• T-CUT25 Replacement Knife
    Regular price £812.06
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    T-CUT25 Replacement Knife

    Key Features

    • Model: T-CUT25
    • Type: replacement knife
    • Material: hardened steel
    • Use: cutting vegetation ; saw style head
    • Notes: replace in matched sets ; observe torque for bolts
    Regular price £812.06
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    • Order by 3pm for Next Day Delivery
  • T-Cut25 Spares - Approved Hydraulics Limited

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    T-Cut25 Spares

    Key Features

    • Compatibility: intermercato t-cut 25 tree shear
    • Typical items: replacement knife ; bolt kit ; bushes
    • Knife bolts kit: countersunk bolts x10 ; nuts x10 ; washers x10
    • Note: quote serial to match parts
    • Application: hydraulic attachment component

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  • T-CUT30 Bolt Kit for Replacement Knife
    Regular price £25.02
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    T-CUT30 Bolt Kit for Replacement Knife

    Key Features

    • Model: T-CUT30
    • Type: replacement knife
    • Material: hardened steel
    • Use: cutting vegetation ; saw style head
    • Notes: replace in matched sets ; observe torque for bolts
    Regular price £25.02
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    • Order by 3pm for Next Day Delivery
  • T-CUT30 Replacement Knife - Approved Hydraulics Limited
    Regular price £1,000.07
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    T-CUT30 Replacement Knife

    Key Features

    • Model: T-CUT30
    • Type: replacement knife
    • Material: hardened steel
    • Use: cutting vegetation ; saw style head
    • Notes: replace in matched sets ; observe torque for bolts
    Regular price £1,000.07
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    • Delivery to UK & Ireland
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  • 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.

  • T-Cut30 Spares - Approved Hydraulics Limited

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    T-Cut30 Spares

    Key Features

    • Type: tree shear service kit
    • Compatibility: per T Cut or Tiger Cut model stated
    • Contents: pins ; bushes ; blades or guards as applicable
    • Benefit: restores cutting geometry and clamp force
    • Use: scheduled service or damage repair

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  • T-Cut30 Spares - Approved Hydraulics Limited

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    T-Cut30 Spares

    Key Features

    • Type: tree shear service kit
    • Compatibility: per T Cut or Tiger Cut model stated
    • Contents: pins ; bushes ; blades or guards as applicable
    • Benefit: restores cutting geometry and clamp force
    • Use: scheduled service or damage repair
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
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  • T-CUT40 Bolt Kit for Replacement Knife - Approved Hydraulics Limited

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    T-CUT40 Bolt Kit for Replacement Knife

    Key Features

    • Model: T-CUT40
    • Type: replacement knife
    • Material: hardened steel
    • Use: cutting vegetation ; saw style head
    • Notes: replace in matched sets ; observe torque for bolts

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  • T-CUT40 Replacement Knife - Approved Hydraulics Limited
    Regular price £1,372.07
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    T-CUT40 Replacement Knife

    Key Features

    • Model: T-CUT40
    • Type: replacement knife
    • Material: hardened steel
    • Use: cutting vegetation ; saw style head
    • Notes: replace in matched sets ; observe torque for bolts
    Regular price £1,372.07
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • T-CUT40 Spares - Approved Hydraulics Limited

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    T-CUT40 Spares

    Key Features

    • Model: T-CUT40
    • Scope: general spares
    • Typical items: knives ; bolt kits ; guards ; bearings
    • Note: quote serial for exact parts
    • Application: hydraulic attachment component

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  • T1 hammer bracket (Pair)
    Regular price £28.86
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    T1 hammer bracket (Pair)

    Key Features

    • Compatibility: t1 flail head
    • Kit: pair
    • Function: retains hammer to rotor lug
    • Material: steel ; heat treated
    • Use: grass ; light scrub applications
    Regular price £28.86
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  • T1 KF1 Blades - Sold Individually
    Regular price £9.14
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    T1 KF1 Blades - Sold Individually

    Key Features

    • Compatibility: t1 head
    • Type: kf1 cutting blade
    • Sale: sold individually
    • Use: grass ; hedging
    • Application: hydraulic attachment component
    Regular price £9.14
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • T1 Rev Flail Spares - Approved Hydraulics Limited

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    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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  • T11 Flail Spares - Approved Hydraulics Limited

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    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

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  • T3 Flail Spares - Approved Hydraulics Limited

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    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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  • T5 Flail Spares - Approved Hydraulics Limited

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    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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  • T7 Flail Spares - Approved Hydraulics Limited

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    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

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    • 1 Year Limited Manufacturers Warranty
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  • T9 (DF & FS) Flail Spares - Approved Hydraulics Limited

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

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    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

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    • 1 Year Limited Manufacturers Warranty
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  • Tamper proof cap M10 - RED color
    Regular price £1.28
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    Tamper proof cap M10 - RED color

    Key Features

    • Type: tamper-proof cap for valve adjusters
    • Thread: M10
    • Colour: red for quick identification
    • Function: prevents unauthorised adjustment
    • Material: durable polymer or plated steel per variant
    Regular price £1.28
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Tamper Proof Cap M20-M22 - RED Color
    Regular price £2.78
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    Tamper Proof Cap M20-M22 - RED Color

    Key Features

    • Type: tamper-proof cap for valve adjusters
    • Thread: M20 interface
    • Colour: red for quick identification
    • Function: prevents unauthorised adjustment and seals setting
    • Material: durable polymer or plated steel per variant
    Regular price £2.78
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Tamper proof cap M8 - RED Color
    Regular price £1.28
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    • Delivery to UK & Ireland

    Tamper proof cap M8 - RED Color

    Key Features

    • Type: tamper-proof cap for valve adjusters
    • Thread: M10
    • Colour: red for quick identification
    • Function: prevents unauthorised adjustment
    • Material: durable polymer or plated steel per variant
    Regular price £1.28
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Tandem Hydraulic Pump Assembly 4.5cc - 25cc (Anti-Clockwise) - Approved Hydraulics Limited

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    Tandem Hydraulic Pump Assembly 4.5cc - 25cc (Anti-Clockwise)

    Key Features

    • Type: tandem hydraulic pump assembly
    • Displacement: 4.5 to 25 cc per rev per section
    • Rotation: anti clockwise
    • Ports: bspp
    • Use: compact dual circuit pump drive

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  • Tandem Hydraulic Pump Assembly 4.5cc - 25cc- Clockwise - Approved Hydraulics Limited

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    Tandem Hydraulic Pump Assembly 4.5cc - 25cc- Clockwise

    Key Features

    • Configuration: Group 2 tandem external gear pump
    • Displacement range: Front 4.5 cc/rev up to rear 25 cc/rev options
    • Rotation: Clockwise
    • Shaft ; flange: 1/8 taper ; 4 bolt European flange
    • Ports: BSPP threaded or flanged options by build
    • Max pressure: Up to 250 bar depending on size
    • Use: Dual circuit supply for steering ; work hydraulics

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  • placeholder

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    Tandem Hydraulic Pump Assembly 4.5cc - 25cc- Clockwise

    Key Features

    • Configuration: Group 2 tandem external gear pump
    • Displacement range: Front 4.5 cc/rev up to rear 25 cc/rev options
    • Rotation: Clockwise
    • Shaft ; flange: 1/8 taper ; 4 bolt European flange
    • Ports: BSPP threaded or flanged options by build
    • Max pressure: Up to 250 bar depending on size
    • Use: Dual circuit supply for steering ; work hydraulics
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice

All for Professional Hydraulic Applications

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.

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.