Tol-O-Matic System Compatibility - Industrial and Bearing Supplies

ENGINEERING RESOURCES
Screw Drive Torque (cont.):
T FRICTION =
F T
2πpe
(
16 oz.
)
lb
(
1
)
me′
(oz.-in.)
F T = See Friction Table in Actuator Sections
OR
µ(W LOAD
+ W OTHER
)
(lbs.)
T PRELOAD
=
See Preload Torque in
Actuator Sections
(
1
) x
me′
(oz.-in.)
T GRAVITY =
(W LOAD
+ W OTHER
) sin ø
2πpe
(
16 oz.
)
lb
(
1
)
me′
(oz.-in.)
=
F EXT.
2πpe
(
16 oz.
)
lb
(
1
)
me′
T EXT.
- + -
(oz.-in.)
Screw-Drive Thrust: Delivered by Nut
lb.
Thrust = 2πpe(e′m)
( )
16 oz.
J REFL
Screw-Reflected Inertia:
J LS ( )
m
ω
T TOTAL + J RD
J MOTOR
T
{ [ PRELOAD
e′ ]
386
}
= J + + (oz.-in. 2 LOAD
J LS
J RD
)
(lbs.)
144