Home > Customized & Services > Support Centre > Tool > Motor Sizing Tools > Ball Screw > Ball Screw Advanced Calculation

Ball Screw Advanced Calculation

Input

View motor selection steps

g: Gravity Acceleration 9.8 m/s2
Ball Screw
p: Ball Screw Lead m
D: Ball Screw Diameter m
mB Ball Screw Mass kg
η: Ball Screw Efficiency
Load
F: External Force N
m: Mass kg
μ: Friction Coefficient Reference Table
Operating Mode
v: Velocity m/s
t1: Acceleration Time s
t2: Constant Velocity Time s
t3: Deceleration Time s
ts: Stopping Time s
Others
JM: Motor Inertia
(Default load/rotor inertia ratio is 5:1)
kg·m2
k: Safety Factor
(ref: 1~2)
PA: Positioning Accuracy m



Output

Inertia
JW: Load Inertia kg·m2
JB: Ball Screw Inertia kg·m2
JL: Motor Shaft Conversion Load Inertia kg·m2
Torque
M: Motor Shaft Conversion Load Torque Nm
MA: Additional Acceleration Torque Nm
MD: Additional Deceleration Torque Nm
M1: Acceleration Torque Nm
M2: Uniform Torque Nm
M3: Deceleration Torque Nm
MRMS: Root Mean Square Torque Nm
MMAX: Required Maximum Torque Nm
MR: Required Rated Torque Nm
Power
PMAX: Required Maximum Power kW
PR: Required Rated Power kW
Kinematics
a1: Linear Acceleration m/s2
a2: Linear Deceleration m/s2
n: Speed of Rotation rpm