit contents: piston seal ; rod seal ; wiper ; static o rings as used in cylinder rebuilds
    • Use case: suited to construction ; agricultural and industrial rams within the listed series
    • Fitment check: confirm cylinder plate or purchase record for exact series before fitment
    Regular price £43.15 Ex VAT £51.79 Inc VAT
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    • 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 £37.84 Ex VAT £45.41 Inc VAT
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    Cylinder Seal kit 45-80/90 standard

    Key Features

    • Compatibility: Hydra Part standard double acting cylinders ; bores 45 ; 80/90 mm
    • Intended use: rebuild and reseal standard cylinders to restore pressure integrity and stop external leakage
    • Typical kit contents: piston ; rod ; buffer and wiper seals plus associated o rings for cylinder service
    • Applications: general mobile hydraulics ; loaders ; attachments ; ag and industrial equipment
    • Maintenance note: verify bore ; rod ; and series before ordering to match correct seal sizes
    • Fluid compatibility: formulated for use with mineral hydraulic oils common to mobile machinery
    Regular price £37.84 Ex VAT £45.41 Inc VAT
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  • 50L Control Valve MID Inlet section with relief (E12) - Approved Hydraulics Limited
    Regular price £57.65 Ex VAT £69.18 Inc VAT
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    50L Control Valve MID Inlet section with relief (E12)

    Key Features

    • Section type: mid inlet (e12) with pressure relief
    • Compatibility: 50l gs sectional valve
    • Function: adds pump inlet mid stack and adjustable relief
    • Typical flow class: 50 l/min nominal
    • Relief range (typical): 0 ; 315 bar adjustable
    Regular price £57.65 Ex VAT £69.18 Inc VAT
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  • 80L - 100L-150L - 240L Control Valve  Fixed Port Relief/Anti Cav. 200 bar Type RPHT U200 - Approved Hydraulics Limited
    Regular price £29.24 Ex VAT £35.09 Inc VAT
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    80L - 100L-150L - 240L Control Valve Fixed Port Relief/Anti Cav. 220 bar Type RPHT U220

    Key Features

    • Type: fixed port relief ; anti cavitation (rpht)
    • Setting: 220 bar
    • Compatibility: 80l ; 100l ; 150l ; 240l working port cavities
    • Purpose: limits port pressure spikes and prevents cavitation
    • Other settings: 100 ; 120 ; 140 ; 160 ; 180 ; 200 ; 240 ; 260 bar options
    Regular price £29.24 Ex VAT £35.09 Inc VAT
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  • 45L - 50L 24V On/Off Electro Pneumatic Kit  8EP4 With With Manifold Block (30034555) - Approved Hydraulics Limited
    Regular price £128.86 Ex VAT £154.64 Inc VAT
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    45L - 50L 24V On/Off Electro Pneumatic Kit 8EP4 With With Manifold Block (30034555)

    Key Features

    • Kit: 8ep4 on/off electro pneumatic kit with manifold
    • Voltage: 24 vdc
    • Compatibility: 45l ; 50l valve families
    • Purpose: remote electrical actuation via air cylinder on spool
    • Controls: works with radio remote or switch outputs
    Regular price £128.86 Ex VAT £154.64 Inc VAT
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  • 45L - 50L 24V On/Off Electro Pneumatic Kit  8EP4 With With Manifold Block (30034555) - Approved Hydraulics Limited
    Regular price £134.25 Ex VAT £161.10 Inc VAT
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    45L - 50L 12V On/Off Electro Pneumatic Kit 8EP4 With With Manifold Block (30034555)

    Key Features

    • Kit: 8ep4 on/off electro pneumatic kit with manifold
    • Voltage: 12 vdc
    • Compatibility: 45l ; 50l valve families
    • Purpose: remote electrical actuation via air cylinder on spool
    • Controls: works with radio remote or switch outputs
    Regular price £134.25 Ex VAT £161.10 Inc VAT
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 100L Control Valve Motor Spool (Type 2) - Approved Hydraulics Limited
    Regular price £23.20 Ex VAT £27.84 Inc VAT
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    100L Control Valve Motor Spool (Type 2)

    Key Features

    • Spool type: motor spool (type 2)
    • Compatibility: 100l gs sectional working section
    • Spool diameter (family): 20 mm interchangeable spools
    • Intended use: bidirectional hydraulic motor control
    • Options: kits for detent ; stroke limiters ; auxiliary valves
    Regular price £23.20 Ex VAT £27.84 Inc VAT
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  • 100L Control valve Inlet  Section 3/4 Left Inlet (AC)
    Regular price £87.01 Ex VAT £104.42 Inc VAT
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    100L Control valve Inlet Section 3/4 Left Inlet (AC)

    Key Features

    • Section type: left inlet (ac) with pressure relief
    • Port size: 3/4" bsp
    • Compatibility: 100l gs sectional control valve
    • Function: pump inlet and adjustable system relief
    • Relief range (typical): 60 ; 315 bar adjustable
    Regular price £87.01 Ex VAT £104.42 Inc VAT
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  • 24VDC - 37W- ED 100% Solenoid Only For 45L & 50L Unloader Valve - Approved Hydraulics Limited
    Regular price £16.86 Ex VAT £20.24 Inc VAT
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    24VDC - 37W- ED 100% Solenoid Only For 45L & 50L Unloader Valve

    Key Features

    • Voltage: 24 vdc
    • Power: 37 w
    • Duty cycle: ed 100% ; continuous
    • Application: coils for 45l ; 50l solenoid operated valves
    • Connector: 4 pin style per data sheet
    • Use: replacement coil only ; valve body not included
    Regular price £16.86 Ex VAT £20.24 Inc VAT
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  • 80L Control Valve Inlet Section AC -L/H (Old No 30085749)
    Regular price £73.81 Ex VAT £88.58 Inc VAT
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    80L Control Valve Inlet Section AC -L/H (Old No 30085749)

    Key Features

    • Section type: left inlet (ac)
    • Compatibility: 80l gs sectional control valve
    • Old reference: 30085749
    • Includes: direct acting pressure relief valve
    • Relief range (typical): 25 ; 315 bar adjustable
    • Function: main pump inlet ; overpressure protection
    Regular price £73.81 Ex VAT £88.58 Inc VAT
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  • 80L Control Valve Tank Section (Type TC) (Old ref 30085660) - Approved Hydraulics Limited
    Regular price £44.84 Ex VAT £53.81 Inc VAT
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    80L Control Valve Tank Section (Type TC) (Old ref 30085660)

    Key Features

    • Section type: tank/outlet section (tc)
    • Compatibility: 80l gs sectional control valve
    • Function: provides main return to tank port for the valve stack
    • Old reference: 30085660
    • Typical circuits: open centre with optional carry over porting
    Regular price £44.84 Ex VAT £53.81 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.