KHIA headerKnow-How in Action

VOL XXIX, NO 10

Belzona® Repairs Pillow Block Shaft

 
 

Industry:

Pulp & Paper (PLPR)

 
 

Application:

Mechanical Power Transmission (MPT)

 
 

Customer Location:

Idaho, USA

 
 

Application Date:

1992

 
 

Application Situation:

Sawmill shaft.

 
 

Problem:

Seized bearing on 20' shaft. Replacing the shaft would be time consuming, shutting down the entire sawmill for hours.

 
 

Products:

Belzona 1111 (Super Metal)

Belzona 9411 (Release Agent)

 

Substrate:

Steel

 
 

Application Method:

A former was made at the in-house machine shop in accordance with a modified version of Belzona Know-How System Leaflet MPT-2. Note the relief grooves down the side of the flanges. The former received two coats of Belzona 9411, then Belzona 1111 was applied. The shaft was ground and Belzona 1111 was applied. The former was bolted in place and Belzona 1111 was allowed to cure. After 2 hours, the former was removed, the excess of Belzona 1111 was dressed down with emery cloth and the new bearing installed.

 
 

Belzona Facts:

The former will be used many times as there are hundreds of shafts of the same size in the mill. The whole operation takes less than 3 hours, considerably reducing downtime versus shaft replacement.

 
 

Photographs Description

  1. Applying Belzona 9411 to the former
  2. Sweating the oil out of the steel shaft using a torch
  3. Bolting the former in place
  4. Dressing down Belzona 1111 with emery cloth
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com