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Hydraulic Rotators & Links
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DOC 202 Side Arm Flail (2.4-2.8T Tractors)
POA
Key Features
DOC 201 Side Arm Flail (2-2.5T Tractors)
DOC 101 Side Arm Flail (1-2.5T Tractors)
HF1 Flail Hammers
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.
HF2 Flail Hammers
HF3 Flail Hammers
HF7-HF8 Flail Hammers (For FR70, FR90 & FR105 Models)
HF17 Flail Hammers
HF14 Flail Hammers
HF15 Flail Hammers
HF6 Flail Hammers (T11, T13REV, T15REV)
T3 Flail Spares
T5 Flail Spares
T1 Rev Flail Spares
T11 Flail Spares
T9 (DF & FS) Flail Spares
T9 (FR & MZ) Flail Spares
T7 Flail Spares
Femac Variseal Hydraulic Motor Shaft Seal For T1/T3/T5 8cc-11cc-16cc
Femac KM 30 (Casappa) Motor Vari Seal For T9 & T13 Flail (Shaft Seal Only)
1/2" Mulcher Valve For Femac Flails Max Low 60 LPM - Max Pressure 250 Bar
Chains for TE120p Rev forestal
flat Washer M16
Spacer 20mm x 4mm tube 25mm long
Discover quality femac from Approved Hydraulics, trusted by professionals across construction, transport, forestry, agriculture and industrial sectors. Our range includes reliable components and equipment designed for dependable performance, long service life and straightforward installation. 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.
