Technical Data  Reducers  Small-Size Gear Motor  Selection

Moment of Inertia of Motor Shaft

1. Gear Motor and Hypoid Motor TA/TR Series

(・SI Unit :Moment of Inertia  ・Gravity unit :GD2)
Motor Capacity Motor Specifications Three-phase motor, non-brake Three-phase motor, brake
Moment of Inertia GD2 Moment of Inertia GD2
kg・m2 {kgf・m2} kg・m2 {kgf・m2}
0.1kW Standard/inverter motor 0.64×10-3 {2.54×10-3} 0.66×10-3 {2.64×10-3}
0.2kW Standard/inverter motor 0.74×10-3 {2.96×10-3} 0.78×10-3 {3.12×10-3}
0.4kW Standard/inverter motor 0.90×10-3 {3.59×10-3} 0.94×10-3 {3.74×10-3}
0.75kW Standard 1.83×10-3 {7.32×10-3} 1.94×10-3 {7.76×10-3}
1.5kW Standard 6.2×10-3 {24.8×10-3} 6.4×10-3 {24.8×10-3}
2.2kW Standard 8.8×10-3 {35.2×10-3} 9.3×10-3 {37.2×10-3}
3.7kW Standard 16.7×10-3 {66.8×10-3} 17.2×10-3 {68.8×10-3}
5.5kW Standard 32.3×10-3 {129.2×10-3} 34.1×10-3 {136.4×10-3}

2. Croise Motor CSMA Series

(・SI Unit :Moment of Inertia  ・Gravity unit :GD2)
Motor Capacity 0.1kW 0.2kW 0.4kW 0.55kW
Brake No brake With brake No brake With brake No brake With brake No brake With brake
Reduction ratio
1/10~1/30
Moment of Inertia
kg・m2
0.66×10-3 0.69×10-3 0.66×10-3 0.70×10-3 0.95×10-3 0.99×10-3 1.31×10-3 1.35×10-3
GD2
{kgf・m2}
{2.65×10-3} {2.75×10-3} {2.65×10-3} {2.81×10-3} {3.81×10-3} {3.96×10-3} {5.25×10-3} {5.40×10-3}
Reduction ratio
1/40~1/60
Moment of Inertia
kg・m2
0.66×10-3 0.69×10-3 0.69×10-3 0.73×10-3 1.02×10-3 1.06×10-3 1.38×10-3 1.42×10-3
GD2
{kgf・m2}
{2.65×10-3} {2.75×10-3} {2.75×10-3} {2.91×10-3} {4.08×10-3} {4.23×10-3} {5.52×10-3} {5.67×10-3}

3. Croise Motor CSMR Series

(・SI Unit :Moment of Inertia  ・Gravity unit :GD2)
Motor Capacity 0.75kW 1.5kW 2.2kW 3.7kW 5.5kW
Brake No brake With brake No brake With brake No brake With brake No brake With brake No brake With brake
Reduction ratio
1/10

1/30
Moment of Inertia
kg・m2
1.96×10-3 2.07×10-3 6.13×10-3 6.36×10-3 8.25×10-3 8.46×10-3 1.57×10-2 1.62×10-2 3.07×10-2 3.24×10-2
GD2
{kgf・m2}
{7.82×10-3} {8.26×10-3} {2.45×10-2} {2.54×10-2} {3.30×10-2} {3.38×10-2} {6.26×10-2} {6.46×10-2} {1.23×10-1} {1.29×10-1}
Reduction ratio
1/40

1/60
Moment of Inertia
kg・m2
2.21×10-3 2.32×10-3 6.21×10-3 6.44×10-3 8.69×10-3 8.90×10-3 1.66×10-2 1.71×10-2 3.07×10-2 3.24×10-2
GD2
{kgf・m2}
{8.86×10-3} {9.30×10-3} {2.49×10-2} {2.58×10-2} {3.47×10-2} {3.56×10-2} {6.64×10-2} {6.84×10-2} {1.23×10-1} {1.29×10-1}

4. Croise Motor HCMA Series

(・SI Unit :Moment of Inertia  ・Gravity unit :GD2)
Motor Capacity 0.1kW 0.2kW 0.4kW 0.55kW
Brake No brake With brake No brake With brake No brake With brake No brake With brake
Reduction ratio
1/40~1/75
Moment of Inertia
kg・m2
0.66×10-3 0.69×10-3 0.66×10-3 0.70×10-3 0.92×10-3 0.96×10-3 1.29×10-3 1.33×10-3
GD2
{kgf・m2}
{2.65×10-3} {2.75×10-3} {2.65×10-3} {2.81×10-3} {3.67×10-3} {3.82×10-3} {5.15×10-3} {5.30×10-3}
Reduction ratio
1/90~1/150
Moment of Inertia
kg・m2
0.66×10-3 0.69×10-3 0.66×10-3 0.70×10-3 0.96×10-3 1.00×10-3 1.29×10-3 1.33×10-3
GD2
{kgf・m2}
{2.65×10-3} {2.75×10-3} {2.65×10-3} {2.81×10-3} {3.83×10-3} {3.98×10-3} {5.16×10-3} {5.31×10-3}
Reduction ratio
1/180~1/200
Moment of Inertia
kg・m2
0.66×10-3 0.69×10-3 0.66×10-3 0.70×10-3 0.95×10-3 0.99×10-3 1.29×10-3 1.33×10-3
GD2
{kgf・m2}
{2.65×10-3} {2.75×10-3} {2.65×10-3} {2.81×10-3} {3.81×10-3} {3.96×10-3} {5.17×10-3} {5.32×10-3}
Reduction ratio
1/240~1/300
Moment of Inertia
kg・m2
0.66×10-3 0.69×10-3 0.68×10-3 0.72×10-3 0.97×10-3 1.01×10-3 1.37×10-3 1.41×10-3
GD2
{kgf・m2}
{2.65×10-3} {2.75×10-3} {2.73×10-3} {2.89×10-3} {3.87×10-3} {4.02×10-3} {5.47×10-3} {5.62×10-3}

5. Croise Motor HCMR Series

(・SI Unit :Moment of Inertia  ・Gravity unit :GD2)
Motor Capacity 0.75kW 1.5kW 2.2kW 3.7kW 5.5kW
Brake No brake With brake No brake With brake No brake With brake No brake With brake No brake With brake
Reduction ratio
1/40

1/75
Moment of Inertia
kg・m2
1.86×10-3 1.97×10-3 5.85×10-3 6.08×10-3 7.88×10-3 8.11×10-3 1.49×10-2 1.53×10-2 1.57×10-2 1.57×10-2
GD2
{kgf・m2}
{7.44×10-3} {7.88×10-3} {2.34×10-2} {2.43×10-2} {3.15×10-2} {3.24×10-2} {5.94×10-2} {6.14×10-2} {6.28×10-2} {6.30×10-2}
Reduction ratio
1/90

1/150
Moment of Inertia
kg・m2
1.86×10-3 1.97×10-3 5.85×10-3 6.08×10-3 7.88×10-3 8.11×10-3 1.49×10-2 1.53×10-2 1.57×10-2 1.57×10-2
GD2
{kgf・m2}
{7.44×10-3} {7.88×10-3} {2.34×10-2} {2.43×10-2} {3.15×10-2} {3.24×10-2} {5.94×10-2} {6.14×10-2} {6.28×10-2} {6.30×10-2}
Reduction ratio
1/180

1/200
Moment of Inertia
kg・m2
1.89×10-3 2.00×10-3 5.86×10-3 6.08×10-3 7.88×10-3 8.11×10-3 1.49×10-2 1.53×10-2 -
GD2
{kgf・m2}
{7.56×10-3} {8.00×10-3} {2.34×10-2} {2.43×10-2} {3.15×10-2} {3.24×10-2} {5.94×10-2} {6.14×10-2} -
Reduction ratio
1/240

1/300
Moment of Inertia
kg・m2
1.89×10-3 2.00×10-3 5.86×10-3 6.08×10-3 7.88×10-3 8.11×10-3 1.49×10-2 1.53×10-2 -
GD2
{kgf・m2}
{7.56×10-3} {8.00×10-3} {2.34×10-2} {2.43×10-2} {3.15×10-2} {3.24×10-2} {5.94×10-2} {6.14×10-2} -

Note )Common to foot mount, face mount, and hollow shaft types.

6. Hypoid Motor Mini Series

Motor Capacity Three-phase, non-brake Single-phase, non-brake Three-phase, brake Single-phase, brake
Moment of Inertia GD2 Moment of Inertia GD2 Moment of Inertia GD2 Moment of Inertia GD2
kg・m2 {kgf・m2} kg・m2 {kgf・m2} kg・m2 {kgf・m2} kg・m2 {kgf・m2}
40W 1.84×10-4 {7.35×10-4} 2.07×10-4 {8.27×10-4} 1.86×10-4 {7.45×10-4} 2.09×10-4 {8.37×10-4}
60W 1.62×10-4 {6.46×10-4} 1.93×10-4 {7.73×10-4} 1.64×10-4 {6.56×10-4} 1.96×10-4 {7.83×10-4}
90W 2.15×10-4 {8.61×10-4} 1.93×10-4 {7.73×10-4} 2.18×10-4 {8.71×10-4} -