Lifting Chains
Lifting chains under GOST 30188-97 and RD 10-231-98: types, marking, material, selection by caliber and property class. FLOK supplies chains and components.
A lifting chain is a device used for rigging operations and general tasks at manufacturing facilities. The flexible element is used as part of a mechanism with manual, electric, or fuel drive, used for lifting and unloading products.
Types of lifting chains
Three types of lifting chains are produced in series:
- Plate-type with open pin and an even number of plates connected by pins and hinges.
- Plate-type with closed pin, consisting of a pair of plates.
- With round links: heat-resistant, hanging, improved, and anchor types.
Application areas
The chains are used regardless of environmental conditions and withstand loads in accordance with regulatory documents, including GOST 30188-97.
The metal products are used as part of a manual hoist structure. They are operated to move loads in warehouses and industrial facilities.
Material
Slings made from lifting chains are produced in accordance with RD 10-231-98. Chains made from steel in accordance with GOST 228 are suitable for this purpose. The following types of flexible rigging are used:
- High-strength, plate-type or hinged.
- With short and long links.
- Of normal and increased strength.
- Calibrated and non-calibrated.
By manufacturing accuracy, products are divided into calibrated and non-calibrated. Calibrated chains have a dimensional tolerance within 3% of the specification, non-calibrated — within 10%. Calibrated chains are used for winding onto drums and sprockets, non-calibrated — on flat blocks.
Marking
Lifting chains are marked according to the following template:
- Product name (standard, with spacers or other modules).
- Link length.
- Property class.
- Caliber (diameter of the wire from which the chain is made).
- Link dimensions (internal diameter).
How to choose?
Chains differ by material, link caliber, and load capacity. Selection is based on performance characteristics, nominal strength, operational reliability of the fastener, and tasks typical of general operations.
| Diameter / link length, mm | Link width, mm | Working load, t | Breaking load, t | Weight, kg/m | |
|---|---|---|---|---|---|
| internal | external | ||||
| 6×18 | 7.5 | 21 | 1.12 | 4.48 | 0.79 |
| 7×21 | 9 | 24.5 | 1.5 | 6 | 1.07 |
| 8×24 | 10 | 28 | 2 | 8 | 1.38 |
| 10×30 | 12.5 | 35 | 3.15 | 12.6 | 2.2 |
| 13×39 | 16.3 | 46 | 5.3 | 21.2 | 3.8 |
| 16×48 | 20 | 56 | 8 | 32 | 5.63 |
| 20×60 | 25 | 70 | 12.5 | 50 | 8.6 |
| 22×66 | 28 | 77 | 15 | 60 | 10.2 |
| 26×78 | 35 | 91 | 21.2 | 84.8 | 14.87 |
| 32×96 | 40 | 106 | 31.5 | 126 | 22.29 |
Sections
- 01
Calibrated Round-Link Chain
FLOK supplies calibrated round-link chains to GOST and ISO standards for lifting operations, with welded links of strictly consistent dimensions.
- 02
EN 818 Steel Chain with Short Round Links for Lifting Loads
FLOK supplies steel chain with short round links to EN 818-2, property class 8, for lifting equipment, with delivery across Russia.
- 03
Round Link Chain with Studs
FLOK supplies high-strength round link chain with studs, with links resistant to bending, and assists in selecting chain by weight and dimensions.
- 04
Stud Link Chain
FLOK supplies stud link chains that meet international standards.
- 05
Hanging chain
FLOK supplies round-link hanging chains in various sizes and weights for connecting different end fittings, chosen to suit operating conditions.
- 06
Heat-resistant chain
FLOK supplies heat-resistant round-link chains, resistant to high temperatures and mechanical loads, with delivery across Moscow and Russia.
- 07
Anchor chain
FLOK supplies stud-link anchor chains to GOST 228-79, compliant with ISO and other international standards, for vessels and humid environments.
See also
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