Selecting the Right Bearings
to Improve Vertical Turbine Pump Reliability

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Thordon Bearings designs and manufactures a complete line of grease and oil-free vertical pump bearings. 

  • Long Wear Life & High Abrasion Resistance
  • Dry Start Up Capability
  • Low Friction – No “Stick-Slip”
  • Sizing Flexibility – Easily Installed On-site
  • Pollution Free Operation – Wet or Dry 
  • High Resilience & Impact Resistance
  • Reduced Starting Torque
  • Easy & Safe To Machine

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Thordon SXL

Thordon SXL

  • Preferred choice for dry start-up capability
  • Lower dry coefficient of friction typically 0.10 - 0.20
  • Working pressure to 10 MPa (1450 psi)
  • Wet or dry operation
  • High resistance to abrasion, shock loading and vibration

Composite (GM2401)

Composite

  • Made specifically for use in very abrasive water environments
  • Stiffer and at least twice the abrasion resistance of rubber
  • Lower coefficient of friction than rubber
  • Reduced maintenance downtime
  • Water lubricated - no grease
  • Easy installation

Thordon XL

Thordon XL

  • Long life with low dry coefficient of friction
  • Good abrasion resistance
  • Optimum performance in clean water applications

ThorPlas-Blue

Thordon ThorPlas-Blue pump bearings

  • Dry start-up capability
  • Operates in water and chemicals up to 80°C (176°F) and 110°C (230°F) dry
  • Engineered thermoplastic capable of design pressures up to 45 MPa (6527 psi)
  • Very low wear in non-abrasive environments

ThorPlas- White 

ThorPlas-White NSF

  • Ideal for Food Equipment, Drinking and Potable Water Applications
  • NSF/ANSI 51/61 and WRAS approval
  • Low fiction of operation
  • Very low wear
  • Good dry run capability due to built-in lubricants
  • Easy to machine - no nuisance dust
  • Easy to install

Technical Papers

 

Documents

References

References and articles of Thordon pump bearings

Design

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Thordon Bearings Sizing Calculation Program

The final (fully finished) sizing of a Thordon elastomer or ThorPlas bearing can be determined by using the Thordon Bearing Sizing Calculation Program.
You cannot run the Thordon Bearing Sizing Calculation Program without a User Registration Number.
Once you have a User Registration Number you can download the Program below and enter it when prompted.

Step 1 - Register:
Click here to Request a Bearing Sizing Program User Registration Number

Step 2 - Download:
If you have a Bearing Sizing Program User Registration Number, you can download the program here

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Our Newsletter

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  • News-Thumbnails-320x160-NewsWorks2019-1

    Thordon Hydro NewsWorks 2019

    Thordon’s web-based newsletter specifically developed for hydro and clean power users of oil-free and grease-free bearings. This newsletter includes feature articles about multiple successful turbine guide bearing conversions, T-G DNALOP purchasing a small hydro power plant in Poland, and a recent success of Thordon installed in a tidal energy application.
    Learn More

Recent Vertical Pumps News

View All Recent News

  • ThordonNews-PumpWhitepaper-thumb

    Bearing Selection Crucial to Vertical Turbine Pump Reliability says Thordon

    Aug 29, 2023
    Delegates at an international water industry conference learned that bearing selection plays a critical role in vertical turbine pump (VTP) performance, and that application, medium and bearing material should also be considered during pump manufacturing or refurbishment.
    Learn More
  • ThordonNews-July3123-thumb2

    Thordon Delivers Non-Metallic Bearings for Essential Cooling Water Pumps in Taiwan

    Aug 01, 2023
    Thordon Bearings has further strengthened its presence in the Taiwanese market, delivering water-lubricated elastomeric polymer bearings for installation on cooling water pumps commissioned for a major power plant expansion project. Thordon’s SXL and Composite non-metallic bearings have been specified by San Tai Pumps, which are providing the cooling water pumps to the state-owned Taiwan Power Company (“TPC”).
    Learn More

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