• Scanreco RC400 6 Function Radio Remote Control (G2B) - Approved Hydraulics
    Regular price £3,741.18
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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 £3,741.18
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  • Relief valve 50 to 250 Bar Range - Approved Hydraulics Limited
    Regular price £11.15
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    Relief valve 50 to 250 Bar Range

    Key Features

    • Adjustment range: 50 ; 250 bar
    • Cavity: sae 08 ; 3/4-16 unf
    • Function: pump pressure protection to tank
    • Max working: up to 350 bar class
    • Application: mini power pack manifold
    Regular price £11.15
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  • Restrictor 0.7mm 3/8 - 3/8 Male / Male - Approved Hydraulics Limited
    Regular price £6.06
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    Restrictor 0.7mm 3/8 - 3/8 Male / Male

    Key Features

    • Type: inline flow restrictor fitting
    • Orifice: 0.7 mm calibrated orifice
    • Thread: 3/8" BSP male to 3/8" BSP male
    • Function: limits cylinder/rotator speed; reduces shock
    • Material: plated steel body for hydraulic service
    Regular price £6.06
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  • Scanreco Retro Fit Radio Remote Control, 4 Functions - Approved Hydraulics
    Regular price £5,349.32
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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 £5,349.32
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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.

  • Scanreco Retro Fit Radio Remote Control, 6 Functions - Approved Hydraulics
    Regular price £5,820.60
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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 £5,820.60
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  • Return Air Filter - 152mm - 25 µm - Approved Hydraulics Limited
    Regular price £84.68
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    Return Air Filter - 152mm - 25 µm

    Key Features

    • Type: tank top return ; air breather element
    • Length: 152 mm
    • Filtration: 25 µm nominal
    • Use: hydraulic reservoir breathing ; return filtration
    • Compatibility: frd ; similar housings
    Regular price £84.68
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  • Return Air Filter - 235mm - 25 µm
    Regular price £81.07
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    Return Air Filter - 235mm - 25 µm

    Key Features

    • Part number: FRD09
    • Filter type: Return line filter for hydraulic oil systems
    • Filtration rating: 25 µm mesh
    • Height: 235 mm
    • Connection: 1 in BSP
    • Max working pressure: 3 bar
    • Bypass valve: 1.7 bar ±10 percent
    • Materials: Head and cover aluminium; bowl polyamide
    Regular price £81.07
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  • Return pipe horizontal - Approved Hydraulics Limited
    Regular price £1.40
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    Return pipe horizontal

    Key Features

    • Orientation: horizontal
    • Function: return oil from cetop stack to tank
    • Connection: g 1/4 interface
    • Use: mini power pack tank
    • Note: select length to suit tank depth
    Regular price £1.40
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  • Return Pipe Vertical 180mm
    Regular price £1.40
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    Return Pipe Vertical 180mm

    Key Features

    • Orientation: vertical
    • Length: 180 mm
    • Connection: g 1/4 interface
    • Use: return oil from manifold to tank
    • Application: mini power pack
    Regular price £1.40
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  • Return Pipe Vertical 320mm
    Regular price £1.60
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    Return Pipe Vertical 320mm

    Key Features

    • Orientation: vertical
    • Length: 320 mm
    • Connection: g 1/4 interface
    • Use: return oil from manifold to tank
    • Application: mini power pack
    Regular price £1.60
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    • Order by 3pm for Next Day Delivery
  • Hydra Part Riddle Buckets for 13T to 15T Machines - Approved Hydraulics

    POA

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    Riddle Buckets for 13T to 15T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 13T to 15T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Riddle Buckets for 1T to 1.9T Machines - Approved Hydraulics

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    Riddle Buckets for 1T to 1.9T Machines

    Key Features

    • Function: screening; riddling and separating oversize material on 1T to 1.9T carriers
    • Structure: ribbed skeleton with cross bars; open bottom to reduce weight
    • Rib spacing: configurable gap to match target material size
    • Material: wear plate construction for abrasion resistance
    • Use cases: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Riddle Buckets for 20T to 22T Machines - Approved Hydraulics

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    Riddle Buckets for 20T to 22T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 20T to 22T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Riddle Buckets for 2T to 2.9T Machines - Approved Hydraulics

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    Riddle Buckets for 2T to 2.9T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 2T to 2.9T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Riddle Buckets for 3T to 3.9T Machines - Approved Hydraulics

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    Riddle Buckets for 3T to 3.9T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 3T to 3.9T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Riddle Buckets for 4T to 6T Machines - Approved Hydraulics

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    Riddle Buckets for 4T to 6T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 4T to 6T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Riddle Buckets for 7T to 9T Machines - Approved Hydraulics

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    Riddle Buckets for 7T to 9T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 7T to 9T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Hydra Part Ripper Teeth - Approved Hydraulics

    POA

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    Ripper Teeth

    Key Features

    • Design: high penetration profile for rock; frost and hard ground ripping
    • System: supports common GET families such as Cat J and ESCO Ultralok
    • Locking: hammerless or side-pin retention depending on system
    • Materials: alloy steel tips with heat treatment for hardness and impact toughness
    • Service: replaceable tips with matching adapters; retainers and pins
    • Use: boosts breakout force and pre-rips before excavation

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £674.46
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    RMR6C Rotator Seal Kit

    Key Features

    • Compatibility: Intermercato RMR6C rigid rotator
    • Machine class: excavators up to 6 ton ; rigid mount G rotor design
    • Intended use: replacement of OEM sealing elements to correct leaks and maintain pressure
    • Typical kit contents: rotor shaft seals ; housing seals ; port seals for RMR6C architecture
    • Applications: sorting grabs ; clamshell buckets ; forestry handling on 5 ; 6T carriers
    • Fitment note: confirm model plate RMR6C before ordering to avoid mismatch
    Regular price £674.46
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    • Order by 3pm for Next Day Delivery
  • Bini Rotary Manifold DA Series (2-8 Channels) - Approved Hydraulics
    Regular price From £680.47
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    Rotary Manifold DA Series (2-8 Channels)

    Key Features

    • Type: hydraulic rotary manifold
    • Channels: 2–8 hydraulic passages
    • Rated pressure: up to 420 bar
    • Speed: 0–12 rpm recommended
    • Mounting: vertical axis; no axial or radial loads
    Regular price From £680.47
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  • Bini Rotary Manifold DI Series (2-18 Channels) - Approved Hydraulics

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    Rotary Manifold DI Series (2-18 Channels)

    Key Features

    • Type: hydraulic rotary manifold for multi-channel transfer
    • Channels: 2–18 hydraulic passages
    • Rated pressure: up to 420 bar
    • Speed: 0–12 rpm continuous rotation
    • Option: add electrical swivel for hybrid transfer

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Bini Rotary Manifold DM Series (7-11 Channels) - Approved Hydraulics

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    Rotary Manifold DM Series (7-11 Channels)

    Key Features

    • Type: compact rotary manifold
    • Channels: 7–11 hydraulic passages
    • Rated pressure: up to 420 bar
    • Ports: BSP 1/8" to 1/2" depending on size
    • Use: small/medium rotary equipment

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Bini Rotary Manifold DPC Series (8-18 Channels) - Approved Hydraulics

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    Rotary Manifold DPC Series (8-18 Channels)

    Key Features

    • Type: rotary manifold with fixed 3/8" BSP ports
    • Channels: 8–18 hydraulic passages
    • Rated pressure: up to 420 bar
    • Speed: 0–12 rpm
    • Use: high channel count applications

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • Rotary shaft seal - Approved Hydraulics Limited
    Regular price £14.24
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    Rotary shaft seal

    Key Features

    • Type: rotary shaft oil seal
    • Profile: R23 style (double lip with dust lip)
    • Material: oil-resistant elastomer with garter spring
    • Use: seals cone splitter spindle against oil leakage
    • Service: replace when leakage or lip wear is observed
    Regular price £14.24
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All for Professional Hydraulic Applications

Discover quality all 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.