Yaskawa Large Capacity Sigma II Series - Manual (Page 283)

7.1 Selecting a Σ-II Series Servodrives
7-7
7
Rack and Pinion
Load mass W kg
Thrust F N
Friction coefficient µ
Overall efficiency η
Deceleration ratio R (=N
M
/N
L
)
Gear + coupling Jg kg
•
cm 2
Pinion diameter D mm
Pinion thickness t mm
Roll Feeder
Load moment of inertia J
W kg • cm
2
Tension F N
Press force P N
Roller diameter D mm
Friction coefficient µ
Overall efficiency η
Deceleration ratio R (=N
M
/N
L
)
Gear + coupling Jg
kg
•
cm 2
Rotor
Load moment of inertia J
L kg • cm
2
Load torque T
L
kg • cm
Overall efficiency η
Deceleration ratio R (=N
M
/N
L
)
Gear + coupling Jg
kg
•
cm 2
Others
Load moment of inertia J
L kg
•
cm 2
Load torque T
L
N • m
Motor speed N
M min -1
Duty t c s
Positioning time t s s
Accel/decel time t a s
Table 7.1 Machine Data Table (cont’d)
D
W
F
Pinion
Rack
Motor
Gear + coupling
Jg
D
Jw
F Roller
P Press force
Gear + coupling
Jg
Motor
Gear + coupling
Jg
J
T
L
L
Motor