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Hydraulic Rotators & Links
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Anti-Clockwise Group 2 Tandem Hydraulic Pumps - Front
Key Features
Anti-clockwise Group 2 Tandem Hydraulic Pumps - Rear
Approved Hydraulics Cap
Approved Hydraulics Main Cone 250mm Diameter for 630 and 800 Cone Splitter Models
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.
Atlas Crane Control Laver
Atlas Crane Control Lever
Atlas Crane Control Lever No 3201167
AV800CS Hydraulic Cone Splitter
POA
BALL VALVE 1" 1/2; BSP; MALE - FEMALE (BRASS)
Balt GR 55 M hose guard
BALTGRS16S Rotator
Baltrotor Gr30 Hose guard
Baltrotor Seal Kit - GR30, GR30A, GR30PF
Baltrotor Steel Sleeve - 28mm Bush Assy Complete (Pair)
Baltrotor Steel Sleeve - 30mm Bush Assembly Complete (Pair)
Baltrotors BR1 Bushing 28mm ID (HMF cranes)
Baltrotors Bronze Bush - 45mm (Pair)
Baltrotors CPR 8 Quad Ring Seal For Adaptor Plate
Baltrotors CPR9-04ST Rigid Rotator With Holding Brake function With 5 x Through Functions.
Baltrotors GR 105 DB rotator top head
Baltrotors Gr30 X type hose guard
Baltrotors HR12SM + HR1SM6 rotator seal kit
Baltrotors Seal Kit - GR104, GR105, GR110-1, GR110-2
Baltrotors Seal Kit - GR46, 46A, 463, 465
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.
