81x Chains ‘The Grain Chain’

Worldwide the most common running gear encountered is the American Series Roller Chain 81X. This we describe as the GRAIN CHAIN. It is always 2.609” pitch (66.27 mm). As operational duty has increased with it has the demand for a heavy duty version. 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, Precision Chains uniquely offer BT style being bent integral produced to customer standards.

	P	D2	D6	F1	L	S1	S2	H	IX
Chain Number	Pitch	Rollers Outside Diameter	Pins Diameter	Over-All Pin	Between Sidebars	Sidebars Thickness		Sidebars Height	Overall Width	Tensile Strength
	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[kN]
PC81X	66.27	23	11.11	47.2	27	4	4	28.58	TBA*	111
PC81XH	66.27	23	11.11	58.2	27	7.94	5.56	31.75	TBA*	176
PC81XHH	66.27	23	11.11	63.5	27	7.94	7.94	31.75	TBA*	186

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

81x Chains ‘The Grain Chain’

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