Manual Screw Jack Lift Mechanism

The Manual Screw Jack Lift Mechanism is a purely manually driven mechanical lifting assembly that converts the rotational force applied to its operating handle into steady, controllable linear lifting motion through a high-strength trapezoidal screw and precision transmission structure. Built with a reliable self-locking feature, it can securely hold heavy loads at any position within the full stroke range without slipping, effectively preventing accidental load drop even when no external operating force is applied. Featuring a compact, rigid all-steel construction, grease-lubricated low-wear transmission parts and no requirement for external power supply, it can operate stably even in harsh, off-grid working environments. It supports a wide range of customizable parameters including lifting stroke, handwheel size, mounting plate specifications and screw protective accessories, and can be flexibly configured for single-unit use or multi-unit synchronous linkage, making it widely applicable for equipment leveling, heavy load position adjustment, industrial maintenance and other scenarios that demand precise, power-free manual lifting performance.