Automating your driveway gates can make entering and leaving your property more convenient while also providing greater control over access. However, choosing an electric gate motor isn’t simply a case of finding a motor powerful enough to move your gate.
The type of gate, its weight and dimensions, hinge positioning, available space and expected frequency of use can all influence which automation system is most suitable.
Choosing the wrong motor could result in poor performance, unnecessary wear or an installation that simply doesn’t work as intended.
Whether you’re automating an existing entrance or planning a completely new gate installation, this guide explains how to choose the right motor and electric gate opener kit for your property.
What Is an Electric Gate Motor?
An electric gate motor provides the mechanical power required to automatically open and close a gate.
The motor is connected to a control system that receives instructions from devices such as remote controls, keypads, intercoms, vehicle detection systems or compatible smart home equipment.
A complete gate automation system can include several components in addition to the motor itself, including:
- Control panels
- Remote controls
- Photocells
- Safety devices
- Gate stops
- Warning lights
- Keypads
- Intercom systems
- Manual release mechanisms
- Backup power options
The correct combination will depend on the gate and how you want to control access to the property.
Sliding vs Swing Gate Motors: What’s the Difference?
The first major consideration is whether you have a sliding or swing gate.
Although both can provide automated access, the way they operate is completely different and therefore requires different motor systems.
Sliding Gate Motors
Sliding gates move horizontally along the entrance rather than opening inwards or outwards.
A typical sliding gate motor uses a rack and pinion system. A toothed rack is fitted along the gate and engages with a powered pinion on the motor. As the motor rotates, it moves the gate along its track.
Sliding gates can be particularly useful where driveway space is limited because the gate doesn’t require a large opening arc.
They can also be suitable for larger or heavier entrances, with electric gate automation kits available for a wide range of gate weights and lengths.
However, the gate needs sufficient room to slide back alongside the boundary. The track, rollers and guides must also be correctly installed and maintained to ensure smooth movement.
Swing Gate Motors
Swing gates operate in a similar way to traditional hinged doors, with either one or two leaves opening around hinges attached to posts or pillars.
There are several different motor configurations available for swing gates.
Ram Motors
Ram motors are commonly used for swing gates and provide a straightforward automation solution where the gate hinges are positioned relatively close to the inside edge of the post or pillar.
They can offer an effective combination of performance and simplicity, but sufficient mounting space is required.
Articulated Arm Motors
Articulated motors use a jointed arm to move the gate.
They can be particularly useful where gates are attached to larger or deeper pillars because the articulated arm can reach around the pillar geometry more effectively than some linear motors.
Underground Motors
Underground gate motors are installed beneath the gate around the hinge area.
Because most of the automation mechanism is concealed below ground, underground systems can provide a particularly discreet appearance.
They are often considered for premium entrances or where visible motors would detract from the appearance of decorative gates.
Installation can be more involved because suitable underground foundation boxes, drainage and associated groundwork may be required.
Consider the Weight of Your Gate
One of the most important specifications when choosing an electric gate motor is maximum gate weight.
Every motor is designed to operate within particular limits.
A lightweight residential aluminium gate will have very different requirements from a large steel gate used at a commercial entrance.
Choosing a motor that is inadequately rated for the gate can put excessive strain on the system.
When comparing automatic gate opener kits, check the manufacturer’s maximum gate weight and make sure your gate falls comfortably within the specified operating limits.
Remember that weight isn’t the only consideration.
Measure the Gate Length
Gate length or leaf length is another critical measurement.
For a double swing gate, this usually means measuring each individual gate leaf rather than the total width of the entrance.
Manufacturers specify maximum leaf lengths because longer gates create different forces and leverage on the automation equipment.
A motor suitable for a short residential gate may therefore be inappropriate for a much longer gate even if their overall weights are similar.
Accurate measurements should always be taken before selecting your motor.
Check the Gate Before Automating It
An electric gate motor should move a gate that is already mechanically sound.
Automation shouldn’t be used to compensate for damaged hinges, poor alignment or a sliding gate that is difficult to move manually.
Before installing an automation system, check that the gate moves freely throughout its full range.
For swing gates, inspect hinges, posts and stops.
For sliding gates, inspect the track, wheels, rollers and guides.
Any mechanical problems should be corrected before the motor is installed. This reduces unnecessary resistance and allows the automation system to operate as intended.
Consider Hinge and Pillar Positioning
Swing gate hinge positioning can have a major impact on motor choice.
If the hinges are positioned close to the inside corner of a post, a ram-style motor may be suitable.
Where hinges are recessed further into a deep pillar, an articulated arm motor may provide the additional reach required.
Underground automation is another option because the drive mechanism is positioned around the gate’s pivot point rather than being mounted across the face of the pillar.
Taking accurate measurements at this stage can prevent the common problem of purchasing an automation kit that physically cannot be installed in the available space.
Think About Your Installation Environment
The area surrounding the gate is just as important as the gate itself.
For example, a wall or fence running immediately behind a swing gate pillar could restrict the space available for a ram or articulated arm.
A sliding gate requires enough unobstructed space along the boundary for the entire gate to retract.
The driveway surface, drainage, electrical supply and position of safety equipment should also be considered.
For underground motors, drainage deserves particular attention because the automation equipment is installed below ground level.
Planning the complete installation before purchasing the motor can save considerable time later.
How Frequently Will the Gate Be Used?
A gate serving a private home might only operate a handful of times each day.
A gate controlling access to an apartment development, office, warehouse or industrial property could operate hundreds of times.
This difference is known as the duty cycle or intensity of use.
For higher-use environments, you may need automation specifically designed for frequent or intensive operation.
Using an unsuitable residential motor in a high-traffic environment can potentially result in increased wear and reduced service life.
Think realistically about how often the entrance will operate both now and in the future.
What About Motor Voltage?
Gate automation systems are available with different motor voltages, with 24V systems particularly common for modern residential applications.
Different systems can offer different characteristics in areas such as speed control, intensive operation and battery backup compatibility.
Rather than choosing based on voltage alone, consider the overall specifications of the automation kit and whether they match the requirements of your gate.
Don’t Forget Gate Safety
Safety should be considered from the beginning of any gate automation project rather than added as an afterthought.
Automated gates create moving forces and potential trapping or crushing areas.
Depending on the installation, safety equipment may include photocells, safety edges and obstacle detection systems.
The exact safety requirements will depend on the design and layout of the gate system, which is why a proper risk assessment is important.
Areas where a person could become trapped between a moving gate and a fixed object require particular attention.
Professional advice should be sought if there is any uncertainty regarding the safety requirements of an automated gate installation.
Choosing the Correct Electric Gate Automation Kit
Purchasing a complete gate opener kit can make it easier to obtain the main components required for your automation system.
Before choosing a kit, establish:
- Whether the gate slides or swings
- Whether you have a single or double gate
- Gate weight
- Gate or leaf length
- Hinge position
- Pillar dimensions
- Available installation space
- Expected frequency of use
- Power requirements
- Required access controls
- Safety requirements
You can then compare these measurements and requirements against the specifications of suitable automation kits.
Don’t automatically choose the motor with the highest power rating. The objective is to select a system designed specifically for the dimensions, weight and configuration of your gate.
Maintenance Tips for Electric Gate Motors
Once installed, regular maintenance can help keep an automated gate operating reliably.
Keep sliding gate tracks free from stones, leaves, mud and other debris that could interfere with movement.
Hinges, rollers and other mechanical components should also be inspected periodically for signs of wear or damage.
Safety devices such as photocells should be kept clean and checked to make sure they remain correctly aligned.
It is also worth paying attention to unusual noises, slower movement or changes in how smoothly the gate opens and closes. These can indicate that mechanical components need attention before they develop into larger problems.
Professional servicing at appropriate intervals can also help identify worn components and ensure that the complete automation and safety system continues to operate correctly.
Can You Automate an Existing Gate?
In many cases, yes.
Existing manual gates can often be converted to automatic operation, provided they are mechanically suitable and there is sufficient space for the appropriate motor and associated equipment.
However, older gates may need adjustments or repairs before automation is installed.
The gate should open and close smoothly by hand without excessive resistance. If considerable force is already required to move it manually, installing a powerful motor isn’t the correct solution. The underlying mechanical problem should be resolved first.
Which Electric Gate Motor Is Best?
There is no single electric gate motor that is best for every property.
A lightweight pair of residential swing gates may only require a relatively compact automation system, while a long commercial sliding gate could require a significantly more powerful motor designed for intensive use.
The most important factor is matching the automation equipment to the gate.
Measure the gate accurately, consider its weight, assess the hinge and pillar arrangement, look at the surrounding environment and think about how frequently the entrance will be used.
Taking the time to assess these factors before buying can result in a safer, smoother and more reliable automated entrance.
EasyGates offers a wide selection of electric gate opener kits for sliding, ram, articulated and underground gate automation, making it easier to compare options based on your specific gate and installation requirements.