Short answer: Comfort and safety in a sliding gate are achieved by combining a motor suited to the gate weight (400–2500 kg), a type suited to the ground and opening (tracked 3–10 m, cantilever 4–12 m), safety equipment within the scope of EN 12453 such as photocells, sensitive safety edges and obstacle detection, and correct track and foundation installation.
A garden gate is a building's first line of security and also its first impression. Because sliding gates need no swing space in front of the leaf, they are the most practical solution for sloping plots, narrow entrances and residential complex entrances with heavy vehicle traffic. However, a motorised gate is a moving mass weighing anywhere from a few hundred kilograms to several tonnes; safe use, just like comfortable use, depends on the project being set up correctly from the start. For product types, see our sliding gates page.
How is the mechanical infrastructure of a sliding gate set up?
The foundation of a long-lasting sliding gate is smooth, balanced movement of the leaf. This depends on the harmony of three components: the supporting structure, the track or roller system, and the drive.
Tracked system
In tracked sliding gates, the leaf runs on wheels along a galvanized track fixed to the ground. The track must be straight and level along its entire length and sit on a solid concrete foundation. Even slight subsidence or slope along the track line causes the motor to strain constantly and the wheels to wear prematurely.
Cantilever (trackless) system
In cantilever gates, the leaf travels suspended on carrier rollers located outside the opening; there is no track on the ground. It is therefore unaffected by snow, ice and sand, and is preferred for entrances with uneven ground or those requiring heavy-duty use. In return, it needs a parking area beside the leaf that is longer than the opening, and a solid foundation to carry the rollers.
Drive and gear rack
The motor moves the leaf via a gear rack fixed to the leaf. If the clearance between the gear rack and the motor pinion is not set correctly, the gate vibrates as it moves, makes noise and the gears wear. The power supply can be 230 V AC or 24 V DC for battery-backed operation.
Which gate type and motor capacity should be chosen?
The type is determined by the terrain, the opening width and the length of wall along which the leaf will slide. Motor capacity is selected according to the gate weight and the number of daily cycles. The four types in our catalogue compare as follows:
| Type | Opening | Motor capacity | Suitable use |
|---|---|---|---|
| PD Slide Rail (tracked) | 3–10 m | 400 / 800 / 1500 kg | Villas and detached houses, residential complex entrances, business garden gates |
| PD Cantilever (cantilever) | 4–12 m | 1500 / 2500 kg | Factories and industrial zones, logistics centres, public facilities |
| PD Swing (swing gate) | Single / double leaf | Ram, articulated-arm or underground motor | Villa and mansion entrances, classic architecture |
| PD Tele (telescopic) | 2 or 3 synchronised leaves | Synchronised drive | Narrow plots, short wall length, wide vehicle access |
For openings over 8 m, a cantilever gate and a powerful motor are recommended. If the wall along which the leaf will slide is short, a telescopic or swing gate is considered. At residential complex and factory entrances, a high-cycle industrial motor and battery module are preferred, while for villas and detached houses the standard series is generally sufficient. Leaving a margin rather than choosing a motor capacity right at the limit of the gate weight protects the motor against wind load and the increase in friction over the years.
Hot-dip galvanized steel, aluminium and wrought iron are available as materials; the surface is finished with electrostatic RAL powder coating. With composite infill or laser-cut patterns, the leaf can be matched to the façade architecture. The density of the infill also affects the leaf's wind load; fully solid infilled leaves in exposed locations must be taken into account separately when selecting the motor.
Which safety equipment should be used?
Motorised gates are assessed under the EN 13241 door and gate product standard and the EN 12453 standard for the safety in use of power-operated doors and gates. EN 12453 defines the safety measures required to ensure the gate does not harm a person or vehicle. In practice, this means several layers working together:
- Photocell: Detects a vehicle or person crossing the gate line and stops closing or reopens the gate.
- Sensitive edge (safety edge): Instantly cuts movement when there is contact with the leading edge of the leaf.
- Obstacle detection: The motor stops or reverses when it detects unexpected resistance.
- Soft start and soft stop: Prevents sudden movement of the leaf and reduces mechanical strain.
- Flashing light: Shows pedestrians and drivers that the gate is moving.
- Loop detector: Detects a vehicle in the gate line and prevents closing; provides additional safety at busy residential complex entrances.
On the control side, remote control, smartphone control via GSM or Wi-Fi, video intercom and number plate recognition integration are possible. During a power cut, battery-backed motors can perform a certain number of opening and closing cycles; without a battery, the key-operated manual release is unlocked to disengage the gear and the leaf is pushed by hand. At entrances with pedestrian traffic, a separate pedestrian gate avoids opening the vehicle gate just for people on foot.
Field note: One of the first points we check during the site survey is the ground level of the area along which the leaf will slide. In a tracked system, if there is a level difference along the track line, installation is not carried out until the foundation has been reworked. With cantilever gates, the length of the area where the leaf will park and the load-bearing capacity of the roller foundation are often overlooked. When an existing gate is to be automated, the actual weight and rigidity of the leaf are also assessed; a bent or twisted leaf will not work properly with a motor.
Common mistakes
- Choosing the motor based on opening width alone: The deciding factors are gate weight and the number of daily cycles.
- Leaving the track foundation weak: A subsiding track line strains the motor and wears the wheels.
- Relying on a single piece of safety equipment: A photocell alone does not cover the risk of contact at the leading edge of the leaf; a sensitive edge is also required.
- Using a tracked gate on sand or snow: On these surfaces a cantilever gate works more reliably.
- Not setting up a maintenance schedule: When track cleaning, gear rack adjustment and sensor testing are not carried out regularly, the likelihood of faults increases.
Frequently asked questions
What is the difference between a tracked gate and a cantilever gate?
In a tracked gate, the leaf runs on a track on the ground and is more economical. In a cantilever gate, the leaf is suspended on carrier rollers; because there is no track on the ground, it is unaffected by snow, ice and sand, but it requires additional wall length.
How do you choose a sliding gate motor?
It is selected according to leaf weight, opening width, gate type and the number of daily cycles. Options range from 400 kg to 2500 kg; an industrial series and battery module are recommended for residential complex entrances.
How is a garden gate opened during a power cut?
With battery-backed motors, the gate continues to operate for a certain number of cycles. Without a battery, the key-operated lock is released to disengage the gear and the leaf is pushed by hand.
Can a garden gate and a barrier be used together?
Yes. At residential complex entrances, the gate can handle perimeter security while the barrier manages vehicle flow. For the traffic management side, take a look at our automatic barrier systems guide.
Conclusion and next step
Comfort and safety in a sliding gate become lasting with the right type and motor selection, a solid foundation, multi-layered safety equipment and regular maintenance. You can find other perimeter security solutions on our gate and access control systems page. To have your entrance's ground conditions, opening and intensity of use assessed on site, send us your free site survey request.
