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

PT80

PT 80

  • 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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  • SXL stock being machined

    Thordon Pumped to Deliver Bearings in Record Time

    Apr 05, 2021
    When a well-known industrial pump manufacturer needed four fully finished vertical pump bearings within three days to meet an urgent delivery deadline, Thordon Bearings’ Customer Service team orchestrated a solution to deliver the 6in (152.3mm) diameter water lubricated SXL bearings on time.
    Learn More
  • Bedford Pumps Press Release

    Bedford Pumps Incorporates Thordon Bearings' Technology for Flood Defence Pumps

    Feb 16, 2021
    Bedford Pumps Ltd, one of the world’s leading manufacturers of high-capacity flood defence pumps, has selected Thordon Bearings water lubricated SXL bearings for a new pump design developed for the Islington Pumping Station, in King’s Lynn, Norfolk, England. This important project will see four fish-friendly land drainage and flood control pumps installed at the new 16,000 l/s (253,605 US gal./min.) capacity pumping station which, when commissioned, will protect a 6000ha (23 square miles) area of low-lying fenland.
    Learn More