Direct-drive Motor Screw Jack

The direct-drive motor screw jack is an integrated compact linear lifting actuator optimized for automated precision motion scenarios. Different from traditional screw jacks that rely on intermediate transmission accessories such as couplings and reduction shafts, this upgraded model adopts a one-piece direct connection structure between the motor and the worm gear box. It eliminates redundant transmission links, reduces mechanical clearance and transmission loss, and delivers higher positioning accuracy, faster response and more stable synchronous operation. Designed for continuous automatic operation, this direct-drive screw jack is ideal for compact installation spaces, high-precision automation lines and standardized mechanical lifting systems, serving as a streamlined and high-efficiency linear motion solution.

 

Direct-drive motor screw jack

 

 

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precision parts processing line

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The direct-drive motor screw jack features an integrated modular internal structure with highly optimized component matching. The overall structure is compact, with fewer vulnerable parts and zero redundant transmission structures, ensuring high stability and low failure rate during long-term automatic operation. The core internal components are as follows:

Integrated Direct-drive Connection Module: Adopts customized flange direct-connect structure, enabling the motor to be fixed closely to the jack housing without intermediate transmission parts. This integrated design avoids transmission deviation and power loss caused by loose connecting parts, realizing one-to-one precise power output.

High-precision Worm and Worm Gear Pair: Made of high-strength alloy steel worm shaft and high-density wear-resistant bronze worm gear. After overall quenching and tempering treatment, the gear pair features high meshing precision, strong torque resistance and stable transmission, which can convert motor high-speed rotation into steady low-speed lifting power efficiently.

Precision Screw and Nut Transmission Assembly: Optional high-strength trapezoidal screw or high-efficiency ball screw. The precision-machined thread structure ensures uniform force bearing and smooth linear movement. The trapezoidal screw provides reliable mechanical self-locking, while the ball screw supports high-speed and high-cycle continuous operation.

High-rigidity Integrated Housing: Made of thickened high-strength cast iron or lightweight aluminum alloy. The integrally cast shell has good shock resistance, anti-deformation performance and heat dissipation efficiency, which can effectively bear dynamic load and resist equipment vibration during automatic operation.

Reinforced Bearing Support System: Equipped with large-size precision rolling bearings and thrust bearings, which reduce rotational friction, bear axial and radial composite loads, and ensure zero jamming and stable operation of the internal transmission system under long-term continuous working conditions.

Closed Lubrication and Sealing Structure: Built-in long-acting industrial lubricating grease matched with multi-stage oil seal and dust-proof ring. It effectively prevents grease leakage and external dust, moisture and impurities from entering, realizing long-term maintenance-free operation.
 

Centering on the core advantage of direct drive, this screw jack supports diversified automatic input modes, abandoning cumbersome intermediate transmission structures, and perfectly adapts to different automated control systems and working conditions:

Standard Motor Direct Input: Matched with ordinary three-phase asynchronous motors and brake motors for conventional automatic lifting and cyclic adjustment. It is the most widely used input mode for standard automated production lines.

Servo Motor Precision Direct Input: Customized servo flange interface supports direct connection with servo motors, realizing closed-loop control, fixed-point positioning and adjustable-speed operation. Suitable for high-precision positioning and synchronous linkage scenarios.

Frequency Conversion Motor Input: Compatible with variable-frequency motors to realize stepless speed regulation, meeting the speed switching requirements of different production processes and improving the flexibility of equipment operation.

DC Motor Low-power Direct Input: Supports DC motor direct drive for small-scale automatic equipment and low-voltage working environments, with stable power output and wide voltage adaptability.

Reserved Manual Debugging Input: Retains manual input interface for equipment debugging, shutdown maintenance and stroke calibration, ensuring convenient on-site operation without disassembling the integrated structure.

To adapt to various automated equipment installation and connection requirements, the direct-drive screw jack is equipped with multiple interchangeable screw head forms, covering top support, fixed connection, hinged swing and anti-rotation positioning scenarios:

Plain Flat Head: Smooth flat screw end, used for vertical top support and plane jacking. It features simple contact structure and uniform force bearing, suitable for conventional platform lifting and bracket supporting.

External Threaded Head: Standard metric trapezoidal thread design, which can be directly locked and connected with flanges, fixtures and customized connectors. It is applicable to tension and compression dual-load working conditions.

U-shaped Fork Head with Pin Hole: Hinged connection structure, allowing small-angle swinging and tilting movement. It is widely used for overturning mechanisms, angle adjustment brackets and swing-type automatic equipment.

Flange Mounting Head: Integrated circular flange plate at the rod end, realizing bolt fixed installation. It features high connection rigidity and strong anti-offset ability, suitable for high-precision fixed positioning equipment.

Anti-rotation Square Head: Customized square rod end structure to limit screw rotation, ensuring pure vertical linear displacement without lateral torsion or deviation, meeting high-precision linear adjustment requirements.

Benefiting from integrated compact structure, zero transmission clearance and stable automatic operation, the direct-drive motor screw jack is mainly applied to automated scenarios requiring compact layout, high precision and long-term continuous operation:

Automated Production Lines: Used for height adjustment of assembly platforms, tooling fixture positioning, conveyor frame calibration and multi-station synchronous lifting. The direct-drive structure ensures consistent repeated positioning accuracy of batch production.

Precision Processing Machinery: Applied to CNC auxiliary workbench lifting, mechanical mold gap adjustment and processing equipment leveling. It eliminates transmission errors and improves machining precision of workpieces.

Packaging and Printing Automation: Responsible for automatic lifting of packaging molds, roller height adjustment and printing equipment positioning. The compact integrated structure saves equipment layout space and improves production efficiency.

New Energy Intelligent Equipment: Suitable for photovoltaic bracket angle adjustment, battery production tooling lifting and electronic component testing platform calibration, adapting to high-precision and high-cycle automated production demands.

Logistics Intelligent Sorting System: Used for automatic height switching of conveyor lines and sorting baffle adjustment. The stable direct drive operation reduces equipment failure rate and realizes long-term unattended operation.

Medical and Laboratory Automation Equipment: Applied to intelligent medical bed lifting, experimental platform automatic calibration and detection equipment height adjustment, with smooth operation and low vibration.

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