• CMB PWE Series Tree Shear

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    CMB PWE Series Tree Shear

    Key Features

    • Low maintenance: Reduced wear and service needs
    • HD reinforced frame: Built for heavy-duty work
    • Fixed-blade system: Simple, robust blade setup
    • Hardened pins & spiroil bushings: Longer wear life under load
    • Hydraulic rotation (3 options): Controlled positioning and felling
    • Optional Multigrip + autospeed: Better collecting and handling
    • Blade cylinder with brake: Controlled cutting cycle
    • Heavy-duty seals: Protected hydraulics, longer life

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TC Tree Shears with or without Rotation

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TC Tree Shears with or without Rotation

    Key Features

    • Type: hydraulic tree shear for felling and trimming
    • Mounting: excavator oriented design on E models
    • Blade: high strength replaceable cutting blade
    • Frame: extra reinforced body for rigid mounting
    • Guides: double guide bars for stability
    • Material: high tensile Hardox wear resistant steel
    • Use: forestry maintenance ; site clearance
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato T-Cut Tree Shear with Rotation

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato T-Cut Tree Shear with Rotation

    Key Features

    • Type: Hydraulic tree shear
    • Rotation: Worm Drive (single/double motor)
    • Blade: Hardox 450 replaceable cutting blade
    • Frame: Extra reinforced Hardox body
    • Uses: Felling, trimming & de-limbing
    • Cutting: Extremely robust tree shear that cuts from both sides
    • Bushes: BWG-bushings with special alloy for extra durability
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato T-Cut Tree Shear without Rotation

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato T-Cut Tree Shear without Rotation

    Key Features

    • Type: Hydraulic tree shear
    • Blade: Hardox 450 replaceable cutting blade
    • Frame: Extra reinforced Hardox body
    • Uses: Felling, trimming and land clearance
    • Cutting: Extremely robust tree shear that cuts from both sides
    • Bushes: BWG-bushings with special alloy for extra durability
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • 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.

Tree Shears

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.