Shortening Hooks

Shortening hooks are used to gradually adjust chain length, making it easier to operate a sling in relation to loads of various sizes. The shortening hook serves as a high-strength component for assembling chain stoppers and other products. These mechanisms are also fitted on chain-type turnbuckles to maintain tension in a chain or other flexible rigging element.

Application areas

Shortening hooks belong to grade 8. Models are mass-produced for chain diameters of 6-32 millimeters. These components are used in chain rigging assemblies to adjust branch length, which extends the operating range for loading and unloading work in heavy-duty conditions.

Design

Shortening hooks are secured by means of an end link to the outermost element of the sling. This link is locked into the throat of the hook. The length adjustment step depends on the chain’s dimensional parameters and equals the length of one link included in the assembly.

Operating features

1. The breaking load exceeds the rated load capacity by at least 4 times.
2. Models are manufactured in accordance with EN 818-2.
3. Coated with a signal-colored powder coating for corrosion protection.
4. The load capacity of the models reaches 31 tonnes.

Shortening hooks may be used outdoors and in production or warehouse facilities.

How to choose?

Shortening hooks are selected based on load capacity, load, chain diameter and gauge. The rated load capacity must not be exceeded. During operation, it is advisable to maintain a safety margin within the limits set by the standards.

Chain size, mm	Working load, t	Breaking load, t	B, mm	F, mm	E, mm	L, mm	Weight, kg/pc
6	1.12	4.48	7	7.5	10	42	0.12
7/8	2.0	8	9	8	12	57	0.21
10	3.15	12.6	12	10	14	70	0.4
13	5.4	21.6	15	13	22	91	0.86
16	8.2	32.8	20	17	30	115	1.6
20	12.5	50	23	21	35	133	3

Chain size, mm	Working load, t	Breaking load, t	B, mm	L, mm	Weight, kg/pc
6	1.12	4.48	6	48	0.18
7/8	2.0	8	11	50	0.36
10	3.15	12.6	12	72	0.75
13	5.3	21.6	17	90	1.4
16	8.0	32.8	20	110	2.8