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Crane Limit Switch

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Crane Limit Switch

1.Reliable Safety Protection: It prevents overtravel accidents. So it protects equipment and workers.

2.Strong Environmental Adaptability: It withstands harsh conditions. These conditions include dust, water and extreme temperatures.

3.High Precision & Durability: It ensures accurate positioning. It also works stably for a long time.

4.Easy Integration: It is compatible with different types of cranes. This reduces installation and replacement time.

The Crane Limit Switch is a cost-effective safety component for cranes, combining high performance, durability, and easy use. It is essential for improving operational safety and efficiency in industrial hoisting scenarios.

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The DXZ crane limit switch is equipped with 1 to 6 control circuits and offers 8 gear ratio options.

Standard gear ratio serial number table：

Serial number 1 2 3 4 5 6 7 8
Gear ratio 1：13 1：17 1：46 1：60 1：78 1：210 1：274 1：960

Crane Limit Switch drawing

hoist limit switch crane
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Product Features and Applications

Features：

  1. The control circuits of the DXZ crane limit switch can be customized from 1 to 6 according to customer requirements. It offers 8 optional gear ratio specifications, including 1:13, 1:17, 1:46, 1:60, 1:78, 1:210, 1:274, and 1:960, and meets the IP65 waterproof and dustproof rating.
  2. It adopts high-precision sensors and adjustable limit points to meet the strict positioning requirements of heavy-load operations.
  3. Made of high-strength engineering plastics and corrosion-resistant metals, it can withstand more than tens of thousands of mechanical operations, thereby reducing maintenance costs.
  4. 4.Equipped with a universal mounting bracket and featuring a variety of electrical interfaces (e.g., AC/DC power supplies), it is compatible with most crane brands and control systems.

Applications​

Crane Limit Switch is widely used in industrial cranes, such as those for material handling in steel mills, logistics warehouses, container terminals and construction sites. It is also suitable for special cranes, including explosion-proof cranes and metallurgical cranes. It provides customized safety solutions for these cranes.

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Crane-Limit-Switch details

Product Details

The Crane Limit Switch features a modular design, consisting of a sensing unit, control unit, and housing. The sensing unit uses a roller lever or plunger structure, which triggers the internal microswitch when in contact with the crane’s travel stop. The control unit supports both normally open (NO) and normally closed (NC) contacts, compatible with 24V DC to 380V AC power supplies. The housing is made of flame-retardant ABS plastic, with a temperature resistance range of -40°C to +55°C, adapting to cold and high-temperature environments.

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Product Support

Hanko Heavy Industry specializes in the manufacturing, processing, and sales of crane limit switches. It focuses wholeheartedly on every tiny detail throughout the entire process, from R&D and production to delivery from the warehouse. The material control department carefully inspects and registers the selection, warehousing, and outbound of materials and accessories one by one. It prohibits unqualified switch components from entering the assembly platform, ensuring product quality and enabling the fast delivery of products. In the practical application at a large port, after years of operation under harsh working conditions, the products still run stably, accurately trigger limit signals, effectively prevent cranes from over-limit operations, and ensure the safety of personnel and equipment. They have won high praise from users, and their quality is trustworthy.

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Hanko Heavy Industry production equipment of Crane limit switch

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Complete Guide

About Hanko

Hanko products are manufactured using high-strength materials and go through strict quality inspections to ensure durability and operational safety.

We offer custom manufacturing services for non-standard parts based on customer drawings or specific requirements.

Our products meet international standards and are exported worldwide, earning the trust of clients across Asia, the Middle East, Europe, and beyond.

Why are limit switches installed on cranes?
Limit switches are used to prevent hooks, hoisting mechanisms, or trolleys from moving beyond safe operating positions, avoiding equipment damage or safety accidents.
They are usually connected to the low-voltage part of the control circuit. They stop the crane by cutting off the control circuit, rather than directly cutting off the main power supply.
Mechanical jamming or wear, contact erosion or poor contact, loose wiring, and improper adjustment of position.
Crane hoist limit switches (to prevent hooks from going too high/low), crane long travel limit switches (for the crane’s main movement along rails), trolley travel limit switches (for the trolley’s movement on the crane), crane rotary limit switches (for tower cranes), and crane overload limit switches (classified as protective devices).

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