Automatic bollards or removable ones? What the power buys you

An automatic bollard buys you time and effort at the gateway. Nobody gets out of the vehicle. What it charges you for is a power supply, a control unit, and a pit in the ground that has to drain. You also need a way to get the post down when the supply fails. A keyed removable bollard asks for none of that: nothing to wire, no electrics to fail. Somebody does have to walk over, unlock it and lift it out. How often the gateway opens decides which of those problems you would rather have.

Many people come to this after two quotes have landed a long way apart. Neither quote explains the gap, because the gap is not really about steel.

What is an automatic bollard?

An automatic bollard is a post that raises and lowers itself under power. A motor or a hydraulic unit, which is an oil driven ram, does the lifting. The driver triggers it with a remote, a keypad, a phone or a sensor loop set in the road.

The words get used loosely, and that is half the confusion. Four are worth separating.

  • Automatic, also sold as electric, powered or rising. Something with a motor in it does the work.
  • Semi-automatic. No electrical supply at all. A gas spring lifts the post and a person pushes it back down. Pilomat’s page for its semi-automatic range says the rise is automatic and the lowering is done by hand with a foot press. It is listed as needing no electrical power and suiting occasional use.
  • Retractable and telescopic. These words say where the post goes, not what moves it. A retractable post sinks into a sleeve rather than coming out of it. It can be powered, gas sprung or worked by hand.
  • Removable. The post comes all the way out, and it has to be stored somewhere.

If the job is stopping vehicles hitting something rather than letting the right ones through, the choice runs on different ground. There is a separate guide to access control against asset protection.

How often will you open the gateway?

Frequency decides this, not the size of the site or the value of what sits behind the gate. A gateway opened twice a day and one opened forty times a day are different problems.

Count your own before you talk to anyone. How many vehicles, how many trips each, and at what hour. Then ask whether anybody is on site to work a post by hand at six in the morning.

Manufacturers build to that count, which is the clearest sign it matters. Pilomat gives a usage frequency of 100 cycles a day for the 127 mm model in its electromechanical range, which is the electrically driven kind. It lists the series as ideal for high frequency installations at 1,000 cycles a day. Its hydraulic range is listed as suitable for intensive use at 2,000 cycles a day. Those figures belong to those products, but the pattern is general: a powered post is built around how often it moves.

What the motor buys back is easy to measure. FAAC’s specification for its J200 hydraulic bollard gives a rise of five seconds and a descent of seven. Against that, put the walk, the key, the lift, and somewhere to stand the post. On a gateway used twice a day, nobody notices. On one used forty times, it is somebody’s job.

What happens when the power goes out?

The post stays up. FAAC’s page for its J200 range lists a hydraulic lock in the high position in case of power failure, released with a special key. That is the default on that range, and nobody selling a powered bollard leads with it.

So the question is not whether the bollard fails. It is who holds that key, and whether they are on site when the supply drops.

Work out what a shut gateway costs you for an afternoon. A driveway where the car waits is an inconvenience. A rear laneway that has to get a truck out during a summer outage is not. That site needs a named person with the key, and a spare set.

Battery backup and fail-safe options come up in sales conversations. Ask in writing what the unit does when the supply drops.

What automatic bollards need that manual ones do not

This is where the quotes separate, and most of it is civil work rather than product.

None of that is a reason to avoid a powered bollard. It is why one costs what it costs, and the part a first quote leaves out.

  • Power at the gateway. A licensed electrician has to run a supply to the post. In the older streets around Sunshine and Tottenham, a rear laneway often has nothing nearby to take power from, and the trenching costs more than the cable.
  • A control unit, and somewhere dry to put it. Pilomat lists a control unit that can sit up to 30 metres from the bollard on its electromechanical range, and up to 80 metres on its hydraulic range. There is room to move it, but it needs a home.
  • An excavation deep enough for the whole cylinder. A keyed removable post drops into a 210 mm sleeve. A powered unit needs a hole big enough to bury the mechanism.
  • A pit that drains. Pilomat’s maintenance page lists clearing standing water out of the pit, with drilling in the bottom for drainage, among its service jobs. A pit holding water is a pit on its way to failing.
  • Servicing on a schedule. Pilomat says its own contracts run to two visits a year, six months apart. Those visits cover lubrication, oil and pressure checks, and the electrical safety devices.

When a keyed removable bollard does the same job

Start with what a removable post cannot do. Somebody has to attend, every time. It is slow, and wrong for a busy entrance or a site with nobody on it. The post also has to be carried and stored. At 12 kg for a 5 mm wall and 18 kg for a 10 mm wall, it suits some users better than others. Keys get lost, and a lost key holds the bay shut until it is replaced. A sleeve set badly causes trouble later, and there is a guide to how a removable bollard is installed.

Now the other side. There is no power supply, no control box, and nothing to fail in the wet. The sleeve goes in the ground instead of an excavation and a drained pit. The install is a much smaller job, and the post is a great deal cheaper to buy and cheaper to keep.

For one space used by one person, that trade is easy. Hand operation of a single reserved bay is worked through in its own article.

First Choice supplies keyed removable and fixed bollards that people work by hand. It says on its own site that it does not make or install automatic or app-controlled bollards.

So here is the question worth asking anyone who quotes you a powered unit. Who on site will hold the release key, and will they be there at six on a Sunday morning? Count the openings at your gateway for a week, photograph the spot, then ask First Choice for a quote with that number.

Frequently asked questions

Can an automatic bollard be retrofitted where a removable one is now?

Not as a swap. The sleeve a removable post sits in is far smaller than the pit a powered unit needs. The work is a fresh excavation, drainage in the base of that pit, and a supply run out to the gateway.

Can you operate an automatic bollard from your phone?

Some ranges are sold that way, alongside remotes, keypads and loops set in the road. The control you get depends on the range, so treat it as a question for the supplier rather than a given.

What happens if one is hit while it is raised?

Any post that has been struck should be checked before anyone trusts it again. A powered unit also has moving parts and wiring below the surface, so damage that does not show at ground level is worth looking for.

How often does an automatic bollard need servicing?

Pilomat builds its own maintenance contracts around two visits a year. Plan for a schedule like that as part of owning a powered post, rather than treating it as an extra.

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