Double Pitch Sprockets per Asian Standard

NK2040SB

SPROCKETS	mm
Tooth width (T)	7.2
CHAIN	mm
Pitch (P)	25.4
Internal width	7.95
Roller Φ (Dr)	7.95

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Type	Teeth	Do	Dp	Bored			BD	BL	Wt kg	Material
				Stock	Min	Max
NK2040SB	6 1/2	59	54.66	13	15	20	35	22	0.20	C45 Solid Hardened Teeth
	7 1/2	67	62.45	13	15	25	43	22	0.30
	8 1/2	76	70.31	13	15	32	52	22	0.42
	9 1/2	84	78.23	13	15	38	60	25	0.61
	10 1/2	92	86.17	14	16	46	69	25	0.82
	11 1/2	100	94.15	14	16	51	77	25	0.98
	12 1/2	108	102.14	14	16	42	63	25	0.83

NK 2050SB

SPROCKETS	mm
Tooth width (T)	8.7
CHAIN	mm
Pitch (P)	31.75
Internal width	9.53
Roller Φ (Dr)	10.16

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Type	Teeth	Do	Dp	Bored			BD	BL	Wt kg	Material
				Stock	Min	Max
NK2050SB	6 1/2	74	68.32	14	16	25	44	25	038	C45 Solid Hardened Teeth
	7 1/2	84	78.06	14	16	32	54	25	0.55
	8 1/2	94	87.89	14	16	45	65	25	0-76
	9 1/2	105	97.78	14	16	48	73	28	1-06
	10 1/2	115	107,72	14	16	48	73	28	1.16
	11 1/2	125	117.68	16	18	48	73	28	1.27
	12 1/2	135	127.67	16	18	48	73	28	1.40

NK 2060SB

SPROCKETS	mm
Tooth width (T)	11.7
CHAIN	mm
Pitch (P)	38.10
Internal width	12.70
Roller Φ (Dr)	11.91

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Type	Teeth	Do	Dp	Bored			BD	BL	wt kg	Material
				Stock	Min	Max
NK2060SB	6 1/2	88	81.98	14	16	32	53	32	0.73	C45 Solid Hairiened Teeth
	7 1/2	101	93.67	16	18	45	66	32	1.05
	8 1/2	113	105.47	16	18	48	73	32	133
	9 1/2	126	117.34	16	18	55	83	40	203
	10 1/2	138	129.26	16	18	55	83	40	2.23
	11 1/2	150	141.22	16	18	55	80	45	256
	12 1/2	162	153.20	16	18	55	80	45	281

Double pitch conveyor chain sprockets are often are ideal for saving on space and have a longer wear life than standard sprockets. Suitable for long pitch chain, double pitch sprockets possess more teeth than a standard sprocket of the same pitch circle diameter and distribute wear evenly across the teeth. If your conveyor chain is compatible, double pitch sprockets are definitely worth considering. Sprockets for double pitch roller chains are available in a single or double-toothed design. Single-toothed sprockets for double pitch roller chains have the same behaviour as standard sprockets for roller chains according to DIN 8187 (ISO 606). Due to the larger chain pitch of double pitch roller chains it is possible to increase durability by toothing modifications. Standard roller type sprockets are the same outside diameter and width as the single-pitch equivalent just with a different tooth profile to allow proper seating of the chain. On even tooth-counts, these sprockets only engage with the chain on every other tooth because there are two teeth per pitch. On odd tooth counts, any given tooth is engaged only on every other revolution which of course increases the sprocket life.