Technical Data  Reducers  Worm Gear Reducers  Technical Data

Moment of Inertia on Input Shaft (Solid output shaft / Hollow output shaft )(Single Reduction Gear Reducers ：1/10 ～ 1/60)

EWJ/EW Series

Moment of Inertia on Input Shaft {GD2}：×10-3kg・m2{×10-3kgf・m2}
Reduction ratio Size
EWJ25 EWJ35 EWJ42 EWJ50 EWJ63 EWJ70 EW80 EW100 EW125 EW150 EW175 EW200
10 0.005
{0.02}		 0.01
{0.06}		 0.02
{0.10}		 0.17
{0.67}		 0.38
{1.5}		 0.64
{2.5}		 0.8
{3.4}		 2.1
{8.3}		 4.6
{18.3}		 9.2
{36.8}		 16.7
{67.0}		 29.1
{116.6}
15 0.005
{0.02}		 0.01
{0.06}		 0.02
{0.09}		 0.16
{0.65}		 0.36
{1.4}		 0.61
{2.5}		 0.8
{3.1}		 1.9
{7.6}		 4.1
{16.3}		 8.1
{32.4}		 14.4
{57.5}		 24.4
{97.8}
20 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.09}		 0.15
{0.62}		 0.34
{1.4}		 0.57
{2.3}		 0.7
{2.9}		 1.8
{7.1}		 3.5
{14.0}		 6.7
{27.0}		 11.5
{46.2}		 21.5
{86.0}
25 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.15
{0.60}		 0.33
{1.3}		 0.55
{2.2}		 0.7
{2.7}		 1.7
{6.7}		 3.3
{13.1}		 6.0
{23.9}		 10.2
{40.9}		 19.8
{79.4}
30 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.16
{0.63}		 0.35
{1.4}		 0.60
{2.4}		 0.7
{3.0}		 1.8
{7.2}		 3.8
{15.1}		 7.4
{29.8}		 13.0
{51.9}		 21.6
{86.5}
40 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.15
{0.61}		 0.34
{1.3}		 0.57
{2.3}		 0.7
{2.8}		 1.7
{6.8}		 3.3
{13.3}		 6.4
{25.5}		 10.7
{43.0}		 19.9
{79.7}
50 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.15
{0.60}		 0.33
{1.3}		 0.55
{2.2}		 0.7
{2.7}		 1.6
{6.5}		 3.2
{12.7}		 5.7
{22.9}		 9.8
{39.1}		 19.0
{76.0}
60 0.004
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.15
{0.60}		 0.32
{1.3}		 0.54
{2.2}		 0.6
{2.5}		 1.5
{6.2}		 3.1
{12.3}		 5.6
{22.2}		 9.1
{36.4}		 18.6
{74.3}

EWJM(R)/EWM(R) Series

Moment of Inertia on Input Shaft {GD2}：×10-3kg・m2{×10-3kgf・m2}
Reduction ratio Size
EWJM42 EWJM50 EWJM63 EWJM70 EWM80 EWM100 EWM125 EWM150
Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft
10 0.75 2.3
{9.3}		 0.75 2.4
{9.6}		 1.5 6.9
{27.7}		 2.2 9.9
{39.6}		 3.7 21.3
{85.0}		 5.5 40.4
{161.4}		 - -
15 0.4 1.0
{4.2}		 0.75 2.4
{9.6}		 1.5 6.9
{27.6}		 2.2 9.9
{39.54}		 3.7 21.3
{85.0}		 5.5 40.4
{161.4}		 - -
20 0.4 1.0
{4.2}		 0.75 2.4
{9.6}		 1.5 6.9
{27.5}		 2.2 9.8
{39.34}		 3.7 21.3
{85.0}		 5.5 40.1
{160.4}		 - -
25 0.4 1.0
{4.2}		 0.75 2.4
{9.6}		 1.5 6.9
{27.5}		 1.5 7.1
{28.4}		 2.2 10.0
{40.0}		 3.7 22.3
{89.0}		 5.5 41.7
{166.6}		 -
30 0.4 1.0
{4.2}		 0.75 2.4
{9.6}		 1.5 6.9
{27.6}		 1.5 7.2
{28.6}		 2.2 10.0
{40.0}		 3.7 22.3
{89.0}		 5.5 42.2
{168.6}		 -
40 0.2 0.5
{2.0}		 0.4 1.1
{4.5}		 0.75 2.6
{10.3}		 0.75 2.8
{11.2}		 1.5 7.2
{28.8}		 2.2 11.0
{44.04}		 3.7 23.8
{95.0}		 5.5 44.7
{178.6}
50 0.2 0.5
{2.0}		 0.4 1.1
{4.5}		 0.75 2.6
{10.2}		 0.75 2.8
{11.1}		 1.5 7.2
{28.8}		 2.2 11.0
{44.04}		 3.7 23.8
{95.0}		 5.5 44.2
{176.6}
60 0.2 0.5
{2.0}		 0.4 1.1
{4.5}		 0.75 2.6
{10.2}		 0.75 2.8
{11.1}		 1.5 7.2
{28.8}		 2.2 10.8
{43.04}		 3.7 23.5
{94.0}		 5.5 43.9
{175.6}

SWJ/SW Series

Moment of Inertia on Input Shaft {GD2}：×10-3kg・m2{×10-3kgf・m2}
Reduction ratio Size
SWJ25 SWJ35 SWJ42 SWJ50 SWJ63 SWJ70 SW80 SW100 SW125 SW150 SW175 SW200
10 0.005
{0.02}		 0.02
{0.06}		 0.03
{0.11}		 0.09
{0.37}		 0.38
{1.5}		 0.33
{1.3}		 0.8
{3.4}		 2.1
{8.3}		 4.6
{18.3}		 9.2
{36.8}		 16.7
{67.0}		 29.1
{116.6}
15 0.005
{0.02}		 0.01
{0.06}		 0.02
{0.09}		 0.09
{0.35}		 0.36
{1.4}		 0.30
{1.2}		 0.8
{3.1}		 1.9
{7.6}		 4.1
{16.3}		 8.1
{32.4}		 14.4
{57.5}		 24.4
{97.8}
20 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.09}		 0.08
{0.31}		 0.34
{1.4}		 0.29
{1.2}		 0.7
{2.9}		 1.8
{7.1}		 3.5
{14.0}		 6.7
{27.0}		 11.5
{46.2}		 21.5
{86.0}
25 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.08
{0.30}		 0.33
{1.3}		 0.26
{1.0}		 0.7
{2.7}		 1.7
{6.7}		 3.3
{13.1}		 6.0
{23.9}		 10.2
{40.9}		 19.8
{79.4}
30 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.08
{0.33}		 0.35
{1.4}		 0.28
{1.1}		 0.7
{3.0}		 1.8
{7.2}		 3.8
{15.1}		 7.4
{29.8}		 13.0
{51.9}		 21.6
{86.5}
40 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.08
{0.31}		 0.34
{1.3}		 0.29
{1.1}		 0.7
{2.8}		 1.7
{6.8}		 3.3
{13.3}		 6.4
{25.5}		 10.7
{43.0}		 19.9
{79.7}
50 0.005
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.07
{0.30}		 0.33
{1.3}		 0.25
{1.0}		 0.7
{2.7}		 1.6
{6.5}		 3.2
{12.7}		 5.7
{22.9}		 9.8
{39.1}		 19.0
{76.0}
60 0.004
{0.02}		 0.01
{0.05}		 0.02
{0.08}		 0.07
{0.29}		 0.32
{1.3}		 0.23
{0.9}		 0.6
{2.5}		 1.5
{6.2}		 3.1
{12.3}		 5.6
{22.2}		 9.1
{36.4}		 18.6
{74.3}

SWJM(R)/SWM(R) Series

Moment of Inertia on Input Shaft {GD2}：×10-3kg・m2{×10-3kgf・m2}
Reduction ratio Size
SWJM35 SWJM42 SWJM50 SWJM63 SWJM70 SWM80 SWM100 SWM125 SWM150
Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft Motor kW Moment of Inertia on Input Shaft
10 0.2 0.5
{1.9}		 0.4 1.1
{4.2}		 0.75 2.6
{16.5}		 1.5 7.2
{28.9}		 2.2 10.4
{41.6}		 3.7 21.3
{85.0}		 5.5 40.4
{161.6}		 - -
15 0.2 0.5
{1.9}		 0.4 1.0
{4.2}		 0.75 2.6
{16.5}		 1.5 4.5
{28.9}		 1.5 7.1
{28.6}		 3.7 21.3
{85.0}		 5.5 40.4
{161.6}		 - -
20 0.2 0.5
{1.9}		 0.4 1.0
{4.2}		 0.4 1.3
{5.3}		 0.75 2.9
{11.6}		 1.5 7.1
{28.6}		 3.7 21.3
{85.0}		 5.5 40.2
{160.6}		 - -
2.2 10.0
{39.8}
25 0.2 0.5
{1.9}		 0.4 1.0
{4.2}		 0.4 1.3
{5.3}		 0.75 2.9
{11.5}		 1.5 7.1
{28.4}		 2.2 10.0
{40.0}		 3.7 22.3
{89.0}		 5.5 41.7
{166.6}		 -
30 - 0.2 0.5
{2.0}		 0.4 1.3
{5.3}		 0.75 2.9
{11.6}		 0.75 2.8
{11.3}		 2.2 10.0
{40.0}		 3.7 22.3
{89.0}		 5.5 42.2
{168.6}		 -
40 - 0.2 0.5
{2.0}		 0.4 1.3
{5.3}		 0.75 2.9
{11.5}		 0.75 2.8
{11.3}		 1.5 7.2
{28.8}		 2.2 11.0
{44.0}		 3.7 23.8
{95.0}		 5.5 44.7
{178.6}
50 - 0.2 0.5
{2.0}		 0.4 1.3
{5.3}		 0.75 2.9
{11.5}		 0.75 2.8
{11.2}		 1.5 7.2
{28.8}		 2.2 11.0
{44.0}		 3.7 23.8
{95.0}		 5.5 44.2
{176.6}
60 - 0.2 0.5
{2.0}		 0.4 1.3
{5.3}		 0.75 2.9
{11.5}		 0.75 2.8
{11.1}		 1.5 7.2
{28.8}		 2.2 10.8
{43.0}		 3.7 23.5
{94.0}		 5.5 43.9
{175.6}

※For motors with brakes, add the moment of inertia and GD2 listed in the Brake Characteristics table.