Synchronised Lift System

• 500T Capacity / 60mm lift
• 690 bar maximum operating pressure
• Individual pressure gauge
• Individual bleed down valves
• Low/High pressure option
• 10m hoses

The Port Miami Tunnel Project formed two 1.2km, 2 lane tunnels to form an alternative link to Dodge Island via the MacArthur Causeway on Watson Island.

McMillan Engineering Group supplied eight 300T double acting safe rams to facilitate the lifting of the 13.1m diameter tunnel boring machines. Via the use of internal porting we were able to design these rams with 150mm stroke and only 430mm closed height.

Specifications

• 301T Lifting capacity @ 690 bar
• 150mm Stroke
• 600T Capacity mechanical lock ring
• Double acting
• Spherical load cap
• 430mm Closed height
• NATA Force Calibration

McMillan Engineering Group were contracted to design, manufacture and supply a wide range of custom cylinders, power units and hydraulic accessories for the Urban Superway Project in Adelaide, South Australia.

Cylinder Details

McMillan Engineering Group, then trading as Industrial Hydraulic Services designed, manufactured and supplied span jacks for the M7 Project in Sydney, NSW.

Details:
16 x 200T Span Jacks

• Twin jack design
  
• 100mm Stroke
  
• Mechanical lock ring
  
• Spherical load cap
  
• Polyurethane load pad
  
• Teflon/stainless sliding base
  
• Side shift cylinders in two directions
  

24 x IHS-0125-05-LR-SR

• To suit 200T span jack frame to increase capacity to 250T and stroke to 135mm
  
• 125T Capacity
  
• 135mm Stroke
  
• Mechanical lock ring
  
• Spherical load cap
  
• Polyurethane load pad
  
• Teflon/stainless sliding base
  
• Side shift cylinders in two directions
  

In 1999 a development was planned for the historically significant Wales House building in Sydney. An extra floor was required which meant the 915T cupola needed to be raised 3.9m. Since dismantling the cupola was nut possible the decision was made to raise the cupola via the use of hydraulics. The cupola was raised and supported 1.3m a night over three nights.

McMillan Engineering Group designed and manufactured 12 hydraulic cylinders, a hydraulic power unit and a control panel to achieve this engineering feat.

Cylinder Details

• Quantity - 12
• Capacity of 145T @ 283 bar
• 1400mm stroke
• Spherical load cap
• Pressure relief valve
• Load holding valve

Hydraulic Power Unit Details

• 3 phase / 415 V
• 11kW
• 12 way split flow pump
• 1.2 lpm per outlet
• 480 litre reservoir

Control Panel Details

• 12 Pressure gauges
• 12 Directional control valves
• 6 Digital position readouts (Linked to rotary transducers)