• Proximity Switch
    Regular price £159.62
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    Proximity Switch

    Key Features

    • Body style: M18 threaded barrel flush mount
    • Sensing range: 8 mm nominal
    • Supply voltage: 10 to 30 vdc
    • Output options: 2 wire dc ; PNP ; NPN ; NO ; NC variants
    • Ingress protection: IP65 ; IP66 ; IP67 ; IP68 ; IP69K
    • Switching frequency: 400 Hz typical
    • Operating temperature: -40 to +85 degC
    • Connection: M12 A coded connector ; 2 m PUR cable variants
    • Standard: IEC 60947-5-2 inductive proximity
    Regular price £159.62
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  • Oil Filter Element - FRD17 - 93mm - 25µm
    Regular price £19.46
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    Oil Filter Element - FRD17 - 93mm - 25µm

    Key Features

    • Series: FRD17 replacement element
    • Diameter: 93 mm nominal element OD
    • Filtration rating: 25 µm nominal media grade
    • Intended use: particulate removal in hydraulic oil to protect components
    • Applications: return ; suction or low pressure filter housings sized for FRD17 elements
    • Service note: monitor differential pressure and change when indicator shows restriction
    Regular price £19.46
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  • 3/8" BSP steel body for A2 cartridge valve
    Regular price £28.04
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    3/8" BSP steel body for A2 cartridge valve

    Key Features

    • Thread: 3/8" BSPP ports
    • Material: steel body for robustness
    • Interface: accepts A2 size screw-in cartridge valve
    • Use: manifold body for line-mounted control functions
    • Service: suitable for industrial hydraulic circuits
    Regular price £28.04
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  • shaft collar 45mm - Approved Hydraulics Limited
    Regular price £9.77
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    shaft collar 45mm

    Key Features

    • Type: shaft collar for axial location and load stop
    • Bore size: 45 mm
    • Function: prevents axial movement and component drift on shafts
    • Construction: robust steel collar for high-load environments
    • Use: spacers; stops; locating collars in power transmission
    Regular price £9.77
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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.

  • Shaft Collar 50mm - Approved Hydraulics Limited
    Regular price £10.99
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    Shaft Collar 50mm

    Key Features

    • Type: shaft collar for axial location and load stop
    • Bore size: 50 mm
    • Function: prevents axial movement and component drift on shafts
    • Construction: robust steel collar for high-load environments
    • Use: spacers; stops; locating collars in power transmission
    Regular price £10.99
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  • shaft collar 60mm
    Regular price £13.51
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    shaft collar 60mm

    Key Features

    • Type: shaft collar for axial location and load stop
    • Bore size: 60 mm
    • Function: prevents axial movement and component drift on shafts
    • Construction: robust steel collar for high-load environments
    • Use: spacers; stops; locating collars in power transmission
    Regular price £13.51
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  • shaft collar 65mm - Approved Hydraulics Limited
    Regular price £22.33
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    shaft collar 65mm

    Key Features

    • Type: shaft collar for axial location and load stop
    • Bore size: 65 mm
    • Function: prevents axial movement and component drift on shafts
    • Construction: robust steel collar for high-load environments
    • Use: spacers; stops; locating collars in power transmission
    Regular price £22.33
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    • Order by 3pm for Next Day Delivery
  • Allison 10 Bolt gasket - Approved Hydraulics Limited
    Regular price £23.40
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    Allison 10 Bolt gasket

    Key Features

    • Pattern: 10‑bolt PTO aperture (Allison 3000/4000 series)
    • Function: seals PTO cover or unit to transmission housing
    • Use case: replace on PTO install or service
    • Prevents: oil leaks & contamination ingress
    • Notes: sized for Allison 10‑bolt PTO opening
    Regular price £23.40
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  • 1/2" BSP Coned Blanking Plug - Approved Hydraulics Limited
    Regular price £12.54
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    1" BSP Coned Blanking Plug

    Key Features

    • Thread: 1" BSPP male with 60 degree cone sealing form
    • Standard: coned plug geometry per ISO 8434 ; 6
    • Material: steel ; zinc plated in common variants
    • Working pressure: typical rating around 210 bar for 1 inch size in steel adaptors
    • Use case: blank and pressure test BSPP female ports on hydraulic manifolds or hoses
    • Seal concept: cone seats directly to matching female cone for metal to metal seal
    Regular price £12.54
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  • Filter Housing Gasket
    Regular price £11.12
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    Filter Housing Gasket

    Key Features

    • Function: seals the interface between hydraulic filter housing and cover to prevent leaks
    • Compatibility: for Hydra Part filter housing family reference CCJUN type
    • Intended use: gasket replacement during element changes or service
    • Applications: tank return ; pressure or suction filter assemblies
    • Service note: replace at each element change to maintain seal integrity
    • Material note: select elastomer compatible with system oil and temperature
    Regular price £11.12
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  • BALL VALVE 1" 1/2; BSP; MALE - FEMALE (BRASS) - Approved Hydraulics Limited
    Regular price £38.26
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    BALL VALVE 1" 1/2; BSP; MALE - FEMALE (BRASS)

    Key Features

    • Thread ends: 1 1/2" BSP male × female
    • Body material: brass
    • Typical location: tank admission line (reservoir outlet)
    • Operation: quarter‑turn lever ball valve
    • Service: isolation/flow shut‑off in hydraulic circuits
    Regular price £38.26
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  • GASKET MOUNT KIT - TF4201 - Approved Hydraulics Limited
    Regular price £118.49
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    GASKET MOUNT KIT - TF4201

    Key Features

    • Compatibility: ABER TF4201 twin‑output ZF PTO
    • Function: sealing kit for PTO mounting (leak‑free install)
    • Use case: replace gasket on every PTO install/service
    • Benefit: maintains oil retention & correct clamp load
    • Contents: gasket/mounting seals sized to TF4201 pattern
    Regular price £118.49
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  • VACUUM KIT ; 12 VDC - Approved Hydraulics Limited
    Regular price £227.69
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    VACUUM KIT ; 12 VDC

    Key Features

    • Type: vacuum actuation kit for PTOs
    • Supply voltage: 12 VDC
    • Components: electric vacuum pump and solenoid control
    • Use: enables/controls vacuum‑shift PTO engagement
    • Alternatives: 24 VDC kit available (KPNE/KVAC series)
    Regular price £227.69
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  • PTO ZF S6-90 C.P.(1:1); NO SENSOR - Approved Hydraulics Limited
    Regular price £527.42
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    PTO ZF S5-42/5,72 C.P.; With Sensor

    Key Features

    • Gearbox compatibility: ZF S5‑42 (5.72 ratio variant)
    • Control: pneumatic side‑mount operation
    • Mounting: 6‑bolt PTO aperture (near/offside)
    • Output: UNI 3‑bolt or ISO 4‑bolt (model dependent)
    • Sensor: included (pressure/speed on‑off)
    • Output speed: ~95% of engine speed (typical for 5.72)
    • Torque examples: ~145–206 Nm depending on variant
    Regular price £527.42
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  • PTO MERCEDES G5-6/6,29-0,78 P.C. (RATIO 1:1,32); W/ SENSOR (Z)
    Regular price £473.30
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    PTO MERCEDES G5-6/6,29-0,78 P.C. (RATIO 1:1,32); W/ SENSOR (Z)

    Key Features

    • Use case: Power take off unit for driving hydraulic pumps on commercial vehicle gearboxes
    • 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 £473.30
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  • ABER QUILL SHAFT ADAPTER KIT ZF 12-AS-1800; 16-AS-2200
    Regular price £142.55
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    ABER QUILL SHAFT ADAPTER KIT ZF 12-AS-1800; 16-AS-2200

    Key Features

    • Gearbox compatibility: ZF 12‑AS‑1800 / 16‑AS‑2200 (AS‑Tronic)
    • Variants: with or without Intarder (IT) options
    • Purpose: connect gearbox jackshaft to rear‑mount PTO
    • Benefit: ensures proper spline engagement and durability
    • Notes: matched to ABER PTO references for these gearboxes
    Regular price £142.55
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  • ABER QUILL SHAFT ADAPTER KIT MERCEDES G210;G211;G240
    Regular price £215.69
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    ABER QUILL SHAFT ADAPTER KIT MERCEDES G210;G211;G240

    Key Features

    • Gearbox compatibility: Mercedes G210 / G211 / G240
    • Purpose: intermediate quill drive between gearbox and PTO
    • ABER reference: VK8005 adapter kit (used with TF4002 series)
    • Application: rear‑mount PTO installations
    • Benefit: correct alignment and torque transfer
    Regular price £215.69
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  • ADMISSION CONNECTOR 3/4'' PIPE 1''1/4 ELBOW
    Regular price £35.75
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    ADMISSION CONNECTOR 3/4'' PIPE 1''1/4 ELBOW

    Key Features

    • Connections: 3/4" pipe to 1 1/4" elbow
    • Form: elbow connector
    • Intended use: pump admission/suction side
    • Construction: steel (ABER pump spares)
    • Compatibility: ABER pump inlet fittings
    Regular price £35.75
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  • ADMISSION CONNECTOR 1"1/4 PIPE 1"1/2 ELBOW 90º - Approved Hydraulics Limited
    Regular price £41.45
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    ADMISSION CONNECTOR 1"1/4 PIPE 1"1/2 ELBOW 90º

    Key Features

    • Connections: 1 1/4" pipe to 1 1/2" elbow
    • Elbow angle: 90°
    • Intended use: pump admission/suction line
    • Construction: steel connector (pump spares)
    • Compatibility: ABER bent‑axis / gear pump inlets
    Regular price £41.45
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  • Oil Filter Element - FRD09/16 - 235mm - 25 µm - Approved Hydraulics Limited
    Regular price £28.60
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    Oil Filter Element - FRD09/16 - 235mm - 25 µm

    Key Features

    • Length: 235 mm
    • Filtration rating: 25 µm (return/air filter element)
    • Series: FRD09/16 replacement element
    • Function: removes contaminants to protect hydraulic circuits
    • Δp guidance: assembly pressure drop < 0.5 bar (typical FRD)
    • Application: hydraulic tank return/air filtration
    Regular price £28.60
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    • Order by 3pm for Next Day Delivery
  • PTO; IVECO; 2840.6 - MECHANICAL
    Regular price £498.00
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    PTO; IVECO; 2840.6 - MECHANICAL

    Key Features

    • Use case: Power take off unit for driving hydraulic pumps on commercial vehicle gearboxes
    • 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 £498.00
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    • Order by 3pm for Next Day Delivery
  • ADMISSION CONNECTOR 1'' PIPE 2'' ELBOW 90º
    Regular price £39.22
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    ADMISSION CONNECTOR 1'' PIPE 2'' ELBOW 90º

    Key Features

    • Connections: 1" pipe to 2" elbow
    • Elbow angle: 90°
    • Intended use: pump admission / suction line
    • Form: elbow connector
    • Design: smooth radius to reduce inlet pressure loss
    • Compatibility: ABER pump suction fittings
    Regular price £39.22
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  • AIR/Breather Filter Element - FCD01 - 3 µm
    Regular price £16.68
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    AIR/Breather Filter Element - FCD01 - 3 µm

    Key Features

    • Type: air/breather filter element
    • Series: FCD01
    • Filtration rating: 3 µm
    • Function: filters intake air on hydraulic reservoir breather
    • Use: protects system from particulate ingress
    • Maintenance: replace during scheduled service or clogging
    Regular price £16.68
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  • ABER MECHANICAL SENSOR-2 PINS
    Regular price £33.34
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    ABER MECHANICAL SENSOR-2 PINS

    Key Features

    • Type: mechanical position/status sensor
    • Connector: 2 pins
    • Signal: on/off (binary) output
    • Use: PTO engaged/disengaged indication
    • Installation: screws into dedicated sensor port
    Regular price £33.34
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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.