FB Single Double Sprockets

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FB Single Double Sprockets (Japanese Standard)

FBN 40SD

Chain	No.40
Pitch	(P)	12.7 mm (1/2inch)
Internal width	(W)	7.95 mm
Roller dia.	(Dr)	7.95 mm
Tooth width	(T)	7.2 mm (C) 27.8　mm

Outside dia. Do	Pitch dia. Dp	Hub		a	Weight (kg)	Sprocket No.		Bore ^dia. H7
Outside dia. Do	Pitch dia. Dp	BD	BL	a	Weight (kg)	Type	Teeth No.	Bore ^dia. H7
55	49.07	34	35	17.5	0.33	FBN 40SD	12	15,18
59	53.07	38	35	17.5	0.40		13	18,20
63	57.07	42	35	17.5	0.49		14	18,20
67	61.08	46	35	17.5	0.57		15	20,25
71	65.10	50	35	17.5	0.66		16	20,25
76	69.12	54	35	17.5	0.76		17	25,28,30
80	73.14	59	35	17.5	0.89		18	25,28,30,35
84	77.16	63	35	17.5	1.00		19	25,28,30,35
88	81.18	67	35	17.5	1.14		20	25,28,30,35
92	85.21	71	35	17.5	1.23		21	25,28,30,35

Finished Bore

Bore dia.^H7	Keyway bxt²	Setscrewｭｳ M
15~17	5X2.3	6
18~22	6X2.8	6
24~30	8X3.3	8
32~35	10X3.3	8

FBN 50SD

Chain	No.50
Pitch	(P)	15.875 mm (5/8inch)
Internal width	(W)	9.53 mm
Roller dia.	(Dr)	10.16 mm
Tooth width	(T)	8.7 mm (C) 31.3　mm

Outside dia. Do	Pitch dia. Dp	Hub		a	Weight (kg)	Sprocket No.		Bore ^dia. H7
Outside dia. Do	Pitch dia. Dp	BD	BL	a	Weight (kg)	Type	Teeth No.	Bore ^dia. H7
69	61.34	43	40	20	0.63	FBN 50SD	12	18,20
74	66.34	48	40	20	0.75		13	20,25,28
79	71.34	53	40	20	0.90		14	20,25,28,30
84	76.35	58	40	20	1.04		15	20,25,28,30,35
89	81.37	63	40	20	1.22		16	25,28,30,35,40
94	86.39	68	40	20	1.41		17	25,28,30,35,40
100	91.42	73	40	20	1.61		18	25,28,30,35,40
105	96.45	79	40	20	1.80		19	25,28,30,35,40
110	101.48	84	40	20	1.95		20	25,28,30,35,40
115	106.51	89	40	20	2.27		21	28,30,35,40

Finished Bore

Bore dia.^H7	Keyway bxt²	Setscrewｭｳ M
18~22	6X2.8	6
24~30	8X3.3	8
32~38	10X3.3	8
40	12X3.3	8

FBN 60SD

Chain	No.60
Pitch	(P)	19.05 mm (3/4inch)
Internal width	(W)	12.70 mm
Roller dia.	(Dr)	11.91 mm
Tooth width	(T)	11.7 mm (C) 38.3　mm

Outside dia. Do	Pitch dia. Dp	Hub		a	Weight (kg)	Sprocket No.		Bore ^dia. H7
Outside dia. Do	Pitch dia. Dp	BD	BL	a	Weight (kg)	Type	Teeth No.	Bore ^dia. H7
83	73.60	51	50	25	1.14	FBN 60SD	12	20,25,30
89	79.60	57	50	25	1.39		13	25,30,35
95	85.61	64	50	25	1.63		14	30,35,40
101	91.62	70	50	25	1.96		15	30,35,40
107	97.65	76	50	25	2.20		16	30,35,40,45
113	103.67	82	50	25	2.56		17	30,35,40,45
119	109.71	88	50	25	2.90		18	30,35,40,45
126	115.74	94	50	25	3.26		19	40,45,50
132	121.78	100	50	25	3.70		20	40,45,50
138	127.82	107	50	25	4.13		21	40,45,50

Finished Bore

Bore dia.^H7	Keyway bxt²	Setscrewｭｳ M
20~22	6X2.8	6
24~30	8X3.3	8
32~38	10X3.3	8
40~42	12X3.3	8
45~50	14X3.8	10

FBN 80SD

Chain	No.80
Pitch	(P)	25.4 mm (1inch)
Internal width	(W)	15.88 mm
Roller dia.	(Dr)	15.88 mm
Tooth width	(T)	14.6 mm (C) 45.4　mm

Outside dia. Do	Pitch dia. Dp	Hub		a	Weight (kg)	Sprocket No.		Bore ^dia. H7
Outside dia. Do	Pitch dia. Dp	BD	BL	a	Weight (kg)	Type	Teeth No.	Bore ^dia. H7
110	98.14	69	60	30	2.52	FBN 80SD	12	35,40,45
118	106.14	77	60	30	3.04		13	40,45,50
127	114.15	85	60	30	3.60		14	40,45,50
135	122.17	93	60	30	4.16		15	40,45,50
143	130.20	102	60	30	4.89		16	40,45,50,60
151	138.23	110	60	30	5.61		17	40,45,50,60
159	146.27	118	60	30	6.36		18	40,45,50,60
167	154.32	126	60	30	7.13		19	40,45,50,60
176	162.37	134	60	30	8.03		20	40,45,50,60
184	170.42	142	60	30	8.88		21	40,45,50,60

Finished Bore

^{Bore Dia H7}	Keyway bxt²	Setscrewｭｳ M
32~38	10X3.3	8
40~42	12X3.3	8
45~50	14X3.8	10
55	16X4.3	12
60	18X4.4	12

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