Timing Belts - Cross & Morse - #51

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cop Cat ref_09.indd table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:7.00pt "Arial", sans-serif; } .font1 { font:9.00pt "Arial", sans-serif; } .font2 { font:12.00pt "Arial", sans-serif; } .font3 { font:5.00pt "Lucida Sans Unicode", sans-serif; } .font4 { font:6.00pt "Lucida Sans Unicode", sans-serif; } .font5 { font:9.00pt "Lucida Sans Unicode", sans-serif; } .font6 { font:6.00pt "Palatino Linotype", serif; } .font7 { font:8.00pt "Palatino Linotype", serif; } .font8 { font:12.00pt "Palatino Linotype", serif; } .font9 { font:14.00pt "Palatino Linotype", serif; } .font10 { font:17.00pt "Palatino Linotype", serif; } .font11 { font:25.00pt "Palatino Linotype", serif; } .font12 { font:7.00pt "Tahoma", sans-serif; } Metric Standard Bores and Keyways r Impérial Keyway Dimensions to BS 46 Pt. 1 - 1958 All dimensions in inches Diameter of Shaft Key Size W X T Key Keyway to Shaft Keyway in hub Nominal Keyway radius & Key chamfer r* Over Up to and including Width W Thickness T Width Ws Depth H Width Wh Depth h Max. Min. Max. Min. Min. Max. Min Max. Min. Max. Min. Max. 1/4 1/2 1/8 x 1/8 0.127 0.125 0.127 0.125 0.124 0.125 0.072 0.078 0.125 0.126 0.060 0.066 0.010 1/2 3/4 3/16 x 3/16 0.190 0.188 0.190 0.188 0.187 0.188 0.107 0.113 0.188 0.189 0.088 0.094 0.010 3/4 1 1/4 x 1/4 0.252 0.250 0.252 0.250 0.249 0.250 0.142 0.148 0.250 0.251 0.115 0.121 0.010 1 1.1/4 5/16 x 1/4 0.314 0.312 0.253 0.250 0.311 0.312 0.146 0.152 0.312 0.313 0.112 0.118 0.010 1.1/4 1.1/2 3/8 x 1/4 0.377 0.375 0.253 0.250 0.374 0.375 0.150 0.156 0.375 0.376 0.108 0.114 0.010 1.1/2 1.3/4 7/16 x 5/16 0.440 0.438 0.315 0.312 0.437 0.438 0.186 0.192 0.438 0.439 0.135 0.141 0.020 1.3/4 2 1/2 x 5/16 0.502 0.500 0.315 0.312 0.499 0.500 0.190 0.196 0.500 0.501 0.131 0.137 0.020 2 2.1/2 5/8 x 7/16 0.627 0.625 0.441 0.438 0.624 0.625 0.260 0.266 0.625 0.626 0.185 0.191 0.020 2.1/2 3 3/4 x 1/2 0.752 0.750 0.503 0.500 0.749 0.750 0.299 0.305 0.750 0.751 0.209 0.215 0.020 3 3.1/2 7/8 x 5/8 0.877 0.875 0.629 0.625 0.874 0.875 0.370 0.376 0.875 0.876 0.264 0.270 0.062 3.1/2 4 1 x 3/4 1.003 1.000 0.754 0.750 0.999 1.000 0.441 0.447 1.000 1.001 0.318 0.324 0.062 4 5 1.1/4 x 7/8 1.253 1.250 0.879 0.875 1.248 1.250 0.518 0.524 1.250 1.252 0.366 0.372 0.062 5 6 1.1/2 x 1 1.504 1.500 1.006 1.000 1.498 1.500 0.599 0.605 1.500 1.502 0.412 0.418 0.062 6 7 1.3/4 x 1.1/4 1.754 1.750 1.256 1.250 1.748 1.750 0.740 0.746 1.750 1.752 0.526 0.532 0.125 7 8 2 x 1.3/8 2.005 2.000 1.381 1.375 1.998 2.000 0.818 0.824 2.000 2.002 0.573 0.579 0.125 8 9 2.1/4 x 1.1/2 2.255 2.250 1.506 1.500 2.248 2.250 0.897 0.905 2.250 2.252 0.619 0.627 0.125 9 10 2.1/2 x 1.5/8 2.505 2.500 1.631 1.625 2.498 2.500 0.975 0.983 2.500 2.502 0.666 0.674 0.187 10 11 2.3/4 x 1.7/8 2.755 2.750 1.881 1.875 2.748 2.750 1.114 1.122 2.750 2.752 0.777 0.785 0.187 11 12 3 x 2 3.006 3.000 2.008 2.000 2.998 3.000 1.195 1.203 3.000 3.002 0.823 0.831 0.187 3 6 o o 5 5 Tl a X + 4 o 3 2 5 o to Metric Keyway Dimensions to BS 4235 Pt. 1 - 1972 Shaft Key Keyway Diameter Width x Tolerances for class of fit width W depth Thickness nominal normal fit tol. close fit shaft hub Over to WxT width shaft hub shaft& hub H h mm mm mm mm mm mm mm mm mm 6 8 2 x 2 2 -.004 + .012 -.006 1.2 + 0.1 1.0 + 0.1 8 10 3 x 3 3 -.029 -.012 -.031 1.8 + 0.1 1.4 + 0.1 10 12 4 x 4 4 0 +.015 -.012 2.5 + 0.1 1.8 + 0. 12 17 5 x 5 5 -.030 -.015 -.042 3.0 + 0.1 2.3 + 0.1 17 22 6 x 6 6 3.5 + 0.1 2.8 + 0.1 22 30 8 x 7 8 0 +.018 -.015 4.0 + 0.2 3.3 + 0.2 30 38 10 x 8 10 -.036 -.018 -.051 5.0 + 0.2 3.3 + 0.2 38 44 12 x 8 12 5.0 + 0.2 3.3 + 0.2 44 50 14 x 9 14 0 +.021 -.018 5.5 + 0.2 3.8 + 0.2 50 58 16 x 10 16 -.43 -.021 -.061 6.0 + 0.2 4.3 + 0.2 58 65 18 x 11 18 7.0 + 0.2 4.4 + 0.2 65 75 20 x 12 20 _ 7.5 + 0.2 4.9 + 0.2 75 85 22 x 14 22 0 +.026 -.022 9.0 + 0.2 5.4 + 0.2 85 95 25 x 14 25 -.052 -.026 -.074 9.0 + 0.2 5.4 + 0.2 95 110 28 x 16 28 10.0 + 0.2 6.4 + 0.2 110 130 32 x 18 32 11.0 + 0.2 7.4 + 0.2 130 150 36 x 20 36 12.0 + 0.3 8.4 + 0.3 150 170 40 x 22 40 0 +.031 -.026 13.0 + 0.3 9.4 + 0.3 170 200 45 x 25 45 -.062 -.031 -.088 15.0 + 0.3 10.4 + 0.3 200 230 50 x 28 50 17.0 + 0.3 11.4 + 0.3 230 260 56 x 32 56 0 +.037 -.032 30.0 + 0.3 12.4 + 0.3 260 290 63 x 32 63 -.074 -.037 -.106 20.0 + 0.3 12.4 + 0.3 All keyways is common cut will be to normal fit tolerances to dimensions in above tables unless otherwise specified. Where hub diameters restrict size of key it practice to use shallow keys to conform to DIN 6885 Sheet 3. 49 4 INDEX ^ BACK NEXT ►