Ball Screws and Lead Screws
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Motorized Ball Screw Assemblies
| MAX Horizontal Payload | 2.144 kN (482 lb) |
| MAX Stroke | 1650 mm (65 inches) |
| MAX Rotational Speed | Up to 5,000* RPM |
| * For faster options, contact factory |
Motorized Lead Screw Assemblies
| MAX Horizontal Payload | 1.16 kN (260 lb) |
| MAX Stroke | 1650 mm (65 inches) |
| MAX Rotational Speed | Up to 2,500* RPM |
| * For faster options, contact factory |
Ball screws and lead screws are threaded rods that convert rotary motion into linear motion. In standard designs, the screw rotates while a matching load-carrying nut travels axially without rotating. In other designs, the nut rotates while the screw pushes in and out axially without rotating. Rotating motion is converted into linear motion as moving threads on one component act against stationary threads on the other. The direction of travel depends on thread handedness and rotation direction, while screw lead—the axial distance traveled per full revolution—and rotational speed determine how far and how fast the nut or screw moves. Ball screws use recirculating balls for high efficiency and low friction, while lead screws rely on sliding thread contact for simpler, more cost-effective motion control.
PBC Linear ball screws use helical grooves to guide recirculating ball bearings through the nut, enabling low-friction linear motion, high efficiency, and accurate, repeatable travel. Made in the USA from precision-rolled 1050 steel, they are available in 6mm, 8mm, and 10mm diameters with 1mm, 2mm, and 2.5mm leads, providing six metric diameter-and-lead combinations. PBC Linear ball screw nuts are offered in cylindrical or flanged configurations and use a multi-liner ball-return system to recirculate the balls, along with polymer seals that help protect the internal rolling elements from contamination.
Lead screws rely on direct sliding contact between the screw threads and a matching nut to convert rotary motion into linear movement. PBC Linear PTFE-coated stainless steel lead screws provide corrosion resistance, low wear, reduced friction, and minimal flaking. They are available in 6mm, 8mm, 10mm, 12mm, and 16mm diameters with a wide range of lead options and can be paired with round, triangular, rectangular, or Constant-Force Anti-Backlash nuts to minimize play. Certain PBC Linear ball screw and lead screw combinations are compatible with NEMA 08–23 motors or hand cranks, allowing them to function as screw-driven linear actuators for compact positioning, adjustment, and automation applications.
- Ball Screw Diameters: 6, 8, and 10mm
- Ball Screw Lead Sizes: 1, 2, and 2.5mm
- Ball Screw Nut Fit: Standard and Transitional
- Ball Screw Nut Profiles: cylindrical, flanged and externally threaded cylindrical nuts
- Lead Screw Diameters: 6, 8, 10, 12, and 16 mm
- Lead Screw Lead Sizes: 1, 2, 2.5, 4, 5, 6, 8 , 10, 12, and 25mm
- Lead Screws have round and triangular nuts
- Lead Screws made of stainless steel with a PTFE coating to prevent flaking
More Features of Ball Screw & Lead Screw Assemblies
Frequently Asked Questions
What is a screw lead?
What is the difference between screw pitch, screw start and screw lead?
What does axial movement mean?
What does NEMA mean?
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