Projects
CS-06 Coal Mine
Site
Rio Tinto Coal Mine (Bowen Basin)
Application
9020 Dragline electric motor hold down bolts
Original Set-Up
Four 2” UNC Grade 5 bolts tightened with flogging wrench
Issues Experienced
- No Control of bolt load
- Difficult and confined location
- Alignment time consuming due to movement when tighntening
- OH&S issues with the use of flogging Spanner
Technofast Product Used
Standard 2” UNC high tensile EziTite® Hydraulic Nuts
Benefits
- Easy installation and handling
- Removed the need for flogging spanner improving OH&S
- Precise bolt load achieved
- Units remained tight throughout operation period
- Alignment speed dramatically increased
Installation Time
Old Method = 2-3 hours (3-4 personnel)
New Method = 30 minutes (2 personnel) including alignment
Time Saving = 1 hour and 30 minutes
Many improvements to Steel Products
No need to check if bolts are tight due to hydraulic load Applied. Alignment was very fast and simple requiring little physical effort
Dragline Planner- Mechanical
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