Ball Screws and Lead Screws
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Ball Screw Linear Actuators
| 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 |
77 Products
Lead Screw Linear Actuators
| 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 |
51 Products
AVAILABLE SOON
Ground ball screw, flanged nut, Grade 3, 4mm diameter, 1mm lead, 100mm length. Unlike a precision-rolled ball screw, whose helical thread form is produced by rolling the steel under pressure, this ball screw is precision-ground to achieve tighter lead accuracy and more repeatable positioning. Grade 3 is the highest accuracy..
AVAILABLE SOON
Ground ball screw, flanged nut, Grade 3, 6mm diameter, 1mm lead, 100mm length. Unlike a precision-rolled ball screw, whose helical thread form is produced by rolling the steel under pressure, this ball screw is precision-ground to achieve tighter lead accuracy and more repeatable positioning. Grade 3 is the highest accuracy..
AVAILABLE SOON
Ground ball screw, flanged nut, Grade 3, 4mm diameter, 1mm lead, 80mm length. Unlike a precision-rolled ball screw, whose helical thread form is produced by rolling the steel under pressure, this ball screw is precision-ground to achieve tighter lead accuracy and more repeatable positioning. Grade 3 is the highest accuracy..
Miniature ball screw, 6mm diameter, 2mm lead, 250mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 2mm lead supports faster travel while still supporting..
$155.09
Ball screw of 10mm diameter, 2mm lead, 500mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 2mm lead supports faster travel than 1mm but..
$177.64
Ball screw, 8mm diameter, 2.5mm lead, 250mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 2.5mm lead supports faster travel while the Grade 10..
$158.03
Miniature ball screw assembly with an 8 mm diameter Grade 10 screw and 2 mm lead, combining precise motion with a longer 250 mm travel for fast positioning over extended distances. A cylindrical nut with right-hand external threads enables simple, secure mounting, while precision-rolled construction maintains accuracy across the full..
$153.13
Ball screw, 8mm diameter, 1mm lead, 250mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 1mm lead supports fine positioning and controlled linear travel,..
$153.13
Miniature ball screw, 6mm diameter, 1mm lead, 250mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 1mm lead supports fine positioning and controlled linear..
$153.13
Ball screw, 10mm diameter, 2mm lead, 250mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 2mm lead supports applications requiring quick positioning over longer..
$148.22
Miniature ball screw, 8mm diameter, 2.5mm lead, 150mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 2.5mm lead supports applications requiring quick positioning, while..
$146.27
Miniature ball screw, 8mm diameter, 2mm lead, 150mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 2mm lead supports faster positioning and controlled linear..
$143.33
Miniature ball screw, 8mm diameter, 1mm lead, 150mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 1mm lead supports fine positioning and controlled linear..
$143.33
Miniature ball screw, 6mm diameter, 1mm lead, 150mm length, with a TRS cylindrical nut featuring right-facing external mounting threads. Unlike the smooth CNS nut with polymer wipers, the TRS nut mounts directly into a mating threaded component and has no wipers. The 1mm lead supports fine positioning and controlled linear travel,..
$143.33
Miniature Ball Screw Assembly with a Flanged Nut, an 8mm screw diameter, a 2mm lead and 250mm length - This specific model boasts a user-friendly flanged nut to the right, enabling effortless integration into your assemblies. It is designed for secure mounting to plates or blocks, courtesy of the conveniently..
$185.37
Miniature ball screw with a cylindrical nut, 6mm diameter, 1mm lead, and 250mm length. The longer screw provides more travel while keeping a compact design. A multi-liner ball-return system supports smooth motion, and polymer wipers help keep debris out. The cylindrical nut fits into a matching housing, while a keyway..
$141.01
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
Ball screws and lead screws are threaded steel rods that convert rotary motion into linear motion using a matching load-carrying nut that moves and positions a load along a straight axis. Ball screws use recirculating ball bearings that roll between helical raceway grooves in the rod and nut to reduce friction and provide high efficiency, accuracy, and load capacity, while lead screws use direct sliding contact between matching threads on the rod and nut for simpler, more cost-effective linear motion. In a typical system, the rod rotates while the nut travels axially without rotating; other designs rotate the nut while the rod moves axially. 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 rod moves.
PBC Linear ball screws use helical grooves to guide recirculating ball bearings through the nut, providing low-friction linear motion with high efficiency and accurate, repeatable travel. Made in the USA from precision-rolled 1050 steel, PBC Linear ball screws are available in 6mm, 8mm, and 10mm diameters with 1mm, 2mm, and 2.5mm leads, providing six metric diameter-and-lead combinations. Matching ball screw nuts are available in cylindrical and flanged configurations and use a multi-liner ball-return system to continuously recirculate the balls, with polymer seals helping protect the internal rolling elements from contamination.
Lead screws use direct sliding contact between the threads of a steel rod and a matching nut to convert rotary motion into linear movement. PBC Linear PTFE-coated stainless steel lead screws provide corrosion resistance, low friction, low wear, and minimal coating flaking. Available in 6mm, 8mm, 10mm, 12mm, and 16mm diameters with a wide range of lead options, they can be paired with round, triangular, rectangular, or Constant-Force Anti-Backlash nuts to minimize axial play. Select PBC Linear ball screw and lead screw configurations are compatible with NEMA 08–23 motors or hand cranks, creating 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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