Machinery's Handbook, 31st Edition
2624
Transmission Roller Chains Table 6. Roller Chain Sprocket Flange Thickness and Tooth Section Profile Dimension ANSI/ASME B29.1-2011 (R2016)
Flange chamfer may be either as in Section “A” or Section “B” or anything in between
M 4
M 3
t
t
M 2
g
g g
g
t
K
K K
h
h
R c
r f
r f
r f
Section “A”
Section “B”
Section “C”
Sprocket Flange Thickness
Maximum Sprocket Flange Thickness, t
Minus Tolerance on t
Max. Variation of t on Each Flange
Tolerance on M
Commer cial Plus or Minus
Width of Chain, W
Precision Minus Only
Std. Chain No.
Double & Triple
Quad. & Over
Commer cial
Preci sion
Commer cial
Precision
Single
25 0.125 0.110 0.106 0.096 0.021 0.007 0.007 0.007 0.021 0.004 35 0.188 0.169 0.163 0.150 0.027 0.008 0.008 0.008 0.027 0.004 41 0.250 0.226 … … 0.032 0.009 … … 0.032 0.004 40 0.312 0.284 0.275 0.256 0.035 0.009 0.009 0.009 0.035 0.004 50 0.375 0.343 0.332 0.310 0.036 0.010 0.010 0.010 0.036 0.005 60 0.500 0.459 0.444 0.418 0.036 0.011 0.011 0.011 0.036 0.006 80 0.625 0.575 0.556 0.526 0.040 0.012 0.012 0.012 0.040 0.006 100 0.750 0.692 0.669 0.633 0.046 0.014 0.014 0.014 0.046 0.007 120 1.000 0.924 0.894 0.848 0.057 0.016 0.016 0.016 0.057 0.008 140 1.000 0.924 0.894 0.848 0.057 0.016 0.016 0.016 0.057 0.008 160 1.250 1.156 1.119 1.063 0.062 0.018 0.018 0.018 0.062 0.009 180 1.406 1.302 1.259 1.198 0.068 0.020 0.020 0.020 0.068 0.010 200 1.500 1.389 1.344 1.278 0.072 0.021 0.021 0.021 0.072 0.010 240 1.875 1.738 1.682 1.602 0.087 0.025 0.025 0.025 0.087 0.012 Sprocket Tooth Section Profile Dimensions Std. Chain No. Chain Pitch P Minimum Radius R c Transverse Pitch K Standard Series Heavy Series
Depth of Chamfer h 0.125 0.188 0.250
Width of Chamfer g 0.031 0.047 0.062
25 35 41 40 50 60 80
0.250 0.375 0.500 0.500 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 3.000
0.265 0.398 0.531 0.531 0.664 0.796 1.062 1.327 1.593 1.858 2.124 2.392 2.654 3.187
0.252 0.399 0.566 … 0.713 0.897 1.153 1.408 1.789 1.924 2.305 2.592 2.817 3.458
… … … … …
0.250 0.312 0.375 0.500 0.625 0.750 0.875 1.000 1.125 1.250 1.500
0.062 0.078 0.094 0.125 0.156 0.188 0.219 0.250 0.281 0.312 0.375
1.028 1.283 1.539 1.924 2.055 2.437 2.723 3.083 3.985
100 120 140 160 180 200 240
All dimensions are in inches. r f max = 0.04 P for max. hub diameter.
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