Quick Flex Couplings Bore Tolerances and Keyway Sizes 8 #DriveLineHarmony Table 3. Bore Tolerances and Keyway Sizes (Imperial) Nominal Shaft Diameter Range Nominal Key Size Shallow Keyway Size Bore Tolerance Set Screw Over Up to and Including Width Depth Width Depth Clearance Fit Interference Fit in in in in in in in in in in Table 4. Bore Tolerances and Keyway Sizes (Metric) Nominal Shaft Diameter Range Nominal Key Size Shallow Keyway Size Bore Tolerance Set Screw Size mm Over Up to and Including Width Depth Width Depth Clearance Fit (H7) Interference Fit (P7) mm mm mm mm mm mm mm mm mm mm 6 8 2 2 2 1 +0.015 -0.000 -0.009 -0.024 2 @ 120° 8 10 3 3 3 1.4 +0.015 -0.000 -0.009 -0.024 10 12 4 4 4 1.8 +0.018 -0.000 -0.011 -0.029 12 17 5 5 5 2.3 +0.018 -0.000 -0.011 -0.029 17 18 6 6 6 2.8 +0.018 -0.000 -0.011 -0.029 18 22 6 6 6 2.8 +0.021 -0.000 -0.014 -0.035 22 30 8 7 8 3.3 +0.021 -0.000 -0.014 -0.035 30 38 10 8 10 3.3 +0.025 -0.000 -0.017 -0.042 38 44 12 8 12 3.3 +0.025 -0.000 -0.017 -0.042 44 50 14 9 14 3.8 +0.025 -0.000 -0.017 -0.042 50 58 16 10 16 4.3 +0.030 -0.000 -0.021 -0.051 58 65 18 11 18 4.4 +0.030 -0.000 -0.021 -0.051 65 75 20 12 20 4.9 +0.030 -0.000 -0.021 -0.051 75 80 22 14 22 5.4 +0.030 -0.000 -0.021 -0.051 80 85 22 14 22 5.4 +0.035 -0.000 -0.024 -0.059 85 95 25 14 25 5.4 +0.035 -0.000 -0.024 -0.059 95 110 28 16 28 6.4 +0.035 -0.000 -0.024 -0.059 110 120 32 18 32 7.4 +0.035 -0.000 -0.024 -0.059 120 130 32 18 32 7.4 +0.040 -0.000 -0.028 -0.068 – 130 150 36 20 36 8.4 +0.040 -0.000 -0.028 -0.068 – 150 170 40 22 40 9.4 +0.040 -0.000 -0.028 -0.068 – 170 180 45 25 45 10.4 +0.040 -0.000 -0.028 -0.068 – 180 200 45 25 45 10.4 +0.046 -0.000 -0.033 -0.079 – Note: Inch bore and keyway tolerances conform to ANSI/AGMA 9002. Note: Metric bore tolerances conform to ISO 286-2 H7 for clearance fit and P7 for interference fit. Metric keyway tolerances conform to ANSI/AGMA 9112 Normal keyway width tolerance. www.jbj.co.uk/couplings.html
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