• Intermercato GX Tined Grapples

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato GX Tined Grapples

    Key Features

    • Series: GX Range
    • Design: Extra reinforced body for rigid mounting
    • Cylinder: high pressure ; double piston rod seals
    • Material: Hardox
    • Tine Options: 5 & 7 tine
    • Power: Extremely powerful/strong jaws
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG SR Tined Grapples

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG SR Tined Grapples

    Key Features

    • Series: TG SR Range
    • Design: Extra reinforced body for rigid mounting
    • Cylinder: high pressure ; double piston rod seals
    • Material: Hardox wear plate
    • Tine Options: 3 to 13+ tine
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Femac T15 REV Range - 10T-25T - Approved Hydraulics Limited

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Femac T15 REV Range - 10T-25T

    Key Features

    • Carrier range: excavators 10.0-25.0 ton
    • Head: reversible layout; heavy duty construction
    • Transmission: direct drive
    • Valve block: priority valve; anti-shock; anti-cavitation
    • Rotor: helical; hammers or blades
    • Applications: heavy vegetation management; roadside clearance

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • On Sale
    CRR20 Rail Cutters (Used & Refurbished) - Approved Hydraulics Limited
    Regular price £44,000.00
    Regular price £64,924.00 Sale price Saving 32%
    • All Items Guaranteed
    • Delivery to UK & Ireland

    CRR20 Rail Cutters (Used & Refurbished)

    Key Features

    • Application: cutting european rail ; tram tracks
    • Rotation: 360° continuous hydraulic
    • Frame: strenx 700; mobile jaw hytaf
    • Blades: reversible ; turnable
    • Operating pressure: ≈260 bar typical
    • Carrier: 20-35 t excavators
    Regular price £44,000.00
    Regular price £64,924.00 Sale price Saving 32%
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • 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 MPR Rail Grabs - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    MPR Rail Grabs

    Key Features

    • Type: rail handling grab
    • Clamp: jaw profile for rail sections and sleepers
    • Hydraulics: high clamping force for precise placement
    • Rotation: optional 360 degree rotator
    • Use: rail installation ; maintenance ; material handling

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG S Heavy Duty Range

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG S Heavy Duty Range

    Key Features

    • Series: TG-S Heavy Duty Range
    • Design: Optimized roll in ; roll out
    • Cylinder: High pressure ; double piston rod seals
    • Material: Hardox
    • Jaw: Standard log grapple jaw
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG EG Selector Grabs

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG EG Selector Grabs

    Key Features

    • Series: TG EG Range
    • Design: Extra reinforced body for rigid mounting
    • Cylinder: High pressure ; double piston rod seals
    • Material: Hardox
    • Safety: Accumulator & check valve as standard
    • Mounting: Tilt rotator, rigid rotator, pendant rotator
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG DG Selector Grabs

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG DG Selector Grabs

    Key Features

    • Series: TG DG Range
    • Design: Extra reinforced body / Torsionally rigid
    • Cylinder: Oversized, High pressure ; double piston rod seals
    • Material: Hardox
    • Safety: Check valve as standard
    • Durability: BWG bushings for extra durability
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG PG Pole Grapples

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG PG Pole Grapples

    Key Features

    • Series: TG PG Range
    • Design: Extra reinforced body for rigid mounting
    • Cylinder: high pressure ; double piston rod seals
    • Material: Hardox
    • Tine: Poly lined 7 tine
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG MP Multi-purpose Grabs

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG MP Multi-purpose Grabs

    Key Features

    • Series: TG MP Range
    • Design: Extra reinforced body / Torsionally rigid
    • Cylinder: Oversized, High pressure ; double piston rod seals
    • Material: Hardox
    • Safety: Check valve as standard
    • Durability: BWG bushings for extra durability
    • Jaws: Muti-purpose jaws with reversible teeth
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • CMB BBC Clamshell Buckets - Approved Hydraulics Limited

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    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
  • Minelli MBV (FS) Clamshell Buckets - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    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

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Minelli MBV (S) Clamshell Buckets - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    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

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Minelli MPT Rail Grabs - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    MPT Rail Grabs

    Key Features

    • Type: rail handling grab
    • Clamp: jaw profile for rail sections and sleepers
    • Hydraulics: high clamping force for precise placement
    • Rotation: optional 360 degree rotator
    • Use: rail installation ; maintenance ; material handling

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Minelli MPP R Rail Grabs - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    MPP R Rail Grabs

    Key Features

    • Type: rail handling grab
    • Clamp: jaw profile for rail sections and sleepers
    • Hydraulics: high clamping force for precise placement
    • Rotation: optional 360 degree rotator
    • Use: rail installation ; maintenance ; material handling

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG Standard Range for Cranes

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG Standard Range for Cranes

    Key Features

    • Series: TG Standard Range
    • Design: Optimized roll in ; roll out
    • Cylinder: High pressure ; double piston rod seals
    • Material: Hardox
    • Jaw: Standard log grapple jaw
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Minelli MBV Clamshell Buckets - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    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

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
  • Intermercato TG Ultra Log Grapples

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Intermercato TG Ultra Log Grapples

    Key Features

    • Series: TG Ultra
    • Design: Optimized roll in- roll out properties
    • Cylinder: high pressure ; double piston rod seals
    • Material: Strenx 900
    • Advantage: High strength to weight ratio
    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice

Rail Attachments for Excavators

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.