• Hydra Part Riddle Buckets for 1T to 1.9T Machines - Approved Hydraulics

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    • Delivery to UK & Ireland

    Riddle Buckets for 1T to 1.9T Machines

    Key Features

    • Function: screening; riddling and separating oversize material on 1T to 1.9T carriers
    • Structure: ribbed skeleton with cross bars; open bottom to reduce weight
    • Rib spacing: configurable gap to match target material size
    • Material: wear plate construction for abrasion resistance
    • Use cases: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

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    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details
  • Hydra Part Riddle Buckets for 2T to 2.9T Machines - Approved Hydraulics

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    • All Items Guaranteed
    • Delivery to UK & Ireland

    Riddle Buckets for 2T to 2.9T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 2T to 2.9T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details
  • Hydra Part Riddle Buckets for 3T to 3.9T Machines - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Riddle Buckets for 3T to 3.9T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 3T to 3.9T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details
  • Hydra Part Riddle Buckets for 4T to 6T Machines - Approved Hydraulics

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    • All Items Guaranteed
    • Delivery to UK & Ireland

    Riddle Buckets for 4T to 6T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 4T to 6T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details
  • 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.

  • Hydra Part Riddle Buckets for 7T to 9T Machines - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Riddle Buckets for 7T to 9T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 7T to 9T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details
  • Hydra Part Riddle Buckets for 13T to 15T Machines - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Riddle Buckets for 13T to 15T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 13T to 15T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details
  • Hydra Part Riddle Buckets for 20T to 22T Machines - Approved Hydraulics

    POA

    • All Items Guaranteed
    • Delivery to UK & Ireland

    Riddle Buckets for 20T to 22T Machines

    Key Features

    • Function: screening; riddling and separating oversize on 20T to 22T carriers
    • Rib spacing: configurable bar gap to target particle size
    • Structure: skeleton rib design with cross-members for stiffness
    • Material: wear plate construction for abrasion resistance
    • Applications: landscaping; recycling; demolition clean-up
    • Mounting: pin-on or quick hitch compatible

    POA

    • Large UK Stock
    • 1 Year Limited Manufacturers Warranty
    • Bespoke Technical Advice
    View full details

Riddle Buckets for Professional Hydraulic Applications

Discover quality riddle buckets 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.