Terex Jaques G35DA236 Crusher Mantle Nut

Original Set-Up

Standard mantle nut supplied with machine which was tightened with large flogging spanner. Removal was via oxy cutting the burn ring below the nut to release the pressure.

Issues Experienced

A number of issues were experienced with this method including: 

• No control of bolt load
• Use of large hammers and flogging spanner dangerous
• Cutting of burn ring is hazardous and requires replacement after each use
• Physically demanding

Product Used: Hydraulic Head Nut

Benefits include:

• Easy installation and handling
• Removed the need for flogging spanner
• Burn ring no longer required although used for mounting purposes
• Sacrificial cover provided (one complete piece)
• Minimal physical effort required

Installation Time

Old Method = 3-4 hours (2-3 personnel)
New Method = 30 minutes (2 personnel)
Time Saving = 2 hour and 30 minutes