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
Miniature ball screw with a cylindrical nut, 6mm diameter, 1mm lead, and 150mm length. The cylindrical nut creates a more compact assembly than a flanged nut. A multi-liner ball-return system supports smooth motion, while polymer wipers help keep debris out. Static axial load capacity is up to 2.144kN (482lb). Standard..
$131.21
Lead screw with a standard round nut, 254mm length, 10mm 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..
$72.57
Miniature ball screw, 6mm 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 travel than 1mm with..
$143.33
Miniature Ball Screw Assembly with a Cylindrical Nut boasting an 8mm screw diameter for enhanced rigidity and a 1mm lead for fine motion control, all within a 150mm length. Enhanced design features include polymer wipers and a multi-liner ball return system. 8 mm diameter provides increased strength for higher load..
$131.21
Miniature Ball Screw Assembly with a Cylindrical Nut and a 500mm length, maximizing the travel distance. With a 10mm diameter and a 2mm lead, it's tailored for applications requiring extended reach without sacrificing precision or load capacity. Extended 500 mm length for maximum travel in the BSR series. 10 mm..
$165.52
Miniature Ball Screw Assembly with a 250mm length, an 8mm screw diameter and 1mm lead for precision positioning. The cylindrical nut design helps in the tightest of spaces. 250 mm length for increased linear travel in compact environments 8 mm diameter enhances the assembly's load-carrying capabilities Fine control with a..
$141.01
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 with an 8mm diameter Grade 10 Ball Screw. Combining speed with extended length, the 250mm version offers the benefits of a 2.5mm lead, suitable for applications requiring quick positioning over longer distances. Flanged nut to the right Extended travel capabilities with enhanced lead for rapid positioning. Durable..
$190.28
Lead Screw with a Rectangle Anti-Backlash Nut featuring a 6mm diameter, 1mm lead, and a length of 254mm, made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking. The Constant Force™ Anti-Backlash nut uses a spring to maintain uniform radial pressure, reducing backlash by 2-4 times..
$80.44
AVAILABLE SOON
Ground ball screw, offset flange nut, Grade 5, 6mm diameter, 6mm lead, 120mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter control of lead accuracy and repeatable positioning. The offset flange nut contains recirculating balls that travel through the..
AVAILABLE SOON
Ground ball screw, offset flange nut, Grade 5, 8mm diameter, 8mm lead, 160mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter control of lead accuracy and repeatable positioning. The offset flange nut contains recirculating balls that travel through the..
AVAILABLE SOON
Ground ball screw, offset flange nut, Grade 5, 6mm diameter, 6mm lead, 100mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter control of lead accuracy and repeatable positioning. The offset flange nut contains recirculating balls that travel through the..
AVAILABLE SOON
Ground ball screw, offset flange nut, Grade 5, 8mm diameter, 8mm lead, 120mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter control of lead accuracy and repeatable positioning. The offset flange nut contains recirculating balls that travel through the..
AVAILABLE SOON
Ground ball screw, square nut, Grade 3, 6mm diameter, 1mm lead, 90mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter lead accuracy and repeatable positioning. The square ball nut contains recirculating balls that travel through the shaft’s helical grooves..
AVAILABLE SOON
Ground ball screw, square nut, Grade 5, 8mm diameter, 1mm lead, 160mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter lead accuracy and repeatable positioning. The square ball nut contains recirculating balls that travel through the shaft’s helical grooves..
AVAILABLE SOON
Ground ball screw, square nut, Grade 3, 8mm diameter, 1mm lead, 120mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter lead accuracy and repeatable positioning. The square ball nut contains recirculating balls that travel through the shaft’s helical grooves..
AVAILABLE SOON
Ground ball screw, square nut, Grade 5, 8mm diameter, 1mm lead, 120mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter lead accuracy and repeatable positioning. The square ball nut contains recirculating balls that travel through the shaft’s helical grooves..
AVAILABLE SOON
Ground ball screw, flanged nut, Grade 3, 12mm diameter, 2mm lead, 180mm 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, square nut, Grade 5, 6mm diameter, 1mm lead, 120mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter lead accuracy and repeatable positioning. The square ball nut contains recirculating balls that travel through the shaft’s helical grooves..
AVAILABLE SOON
Ground ball screw, square nut, Grade 5, 6mm diameter, 1mm lead, 100mm length. Unlike a precision-rolled screw, whose helical thread is formed under pressure, this ball screw is finish-ground for tighter lead accuracy and repeatable positioning. The square ball nut contains recirculating balls that travel through the shaft’s helical grooves..
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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