Rack and pinion
AC
1600KG
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>> Introduction
The OMKER DCK-658 Automatic Sliding Gate Opener is designed for sliding gates weighing up to 500kg. Powered by a 370W single-phase AC motor, it operates through a rack-and-pinion drive system to provide smooth gate movement and accurate stopping. The motor features thermal overload protection, a magnetic limit switch, and an emergency manual release mechanism for convenient daily operation.
The DCK series includes four models with different gate weight capacities, making it suitable for residential entrances, commercial properties, and other sliding gate automation projects. Buyers can select the appropriate model according to gate weight, installation conditions, and operating requirements.

Model | DCK-658 | DCK-668 | DCK-678 | DCK-688 |
Input Power | 120V/220V 240VAC Single-phase | 120V/220V 240VAC Single-phase | 120V/220V 240VAC Single-phase | 120V/220V 240VAC Single-phase |
Max. Gate Weight (KG) | 500KG | 800KG | 1200KG | 1600KG |
Max. Torque | 18Nm | 22Nm | 35Nm | 38Nm |
Rated Power | 370W | 450W | 550W | 650W |
Protection Class | IP44 | IP44 | IP44 | IP44 |
Speed (m/min) | 12 | 12 | 12 | 12 |
Temperature | -45℃~+65C | -45℃~+65C | -45℃~+65C | -45℃~+65C |
Noise | ≤56dB | <56dB | <56dB | <56dB |
Certification | CCC | CCC | CCC | CCC |
For buyers requiring a higher gate weight capacity, the DCK-668, DCK-678, and DCK-688 offer alternative configurations within the same series.


Correct installation is essential for smooth operation and accurate gate positioning. The DCK-658 motor is installed beside the sliding gate and connected to the gate rack through its output gear. Installation and electrical connections must be completed by qualified technicians according to the user manual and applicable safety requirements.

The mounting base should be secured to a stable foundation and positioned horizontally. During installation, the motor output gear must align correctly with the gate rack. The installation manual specifies a clearance of approximately 1–2mm between the gear and rack to avoid excessive engagement that could affect automatic or manual movement.
Before fixing the motor permanently, the sliding gate should move smoothly along its track. The installer should also check the gate wheels, rack alignment, and mounting position to ensure that the transmission system operates without unnecessary resistance.

The DCK-658 uses magnetic limit switches to control the gate's opening and closing positions. During installation, the gate is moved manually to the required open and closed positions, and the corresponding magnetic limit brackets are mounted on the rack.
The brackets must be installed in the correct direction and adjusted until the gate stops at the intended positions. Once the adjustment is completed, the brackets should be securely fastened to maintain accurate positioning during normal operation.
The supplied release key allows the motor clutch to be disengaged for manual gate movement during a power interruption or malfunction. After the gate has been moved manually and normal operation can resume, the clutch should be engaged again before activating the automatic opener.
>> Function
The DCK-658 uses a rack-and-pinion transmission system to drive sliding gates along their tracks. Its magnetic limit switch system controls the opening and closing positions, helping the gate stop accurately at the designated points. With a rated gate movement speed of 12m/min, the motor supports convenient automated access.
The single-phase AC motor incorporates a thermal protection mechanism designed to interrupt operation when the motor reaches its specified protection temperature. This helps protect the motor from excessive heat during operation and supports reliable performance when used within the recommended operating conditions.
In the event of a power failure or motor malfunction, the DCK-658 can be switched to manual operation using the supplied release key. The clutch release mechanism allows users to move the sliding gate manually when automatic operation is unavailable. Once normal power and operation are restored, the clutch must be re-engaged before using the motor automatically.
The automatic sliding gate opener uses magnetic limit switches to determine the fully open and fully closed positions. The magnetic limit brackets are installed along the gate rack and adjusted according to the required travel distance. Correct positioning helps ensure consistent opening and closing operations.
The DCK-658 features an IP44 protection rating and a specified operating noise level of no more than 56dB. Its compact motor housing is designed for installation beside the gate track. Proper mounting, suitable electrical protection, and regular maintenance help maintain stable performance.
