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81X Chains ‘The Grain Chain’

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Worldwide the most common running gear encountered is the American roller chain series 81X. This we therefore describe as the GRAIN CHAIN. It is always 2,609” pitch (66,27 mm). As duties have increased a demand for a heavy duty version and extra heavy duty version has developed. This has been achieved by increasing the height and thickness of the side plates, although maintaining the same gearing details. Where necessary therefore the heavier versions can be used to upgrade existing equipment. Flights are normally WT the welded version but John King uniquely offer BT style being bent integral produced to customer standards.

81X Chains ‘The Grain Chain’
Chain Number	P	Tensile Strength	Rollers		Plate			Pin		Overall Width
			Diameter	Width	Thickness		Height	Diameter	Length	Overall Width
			D2	L	S1	S2	H	D6	F1	IX
	mm	kN	mm
JKR 81X	66.27	111	23	27	4	4	28.58	11.11	47.2	TBA*
JKR 81XH	66.27	176	23	27	7.94	5.56	31.75	11.11	58.2	TBA*
JKR 81XHH	66.27	186	23	27	7.94	7.94	31.75	11.11	63.5	TBA*

* Flight width IX to suit customer requirements.
Flight Options:
– WT denoted flight welded to side plate mid pitch,
– BT denotes flight bent integral with linkplate.

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81X Chains ‘The Grain Chain’

Get in touch with the team today.

Send Message to JOHN KING CHAINS

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