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Hydraulic Rotators & Links
Worm Drives Units & Rotary Manifolds
Excavator & Crane Attachments
Forestry Attachments
Rail Attachments
Demolition Attachments
Subsea Attachments
Tractor Attachments
Wireless Weigh Scales
Timber Processing
Mining & Quarry
Directional Control Valves
Line Mounted Valves
Hydraulic Cylinders
Hydraulic Pumps
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Power Packs
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Remote Controls
Worm Drives & Rotary Manifolds
Oils & Lubricants
Hydraulic Oil Tanks
Stabiliser Pads & Storage Cages
All Other Equipment
Series 800 Crutch Cylinders
POA
Key Features
Series 880 Crutch Cylinders
shaft collar 45mm
Shaft Collar 50mm
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 60mm
shaft collar 65mm
Shim for valve sections 100/150 Ltr
Shim for valve sections 50/80 Ltr
Side Mounted Aluminium Oil Tanks (150L, 180L, 200L, 220L, 235L, 250L, 290L)
Side Mounted Aluminium Oil Tanks With Filter (100 Litre)
Side Mounted Steel Hydraulic Oil Tanks With Filter (15L-60L)
Side Mounted Steel Oil Tanks With 25 Micron Filter Assembly (80L-250L)
Single Acting Spool On 'A' Port for AK50 Control Valve
Single Acting/Tipper Hydraulic Power Packs - 1.6kW - 2 Button Pendant Control - 160 Bar Preset
Single Counter Balance / Overcentre Valve 1/2" IN LINE Steel Body 100-350 Bar 4.2:1 Pilot Ratio
Single Counter Balance / Overcentre Valve 3/8" IN LINE Ally Body 100 - 350 bar 4.2:1 Ratio
Single Counter Balance / Overcentre Valve 3/8" IN LINE Steel Body 100-350 Bar 1:8 Pilot Ratio
Single Counterbalance Valve 3/8" In Line - 100-350Bar
SM Series Demolition Grabs
Solenoid for Mini Power Pack NC and NO Cartridges with Connector
Solenoid Operated 3/4" Check Valve N/C In Both Directions 100 LPM Max Flow and Working Pressure 350 Bar - 24V DC.
Solenoid Operated Check Valves - Pilot Operated - 40 L/Min - 350bar
Solenoid Operated Check Valves - Pilot Operated - 70 L/min - 350bar - Checked in 1 Direction Only
Solenoid Operated Check Valves - Pilot Operated - 70 L/min - 350bar - Checked in BOTH Directions
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.
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.
