Attention
To ensure long-term operation of the swivel shackle it is not allowed to expose it to loads not in line with the rotation axis, and to disassemble and assemble it locally without further testing on special test rigs.
The swivel shackle is used in the anchor chains version 2. It is a modification of the anchor shot but has a simpler design and smaller size. The swivel shackle is made by hot stamping with subsequent welding of a special enlarged studded link.
To ensure long-term operation of the swivel shackle it is not allowed to expose it to loads not in line with the rotation axis, and to disassemble and assemble it locally without further testing on special test rigs.
Materials
1 – carbon steel;
2 – alloy steel;
3 – alloy steel with additional heat treatment.
External coating
BIT – bitumen paint, 1 layer, ISO 12944-5
Standard
The product meets Class Rules including IACS design, construction and operation standards.
| Chain grade | 1 | 1 | 2 | 3 |
|---|---|---|---|---|
| Ultimate tensile strength, MPa, not less than | 300–400 | 400–490 | 490–690 | 690 |
| Contraction at break, %, not less than | – | – | - | 40 |
| Elongation at break, %, not less than | 30 | 25 | 22 | 17 |
| Impact energy KV, J, not less than | – | – | 47 | 60 |
| Impact bending test temperature, °C | – | – | 0 | 0 |
Olga Sharonova
