• Intermercato TVG 1000 Bucket Grab - Approved Hydraulics

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    TVG 1000 Bucket Grab

    Key Features

    • Type: heavy duty clamshell bucket grab
    • Volume: around 500 litre class (TVG 1000)
    • Frame: extra heavy duty top H frame with ram protection lugs
    • Hydraulics: cylinder with check valve ; independent oil tank per model
    • Edges: reversible toe plates ; wide opening
    • Use: soil ; gravel ; rubble ; loose material loading

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  • Intermercato TMC & TMC-O 40-80 Clamshell Buckets

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    Intermercato TMC & TMC-O 40-80 Clamshell Buckets

    Key Features

    • Specification: Double guide bars
    • High tensile wear resistant steel (: 400 HB)
    • Notes: Specification information is limited in source listing; confirm dimensions and compatibility before purchase
    • Notes: Details not stated
    • Notes: Details not stated

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  • TCB Clamshell Buckets

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    TCB Clamshell Buckets

    Key Features

    • Type: clamshell for digging ; loading
    • Edges: welded hardox cutting edges
    • Guides: double guide bars
    • Cylinder: high pressure with double piston rod seals
    • Valve: pilot operated check valve
    • Mounting: with rotator ; link
    • Applications: construction ; forestry ; recycling

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  • TGO 500-1000 Clamshell Buckets

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    TGO 500-1000 Clamshell Buckets

    Key Features

    • Range: tgo 500 ; 650 ; 800 ; 900 ; 1000 models
    • Design: open clamshell with optional side plates
    • Rigidity: shafts through full body width
    • Guides: double guide bars
    • Use: universal bucket for loose material

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  • 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.

  • Minelli MBV Clamshell Buckets - Approved Hydraulics

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    MBV Clamshell Buckets

    Key Features

    • Type: compact clamshell bucket
    • Application: ditch cleaning ; agriculture ; tank maintenance
    • Rotation: compatible with 360 degree continuous rotator
    • Edges: wear edges ; toe plates
    • Use: fine grained material re handling

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  • Minelli MBO Clamshell Buckets - Approved Hydraulics

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    MBO Clamshell Buckets

    Key Features

    • Type: clamshell re handling bucket
    • Material: Hardox wear resistant steel shells
    • Safety: integrated over center valve to hold load on hose failure
    • Rotation: optional 360 degree continuous hydraulic rotator
    • Edges: bolt on reversible cutting edges or toe plates
    • Use: aggregates ; sand ; soil ; bulk handling

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  • Minelli MBO (HY) Clamshell Buckets - Approved Hydraulics

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    MBO (HY) Clamshell Buckets

    Key Features

    • Type: clamshell re handling bucket
    • Actuation: full hydraulic operation with robust cylinder
    • Material: Hardox wear resistant steel shells
    • Safety: integrated over center valve to hold load on hose failure
    • Rotation: optional 360 degree continuous hydraulic rotator
    • Edges: bolt on reversible cutting edges or toe plates
    • Use: aggregates ; sand ; soil ; bulk handling

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  • Minelli MBO (H) Clamshell Buckets - Approved Hydraulics

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    MBO (H) Clamshell Buckets

    Key Features

    • Type: clamshell re handling bucket
    • Material: Hardox wear resistant steel shells
    • Structure: heavy duty chassis with large diameter cylinder
    • Safety: integrated over center valve to hold load on hose failure
    • Rotation: optional 360 degree continuous hydraulic rotator
    • Edges: bolt on reversible cutting edges or toe plates
    • Use: aggregates ; sand ; soil ; bulk handling

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  • Minelli MBB Clamshell Buckets - Approved Hydraulics

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    MBB Clamshell Buckets

    Key Features

    • Type: clamshell bucket grab standard duty
    • Cylinders: double acting cylinder with check valve
    • Edges: wear edges and toe plates
    • Rotation: optional rotator interface
    • Use: aggregates ; sand ; soil ; loading

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  • Minelli MBB (H) Clamshell Bucket - Approved Hydraulics

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    MBB (H) Clamshell Bucket

    Key Features

    • Type: clamshell bucket grab heavy duty
    • Cylinders: double acting cylinder with check valve
    • Edges: wear edges and toe plates
    • Rotation: optional rotator interface
    • Use: aggregates ; sand ; soil ; loading

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  • Minelli MBV (FS) Clamshell Buckets - Approved Hydraulics

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    MBV (FS) Clamshell Buckets

    Key Features

    • Type: compact clamshell bucket
    • Design: variant optimised for truck Z fold cranes
    • Application: ditch cleaning ; agriculture ; tank maintenance
    • Rotation: compatible with 360 degree continuous rotator
    • Edges: wear edges ; toe plates
    • Use: fine grained material re handling

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  • Minelli MBV (S) Clamshell Buckets - Approved Hydraulics

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    MBV (S) Clamshell Buckets

    Key Features

    • Type: compact clamshell bucket
    • Mechanics: two rope mechanical variant for cable cranes
    • Application: ditch cleaning ; agriculture ; tank maintenance
    • Rotation: compatible with 360 degree continuous rotator
    • Edges: wear edges ; toe plates
    • Use: fine grained material re handling

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  • CMB BBC Clamshell Buckets - Approved Hydraulics Limited

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    CMB BBC Clamshell Buckets

    Key Features

    • Clamping performance: High clamping force
    • Structural build: Robust and reliable frame
    • Compact cylinder layout: Horizontal cylinder to reduce overall height
    • Hydraulic protection: Fully protected hydraulic components
    • Rotation options: 360° Indexator rotator or GR rotator
    • Sealing option: Viton seals (optional)
    • Wear components: Hardened pins and bushings (with spiroil)
    • Material upgrade: Hardox parts available on request
    • Model range / machine size: 12 models for excavators from 6–12 t up to 26–34
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice

Clamshell Bucket Grabs

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.