• Motor Flange Assembly Screw For Mounting kit for frame 100/112 B14 AC motor - Approved Hydraulics Limited
    Regular price £1.50
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Motor Flange Assembly Screw For Mounting kit for frame 100/112 B14 AC motor

    Key Features

    • Standard: din 912
    • Thread: m8 x 55
    • Use: motor flange to kit frames 100/112 b14
    • Material: steel
    • Quantity: set of 4 typical
    Regular price £1.50
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Suction pipe horizonal - Approved Hydraulics Limited
    Regular price £1.81
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Suction pipe horizonal

    Key Features

    • Use: mini power pack component
    • Note: verify variant against datasheet
    • Compatibility: as per title family
    • Application: hydraulic system component
    • Application: hydraulic system component
    Regular price £1.81
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Scanreco 2 position detent toggle switch - Approved Hydraulics Limited
    Regular price £42.50
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Scanreco 2 Position Detent Toggle Switch including Rubber Gaitor

    Key Features

    • Type: 2 position detent toggle switch
    • Action: latching both positions
    • Seal: rubber gaiter cap for dust ; moisture protection
    • Rating: suitable for 12 ; 24 vdc control circuits
    • Use: on off or mode selection on transmitter
    Regular price £42.50
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Antenna extension cable 10M
    Regular price £176.12
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Antenna extension cable 10M

    Key Features

    • Type: antenna extension cable for RC400 receiver
    • Length: as specified in title
    • Impedance: 50 ohm typical
    • Connector: coax connection for RC400 antenna port
    • Use: optimise radio reception by relocating antenna
    Regular price £176.12
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 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.

  • Scanreco Proportional Single Module PWM For MOD10 Servo Unit 24V Includes Mounting Bolts.
    Regular price £500.06
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Scanreco Proportional Single Module PWM For MOD10 Servo Unit 24V Includes Mounting Bolts.

    Key Features

    • Type: proportional single module for MOD10 actuator block
    • Supply: 24 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 £500.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Scanreco Maxi Transmitter Emergency Stop Button - Approved Hydraulics Limited
    Regular price £87.91
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Scanreco Maxi Transmitter Emergency Stop Button

    Key Features

    • Type: scanreco radio remote component
    • Compatibility: rc400 series
    • Use: proportional control ; machine remote operation
    • Note: model specific details per part number
    • Service: consult oem manual for wiring
    Regular price £87.91
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Suction Filter 3/8" BSPF 8lpm - Approved Hydraulics Limited
    Regular price £3.12
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Suction Filter 3/8" BSPF 8lpm

    Key Features

    • Connection: 3/8" bspp female
    • Max flow: 8 l/min
    • Type: in tank suction strainer
    • Use: protects pump inlet on mini power packs
    • Installation: screws into suction port inside tank
    Regular price £3.12
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Weld collars 123mm (AC Motors) - Approved Hydraulics Limited
    Regular price £10.85
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Weld collars 123mm (AC Motors)

    Key Features

    • Size: 123 mm
    • Function: weld on collar for tank neck
    • Use: mount 120 mm ; 123 mm filler necks to custom reservoirs
    • Material: steel
    • Applications: power pack tanks ; bespoke fabrications
    Regular price £10.85
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Weld collars 120mm (DC Motors) - Approved Hydraulics Limited
    Regular price £10.85
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Weld collars 120mm (DC Motors)

    Key Features

    • Size: 120 mm
    • Function: weld on collar for tank neck
    • Use: mount 120 mm ; 123 mm filler necks to custom reservoirs
    • Material: steel
    • Applications: power pack tanks ; bespoke fabrications
    Regular price £10.85
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Hydraulic Oil ISO 32, 205 Litre Barrel - Approved Hydraulics Limited

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Hydraulic Oil ISO 32, 205 Litre Barrel

    Key Features

    • Viscosity grade: iso vg 32
    • Type: mineral ; anti wear hm ; hlp
    • Standards: iso 11158 hm ; din 51524-2 hlp
    • Kinematic viscosity @40c: 32 mm^2/s nominal
    • Air release ; water separation: good
    • Use: industrial ; mobile hydraulic pumps ; motors ; valves
    • Packaging: 205 l barrel

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • 2 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable - Approved Hydraulics Limited
    Regular price £357.68
    • All Items Guaranteed
    • Delivery to UK & Ireland

    2 Button On/Off Radio Remote System 12-24VDC prewired 2.4 Mt Cable

    Key Features

    • Buttons: 2 on/off
    • Supply: 12 ; 24 vdc
    • Cable: 2.4 m prewired
    • Use: remote control of basic hydraulic functions
    • Application: hydraulic component
    Regular price £357.68
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    45L-50L Control Valve 3 Position Detent Kit (G) - Approved Hydraulics Limited
    Regular price £34.97
    • All Items Guaranteed
    • Delivery to UK & Ireland

    45L-50L Control Valve 3 Position Detent Kit (G)

    Key Features

    • Part number: 30075303
    • Compatibility: 45L; 50L control valve family
    • Detent type: 3 position detent kit; type G
    • Function: Locks spool in 3 working positions without holding the lever
    • Typical use: Continuous functions such as motors or extended actuator cycles
    • Installation: Retrofit kit for valve spool end cap assembly
    Regular price £34.97
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 160L 240L M12 Hand Lever - Approved Hydraulics Limited
    Regular price £5.08
    • All Items Guaranteed
    • Delivery to UK & Ireland

    160L 240L M12 Hand Lever

    Key Features

    • Thread: M10
    • Lever length: mm
    • Grip: black plastic knob
    • Compatibility: 45 l ; 80 l ; 90 l ; 100 l ; 120 l ; 150 l ; 240 l valve families
    • Application: hydraulic component
    Regular price £5.08
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Hydraulic Leg Lock off Valve - Isolator - Diverter valve 3/8" - Approved Hydraulics Limited
    Regular price £147.95
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Hydraulic Leg Lock off Valve - Isolator - Diverter valve 3/8"

    Key Features

    • Type: lock off ; diverter valve
    • Port size: 3/8"
    • Function: isolate hydraulic leg circuit
    • Use: service ; transport safety
    • Application: hydraulic system component
    Regular price £147.95
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Stabiliser Leg Ram Cylinder Assembly 70 x 50 x 270 Stroke (incl Pilot  Operated Check Valve) - Approved Hydraulics Limited
    Regular price £282.06
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Stabiliser Leg Ram Cylinder Assembly 70 x 50 x 270 Stroke (incl Pilot Operated Check Valve)

    Key Features

    • Bore: 70 mm
    • Rod: 50 mm
    • Stroke: 270 mm
    • Valve: pilot operated check valve integrated
    • Use: stabiliser leg actuation on cranes/trucks
    Regular price £282.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" Banjo Bolt c/w 2 x washers - Approved Hydraulics Limited
    Regular price £4.72
    • All Items Guaranteed
    • Delivery to UK & Ireland

    1/2" Banjo Bolt c/w 2 x washers

    Key Features

    • Part number: HP-BJB-12
    • Bolt size: 1/2 in banjo bolt
    • Sealing: Supplied with 2 sealing washers
    • Connection type: Hollow banjo bolt for banjo body fittings
    • Typical use: Hydraulic hose or tube banjo connections; leak tight sealing
    • Installation note: Use washers either side of banjo body and tighten to fitting spec
    Regular price £4.72
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • CETOP 5 Coil  - 24VDC, (31mm Bore x 75mm long) - Approved Hydraulics Limited
    Regular price £28.50
    • All Items Guaranteed
    • Delivery to UK & Ireland

    CETOP 5 Coil - 24VDC, (31mm Bore x 75mm long)

    Key Features

    • Interface: CETOP 5
    • 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 £28.50
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 24vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long - Approved Hydraulics Limited
    Regular price £124.93
    • All Items Guaranteed
    • Delivery to UK & Ireland

    24vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long

    Key Features

    • Valve family: HP50 solenoid sections
    • Voltage: 24 VDC
    • Core ; length: Ø 24 mm ; 60 mm long
    • Connector: DIN 43650 Form A
    • Insulation class: Class H typical for DC coils
    • Protection: IP65 with gasketed DIN plug
    Regular price £124.93
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 12vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long - Approved Hydraulics Limited
    Regular price £124.93
    • All Items Guaranteed
    • Delivery to UK & Ireland

    12vDC Coil For HP-50 Monoblock Valve 24mm Dia Hole x 104mm Long

    Key Features

    • Valve family: HP50 solenoid sections
    • Voltage: 12 VDC
    • Core ; length: Ø 24 mm ; 60 mm long
    • Connector: DIN 43650 Form A or flying lead ; per build
    • Duty: continuous ; wet armature compatible
    • Protection: IP65 with correct DIN plug
    Regular price £124.93
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    11cc Group 2 Reversible Gear Motor 4 Bolt 1:8 taper 250 Bar WP 3/4" BSP Ports + 1/4" BSP Drain
    Regular price £171.06
    • All Items Guaranteed
    • Delivery to UK & Ireland

    11cc Group 2 Reversible Gear Motor 4 Bolt 1:8 taper 250 Bar WP 3/4" BSP Ports + 1/4" BSP Drain

    Key Features

    • Displacement: 11.3 cm3.rev (Group 2)
    • Mounting: 4 bolt European flange ; Ø36.5 spigot
    • Shaft: 1.8 taper with key
    • Ports: 3/4" BSP P.A.B ; 1/4" BSP case drain
    • Rotation: bi directional reversible
    • Working pressure: up to ~250–300 bar model dependent
    • Construction: aluminium body ; cast iron end covers ; pressure balanced
    Regular price £171.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • HP-50 Kit-Complete Wet Spool Lever Cap For HP50 Control Valve - Approved Hydraulics Limited
    Regular price £28.21
    • All Items Guaranteed
    • Delivery to UK & Ireland

    HP-50 Kit-Complete Wet Spool Lever Cap For HP50 Control Valve

    Key Features

    • Compatibility: HP50 monoblock control valve sections
    • Assembly: complete wet spool lever cap with lever hardware
    • Rated flow of valve: 50 l.min HP50 valve family
    • Seal type: wet armature design with O ring sealing
    • Use: service kit to replace damaged cap ; restores manual actuation
    Regular price £28.21
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    3/8" 3 Way Adjustable Priority Flow Control Valve  - Excess to Line. - Approved Hydraulics Limited
    Regular price £107.47
    • All Items Guaranteed
    • Delivery to UK & Ireland

    3/8" 3 Way Adjustable Priority Flow Control Valve - Excess to Line.

    Key Features

    • Ports: G 3/8 BSPP
    • Function: 3 way pressure compensated priority flow control
    • Max inlet flow: 60 l.min
    • Max outlet C flow: 35 l.min
    • Max pressure: 270 bar
    • Body: aluminium body ; hardened steel internals
    • Use: set constant actuator flow with excess to tank or secondary circuit
    Regular price £107.47
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    3 WAY PRIORITY VALVE - EXCESS TO LINE 3/4"
    Regular price £159.00
    • All Items Guaranteed
    • Delivery to UK & Ireland

    3 WAY PRIORITY VALVE - EXCESS TO LINE 3/4"

    Key Features

    • Ports: G 3/4 BSPP
    • Function: 3 way priority flow control ; excess to S line
    • Max inlet flow: 150 l.min
    • Max regulated flow: up to 90 l.min adjustment range
    • Max pressure: 260 bar
    • Body: aluminium body ; hardened internal parts
    • Adjustment: twin handknob ; lockable
    • Typical use: steering priority ; auxiliary circuits from single pump
    Regular price £159.00
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • M5 x 110 CAP head bolt
    Regular price £2.22
    • All Items Guaranteed
    • Delivery to UK & Ireland

    M5 x 110 CAP head bolt

    Key Features

    • Thread: metric M5
    • Length: 110 mm
    • Head: socket cap
    • Material: high tensile steel (typical)
    • Use: hydraulic assemblies; brackets; adapters
    • Drive: internal hex for controlled tightening
    Regular price £2.22
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

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.