SK System

A range of specialised Grade 8 alloy steel components for safe and easy assembly to chain, steel wire rope, webbing and roundslings and designed to solve your below-the-hook problems.

The SK System provide:

• Universal coupling of components to chain, wire and synthetics slings.
• Quick and simple assembly - only a hammer needed.
• Foolproof assembly - standardised dimensions within each size range effectively eliminates the wrong assembly of components with different safe working loads.
• Heavy hoisting with strong yet lightweight equipment - all components are manufactured from alloy steel for use with Grade 8 chain.
• Individual components are proof-load tested to 62% of min. breaking load.
• Official approval by the main national and international authorities, including MOD, NATO, BG and many others.
• Patented protection for much of the range.

Master link (closed) type SKG

	Code	Max. load tonnes*	For chain size mm	Dim. in mm			Weight appr. kgs
				L	B	G
	SKG-7/8-8	2.0	7, 8	99	50	14	0.3
	SKG-10-8	3.2	10	127	66	18	0.6
	SKG-13-8	5.4	13	145	72	22	1.1
	SKG-16-8	8.0	16	175	82	25	1.7
	SKG-18/20-8	12.5	19	204	105	30	2.8

Master link (open) type SKO

	Code	Max. load tonnes*	For chain size mm	Dim. in mm				Weight appr. kgs
				L	B	G	B1
	SKO-7/8-8	2.0	7, 8	99	50	14	15	0.3
	SKO-10-8	3.2	10	127	66	18	20	0.6
	SKO-13-8	5.4	13	145	72	22	25	1.0
	SKO-16-8	8.0	16	175	82	25	30	1.6
	SKO-18/20-8	12.5	19	204	105	30	36	2.6

Sling hook with latch, type SKN, without latch, type SKH

	Code	Max. load tonnes*	For chain size mm	Dim. in mm					Weight appr. kgs
				L	B1	B2	G	H
	SKN-7/8-8	2.0	7, 8	90	32	27	18	21	0.4
	SKN-10-8	3.2	10	115	40	34	23	29	0.9
	SKN-13-8	5.4	13	141	48	42	28	36	1.8
	SKN-16-8	8.0	16	165	56	49	33	43	3.2
	SKN-18/20-8	12.5	19	189	66	59	42	50	5.1

Insulated Ball Bearing Swivel, type SKI

Enables welding to be carried out safely to a work place suspended from an electric hoist or crane by eliminating current leakage to earth. Max. 1000 v.

Ball Bearing Swivel type SKL

Totally enclosed ball bearing swivel, Fully rotational even at maximum load. Especially suitable for underwater use.

	Code	Max. load tonnes*	For chain size mm	Dim. in mm		Weight appr. kgs
				L	D
	SKI/SKL-7/8-8	2.0	7, 8	71/69	45	0.6
	SKI/SKL-10-8	3.2	10	90/87	57	1.2
	SKI/SKL-13-8	5.4	13	112/109	73	2.1
	SKI/SKL-16-8	8.0	16	132/127	88	3.8
	SKI/SKL-18/20-8	12.5	19	150/147	104	6.4

Roundsling coupling type SKR Special shape for full W.L.L. of the roundsling.

	Code	Max. load tonnes*	Dim. in mm				Weight appr. kgs
			L	B	K	S
	SKR-7/8-8	2.0	35	40	18	24	0.2
	SKR-10-8	3.2	42	47	24	29	0.4
	SKR-13-8	5.4	50	53	29	35	0.7
	SKR-16-8	8.0	62	67	35	43	1.2
	SKR-18/20-8	12.5	71	80	43	52	1.9

Shank coupling type SKS
Supplied unmachined as standard. Can be machined to customer requirements.

	Code	Max. load tonnes*	For chain size mm	Dim. in mm				Weight appr. kgs
				L	L2	D	d min
	SKS-7/8-8	2.0	7, 8	70	27	30	13	0.5
	SKS-10-8	3.2	10	85	34	36	16	0.9
	SKS-13-8	5.4	13	100	43	42	20	1.4
	SKS-16-8	8.0	16	112	52	50	25	2.5
	SKS-18/20-8	12.5	19	88	55	70	30	4.7

Half link type SKT(incl. locking set.)

	Code	Max. load tonnes*	For chain size mm	Dim. in mm			Weight appr. kgs
				L	B	E
	SKT-7/8-8	2.0	7, 8	28	18	22	0.1
	SKT-10-8	3.2	10	34	25	26	0.2
	SKT-13-8	5.4	13	44	29	33	0.4
	SKT-16-8	8.0	16	52	36	40	0.7
	SKT-18/20-8	12.5	19	63	43	48	1.1

Locking set type SKA

	Code	Weight appr. kgs
	SKA-6-8	0.01
	SKA-7/8-8	0.02
	SKA-10-8	0.05
	SKA-13-8	0.1
	SKA-16-8	0.2
	SKA-18/20-8	0.3
	SKA-22-8	0.4
	SKA-26-8	0.6
	SKA-32-8	1.1

Container hook type SKC

	Code	Max. load tonnes*	For chain size mm	Dim. in mm								Weight appr. kgs
				B	D	E	G	H	K	L1	L2
	SKC-13-8	5.4	13	50	50	34	24	41	29	218	174	3.6

* Safety factor 4:1