• Out of Stock
    ABER ADMISSION CONNECTOR 1/14'' PIPE 2 STRAIGHT
    Regular price £23.92
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    ABER ADMISSION CONNECTOR 1/14'' PIPE 2 STRAIGHT

    Key Features

    • Component: pump admission connector
    • Connections: 1 1/4" pipe to 2" straight hose tail
    • Form: straight
    • Intended use: pump inlet/suction side
    • Design: smooth bore to minimise inlet losses
    • Compatibility: ABER pump suction fittings
    Regular price £23.92
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  • ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1100 ADAPTOR, WITH ONE BEARINGS
    Regular price £135.01
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    ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1100 ADAPTOR, WITH ONE BEARINGS

    Key Features

    • Input: ISO 4-bolt / 8-spline PTO
    • Output flange: SAE 1100
    • Support: single bearing
    • Purpose: convert close-coupled PTO to prop-shaft drive
    • Use: lighter-duty cardan shaft applications
    • Note: choose two-bearing versions for higher overhung loads
    Regular price £135.01
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  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £38.65
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    1 1/2 BSPm x 1 1/2 BSPm

    Key Features

    • Type: inline adaptor male to male
    • Threads: 1 1/2 BSP to 1 1/2 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or extend fittings
    Regular price £38.65
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  • placeholder
    Regular price £18.25
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    3/4 bspm x 1" bspf adaptor

    Key Features

    • Type: fixed male to female inline adaptor
    • Threads: 3/4 BSP male to 1 BSP female
    • Standard: BSPP parallel per ISO 228
    • Material: plated carbon steel
    • Use: reduce/enlarge port connection without swivel
    Regular price £18.25
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  • 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.

  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £35.34
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    1 1/" BSP Male - 1 1/2" BSP Male Adaptor

    Key Features

    • Type: inline adaptor male to male
    • Threads: 1 1/4 BSP to 1 1/2 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or extend fittings
    Regular price £35.34
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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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  • 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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  • Out of Stock
    Bini Rotary Coupling 4 port - 3/4" Bsp - 420 Bar
    Regular price £1,194.24
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    Bini Rotary Coupling 4 port - 3/4" Bsp - 420 Bar

    Key Features

    • Model: DA085-04 4-port coupling
    • Ports: 3/4" BSP threaded
    • Pressure rating: up to 420 bar
    • Use: fluid transfer between stationary and rotating parts
    • Note: data sheet available for detailed dimensions
    Regular price £1,194.24
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  • Bini Rotary Manifold DPC Series (8-18 Channels) - Approved Hydraulics

    POA

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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
    • Bespoke Technical Advice
  • Bini Rotary Manifold DM Series (7-11 Channels) - Approved Hydraulics

    POA

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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
    • Bespoke Technical Advice
  • Bini Rotary Manifold DI Series (2-18 Channels) - Approved Hydraulics

    POA

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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
    • Bespoke Technical Advice
  • Out of Stock
    ISO (4 BOLTS) PTO TO OUTPUT SHAFT DIN 100 ADAPTOR, WITH TWO BEARINGS
    Regular price £180.62
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    ISO (4 BOLTS) PTO TO OUTPUT SHAFT DIN 100 ADAPTOR, WITH TWO BEARINGS

    Key Features

    • Input: ISO 4-bolt / 8-spline PTO
    • Output flange: DIN 100
    • Support: two bearings for overhung load
    • Purpose: convert close-coupled PTO to prop-shaft drive
    • Benefit: reduces side-load on PTO and pump
    • Use: remote-mounted accessories via cardan shaft
    Regular price £180.62
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  • BYPASS VALVE TO WORK IN PUMPS OF 80cc/rot; 24 VDC
    Regular price £425.02
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    BYPASS VALVE TO WORK IN PUMPS OF 80cc/rot; 24 VDC

    Key Features

    • Model: BP80H (without relief)
    • Pump size: 80 cc/rotation
    • Solenoid: 24 VDC
    • Pressure class: up to 350 bar (family rating)
    • Function: unloads pump by bypassing to inlet
    • Mounting: bolts to pump end-cap; symmetrical orientation
    • Operation: actuate only at no-load (<20 bar)
    Regular price £425.02
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  • ABER Solenoid Operated Bypass Valve with Relief To Work In Pumps Of 80cc
    Regular price £543.83
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    ABER Solenoid Operated Bypass Valve with Relief To Work In Pumps Of 80cc

    Key Features

    • Model: BPR80H (with relief)
    • Pump size: 80 cc/rotation
    • Solenoid: 24 VDC
    • Pressure class: up to 350 bar (family rating)
    • Function: unloads pump and limits pressure via relief
    • Mounting: bolts to pump end-cap; symmetrical orientation
    • Operation: engage/disengage at no-load (<20 bar)
    Regular price £543.83
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  • GASKET FOR VK4029 QUILL SHAFT ADAPTOR
    Regular price £10.80
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    GASKET FOR VK4029 QUILL SHAFT ADAPTOR

    Key Features

    • Compatibility: ABER VK4029 TraXon quill adaptor
    • Role: sealing gasket for adaptor mounting
    • Prevents: oil leakage at PTO adaptor interface
    • Service: replace at each adaptor removal
    • Material: oil-resistant gasket composite
    Regular price £10.80
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  • SPLINED COUPLING OF SERIES 2 - 3 HOLES
    Regular price £26.92
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    SPLINED COUPLING OF SERIES 2 - 3 HOLES

    Key Features

    • Coupling type: splined half-coupling
    • Series: Group 2 (series 2)
    • Mounting: 3-hole pattern
    • Function: torque transfer between pump and drive
    • Material: hardened steel
    • Use: connect group 2 pump to multiplier or motor shaft
    Regular price £26.92
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  • 3 Ways Manual Diverter Valve 3/8", 60 l/min
    Regular price £62.44
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    3 Ways Manual Diverter Valve 3/8", 60 l/min

    Key Features

    • Type: 3-way manual diverter valve
    • Port size: 3/8" BSP
    • Max flow: 60 l/min
    • Pressure class: up to 350 bar (family rating)
    • Ports: P to pressure; A/B to circuit outlets
    • Operation: lever-actuated; mechanical detents
    • Use: direct flow to one of two outlets in mobile hydraulics
    Regular price £62.44
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  • Out of Stock
    FLANGE SAE 1100 DIN 5462
    Regular price £59.87
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    FLANGE SAE 1100 DIN 5462

    Key Features

    • Interface: SAE 1100 to DIN 5462
    • Spline specification: DIN 5462 A8x32x36
    • ABER reference: F1100
    • Type: cardan flange (spline bore)
    • Use: connect PTO/adaptor to prop shaft
    Regular price £59.87
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  • VACUUM KIT ; 24 VDC
    Regular price £210.28
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    VACUUM KIT ; 24 VDC

    Key Features

    • Type: vacuum actuation kit for PTOs
    • Supply voltage: 24 VDC
    • ABER reference: KVAC24
    • Function: actuates vacuum‑shift PTO engagement
    • Use: vehicle pneumatic/vacuum control systems
    • Alternative: KVAC12 (12 VDC) available
    Regular price £210.28
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  • PTO SCANIA GRS 905 1200NM SHAFT 620 mm; W/SENSOR
    Regular price £1,104.88
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    PTO SCANIA GRS 905 1200NM SHAFT 620 mm; W/SENSOR

    Key Features

    • Gearbox compatibility: Scania GRS905
    • Torque rating: 1200 Nm
    • Shaft length: 620 mm
    • PTO ratio: 1.1;1
    • Control: pneumatic
    • Sensor: included (with sensor)
    • ABER reference: TF10014P series
    Regular price £1,104.88
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  • PTO SCANIA GR875; GR905; GRS895; GRS905; W/SENSOR
    Regular price £574.40
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    PTO SCANIA GR875; GR905; GRS895; GRS905; W/SENSOR

    Key Features

    • Gearbox compatibility: Scania GR875/GR905/GRS895/GRS905
    • Control: pneumatic
    • PTO ratio: 1.1;33
    • Mounting: side‑mount orientation
    • Sensor: included (with sensor)
    • ABER reference: TF10017P series
    Regular price £574.40
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  • ALLISON PTO; CONSTANT DRIVE; FLANGE EN-ISSO; 1:0,74; LEFT ASSEMBLY
    Regular price £832.50
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    ALLISON PTO; CONSTANT DRIVE; FLANGE EN-ISSO; 1:0,74; LEFT ASSEMBLY

    Key Features

    • Transmission compatibility: Allison 10.16P RH (10‑bolt)
    • Control: constant mesh (live drive)
    • PTO ratio: 1.0;74
    • Assembly: left‑side
    • Output: EN (ISO 4‑bolt) flange
    • ABER reference: TF10A74MLEN
    Regular price £832.50
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  • ALLISON PTO; CONSTANT DRIVE; FLANGE EN-ISSO; 1:0,74; RIGHT ASSEMBLY
    Regular price £832.50
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    ALLISON PTO; CONSTANT DRIVE; FLANGE EN-ISSO; 1:0,74; RIGHT ASSEMBLY

    Key Features

    • Transmission compatibility: Allison 10.16P RH (10‑bolt)
    • Control: constant mesh (live drive)
    • PTO ratio: 1.0;74
    • Assembly: right‑side
    • Output: EN (ISO 4‑bolt) flange
    • ABER reference: TF10A74MREN
    Regular price £832.50
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  • PTO MITSUBISHI CANTER MO27S5,MECANICAL
    Regular price £368.58
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    PTO MITSUBISHI CANTER MO27S5,MECANICAL

    Key Features

    • Gearbox compatibility: Mitsubishi Fuso Canter MO27S5
    • Control: mechanical (lever/cable)
    • Mounting: side‑mount using 6‑bolt aperture
    • Pump interface: ISO 4‑bolt/8‑spline
    • Kit contents: studs;nuts;gasket (typical)
    • Power rating: ~20 hp typical
    Regular price £368.58
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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.