YASKAWA E Series Product Manual page 52

Specifications,
Ratings, and External
Dimensions of
SGM7J Servomotors
This chapter describes how to interpret the model numbers
of SGM7J Servomotors and gives their specifications, rat-
ings, and external dimensions.
4.1 Model Designations . . . . . . . . . . . . . . . . . . 4-2
4.1.1 Without Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.2 With Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.2 Specifications and Ratings . . . . . . . . . . . . . 4-3
4.2.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2.2 Ratings of Servomotors without Gears . . . . . . . . 4-4
4.2.3 Torque-Motor Speed Characteristics . . . . . . . . . 4-5
4.2.4 Ratings of Servomotors with Gears . . . . . . . . . . . 4-6
4.2.5 Servomotor Overload Protection
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.2.6 Load Moment of Inertia . . . . . . . . . . . . . . . . . . . . 4-9
4.2.7 Allowable Load Moment of Inertia Scaling
Factor for SERVOPACKs without Built-in
Regenerative Resistors . . . . . . . . . . . . . . . . . . . 4-10
4.2.8 Servomotor Heat Dissipation Conditions . . . . . 4-11
4.2.9 Applications Where the Surrounding Air
Temperature of the Servomotor Exceeds
40°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.2.10 Applications Where the Altitude of
the Servomotor Exceeds 1,000 m . . . . . . . . . . . 4-12
4.3 External Dimensions . . . . . . . . . . . . . . . . . 4-13
4.3.1 Servomotors without Gears . . . . . . . . . . . . . . . . 4-13
4.3.2 Shaft End Specifications . . . . . . . . . . . . . . . . . . 4-15
4.3.3 Connector Mounting Dimensions . . . . . . . . . . . 4-16
4.3.4 Servomotors with Gears . . . . . . . . . . . . . . . . . . 4-17
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