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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    Thordon NewsWorks 2014

    Thordon’s web-based newsletter specifically developed for hydro, industrial and pump users of oil-free and grease-free bearings. This newsletter includes feature articles about rehabilitated turbine guide bearings, vertical pump bearings installed on an offshore vessel and various industrial bearing applications.
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