Straight shackles

A straight rigging shackle is used when working with lifting equipment. Its purpose is to increase the reliability of securing a lifting element, including ropes, wire ropes and other components. The manufacture of shackles is governed by departmental standards, GOSTs and other documents.

Types of shackles

The classification of shackles includes the following parameters:

1. Protective coating. To protect the shackle body from moisture or temperature, a coating of zinc or another material is additionally applied.
2. Shape. In addition to the straight U-shaped shackle, omega-shaped shackles are also produced.
3. By permissible temperature rating. They are conventionally divided into polar shackles, which may be used at temperatures down to -40 degrees Celsius, and standard shackles.
4. Auxiliary fixing components. For example, shackles are additionally supplied with a bolt and a special castellated nut that prevents loosening.

Performance characteristics

The DIN 82101 bow shackle is graded by load capacity from 330 kilograms to 150 tons, depending on heat treatment, dimensions (in particular the cross-section diameter and bow length), and the materials used in manufacture.

In the Russian Federation, the manufacturing standard for CA (anchor) shackles and other models is GOST 2224-72, which governs:

1. Storage procedures for keeping G2150 rigging shackles when not in use.
2. Material grades permitted for the manufacture of rigging components.
3. Quality control procedures and inspection methods for verifying products.
4. The manufacturing process, including forging and bending.
5. The locations where marking may be applied, and the data that must be indicated.
6. Surface quality requirements for the products.

Application areas

G210 rigging shackles are used in construction, industry, agriculture and household applications. Their field of use includes:

1. Loading and unloading operations.
2. Towing vehicles.
3. Connecting flexible rigging elements.

A straight shackle can withstand loads of 100 kilograms and above, depending on its geometric dimensions.

Installation and fastening method

Installing a rigging shackle does not require special qualification, but operational requirements and safety regulations must be observed:

1. Check the integrity of the shackle surface for defects and weld marks.
2. Tighten the pin fully using a tool — otherwise the fixing method is unreliable.
3. If the pin is bent or the dimensions do not match, use of the shackle is prohibited.
4. Check the load before use, taking shock loads into account.

Selection criteria

The criteria for selecting the size of a straight shackle are the component’s operating parameters, conditions of use, dimensions and strength, including load capacity. According to regulations and governing documents, the safety factor must be no less than 5.

The material of a straight shackle is selected based on operating conditions, including temperature and humidity. Take into account the bow diameter indicated in the product marking.

Before purchasing a straight shackle for use in hot workshops, changes in load capacity depending on temperature must be taken into account.