K standard sprockets A type
K25A 
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Chain Pitch (P) 6.35 mm (1/4 inch)
Inner Width (W) 3.18 mm
Bush Dia. (Dr) 3.30 mm
Tooth Width (T) 2.8 mm

(Dimension : mm)
Sprocket No. Outside Dia.
Do		 Pitch Dia.
Dp		 Bore Dia. d
Weight
(kg)		 Material Teeth
Type Teeth Stock Bore min.
K25A 10 23 20.55 9 11 0.02 Mild Steel 10
12 28 24.53 9 11 0.03 12
13 30 26.53 9 11 0.04 13
14 32 28.54 9 11 0.04 14
15 34 30.54 9 11 0.05 15
16 36 32.55 9 11 0.05 16
17 38 34.56 9 11 0.07 17
18 40 36.57 9 11 0.07 18
20 44 40.59 9 11 0.09 20
24 52 48.65 9 11 0.14 24
25 54 50.66 9 11 0.16 25
27 58 54.70 9 11 0.17 27
28 60 56.71 9 11 0.18 28
29 62 58.73 9 11 0.20 29
30 64 60.75 10 12 0.23 30
32 68 64.78 10 12 0.27 32
33 70 66.80 10 12 0.28 33
35 74 70.84 10 12 0.30 35
36 76 72.86 10 12 0.32 36
37 78 74.88 10 12 0.37 37
38 80 76.90 10 12 0.41 38
40 84 80.93 11 13 0.43 40
42 89 84.97 11 13 0.47 42
45 95 91.03 11 13 0.50 45
50 105 101.13 11 13 0.59 50
55 115 111.23 11 13 0.70 55
60 125 121.33 11 13 0.87 60
70 145 141.54 11 13 1.81 70
75 155 151.64 12 14 1.37 75
80 165 161.74 12 14 1.62 80
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