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Many customers often see the traditional underground system as the most desirable automatic security gate system on the market - if for no other reason than the operating controls are hidden 'underground'. In the picture above you'll see a 'plate' positioned on the ground, at either side of the automatic gates. These 'plates' are in fact covering the underground box-holes that house the automatic gate opener control motors/mechanisms. The underground system gives good reliability together with a good 'tidy' finished look - when used in appropriate physical locations.
Advantages of the underground system:
- The best looking gate system around, a favourite of lots of houses
- Very powerful underground motors
- Perfect for ornate steel entrance gates
- Very hard to tamper with
- 240volt or 24 volt available
- On small gates, (i.e. 2 meters per leaf) the mechanisms do not require an additional lock in most situations as the motors lock the gate
Disadvantages of the underground system:
- Requires an awful lot of ground work to install, we need to dig holes big enough for the mechanism and also holes to drain surplus water away.
- It requires mains electricity at the gate.
- Susceptical to flooding, the drainage is vitally important
- There is a limit to the size of gate they can work, a guide is listed below
- Up to a wing width of 2 meters at a weight of 800kg
- Up to a wing width of 2.5 meters at a weight of 600kg
- Up to a wing width of 3 meters at a weight of 400kg
- Completely filled in wooden gates need to be judged as the max weight due to 'windage'
- The gates hinges require at least 70mm clearance from the inside post to the centre point
- They can only open to just over 90 degrees to 140 degrees
- A lot slower in operation than the wheel system
- If the gates move, it can put a strain and/or damage on the motor if it is not corrected quickly
- Why Not use an access system with them:
 
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