Choose Your Screw Type

What are the differences?

Please select a screw type.

Force and Speed Requirements

Max Force lbf
Max Speed in/sec
Screw Length in
Please enter a valid thread length.
Screw Mount Style
Anti-Backlash Technology
Selected Screw

Lead screws should be sized to operate at or below 80% of the critical speed. Critical speed is the lowest rotational speed at which the screw shaft is in resonance.

Several factors help to determine critical speed including:

  • Screw diameter
  • Length between bearing supports
  • Type of bearing supports used

Lead screws should be loaded in axial compression to levels below their maximum column loading. Exceeding the maximum column loading can result in instability due to screw bending or buckling. These charts limit the screw slenderness ratios based on the type of screw support selected.

Please note that the PV limit of the nut is dependent on the duty of the application and other factors so these curves are a guideline. If your application will operate near or beyond the shown curves, please contact PBC Linear for support.

Optional Motor

Max Current amp
Max Voltage vdc
Selected Motor
Please select a motor option.

Additional Options

Left End Machining
Please select a journal.
Right End Machining
Please select a journal.
Nut Flange
Please select a flange.
Image 1

Recommended Screw

Part Number

Part Number Here


Application Requirements

Given Specifications

Max Force:
Max Speed:
Thread Length:
Max Current:
Max Voltage:


Screw Specifications

Screw Length:
Left End Machining:
Right End Machining:
Thread Length:

Motor Specifications

Part Number:
NEMA Size:
Step Angle:
Rated Voltage:
Rated Current:
Holding Torque:
No of Leads:
Motor Weight: