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 |
70 Products
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 |
26 Products
Miniature ball screw assembly, 8mm diameter, 2.5mm lead, 150mm length — delivering faster travel per revolution while maintaining precision in a compact form factor. BSR series with Grade 10 accuracy class for reliable linear motion in space-constrained applications. 8mm diameter with a unique 2.5mm lead for efficient and rapid positioning...
$134.15
Miniature ball screw assembly with a cylindrical nut, featuring an 8 mm diameter, 2 mm lead, and 250 mm length for compact, efficient linear motion with precise, fast positioning. Grade 10 accuracy class. Equipped with wipers. The 2 mm lead is suitable for rapid adjustments. Durable, corrosion-resistant design supports high..
$141.01
Miniature ball screw assembly, 8mm diameter, 2mm lead, 150mm length — delivering faster travel per revolution while maintaining precision in a compact form factor. BSR series with Grade 10 accuracy class for reliable linear motion in space-constrained applications. 2mm lead offers a compromise between speed and positional accuracy. 150mm length..
$131.21
Miniature Ball Screw Assembly with a Cylindrical Nut offers a 250mm rail with an 8mm screw diameter and a 2.5mm lead, designed for applications requiring quick movement over longer distances within a minimal footprint. Extended 250mm length accommodates more extensive linear movements. The 2.5mm lead increases travel efficiency, ideal for..
$145.91
Miniature ball screw assembly with a 10 mm diameter, 2 mm lead, and 200 mm length, delivering precise, controlled linear motion in a compact form. The fine lead enables high positioning accuracy, while the robust design supports static axial loads up to 2.144 kN for strength and reliability. Built for..
$136.10
Miniature Ball Screw Assembly features a 6mm diameter, a 1mm lead, and a 150mm length. The flanged nut simplifies mounting to plates or blocks, enhancing ease of installation and removal in compact applications. 6 mm diameter and 1 mm lead for precise linear movements. 150 mm length ideal for small-scale..
$175.58
Miniature Ball Screw Assembly (6 mm, 1 mm, 250 mm). Extending the reach, this 250 mm ball screw assembly maintains compactness while allowing for longer linear motion, featuring a flanged nut to the right for easy integration into design frameworks. Ideal for applications requiring fine control and high load capacity...
$185.37
Miniature Ball Screw Assembly unique for its 2.5 mm lead and 8mm screw diameter. This 150mm long assembly provides faster travel per rotation, making it ideal for dynamic applications where speed and compact size are crucial. Higher lead for increased travel speed. Compact 150 mm length suitable for applications with..
$178.51
Miniature Ball Screw Assembly model with a 1mm screw lead and screw diameter of 8mm, which enhances the assembly's load-bearing capabilities. The 150mm length and flanged nut (threading to the right) make it versatile for medium-scale applications. 8 mm diameter provides enhanced strength and load capacity. The flanged nut (to..
$175.58
Ball Screw Assembly offering more extended travel with the reliability of an 8mm screw diameter and a lead of 1mm. This 250mm ball screw assembly is designed for projects requiring both precision and length. Designed to withstand demanding operational conditions with high static axial load capacity. Increased length for more..
$185.37
Ball screw assembly featuring a 10mm diameter screw and 2mm lead, with an extended 500mm length for applications requiring longer travel distances. The Grade 10 screw is made from induction-hardened 1050 steel. The cylindrical right-hand threaded flanged nut features a robust multi-liner ball return system, ensuring smooth, precise motion and..
$209.89
Ball Screw Assembly with a Flanged Nut, made in the USA with an 8mm screw diameter, a 2mm lead and a 150mm length. This model, designed for compact applications, features a flange nut to the right that simplifies both installation and removal. The flanged nut is engineered for easy attachment..
$175.58
Miniature Ball Screw Assembly with a 10mm diameter, a 2mm lead and length of 200mmm. The Grade 10 screw is made from induction-hardened 1050 steel. The cylindrical right-hand threaded flanged nut features a robust multi-liner ball return system, ensuring smooth, precise motion and enhanced durability. 10 mm diameter for high..
$180.47
Lead screw with a standard round nut, 508mm length, 16mm diameter, 5mm lead, and made of precision-rolled 300 Series stainless steel coated with PTFE to reduce friction and prevent flaking. With an exceptional lead accuracy of 0.003"/ft (76 µm/300 mm), the lead screw exceeds industry standards, providing improved straightness, a..
$129.20
Lead Screw with a Round Anti-Backlash Nut and a 16mm diameter, 5mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$149.75
Lead screw with a standard round nut, 508mm length, 16mm diameter, 1mm lead, and made of precision-rolled 300 Series stainless steel coated with PTFE to reduce friction and prevent flaking. With an exceptional lead accuracy of 0.003"/ft (76 µm/300 mm), the lead screw exceeds industry standards, providing improved straightness, a..
$129.20
Lead Screw with a Round Anti-Backlash Nut and a 16mm diameter, 1mm lead, and a length of 508mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Round Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4..
$149.75
Lead screw with a standard triangle nut, 12mm diameter, 5mm lead, 508mm length, and made of precision-rolled 300 Series stainless steel coated with PTFE to reduce friction and prevent flaking. With exceptional lead accuracy of 0.003"/ft (76 µm/300 mm) and precision straightening from the only automated CNC lead screw straightening..
$121.23
Lead screw with a standard round nut, 508mm length, 12mm diameter, 5mm lead, and made of precision-rolled 300 Series stainless steel coated with PTFE to reduce friction and prevent flaking. With an exceptional lead accuracy of 0.003"/ft (76 µm/300 mm), the lead screw exceeds industry standards, providing improved straightness, a..
$121.23
Lead screw with a standard triangle nut, 12mm diameter, 1mm lead, 508mm length, and made of precision-rolled 300 Series stainless steel coated with PTFE to reduce friction and prevent flaking. With exceptional lead accuracy of 0.003"/ft (76 µm/300 mm) and precision straightening from the only automated CNC lead screw straightening..
$121.23
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?
A screw lead is the distance a nut or screw moves axially in one full rotation. It is often confused with thread pitch, or the distance between adjacent threads measured along the screw. On a single-start screw, pitch equals lead; on multi-start screws, lead equals pitch multiplied by the number of thread starts.
What is the difference between screw pitch, screw start and screw lead?
Screw pitch is the axial distance between adjacent threads. A screw start is an independent thread path wrapped around the screw. Screw lead is the axial distance traveled in one full rotation. On a single-start screw, pitch and lead are the same. On multi-start screws, lead equals pitch multiplied by the number of starts.
What does axial movement mean?
Axial movement means motion along the lengthwise centerline of a shaft, screw, axle, or similar part. On a car or truck, axial movement would be motion along the axle from side to side, rather than spinning around it. In ball screw and lead screw systems, axial movement is the straight-line travel produced along the screw’s length.
What does NEMA mean?
NEMA refers to motor frame size standards from the National Electrical Manufacturers Association. In linear motion systems, NEMA sizes such as NEMA 08, 11, 17, or 23 describe the motor mounting face size, helping users match motors, mounts, and actuator assemblies.
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