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 |
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
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 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
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 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 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 120mm long, 6mm diameter, 6mm lead is made using an offset flange nut mounted on the left end and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and..
AVAILABLE SOON
Ground Ball Screw 160mm long, 8mm diameter, 8mm lead is made using an offset flange nut mounted on the left end and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and..
AVAILABLE SOON
Ground Ball Screw 100mm long, 6mm diameter, 6mm lead is made using an offset flange nut mounted on the left end and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and..
AVAILABLE SOON
Ground Ball Screw 120mm long, 8mm diameter, 8mm lead is made using an offset flange nut mounted on the left end and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and..
AVAILABLE SOON
Ground Ball Screw 90mm long, 6mm diameter, 1mm lead is made using a square nut and ground to a Grade 3 accuracy for tighter lead tolerance in high-precision positioning applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth, repeatable linear motion to exactly..
AVAILABLE SOON
Ground Ball Screw 160mm long, 8mm diameter, 1mm lead is made using a square nut and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth, repeatable linear motion to exactly..
AVAILABLE SOON
Ground Ball Screw 120mm long, 8mm diameter, 1mm lead is made using a square nut and ground to a Grade 3 accuracy for tighter lead tolerance in high-precision positioning applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth, repeatable linear motion to exactly..
AVAILABLE SOON
Ground Ball Screw 120mm long, 8mm diameter, 1mm lead is made using a square nut and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth, repeatable linear motion to exactly..
AVAILABLE SOON
Ground Ball Screw 180mm long, 12mm diameter, 2mm lead is made using a flanged nut mounted on the left end and ground to a Grade 3 accuracy for tighter lead tolerance in high-precision positioning applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth,..
AVAILABLE SOON
Ground Ball Screw 120mm long, 6mm diameter, 1mm lead is made using a square nut and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth, repeatable linear motion to exactly..
AVAILABLE SOON
Ground Ball Screw 100mm long, 6mm diameter, 1mm lead is made using a square nut and ground to a Grade 5 accuracy for accurate, repeatable positioning in general-purpose automation applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth, repeatable linear motion to exactly..
AVAILABLE SOON
Ground Ball Screw 150mm long, 10mm diameter, 2mm lead is made using a flanged nut mounted on the left end and ground to a Grade 3 accuracy for tighter lead tolerance in high-precision positioning applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth,..
AVAILABLE SOON
Ground Ball Screw 120mm long, 8mm diameter, 2mm lead is made using a flanged nut mounted on the left end and ground to a Grade 3 accuracy for tighter lead tolerance in high-precision positioning applications. Choose a ground ball screw for applications requiring high positioning accuracy, minimal backlash, and smooth,..
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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