Page 49 - CATALOGUE
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2. Relationship between thrust and torque
Torque or thrust can be obtained by formula (2)~(4), when a thrust or a torque
is implemented
1) Drive torque of needed thrust
................................（2）
T: Drive torque
F a: Axial load
F a = μ×mg
μ: Friction coefficient of the guide way
g: Gravitation acceleration (9.8m/s)
m: Work mass (kg)
L: Feed screw lead (mm)
η: Feed screw normal efficiency (table 1)
2) Thrust converted from torque
...........................(3)
F a: Thrust (N)
T: Drive torque (Nmm)
ρh: Feed screw lead (mm)
η 1: Normal efficiency (table1)
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