• T1 Rev Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T1 Rev Flail Spares

    Key Features

    • Compatibility: t1 rev 1.0-3.0 t excavators
    • Typical items: hammers ; knife sets ; belts ; bearings ; shaft seals
    • Rotor widths: 60 cm ; 70 cm ; 80 cm options
    • Note: verify serial no. ; rotor code before ordering
    • Bearings: double-row spherical rotor bearings available

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    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • T3 Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T3 Flail Spares

    Key Features

    • Compatibility: t3 1.5-5.0 t excavator heads
    • Typical items: hammers ; belts ; end bearings ; roller kits ; motor seals
    • Widths: 70 cm ; 90 cm ; 105 cm options
    • Note: spec varies by rotor ; supply p/n for exact match
    • Bearings: double-row spherical rotor bearings available

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    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • T5 Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T5 Flail Spares

    Key Features

    • Compatibility: t5 4.0-6.0 t excavator heads
    • Typical items: hammer kits ; group 3 gear motors 22 ; 27 ; 34 cc ; belts
    • Rotor: helical with austempered hammers
    • Note: confirm rotor and motor code before order
    • Fasteners: hammer bolts ; lock nuts ; bushes supplied as kits

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    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • T7 Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T7 Flail Spares

    Key Features

    • Compatibility: t7 5.0-8.0 t excavator heads
    • Typical items: hammer sets ; belts ; roller kits ; group 3 motors 22 ; 27 ; 34 cc
    • Widths: 105 cm ; 125 cm heads
    • Note: verify rotor code ; motor displacement when ordering
    • Service: oem quality parts and kits available

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Team Member

    Adam Hindle

    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.

  • T9 (FR & MZ) Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T9 (FR & MZ) Flail Spares

    Key Features

    • Compatibility: t9 heads with fr ; mz rotors
    • Typical items: hammer kits ; knives ; belts ; bearings ; seals
    • Rotor notes: fr heavy hammer rotor ; mz grass/knife rotor
    • Widths: 105 cm ; 125 cm heads
    • Check: confirm rotor type ; lug spacing before order

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • T9 (DF & FS) Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T9 (DF & FS) Flail Spares

    Key Features

    • Compatibility: t9 heads with df ; fs rotors
    • Typical items: fixed teeth ; tool holders ; bolts ; belts ; bearings
    • Rotor notes: df fixed-tooth forestry ; fs smooth cut knife
    • Check: match tooth pattern ; holder type to rotor
    • Service: stock replacement wear parts available

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    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • T11 Flail Spares - Approved Hydraulics Limited

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    • Delivery to UK & Ireland

    T11 Flail Spares

    Key Features

    • Compatibility: t11 6.0-12.0 t excavator heads
    • Typical items: hammer kits ; belts ; end bearings ; seals ; roller kits
    • Rotor: fr heavy hammer ; fs knife ; df fixed tooth options
    • Note: confirm rotor and head width when ordering
    • Service: oem quality parts supplied

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Out of Stock
    1/2" Mulcher Valve For Femac Flails Max Low 60 LPM - Max Pressure 250 Bar
    Regular price £708.06
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    • Delivery to UK & Ireland

    1/2" Mulcher Valve For Femac Flails Max Low 60 LPM - Max Pressure 250 Bar

    Key Features

    • Port size: 1/2"
    • Max flow: 60 l/min
    • Max pressure: 250 bar
    • Function: mulcher protection valve ; anti-cavitation ; overpressure relief
    • Use: protect hydraulic motor on flail heads
    Regular price £708.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Femac Spares & Accessories for Professional Hydraulic Applications

Discover quality femac spares & accessories 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.

Common Calculations FAQs

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.