Home
Back
Lead Calculation Formula:
| From: | To: |
THK ball screw lead calculation determines the linear travel distance per revolution of the screw. The lead is a critical parameter in ball screw selection and affects the system's speed, resolution, and torque requirements.
The calculator uses the lead calculation formula:
Where:
Explanation: The formula calculates the linear distance the ball screw nut travels per revolution based on the desired linear speed and rotational speed.
Details: Accurate lead calculation is essential for proper ball screw selection, ensuring the system meets performance requirements for speed, precision, and load capacity in linear motion applications.
Tips: Enter the desired linear speed in mm/s and the rotational speed in RPM. Both values must be positive numbers greater than zero.
Q1: What is the difference between lead and pitch?
A: Lead is the linear distance the nut travels per revolution, while pitch is the distance between screw threads. For single-start screws, lead equals pitch.
Q2: How does lead affect system performance?
A: Larger leads provide higher linear speeds but require more torque. Smaller leads offer higher resolution and precision but lower maximum speeds.
Q3: What are typical lead values for THK ball screws?
A: THK ball screws typically range from 1mm to 50mm lead, with common values between 5-20mm for general industrial applications.
Q4: How does lead affect motor selection?
A: Higher leads require motors with higher torque output but can operate at lower RPMs. Lower leads allow for smaller motors but require higher RPM operation.
Q5: Can this calculator be used for multi-start screws?
A: This calculator provides the effective lead. For multi-start screws, the actual mechanical lead would be the calculated value divided by the number of starts.