Norbar Case Study
CS-34 Quarry/Mining: Cadia Gold Mine – Technofast Case Study
Site
Cadia Gold Mine
Original Set-Up
Standard mantle nut supplied with machine is installed using a hydraulic jacking hammer and removal was by oxy cutting the burn ring below the nut to release the pressure.
Issues Experienced
- Inaccurate measurement of required bolt load
- Use of large jacking hammers and flogging spanner dangerous
- Cutting of burn ring is hazardous & requires replacement after each use
- Physically demanding
Installation Time
Old Method = 4-5 hours + (5-6 personnel)
New Method = 45 minutes-1 hour (2-3 personnel)
Time Saving = 4+ hours
Application
Metso HP4 Crusher EziTite Head Nut
Technofast Product Used
Special EziTite® Hydraulic Head Nut
Benefits Experienced
- Easy installation and handling
- Removed the need for jacking hammers & flogging spanner
- Burn ring still used for better seating and a extra back up removal
- Bolt load achieved using hydraulic pressure from a pump
- Sacrificial outer cover made to protect the unit
- Minimal physical effort required
Feedback Recieved
“The EziTite® Head Nut has made the job a lot easier labour wise, faster and also has eliminated any OH&S concerns by getting away from our jacking ram to install. Using a hydraulic pump to achieve the load is also a no brainer.”
– Maintenance Supervisor
Application Pictures
Installation of EziTite® Hydraulic Head Nut before sacrificial cover.
Head Nut installed and the unit is now ready for service.
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