Page 6 of PS Plastic Spur Gears by KHK Stock Gears

plastic spur gears specifications precision grade gear teeth pressure angle material heat treatment jis n9 grade jis b1702-1 1998 old jis 5 grade jis b1702 1976 tooth hardness surface treatment tooth surface finish 115~120hrr cut standard full depth 20° mc901 datum reference surface bore for gear cutting secondary operations possible shape s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s5 s5 s5 s5 s5 s5 s5 s5 s5 allowable torque n.m note 2 bending strength allowable torque kgf.m bending strength 0.4474 0.5157 0.5887 0.6543 0.7231 0.8442 0.9775 1.1050 1.2330 1.3030 1.3740 1.5020 1.6330 backlash mm note 3 weight kgf 0.026 0.027 0.031 0.034 0.037 0.074 0.065 0.084 0.096 0.100 0.120 0.150 0.180 0.16 0.16 0.17 0.18 0.28 0.32 0.36 0.42 0.51 catalog no ps2.5-12 ps2.5-13 ps2.5-14 ps2.5-15 ps2.5-16 ps2.5-18 ps2.5-20 ps2.5-22 ps2.5-24 ps2.5-25 ps2.5-26 ps2.5-28 ps2.5-30 psa2.5-32 psa2.5-35 psa2.5-36 psa2.5-40 psa2.5-45 psa2.5-48 psa2.5-50 psa2.5-55 psa2.5-60 04.387 05.057 05.773 06.416 07.091 08.279 09.586 10.840 12.090 12.780 13.470 14.730 16.010 17.40 19.54 20.28 23.15 26.78 29.04 30.58 34.09 37.70 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.22 0.24 0.24 0.24 0.24 0.24 0.36 0.36 0.36 0.36 0.36 0.36 0.36 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.40 0.40 0.40 0.40 0.40 1.774 1.993 2.068 2.361 2.731 2.961 3.118 3.476 3.844 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 s1 07.581 08.739 09.973 11.090 12.250 14.310 16.560 18.720 20.900 22.070 23.270 25.450 27.670 0.7731 0.8911 1.0170 1.1310 1.2490 1.4590 1.6890 1.9090 2.1310 2.2510 2.3730 2.5950 2.8220 0.28 0.28 0.28 0.28 0.28 0.30 0.30 0.30 0.30 0.3 0 0.30 0.3 0 0.30 0.44 0.44 0.44 0.44 0.44 0.46 0.46 0.46 0.46 0.46 0.46 0.46 0.46 0.040 0.048 0.056 0.059 0.074 0.100 0.120 0.150 0.180 0.190 0.210 0.250 0.260 ps3-12 ps3-13 ps3-14 ps3-15 ps3-16 ps3-18 ps3-20 ps3-22 ps3-24 ps3-25 ps3-26 ps3-28 ps3-30 3.0650 s5 30.06 0.23 0.30 0.46 psa3-32 3.4440 s5 33.77 0.29 0.32 0.48 psa3-35 0.48 3.5740 s5 35.05 0.31 0.32 psa3-36 4.0800 s5 40.01 0.38 0.32 0.48 psa3-40 4.7190 s5 46.28 0.49 0.32 0.48 psa3-45 5.1170 s5 50.18 0.55 0.32 0.48 psa3-48 5.3870 s5 52.83 0.53 0.32 0.48 psa3-50 6.0070 s5 58.91 0.73 0.32 0.48 psa3-55 6.6420 s5 65.14 0.88 0.32 0.48 psa3-60 note 2 the allowable torques shown in the table are calculated values using the lewis formula please see page 27 for more details note 3 the backlash values shown in the table are the theoretical values of a pair of identical gears in mesh 121 spur gears p s p s a

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