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

Thordon SXL

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  • 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)

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  • 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

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

ThorPlas-Blue

Thumbnails 320x190_0004_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 

Thumbnails 320x190_0002_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

PT80

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  • Excellent mechanical property retention (in water), at higher temperatures
  • Internal lubricants provide dry run capabilities similar to Thordon SXL
  • Wear characteristics similar to existing Thordon elastomer grades
  • High abrasion resistance
  • Low coefficient to friction

Documents

 

References

References and articles of Thordon pump bearings


Design

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The final (fully finished) sizing of a Thordon elastomer or ThorPlas bearing can be determined by using the Thordon Bearing Sizing Calculation Program.

To download the Thordon Bearing Sizing Calculation Program Version 2017, Release 10, a user registration is required.

Request Bearing Sizing Program User Registration Number

Download Bearing Sizing Calculation Program (2.2 MB) Version 2017, Release 10


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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

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  • ThordonNews-NewOrleans-thumb

    Thordon SXL Bearings Keep Fans Cool in the Superdome

    Sep 24, 2019
    The Superdome in New Orleans, Louisiana improved their pump efficiency by using SXL bearings after they installed variable frequency drives (VFD) on their cooling water pumps. The abrupt start and stop was tough on the pumps which led to the Superdome’s decision to opt for the variable frequency drives. The slow start and lack of consistent shaft speed with the VFDs led to increased periods of dry running causing the strain and eventual failure of the existing pump bearings.
    Learn More
  • Thumbnails 320x160_0049_ThorPlas-White Bearings, NSF Certified for safe and sanitary use in food and water handling proc

    ThorPlas-White Bearings, NSF Certified for safe and sanitary use in food and water handling processes

    Dec 24, 2014
    (Burlington, Canada) Thordon Bearings Inc. has announced the addition of ThorPlas-White to its line of high performance, non-metallic bearings. ThorPlas-White has been specifically developed by Thordon’s New Product Development team for bearing or wear pad usage in the treatment and distribution of drinking water as well as for use in the construction of food processing equipment.
    Learn More