How a Sliding Gate Motor Works — Rack and Pinion, Components and Capacity
A sliding gate motor moves a gate horizontally along a track using a rack and pinion drive: a toothed pinion on the motor meshes with a toothed rack fixed along the gate leaf, turning rotation into straight-line travel. A control board handles the remote, the key switch and the safety photocells, and a manual release lets the gate be moved by hand during a power cut.
Drive systemRack and pinion
Capacities800 to 4000 kg
Supply options220 V · 24 V · three-phase
OriginItalian made
Sliding gate motor driven by a rack and pinion system
Free check
🔧 Find the right sliding gate motor for your gateFive quick questions — capacity is sized at about double the gate weight
1 / 5
1️⃣ Roughly how much does the gate leaf weigh?If unsure, estimate from the gate size and metal thickness
2️⃣ How wide is the gate opening?
3️⃣ How tall is the gate?
4️⃣ Where is the gate used?
5️⃣ How often does the gate open each day?
✅ Recommended: 800 kg sliding gate motor — capacity is sized at roughly double the gate weight.
✅ Recommended: 1000 kg sliding gate motor — capacity is sized at roughly double the gate weight.
✅ Recommended: 1600 kg sliding gate motor — capacity is sized at roughly double the gate weight.
✅ Recommended: 2000 kg sliding gate motor — capacity is sized at roughly double the gate weight.
✅ Recommended: 2500 kg sliding gate motor — capacity is sized at roughly double the gate weight.
✅ Recommended: 4000 kg sliding gate motor — capacity is sized at roughly double the gate weight.
✅ A gate heavier than 2000 kg needs an individual review — send the dimensions and the sales team will confirm.
✅ No problem — send the gate width and metal thickness and the sales team will work the weight out with you.
🏭 Industrial use raises the load: for factories and workshops a class above this recommendation is preferred because of the heavy duty cycle.
Weight is the main input, but width and cycle rate matter too — the sales team confirms before any order.
Everything in a sliding gate system exists to solve one mechanical problem: turning a spinning motor shaft into straight horizontal travel. The rack and pinion arrangement does this directly. The pinion is a toothed wheel mounted on the operator. The rack is a toothed metal strip that runs along the length of the gate leaf.
When the motor turns the pinion, its teeth engage the rack teeth one after another. Because the rack is fixed to the gate and the operator is fixed to the ground, the pinion effectively walks along the rack and drags the gate with it. Reverse the motor and the gate travels the other way.
The toothed rack that the pinion travels along
Why the rack matters as much as the motor. The rack is the part that carries the load between motor and gate. Its length has to cover the full travel of the gate, not just the gate leaf, which is why rack quantity is calculated from your gate length rather than sold as a fixed set.
What a complete sliding gate system contains
A working installation is never the motor alone. These are the parts that appear in every sliding gate setup, and what each one is responsible for.
The operator unit
The housing that contains the motor and the pinion. It is fixed on a base beside the gate so the pinion lines up with the rack.
The operator unit, positioned so the pinion meets the rack
The control board
The board is the decision maker. It receives the signal from a remote or a key switch, decides direction, reads the limit inputs that mark the open and closed positions, and reacts to the photocell inputs. Boards are matched to the supply type, which is why a 24 V motor and a 220 V motor do not share the same board.
The control board handles remote, key switch, limits and photocells
Remote control and key switch
Two ways to trigger the same board. A remote is convenient and portable. A key switch is fixed beside the gate, needs no battery and cannot be misplaced, which is why shared entrances often use both.
A remote transmitter paired to the receiver on the control boardA key switch gives fixed, battery-free operation
Safety photocells
A transmitter and a receiver mounted on either side of the opening. While the gate is moving they hold an infrared beam across the gap. Break the beam and the board stops or reverses the gate. On any opening shared by vehicles and people, this is the part that prevents contact.
Photocells hold a beam across the opening while the gate moves
Manual release
Every operator includes a release that is unlocked with a key. Turning it disengages the drive so the gate can be pushed by hand. This is what keeps the gate usable during a power cut.
Capacity is quoted in kilograms and refers to the weight of the gate leaf the operator is built to move. Heavier gates need more torque to start moving and more braking control to stop cleanly, which is what separates the classes below.
Capacity
Typical use
800 kg
Lighter villa and residential gates
1000 kg
Medium residential gates
1100 kg (24 V)
Medium gates where quieter operation is wanted
1600 kg
Medium to heavy gates
2000 kg
Heavy gates, compounds and facilities
2500 kg
Large gates and larger installations
4000 kg
The heaviest industrial gates
Weight is not the only input. Gate width and how many times the gate opens per day both matter. A gate that cycles dozens of times daily puts a different demand on the operator than one that opens twice.
Heavier classes are built for larger gates and frequent cycling
Supply options: 220 V, 24 V and three-phase
A 220 V operator takes mains power directly. A 24 V operator runs on low-voltage direct current supplied by its control board, which is itself connected to the mains; the practical difference is quieter running and finer control over how the gate accelerates and slows at each end. Three-phase units are used where a three-phase supply is already available on site.
What is a sliding gate motor?A sliding gate motor is an electric operator that moves a gate horizontally along a track. A pinion gear on the motor engages a toothed rack fixed along the gate leaf, converting rotation into linear travel so the gate slides open and closed.
How does the rack and pinion system work?The motor turns a toothed pinion. That pinion meshes with a toothed rack running along the gate. As the pinion rotates it walks along the rack, pulling the gate with it. Reversing the motor reverses the direction of travel.
What happens during a power cut?Sliding gate operators include a manual release that is unlocked with a key. Releasing the drive disengages the motor from the gate so it can be moved by hand until power returns.
What stops the gate if something is in the way?Photocells. A transmitter and receiver face each other across the opening. If the infrared beam is broken while the gate is moving, the control board stops the gate or reverses it.
Which capacities are available?Our range covers 800, 1000, 1100 (24 V), 1600, 2000, 2500 and 4000 kg. The correct one depends on the actual gate weight, its width and how often it opens each day.
Do these motors run on Egyptian mains?Yes. Units are available in 220 V, 24 V and three-phase. A 24 V motor is powered through its control board, which itself connects to the mains supply.
Supply and delivery. We supply the equipment only. Cairo and Giza are delivered same day, other governorates in 3 to 5 working days. Payment is cash on delivery, bank transfer or InstaPay.
