Hand Operated Worm Gear Screw Jack

The Hand Operated Worm Gear Screw Jack is a manually driven mechanical lifting device that converts hand crank rotary motion into smooth, controlled linear movement through a high-precision worm gear and trapezoidal screw transmission system. Equipped with a reliable self-locking function, it can securely hold the load at any position within the stroke without slipping, ensuring stable and safe operation even under static load conditions. Featuring a compact, lightweight structure that is easy to mount and operate without external power, it supports precise fine-tuning of lifting height, and is compatible with optional accessories like anti-rotation keys, dustproof bellows and customized mounting bases to adapt to diverse working scenarios. Widely applied in equipment positioning, small-tonnage lifting, industrial adjustment and fields where no power supply is available, it delivers long service life, high reliability and consistent performance across a wide working temperature range.