ThorPlas-Blue Wicket Gate and Linkage Bearings
15 Year Wear Life Guarantee

Eligibility

All new or refurbished Hydro-turbines with wicket gate and linkage bearings having a shaft diameter equal or greater than 50.8mm (2”).

Requirements

The end-user utility must clearly specify ThorPlas-Blue (see below) in order to qualify for the 15 year wear life guarantee. There will be a full technical signoff by Thordon Bearings prior to issuance of the 15 year wear life guarantee to the utility. A copy of the specification is available from Thordon.

(Bearings may be supplied to OEM or End-user customer directly, depending on project requirement)

ThorPlas-Blue Wicket Gate and Linkage Bearings

The specification includes:

1. ThorPlas-Blue wicket gate bearings (upper, middle, lower), and be fitted with Thorseals for all bearing positions in contact with water, to ensure a clean operating environment
2. ThorPlas-Blue linkage bearings and thrust washers, (if new linkage bearings are required)
3. Thordon SXL operating ring wear pads, (if new wear pads are required)

What is the Guarantee?

Thordon guarantees that the diametric clearance of ThorPlas-Blue wicket gate and linkage bearings after 15 years in service will not exceed 5x the original installed clearance, or Thordon Bearings will supply new bearings free of charge. The guarantee is limited to the supply of replacement bearings delivered to the end-user utility. It does not include replacement of any other Thordon supplied components nor any additional costs associated with the installation of replacement bearings. 

Worked Example:

ThorPlas-Blue wicket gate bearings to fit a Ø203mm (7.992”) shaft and Ø223mm (8.779”) housing

Original installed diametrical clearance = 0.27mm (0.011”)

If the clearance is found to exceed 1.27mm (0.055”) before 15 years of service life, then Thordon Bearings will supply new ThorPlas-Blue bearings free of charge

Conditions of Guarantee

• If 3^rd party machining of the bearings is used - Thordon must provide bearing sizing calculation & approve finished bearing dimensional report before installation
• Thordon Engineering to review & approve installed dimensions
• If existing operating ring wear pads and/or linkage bearings are to be re-used rather than replaced with new, Thordon to confirm that their condition is still suitable for use with new wicket gate bearings