Significant cost and operational advantage over alternate methods of sludge elevation and transport.

SPIROLIFT® Vertical Shaftless Spiral Conveying Technology

SPIRAC is the global leader in vertical sludge conveying with hundreds of SPIROLIFT®  installations worldwide. This proven technology offers significant cost and operational advantage over alternate methods of sludge elevation and transport.

SPIROLIFT® vertical conveyors feature an octagonal trough and liner. The breaks in the liner provide a resistance point which helps to prevent slippery materials from forming a rotating plug, thereby encouraging the material to move vertically with the spiral face. Wide-faced, short pitch spirals provide a large lifting surface with very little material fallback down the center of the spiral. Unlike shafted spirals which may suffer from a buildup of material around the shaft, especially at the discharge point, shaftless spirals discharge material efficiently to the receiving conveyor.

SPIROLIFT® vertical octagonal (OK) conveyors are specially designed to achieve vertical conveying of dewatered sludges and other difficult to transport materials.

PRODUCT BENEFITS
  • High volume capacity for a small cross section
  • Intended for the transport of difficult, stringy, spongy, sticky, wet, lumpy materials – suitable for a wide range of moisture contents and viscosities
  • Complex geometries and limited space easily satisfied
  • Low RPM for long life expectancy to wear components
  • Totally enclosed troughs for odour and mess containment
  • Very high load/torque capability
  • Low maintenance costs
  • Long continuous runs on a single gearbox
  • Easily able to handle large foreign objects or product lumps
  • Forgiving operation allows for wide capacity range
  • Custom designed to match field equipment
  • High resistance to corrosion provides for very long equipment life expectancy in the harshest of conditions
  • Shaftless spiral:
    The shaftless spiral allows higher filling rates and lower RPMs resulting in less wear and consequently less maintenance and down time. Although the spirals can be made out of many different materials, the primary material is a special steel from Sweden which has mechanical properties that give the SPIRAC spiral a very high tensile strength. SPIRAC shaftless spiral conveyors are designed for the transport of otherwise difficult to handle materials, such as municipal dewatered sludge, wastewater screenings, grit, industrial sludges and other sticky, viscous, stringy materials.
  • No intermediate or end bearings:
    Not having intermediate and end bearings allows a comparative reduction in major maintenance work. It also allows efficient and direct transfer – horizontal, inclined or vertical – into another conveyor.
  • Liners: 
    SPIRAC’s proprietary liner, DURAFLO® SPX, is designed specifically to ensure long life. The DURAFLO® SPX liner has a built-in wear indicator with a snap-in, snap-out feature enabling easy replacement.
  • Totally enclosed troughs:
    SPIRAC conveyors are totally enclosed. There is no spillage of the material being conveyed and odours are completely contained.
  • Direct drive:
    SPIRAC’s direct-drive design allows a clean and efficient transmission without the maintenance required by belt and chain drives

Photo gallery

Shaftless Spiral Conveyor Material Transport Demonstration

Shaftless Spiral Conveyor Features and Benefits

Shaftless Spiral Conveyor Installation, Operation and Maintenance

GET A QUOTE FROM OUR SKILLED ENGINEERS

Start Planning Your Projects

    First Name

    Last Name

    Email

    How Can We Help?

    Country

    Attachments (Optional)


      First Name

      Last Name

      Email

      How Can We Help?

      Country

      Attachments (Optional)


      OUR FAQS

      Frequently Asked Questions

      Why Should You Buy From SPIRAC?

      SPIRAC is a trusted global leader in engineered wastewater solutions for materials handling, delivering reliable, purpose-built systems backed by decades of expertise. Customers choose SPIRAC for its ability to design and manufacture high-quality shaftless spiral conveyors, screenings handling systems, and bulk solids handling equipment that perform in the toughest industrial and wastewater environments. With a strong focus on innovation, durability, and low maintenance, SPIRAC solutions are engineered to reduce downtime, improve operational efficiency, and minimise lifecycle costs. Supported by a global footprint and dedicated local service, SPIRAC partners closely with clients to provide customised, end-to-end solutions that consistently deliver long-term value and performance.

      When you choose SPIRAC, you can expect a reliable partner committed to delivering high-performance, engineered solutions tailored to your specific needs. From the initial consultation through design, manufacturing, and installation, SPIRAC works closely with clients to ensure every system is fit-for-purpose and built to last. You can expect robust equipment designed for harsh operating conditions, minimal maintenance requirements, and long service life. SPIRAC also provides strong technical support, responsive service, and ongoing collaboration to optimise system performance, reduce operational costs, and ensure your materials handling processes run smoothly and efficiently.

      SPIRAC can confidently demonstrate a proven track record built on decades of global project delivery and industry expertise.

      With installations in municipal and industrial facilities across Australia, Europe, the Middle East, the UK, and North America, SPIRAC has successfully delivered thousands of materials handling systems operating in demanding environments such as wastewater treatment plants, pulp and paper mills, food processing facilities, and heavy industry. Its shaftless screw conveyor technology is widely recognised as a benchmark in the industry, with many long-term installations still operating efficiently after years of continuous service. In addition, SPIRAC supports its reputation with documented case studies, repeat clients, and ongoing partnerships with leading engineering firms and utilities—demonstrating consistent performance, reliability, and customer satisfaction across a wide range of applications.

      At SPIRAC, we understand that accurate cost visibility is critical to successful project planning. That’s why our team is ready to provide detailed, transparent quotations tailored to your specific requirements. Whether you’re upgrading existing infrastructure or planning a new installation, we work closely with you to scope your needs and deliver a clear, competitive proposal. With our engineering expertise and practical industry knowledge, you can move forward with confidence—knowing your solution is both technically sound and commercially aligned. Reach out today and let us help you plan with certainty.

      only
      56%
      of domestic wastewater is safely treated worldwide, and we aim to help improve this.
      we serve clients in
      60+
      countries worldwide