• ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1400 ADAPTOR, WITH TWO BEARINGS
    Regular price £166.55
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    ABER ISO (4 BOLTS) PTO TO OUTPUT SHAFT SAE 1400 ADAPTOR, WITH TWO BEARINGS

    Key Features

    • Input: ISO 4-bolt PTO interface
    • Output: SAE 1400 flange
    • 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 accessory drive via cardan shaft
    Regular price £166.55
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    • Order by 3pm for Next Day Delivery
  • 3/8" BSP Male x 1" BSP Male Adaptor
    Regular price £16.48
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    3/8" BSP Male x 1" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 3/8 to 1 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or adapt port sizes
    Regular price £16.48
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    • Order by 3pm for Next Day Delivery
  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £6.78
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    5/8" BSP Male x 5/8" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 5/8 to 5/8 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or adapt port sizes
    Regular price £6.78
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £6.59
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    1/8" BSP Male x 1/4" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/8 to 1/4 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £6.59
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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.

  • 1/2" BSP Male x 1/2" BSP Female Swivel Adaptor - Approved Hydraulics Limited
    Regular price £6.59
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    • Delivery to UK & Ireland

    1/4" BSP Male x 1/8" BSP Female Swivel Adaptor

    Key Features

    • Type: swivel adaptor (male to female)
    • Threads: 1/4 to 1/8 BSP
    • Swivel: captive nut allows hose connection without twisting
    • Seal: cone/washer seal depending on variant
    • Use: connect hoses where rotation during assembly is restricted
    Regular price £6.59
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP Male x 3/4"BSP Swivel Female x 3/4" BSP Male Branch Tee Adaptor
    Regular price £49.21
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    3/4" BSP Male x 3/4"BSP Swivel Female x 3/4" BSP Male Branch Tee Adaptor

    Key Features

    • Type: branch tee adaptor for hydraulic lines
    • Connections: BSP threading per title
    • Threads: 3/4 to 3/4 BSP
    • Standard: BSPP parallel per ISO 228 (female); bonded seal on male where applicable
    • Use: create auxiliary take-off while maintaining main flow
    Regular price £49.21
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    • Order by 3pm for Next Day Delivery
  • 5/8" BSP Male for Bonded Seal x 5/8" BSP Female Swivel 90° Compact Elbow
    Regular price £27.95
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    5/8" BSP Male for Bonded Seal x 5/8" BSP Female Swivel 90° Compact Elbow

    Key Features

    • Type: 90° elbow adaptor (male to male)
    • Threads: 5/8 to 5/8 BSP
    • Body: compact body for routing clearance
    • Construction: forged carbon steel; zinc plated
    • Use: change hose direction while maintaining service access
    Regular price £27.95
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  • 1/2" BSP Male x 1/2" BSP Female Swivel 45° Swept Elbow
    Regular price £11.84
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    1/2" BSP Male x 1/2" BSP Female Swivel 45° Swept Elbow

    Key Features

    • Type: 45° elbow adaptor
    • Threads: 1/2 to 1/2 BSP
    • Body: swept radius for tight routing
    • Construction: forged carbon steel; zinc plated
    • Use: directional change with lower pressure drop than 90°
    Regular price £11.84
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    • Delivery to UK & Ireland
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  • Support collar - Approved Hydraulics Limited
    Regular price £63.62
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    • Delivery to UK & Ireland

    Support collar

    Key Features

    • Component: support collar for cone splitter spindle
    • Function: axial location and bearing preload support
    • Material: hardened steel
    • Use: positions cone/hub relative to housing
    • Service: replacement wear part during overhaul
    Regular price £63.62
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cone Splitter Bearing Housing - Approved Hydraulics Limited
    Regular price £393.66
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    • Delivery to UK & Ireland

    Cone Splitter Bearing Housing

    Key Features

    • Component: bearing housing for cone splitter spindle
    • Function: supports tapered roller bearing and shaft seals
    • Material: machined steel housing
    • Use: service replacement for cone splitter assemblies
    • Notes: sized to match 33116 bearing and R23 shaft seal (series)
    Regular price £393.66
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    • Order by 3pm for Next Day Delivery
  • Cone splitter 200mm main cone
    Regular price £870.06
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    Cone splitter 200mm main cone

    Key Features

    • Component: main splitting cone
    • Cone diameter: 200 mm
    • Compatibility: AH630CS family
    • Tip: accepts removable hardened penetration tip
    • Body: alloy steel with deep spiral for bite and chip removal
    • Use: medium diameter log splitting; root reduction
    Regular price £870.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Approved Hydraulics Main Cone 250mm Diameter for 630 and 800 Cone Splitter Models - Approved Hydraulics Limited
    Regular price £1,176.06
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    Approved Hydraulics Main Cone 250mm Diameter for 630 and 800 Cone Splitter Models

    Key Features

    • Component: main splitting cone
    • Cone diameter: 250 mm
    • Compatibility: AH630CS and AH800CS models
    • Tip: accepts removable hardened penetration tip
    • Body: high tensile alloy steel with deep flight profile
    • Use: high output timber splitting on 6–16 t carriers
    Regular price £1,176.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cone splitter main drive shaft - Approved Hydraulics Limited
    Regular price £469.26
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    Cone splitter main drive shaft

    Key Features

    • Component: primary drive shaft for cone splitter
    • Strength: designed for high torque; compression and side loading
    • Machining: precision turned with keyway interface
    • Role: transmits motor torque to cone assembly
    • Material: heat-treated alloy steel
    Regular price £469.26
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £2.36
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    • Delivery to UK & Ireland

    3/8" BSP Male x 3/8" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 3/8 to 3/8 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or adapt port sizes
    Regular price £2.36
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 1/2" BSP X 1" BSPT Tapered ADAPTOR
    Regular price £14.32
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    • Delivery to UK & Ireland

    1/2" BSP X 1" BSPT Tapered ADAPTOR

    Key Features

    • Type: parallel-to-taper adaptor for BSP connections
    • Standards: BSPP (ISO 228) to BSPT (ISO 7) depending on ends
    • Threads: 1/2 to 1 BSP
    • Sealing: taper thread seals with thread sealant; parallel with washer/bonded seal
    • Use: connect tapered ports to parallel hose/valve fittings
    Regular price £14.32
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    • 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)
    Regular price £282.06
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    • 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
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/8" BSP Male x 1/2" BSP Male Adaptor - Approved Hydraulics Limited
    Regular price £7.55
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    • Delivery to UK & Ireland

    5/8" BSP Male x 3/4" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 5/8 to 3/4 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or adapt port sizes
    Regular price £7.55
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 5/8" BSP Male x 1" BSP Male Adaptor
    Regular price £13.40
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    • Delivery to UK & Ireland

    5/8" BSP Male x 1" BSP Male Adaptor

    Key Features

    • Type: straight adaptor (male to female)
    • Threads: 5/8 to 1 BSP
    • Standard: BSPP parallel per ISO 228 unless otherwise specified
    • Material: plated carbon steel for hydraulic service
    • Use: join hoses; valves; pipe runs or adapt port sizes
    Regular price £13.40
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 3/4" BSP X 3/4" BSPT Tapered Adaptor
    Regular price £6.92
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    • Delivery to UK & Ireland

    3/4" BSP X 3/4" BSPT Tapered Adaptor

    Key Features

    • Type: parallel-to-taper adaptor for BSP connections
    • Standards: BSPP (ISO 228) to BSPT (ISO 7) depending on ends
    • Threads: 3/4 to 3/4 BSP
    • Sealing: taper thread seals with thread sealant; parallel with washer/bonded seal
    • Use: connect tapered ports to parallel hose/valve fittings
    Regular price £6.92
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Atlas Crane Control Laver
    Regular price £62.46
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    • Delivery to UK & Ireland

    Atlas Crane Control Laver

    Key Features

    • Component: OEM control lever assembly
    • Use: precise operation of Atlas loader crane functions
    • Construction: ergonomic handle with robust linkage
    • Fitment: Atlas crane models per 3201123/related listings
    • Category: crane spares replacement part
    Regular price £62.46
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Atlas Crane Control Lever
    Regular price £62.46
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    • Delivery to UK & Ireland

    Atlas Crane Control Lever

    Key Features

    • Component: OEM control lever assembly
    • Use: precise operation of Atlas loader crane functions
    • Construction: ergonomic handle with robust linkage
    • Fitment: part number 3201145 listing (series dependent)
    • Category: crane spares replacement part
    Regular price £62.46
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Atlas Crane Control Lever No 3201167
    Regular price £62.46
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    • Delivery to UK & Ireland

    Atlas Crane Control Lever No 3201167

    Key Features

    • Component: OEM control lever assembly
    • Use: precise operation of Atlas loader crane functions
    • Construction: ergonomic handle with robust linkage
    • Fitment: compatible with Atlas crane models using 3201167 lever
    • Category: crane spares replacement part
    Regular price £62.46
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Washer - Approved Hydraulics Limited
    Regular price £3.64
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    Washer

    Key Features

    • Type: flat machine washer
    • Function: distributes clamping load under nut/bolt head
    • Material: zinc plated or stainless steel depending on spec
    • Use: link pins; baseplates; adaptors
    • Note: match to bolt grade and diameter
    Regular price £3.64
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • BR2 Top Bush 35mm dia - Approved Hydraulics Limited
    Regular price £18.73
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    BR3 Bush (40mm dia)

    Key Features

    • Component: replaceable bush for BR3 link
    • Bore size: 40 mm
    • Function: supports lower eye pin and spreads load
    • Material: hardened steel or bronze
    • Service: grease via nipples; check wear limits
    Regular price £18.73
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

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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.