technical data linear actuator Linipower Jack technical data
Allowable screw shaft rotation speed
For traveling nut specifications where the screw shaft rotates, the rotation speed of the screw shaft should be equal to or less than the value calculated using the formula below.
If the allowable screw shaft rotation speed is exceeded, increase the jack frame number and recalculate.
(Please be sure to consider this when using the standard stroke of the H speed with an input rotation speed of 900 r/min or more, or when using a stroke longer than the standard stroke.)
NC = 96×n×d×106 L2
N C: Allowable screw shaft rotation speed r/min
d: Thread root diameter mm (See Major Specifications page for each product.)
n: Support coefficient
- (1) Free shaft end: n = 0.36
- (2) Shaft end support: n = 1.56
L: Distance between supports mm (See the dimension table for each frame number.)
NS = N R
N S: Screw shaft rotation speed r/min
N: Input rotation speed r/min
R: Worm speed ratio
Make sure that N C > N S.
(1) Shaft end free
(2) Shaft end support
(calculation example)
JWM200URH20D input rotation speed 1200 r/min,
When operating with shaft end support.
The screw shaft rotation speed NS is
NS = 1200 8 = 150r/min
*From product dimensions table
NC = 96×1.56×51.3×106 22372 = 1535r/min
NC = 1535r/min > NS = 150r/min ... OK
