The Zoomlion GJ-1 Overwind Protection Switch is an essential safety component for lifting equipment. When the hook reaches its upper limit position, the switch triggers instantly to cut off the hoist control circuit, preventing serious accidents such as steel wire rope breakage or hook fall caused by overwinding.

The GJ-1 Anti-Overwinding Switch is a safety protection device designed specifically for engineering lifting equipment, primarily used in the hoisting mechanisms of mobile cranes, crawler cranes, and similar machinery. It triggers automatically when the hook reaches the preset upper limit position, cutting off the power supply to prevent equipment damage and safety accidents caused by wire rope overwinding. It is a core component for ensuring safe lifting operations.

The GJ-3 Overwind Limit Switch is a safety protection device specifically designed for lifting equipment. Its core function is to prevent accidents such as wire rope overwinding, breakage, or lifting tool damage caused by the hook exceeding its upper limit position. Featuring a metal housing and mechanical trigger structure, it offers sensitive response, easy reset, and reliable performance, making it an essential safety component for industrial lifting operations.

This is an original factory-equipped wireless anti-overwind protection device for XCMG truck-mounted cranes. It monitors the boom height in real time, triggering an audible-visual alarm and cutting off dangerous movements when the lifting height approaches a critical threshold. This effectively prevents safety accidents such as wire rope breakage due to overwinding and boom damage from overextension, making it a core component for safe lifting operations.

This device is a safety protection component designed for various lifting equipment. It uses a weight sensor to detect the hook position. When the hook rises to the preset height, it automatically cuts off the hoisting power circuit to prevent collision between the hook and the top of the boom (anti-two block/anti-overwinding), effectively protecting equipment and personnel safety. Built with industrial-grade protection, it withstands harsh outdoor working conditions of construction machinery and is a mandatory core component required by lifting machinery safety regulations.

This product is a safety protection device specifically designed for construction machinery. Its core function is to prevent crane hooks from overwinding during ascent, avoiding steel wire rope breakage or equipment damage. Built with a high-strength industrial-grade housing and a precise mechanical trigger structure, it operates reliably in various complex working conditions, making it an essential safety component for cranes, tower cranes, and other lifting equipment.

Designed specifically for SANY and various types of lifting equipment, this is a core safety device to prevent hook overtravel and ensure construction safety.

This product is the original factory-matched height limiter (anti-overwinding switch) for SANY truck cranes, specifically designed for safe crane operations. When the hook rises to the preset height, the device automatically cuts off the hoist’s lifting circuit and triggers an audible-visual alarm, preventing safety accidents such as hook overtravel and wire rope breakage. It is an indispensable safety protection device for lifting operations.

The SANY GJ-1 Overwind Switch is a safety protection device specifically designed for hoisting machinery. By real-time monitoring the hook position, it quickly cuts off the lifting control circuit when the preset limit height is reached, fundamentally preventing accidents such as steel wire rope overwinding, breakage and hook overtopping. It provides reliable protection for equipment and personnel safety. This product is compatible with all series of SANY cranes, crawler cranes, truck cranes and port hoisting equipment, featuring high protection level and strong anti-interference capability to adapt to various complex working conditions.

The Raico Wireless Anti-Overwind Limit Switch is a safety protection device specially designed for hoisting equipment such as truck cranes and mobile cranes. Adopting wireless transmission technology, it eliminates the need for complex wiring. When the hook rises to the preset limit height, it automatically cuts off power and triggers an alarm, effectively preventing hazards like steel wire rope overwinding and hook crashing. It is a core component to ensure the safety of hoisting operations.