Today we are diving more into the power of water jet-cutting machines and their applications.

Water jets are versatile tools that use the force of pressurized water to cut and shape different materials; making them an invaluable technology in several industries. Now, let’s explore the basics of water jets, their applications, and the science behind their operation.

Parts of a Water Jet Cutter

A water jet cutting system typically consists of the following key components:

  1. Pump: The heart of any water jet cutting system is the high-pressure pump. It pressurizes water to extremely high levels, often exceeding 60,000 pounds per square inch. This immense pressure is essential for achieving precise and efficient cutting or cleaning.
  2. Nozzle: The nozzle is where the high-pressure water exits the system. It narrows the flow of water and directs it with precision. Water jet cutting nozzles come in various sizes and configurations for different applications.
  3. Orifice: Located within the nozzle, the orifice is a small hole where the water is focused into a high-speed jet. The size of the orifice can be adjusted to control the jet’s cutting power and accuracy.
  4. Abrasive Delivery System (Optional): For certain cutting applications, an abrasive material, often garnet, can be mixed with the high-pressure water to increase cutting efficiency. This abrasive mixture is delivered to the nozzle through a separate system.

How Water Jet Cutters Work

Water jets operate on a simple yet effective principle: the conversion of hydraulic energy into kinetic energy. Here’s how:

  1. Pressurization: The high-pressure pump pressurizes water to the desired level, creating a high-energy fluid.
  2. Nozzle Constriction: The pressurized water is directed through a small orifice within the nozzle, which constricts the flow and increases its velocity.
  3. Kinetic Energy: As the water exits the orifice, it transforms into a high-velocity jet with immense kinetic energy. This energy is harnessed for various applications, depending on the specific equipment and nozzle configuration.

Types of Water Jets

Water jets come in different types, each tailored to specific tasks The two main types for industrial production are:

  1. Pure Water Jets: These water jets are used for tasks like cutting softer materials such as foam, rubber, and food products. They don’t employ abrasive materials.
  2. Abrasive Water Jets (AWJ): In abrasive water jets, abrasive materials are introduced into the high-pressure water stream. This type is highly effective for cutting harder materials like metals, ceramics, and stone.

Applications of Water Jets

Water jets find a wide range of applications across diverse industries:

  1. Manufacturing: Water jet cutting is used to precisely cut materials like metal, plastic, and composites for manufacturing applications.
  2. Aerospace: Water jets can be used for cutting, shaping, and drilling components in the aerospace industry.
  3. Mining: Water jets are employed in mining operations for cutting and drilling hard rock.
  4. Food Industry: Water jets can cut and shape food products with precision, making them ideal for food processing.
  5. Art and Architecture: Water jets are used to create intricate designs in architecture and art, carving detailed patterns in stone or glass.

Benefits of Water Jets

Water jets offer several advantages, including:

  1. Precision: Water jets can achieve intricate cuts and patterns with high precision.
  2. Minimal Heat Generation: Water jets produce minimal heat during cutting, reducing the risk of material distortion.
  3. Versatility: Water jets can work with a wide range of materials and thicknesses.
  4. Safety: Water jet systems are relatively safe for operators and the environment, as they do not involve toxic chemicals or generate harmful dust, typically.

Disadvantages of Water Jets

While water jet cutting is a versatile and efficient technology with many advantages, it also has some disadvantages and limitations to consider:

  1. Initial Cost: The equipment required for water jet cutting can be expensive, including the high-pressure pump and cutting heads. This initial investment can be a barrier for some businesses.
  2. Operating Costs: The ongoing operating costs can be relatively high, particularly when using abrasive materials, as abrasive particles need to be replenished regularly.
  3. Slower Cutting Speed: Compared to some other cutting methods, water jet cutting can be slower, which may not be suitable for high-volume production environments.
  4. Edge Taper: Water jet cutting can produce a slight taper on the cut edges, which may not be suitable for applications requiring perfectly straight edges.
  5. Maintenance: Water jet cutting systems require regular maintenance to ensure they operate at peak efficiency and repairs or replacement of components can be costly.


In conclusion, water jets have become a fundamental tool in various industries due to their precision, and versatility. As technology continues to advance, we can expect water jet systems to find even more innovative applications in the future, further revolutionizing the way we cut and shape, various materials in an industrial setting. Moore Machine Tools has years of experience and expertise in choosing and installing the right cutting system in your facility. Reach out today to get your free quote started.