Bow shackles are crucial components in heavy lifting, rigging, and towing operations. Their robust build and versatile shape make them ideal for handling angular loads without compromising strength. But how do manufacturers ensure these shackles are safe to use under extreme pressure? The answer lies in precise, standardized testing methods focused on safety and load capacity.
Why Testing Bow Shackles Is Essential
Shackles are often subjected to high-tension environments in industries such as construction, shipping, oil & gas, and manufacturing. A failure in any lifting gear can lead to severe safety hazards, equipment damage, or even life-threatening situations. That’s why reputable D shackle and Bow shackle manufacturers in India follow stringent testing protocols that meet both national and international standards.
Key Tests Performed on Bow Shackles
1. Proof Load Testing
This test involves applying a force that is 2 times the working load limit (WLL) to verify structural integrity. The goal is to ensure the bow shackle holds under typical working conditions without any deformation.
2. Ultimate Load Test (Breaking Load Test)
To assess the actual breaking point, the bow shackle is subjected to a load typically 4 to 6 times its WLL. This test determines how much overload the shackle can withstand before it fails.
3. Magnetic Particle or Ultrasonic Testing
These non-destructive tests are used to detect surface or internal cracks that might not be visible during visual inspections. It ensures the quality of the forged material used in manufacturing.
4. Dimensional and Visual Inspection
Before dispatch, each shackle is inspected for correct dimensions, surface finish, threading, and markings. These checks ensure that the product meets the required specifications and performs as expected in the field.
Importance for Hoisting Systems
Bow shackles are frequently used with hoisting equipment such as chain pulleys, cranes, and electric chain hoists. It’s vital that these components complement each other in terms of strength and compatibility. That’s why many electric chain hoist manufacturer suppliers in India partner with certified shackle manufacturers to ensure safe and reliable lifting assemblies.
Compliance and Certification
Top manufacturers provide shackles with mill test certificates and traceability documents, ensuring their products comply with ISO, IS, or ASME standards. This not only builds trust with buyers but also guarantees equipment reliability.
About SVIBO Industries
SVIBO Industries is a trusted name among D shackle and Bow shackle manufacturers in India. Known for its commitment to safety, durability, and precision engineering, SVIBO supplies high-quality lifting and rigging solutions across industries. As one of the reliable electric chain hoist manufacturer suppliers in India, SVIBO ensures every product meets strict testing standards.