High-Load Screw Jack Lifting Equipment: Upgrading Industrial Transmission-www.ludetransmission.com

High-Load Screw Jack Lifting Equipment: Upgrading Industrial Transmission Dec 26 , 2025

High-Load Screw Jack Lifting Equipment: Upgrading Industrial Transmission

In the fields of industrial automation and precision manufacturing, breakthroughs in equipment performance have always been the core driving force of industry development. Recently, Lude Transmission launched the SJA750 screw jack for an industrial automation production line. With its ultra-high load capacity of 750 kN, high-precision positioning of ±0.04 mm, and modular design, it provides a revolutionary solution for heavy equipment, military-aerospace, and the new energy industry chain.

I. Technological Innovation: Redefining Industry Benchmarks

The SJA750 screw jack employs a steel rod transmission system and achieves self-locking through optimized design. It maintains micron-level motion stability at 0.1 mm/s even under a full load of 75 tons. Its core advantages include:

Adaptability to Extreme Conditions: Utilizing a special heat treatment process calibrated by weight, it can operate continuously in extreme environments ranging from -40°C to 120°C, with impact resistance increased by 40% compared to traditional structures.
Breakthrough in Energy Efficiency: The multi-type spiral transmission design significantly improves overall efficiency under a full load at 1800 rpm.
Configuration Flexibility: Supports various drive methods including electric motor drive (speed/adjustable speed), manual drive, and optional hydraulic or pneumatic drives to meet the needs of different scenarios.
Reliability and Durability: The housing uses optional materials such as ductile iron or cast steel, equipped with a long-life lubrication system. It comes pre-filled with grease from the factory, supporting maintenance-free operation (requiring periodic inspection).
Safety Assurance: Standard features include safety nuts and limit switches (mechanical/potentiometer optional), with optional overload protection devices to ensure operational safety.

II. Scenario-based Applications: Full Coverage from Military Industry to New Energy

In a certain missile launch system project, the SJA750 achieved trajectory control at the ±0.1 mm level through an absolute synchronization control system, reducing energy consumption by 30% compared to traditional hydraulic solutions and extending the maintenance cycle to 5 years. In new energy battery module production lines, this model has elevated production efficiency to new heights with its powerful 75-ton load capacity.

III. Technical Parameter Overview

SJA750 Screw Jack Performance Parameters

Parameter Category	Specific Parameters
Model	SJA750
Rated Dynamic Load (kN)	750
Screw Specification	Screw Diameter × Lead: Tr140×20 (Example specification. Actual product may vary. Customizable)
Worm Gear Ratio	1:13.33 (Type VI) or 140 (Type LI) (Specific ratio varies depending on configuration)
Input Speed (rpm)	Maximum 1500 (standard). Higher speed models available upon customization.
Lifting Speed (mm/min)	≤1500 (standard). Up to 46 mm/s possible (special conditions).
Input Power (kW)	Maximum Allowable Input Power: 75 kW (Type LI example. Type VI specifics refer to selection manual).
Full Load Starting Torque (Nm)	1800 (Type LI example. Type VI torque value adjusts with gear ratio).
Efficiency	Operating efficiency at 1500 rpm: ≤33% (Affected by gear ratio and load).
Self-locking Function	High reduction ratio design, absolute self-locking, no additional brake required.
Positioning Accuracy	Standard accuracy ±0.1 mm. Can reach ±0.05 mm with optional anti-backlash device.
Operating Temperature Range	-20°C to 100°C (standard). High/low temperature models optional.
Protection Rating	IP55 (standard). IP65/IP67 optional.
Stroke Range	Up to 8 m (Subject to screw stability and guide mechanism design confirmation).
Drive Method	Supports electric motor drive (speed control/adjustable speed) and manual drive, with optional hydraulic or pneumatic drive configurations.
Housing Material	Ductile iron / cast steel (optional)
Lubrication Method	Long-life lubrication, factory pre-filled with grease, supports maintenance-free operation (requires periodic inspection)
Safety Features	tandard safety nuts and limit switches (mechanical or potentiometer optional), with optional overload protection devices.

For detailed technical drawings or customized solutions, please contact the Lude Transmission technical support team for exclusive selection and design services.