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Hydraulic Rotators & Links
Worm Drives Units & Rotary Manifolds
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Hydraulic rotator Low built G-rotor Rotator For Excavators Up To 20 ton
POA
Key Features
Indexator Rotator Seal Kit GV6 GV/AV 6
Intermercato GRX Log Grab
Intermercato GRX Sorting Grab
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.
Intermercato GRX Tined Grab
Intermercato GX Tined Grapples
Intermercato Hydraulic Rotator Compact Design For Excavators Up To 3 Ton Rigid Mounting
Intermercato Intelligent Weighing System 100 SHV
Intermercato Intelligent Weighing System 50 SHV
Intermercato Intelligent Weighing System 50F
Intermercato Intelligent Weighing System 70 BS
Intermercato Intelligent Weighing System Compact 15MH
Intermercato Intelligent Weighing System Compact FR 5
Intermercato RMR6C Rigid Rotator Low built G-rotor Rotator for excavators up to 6 ton
Intermercato Saw Grapples
Intermercato seal kit for RX 120-390 rotator
Intermercato T-Cut Tree Shear with Rotation
Intermercato T-Cut Tree Shear without Rotation
Intermercato TC Tree Shears with or without Rotation
Intermercato TG DG Selector Grabs
Intermercato TG EG Selector Grabs
Intermercato TG MP Multi-purpose Grabs
Intermercato TG PG Pole Grapples
Intermercato TG S Heavy Duty Range
Approved Hydraulics are proud to be the sole UK agent for Intermercato forestry and material handling attachments (Sweden’s Premier grab Manufacturer). The range offers standard CLAMSHELL grabs, LOG grapples and Tine grapples for cranes and excavators along with a full range of hydraulic TREE SHEARS both with and without rotation.
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.
