WELCOME TO NK B TYPE SPROCKET

NK Sprockets "B" Type

Chain	No.11
Pitch	(P)	3.7465 mm
Internal Width	(W)	1.83 mm
Outside Dia.	(Dr)	2.285 mm
Teeth Width	(T)	1.6 mm

Sprocket No.		Outside Dia. Do	Pitch Dia. Dp	Form	Bore Dia.		Hub		Set Screws	Weight (g)
Type	Z	Outside Dia. Do	Pitch Dia. Dp	Form	Min.	Max	BD	BL	Set Screws	Weight (g)
NK11SSB	12	16.2	14.48	B-I	4	6	9.4	10.5	M3X0.5	5.9
	15	19.9	18.02			9	13			11.5
	16	21.1	19.2			9	14			13.5
	18	23.5	21.58			11	16			17.7
	20	25.9	23.95		6	13	19		M4X0.7	23.3
	24	30.7	28.7							25.7
	28	35.5	33.46							28.7
	30	37.9	35.84	B-II	6	13	19			29.7
	34	42.7	40.6							37.9
	36	45.1	42.99							40.7
	40	49.8	47.75							46.5
	48	59.4	57.28							60.5
	12	16.2	14.48	C-I	4	6	9.4	14	M3X0.5	7.4
	15	19.9	18.02			9	13			14.7
	16	21.1	19.2			9	14			17.3
	18	23.5	21.58			11	16			22.8
	20	25.9	23.95		6	13	19		M4X0.7	30.3
	24	30.7	28.7							32.7
	28	35.5	33.46							35.7
	30	37.9	35.84	C-II						39.3
	34	42.7	40.6							48.9
	36	45.1	42.99							52.4
	40	49.8	47.75							59.9
	48	59.4	57.28							77.8

Chain	No.15
Pitch	(P)	4.7625 mm
Internal Width	(W)	2.38 mm
Outside Dia.	(Dr)	2.48 mm
Teeth Width	(T)	2.0 mm

Sprocket No.		Outside Dia. Do	Pitch Dia. Dp	Bore Dia.			Hub		Weight (g)
Type	Z	Outside Dia. Do	Pitch Dia. Dp	Stock Bore	Min.	Max	BD	BL	Weight (g)
NK15B	11	19.0	16.90	4	5	7	11	10	9
	12	20.5	18.40	4	5	8	12	10	10
	13	22.0	19.90	4	5	9	14	10	14
	14	23.5	21.40	6	7	10	15	12	17
	15	25.0	22.91	6	7	12	17	12	22
	16	26.5	24.41	8	9	12	18	12	23
	17	28.0	25.92	8	9	14	20	14	32
	18	29.5	27.43	8	9	14	22	14	40
	19	31.0	28.93	8	9	15	23	14	44
	20	32.5	30.44	8	9	15	24	14	49
	21	34.0	31.95	8	9	17	26	14	57
	22	35.5	33.46	8	9	17	27	14	62
	23	37.5	34.98	8	9	17	28	14	68
	24	39.0	36.49	8	9	20	30	16	88
	25	40.5	38.00	8	9	20	32	16	100
	26	42.0	39.51	10	11	22	33	16	104
	27	43.5	41.02	10	11	25	35	16	117
	28	45.0	42.54	10	11	25	37	16	131
	29	46.5	44.05	10	11	25	38	16	139
	30	48.0	45.56	10	11	25	39	16	147
	31	49.5	47.08	10	11	25	40	18	175
	32	51.0	48.59	10	11	25	40	18	176
	33	52.5	50.10	10	11	25	40	18	178
	34	54.0	51.62	10	11	25	40	18	180
	35	55.5	53.13	10	11	25	40	18	182

Chain	No.25
Pitch	(P)	6.35 mm
Internal Width	(W)	3.18 mm
Outside Dia.	(Dr)	3.30 mm
Teeth Width	(T)	2.8 mm

Sprocket No.		Outside Dia. Do	Pitch Dia. Dp	Bore dia.			Hub		Weight (g)
Type	Z	Outside Dia. Do	Pitch Dia. Dp	Stock Bore	Min.	Max	BD	BL	Weight (g)
NK25B	10	23	20.55	6.5	8.5	8.5	14	15	30
	11	25	22.54	6.5	8.5	8.5	15	15	30
	12	28	24.53	7.5	9.5	9.5	15	15	30
	13	30	26.53	7.5	9.5	10	18	15	50
	14	32	28.54	7.5	9.5	10	20	15	50
	15	34	30.54	7.5	9.5	10	20	15	50
	16	36	32.55	9.5	11.5	12	25	15	60
	17	38	34.56	9.5	11.5	12	25	15	70
	18	40	36.57	9.5	11.5	12	25	15	70
	19	42	38.58	9.5	11.5	16	28	15	80
	20	44	40.59	9.5	11.5	16	28	15	80
	21	46	42.61	9.5	11.5	16	28	15	90
	22	48	44.62	9.5	11.5	16	30	15	100
	23	50	46.63	9.5	11.5	16	30	15	110
	24	52	48.65	9.5	11.5	16	30	15	120
	25	54	50.66	9.5	11.5	20	35	15	140
	26	56	52.68	9.5	11.5	20	35	15	140
	27	58	54.70	9.5	11.5	20	35	15	150
	28	60	56.71	9.5	11.5	20	35	15	150
	29	62	58.73	9.5	11.5	20	35	15	160
	30	64	60.75	9.5	11.5	20	35	15	160
	31	66	62.77	10.5	12.5	22	40	20	200
	32	68	64.78	10.5	12.5	22	40	20	200
	33	70	66.8	10.5	12.5	22	40	20	210
	34	72	68.82	10.5	12.5	22	40	20	210
	35	74	70.84	10.5	12.5	22	40	20	210
	36	76	72.86	10.5	12.5	22	40	20	220
	37	78	74.88	10.5	12.5	22	40	20	260
	38	80	76.9	10.5	12.5	22	40	20	260
	39	82	78.91	10.5	12.5	22	40	20	270
	40	84	80.93	10.5	12.5	22	40	20	270
	41	87	82.95	10.5	12.5	30	50	20	320
	42	89	84.97	10.5	12.5	30	50	20	320
	43	91	86.99	10.5	12.5	30	50	20	400
	44	93	89.01	10.5	12.5	30	50	20	410
	45	95	91.03	10.5	12.5	30	50	20	410
	48	101	97.09	10.5	12.5	30	50	20	430
	50	105	101.1	10.5	12.5	30	50	20	460
	54	113	109.2	10.5	12.5	30	50	20	470
	60	125	121.3	10.5	12.5	30	50	20	520
	65	135	131.4	11.5	13.5	30	50	30	720
	70	145	141.5	11.5	13.5	30	50	30	770
	75	155	151.6	11.5	13.5	30	50	30	820
	80	165	161.7	11.5	13.5	30	50	30	880

Chain	No.35
Pitch	(P)	9.525 mm
Internal Width	(W)	4.78 mm
Outside Dia.	(Dr)	5.08 mm
Teeth Width	(T)	4.3 mm

Sprocket No.		Outside Dia. Do	Pitch Dia. Dp	Bore Dia.			Hub		Weight (kg)
Type	Z	Outside Dia. Do	Pitch Dia. Dp	Stock Bore	Min.	Max	BD	BL	Weight (kg)
NK35B	9	32	27.85	8.5	10.5	11	*21.5	20	0.06
	10	34	30.82	8.5	10.5	12	*24.5	20	0.08
	11	38	33.81	9.5	11.5	14	*27	20	0.09
	12	41	36.80	9.5	11.5	16	*30.5	20	0.12
	13	44	39.80	9.5	11.5	18	*32	20	0.12
	14	47	42.81	9.5	11.5	18	32	20	0.12
	15	51	45.81	9.5	11.5	20	35	20	0.16
	16	54	48.82	9.5	11.5	20	37	20	0.19
	17	57	51.84	11.5	13.5	25	41	20	0.22
	18	60	54.85	11.5	13.5	25	44	20	0.25
	19	63	57.87	11.5	13.5	28	47	20	0.28
	20	66	60.89	11.5	13.5	30	50	20	0.32
	21	69	63.91	11.5	13.5	32	53	20	0.36
	22	72	66.93	11.5	13.5	35	56	20	0.37
	23	75	69.95	11.5	13.5	38	60	20	0.38
	24	78	72.97	11.5	13.5	32	53	22	0.43
	25	81	76.00	11.5	13.5	32	53	22	0.44
	26	84	79.02	11.5	13.5	32	53	22	0.45
	27	87	82.05	11.5	13.5	32	53	22	0.46
	28	90	85.07	11.5	13.5	32	53	22	0.48
	29	93	88.10	11.5	13.5	32	53	22	0.49
	30	96	91.12	11.5	13.5	32	53	22	0.51
	31	99	94.15	11.5	13.5	32	53	22	0.53
	32	102	97.18	11.5	13.5	32	53	22	0.54
	33	105	100.20	11.5	13.5	32	53	22	0.56
	34	109	103.20	11.5	13.5	32	53	22	0.57
	35	112	106.30	11.5	13.5	32	53	22	0.59

Z	S	GD
9	4.4	17
10		20
11		23
12		26
13		29

Chain	No.410
Pitch	(P)	12.70 mm
Internal Width	(W)	3.40 mm
Outside Dia.	(Dr)	7.77 mm
Teeth Width	(T)	2.8 mm

Sprocket No.		Outside Dia. Do	Pitch Dia. Dp	Bore Dia.			Hub		Weight (kg)
Type	Z	Outside Dia. Do	Pitch Dia. Dp	Stock Bore	Min.	Max	BD	BL	Weight (kg)
NK410B	10	46	41.10	9.5	11.5	16	28	20	0.14
	11	51	45.08	10.5	12.5	16	30	20	0.19
	12	55	49.07	11.5	13.5	18	34	20	0.22
	13	59	53.07	13.5	15.5	20	38	20	0.23
	14	63	57.07	13.5	15.5	25	42	20	0.28
	15	67	61.08	13.5	15.5	28	46	20	0.34
	16	71	65.10	13.5	15.5	30	50	20	0.40
	17	76	69.12	13.5	15.5	32	54	22	0.46
	18	80	73.14	13.5	15.5	35	57	22	0.51
	19	84	77.16	13.5	15.5	40	62	22	0.59
	20	88	81.18	14	16	45	67	25	0.76
	21	92	85.21	14	16	48	71	25	0.85
	22	96	89.24	14	16	51	75	25	0.95
	23	100	93.27	14	16	51	77	25	1.00
	24	104	97.30	14	16	42	63	25	0.84
	25	108	101.33	14	16	42	63	25	0.88
	26	112	105.36	14	16	42	63	25	0.92
	27	116	109.40	14	16	42	63	25	0.96
	28	120	113.43	14	16	42	63	25	1.00
	29	124	117.46	14	16	42	63	25	1.00
	30	128	121.50	14	16	42	63	25	1.10
	32	137	129.57	14	16	45	68	28	1.30
	34	145	137.64	14	16	45	68	28	1.30
	35	149	141.68	14	16	45	68	28	1.40
	36	153	145.72	16	18	45	68	28	1.50
	40	169	161.87	16	18	45	68	28	1.70

Chain	No.40
Pitch	(P)	12.7 mm
Internal Width	(W)	7.95 mm
Roller Dia.	(Dr)	7.95 mm
Teeth Width	(T)	7.2 mm

Sprocket No.		Outside Dia. Do	Pitch Dia. Dp	Bore Dia.			Hub		Weight (kg)
Type	Z	Outside Dia. Do	Pitch Dia. Dp	Stock Bore	Min.	Max	BD	BL	Weight (kg)
NK40B	9	42	37.13	8.5	10.5	16	*28	22	0.11
	10	46	41.10	9.5	11.5	18	*32	22	0.14
	11	51	45.08	10.5	12.5	20	*36	22	0.19
	12	55	49.07	11.5	13.5	22	*40	22	0.22
	13	59	53.07	13.5	15.5	20	37	22	0.23
	14	63	57.07	13.5	15.5	25	42	22	0.28
	15	67	61.08	13.5	15.5	28	46	22	0.34
	16	71	65.10	13.5	15.5	30	50	22	0.40
	17	76	69.12	13.5	15.5	32	54