KHIA headerKnow-How in Action

VOL XXIII, NO 70

Belzona® Creates Perfect Fit For Crusher Bushing

 
 

Industry:

Mining and Quarrying (MINQ)

 
 

Application:

Mechanical Power Transmission (MPT)

 
 

Customer Location:

Lead Mine, Central Missouri USA

 
 

Application Date:

May, 2008

 
 

Application Situation:

The Secondary Crusher. 

 
 

Problem:

Upper Crusher Bushing seized on crusher shaft and spun inside the housing, resulting in loss of approximately .025" to the inner diameter. Housing suffered additional damage from cutting torch while removing old bushing.

 
 

Products:

Belzona® 1111 (Super Metal)
Belzona® 1321 (Ceramic S Metal)

 

Substrate:

Steel

 
 

Application Method:

Application was carried out in accordance with Belzona Know How System Leaflet MPT-7. Belzona® 1111 was used to fill grooves cut by welding torch and Belzona® 1321 to restore inner diameter tolerances using the new bushing re-form the housing.

 
 

Belzona Facts:

Conventional weld repairs and line boring risked hardening/cracking of the assembly, with anticipated costs of $70,000-$76,000 and extensive downtime. Belzona solution was completed in 1 day for less than $2500!

 
 

Photographs Description

Upper Crusher Assembly (note size and weight) Damage to housing I.D and flange surface  Release Agent being applied to new bushing New bushing lowered in place with jacking bolts used to position bushing

 
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