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Hydraulic Rotators & Links
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Hydraulic Cylinder Spares
Double Acting Hydraulic Cylinder 25mm Bore Rams
Key Features
Double Acting Hydraulic Cylinder 32mm Bore Rams
Double Acting Hydraulic Cylinder 40mm Bore Rams
Double Acting Hydraulic Cylinder 50mm Bore Rams
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.
Double Acting Hydraulic Cylinder 60mm Bore Rams
Double Acting Hydraulic Cylinder 70mm Bore Rams
Double Acting Hydraulic Cylinder 80mm Bore Rams
Double Acting Hydraulic Cylinder 90mm Bore Rams
Double Acting Hydraulic Cylinder 100mm Bore Rams
Our standard hydraulic cylinders from Approved Hydraulics give you years of reliable, hard-wearing performance, guaranteed to get the most out of your hydraulic system. Our extensive range covers cylinders from 25mm bore to 100mm bore and from 50mm stroke to 1000mm stroke, with a selection of hydraulic rams designed to deliver superior stability and performance.
Discover an extensive range of standard hydraulic cylinders here at Approved Hydraulics, with a leading selection of high-quality products from trusted manufacturers Hydra Part.
You’ll find a wide selection of hydraulic rams that offer high performance in our stock. With the inclusion of a standard hydraulic cylinder, you’ll benefit from excellent stability and performance.
This superior functionality is down to the large cast rear nut towards the back of the piston. Rather than the standard Nyloc nut favoured by most manufacturers, we wrap this component with an additional wear band that increases the piston’s surface area length inside the hydraulic ram. These factors are what sets our hydraulic cylinders apart from most manufacturers.
Hydra Part Hydraulic rams are manufactured using the very latest in CNC and computer controlled engineering processes. The standard range covers cylinders from 25mm bore to 100mm bore and from 50mm stroke to 1000mm stroke.
A main advantage of the hydra-part cylinders from most manufactures is the use of a large cast rear nut at the back of the piston that is rapped with an extra wear band opposed to a standard Nyloc nut that most use.
This added wear strip increases the length of the piston surface area inside the ram and adds great stability during the movement process.
Besides the standard ram range Hydra-Part also produce bespoke customer rams to customer drawing. As a standard at the factory, they can produce rams with 800mm bore and 8 meters long. Only after this do they begin to class it as a special build!
For related products, browse our wide choice of standard hydraulic equipment.
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.
