Non-Captive Lead Screw Linear Actuator Motor Assemblies

Non-Captive Lead Screw Linear Actuators

Non-captive lead screw linear actuators are motorized assemblies in which the lead screw passes completely through the motor rather than being axially captured within the motor assembly. In a typical PBC Linear configuration, the screw is supported or fixed at both ends and rotates, while the motor and attached load are forced to travel linearly along the screw. This through-screw design allows the motorized load carriage to move along a fixed screw path, supporting compact layouts, longer travel lengths, and flexible machine integration. In other mounting arrangements, the motor may be held stationary while the screw moves axially through the motor as it rotates. Because non-captive systems do not include an internal guide mechanism, external linear guides are typically used to maintain alignment, increase stiffness, support applied loads, prevent screw deflection, and improve system life. Available in NEMA 08, 11, 14, 17, and 23 frame sizes, these actuators support a wide range of compact motion control applications.

More About Non-Captive Lead Screw Linear Actuators

Ways to Order

Catalog Preview
Download PDF Download PDF Video Video Features Features

Browse Categories

Non-Captive Lead Screw Linear Actuators

21 products
Close filters
21 products
Non-Captive Lead Screw Linear Actuator 200mm long, 6mm screw diameter with a NEMA 14 Motor, Round Anti-Backlash Nut, 1mm lead, and the screw is 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..
$191.99
Non-Captive Lead Screw Linear Actuator 70mm long, 0.138in screw diameter with a NEMA 08 Motor, 0.024in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 70mm Screw..
$153.23
Non-Captive Lead Screw Linear Actuator 125mm long, 0.138in screw diameter with a NEMA 08 Motor, 0.024in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 125mm Screw..
$160.00
Non-Captive Lead Screw Linear Actuator 70mm long, 1/4in screw diameter with a NEMA 14 Motor, 1/2in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 70mm Screw..
$147.31
Non-Captive Lead Screw Linear Actuator 150mm long, 1/4in screw diameter with a NEMA 14 Motor, 1/2in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor Length: 150mm Screw..
$157.16
Non-Captive Lead Screw Linear Actuator 150mm long, 0.188in screw diameter with a NEMA 11 Motor, 0.025in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 150mm Screw..
$154.70
Non-Captive Lead Screw Linear Actuator 70mm long, 0.188in screw diameter with a NEMA 11 Motor, 0.025in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 70mm Screw..
$144.85
Non-Captive Lead Screw Linear Actuator 400mm long, 3/8in screw diameter with a NEMA 23 Motor, 1/5in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor  Length: 400mm Screw..
$206.40
Non-Captive Lead Screw Linear Actuator 80mm long, 1/4in screw diameter with a NEMA 17 Motor, 1/2in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 80mm Screw..
$135.50
Non-Captive Lead Screw Linear Actuator 100mm long, 3/8in screw diameter with a NEMA 23 Motor, 1/5in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 100mm Screw..
$187.93
Non-Captive Lead Screw Linear Actuator 250mm long, 1/4in screw diameter with a NEMA 17 Motor, 1/2in lead is made using an injected molded, internal nut. Choose a non-captive lead screw actuator when space is limited, as it allows the lead screw to pass completely through the motor. Length: 250mm Screw..
$156.43
Non-Captive Lead Screw Linear Actuator with a NEMA 11 Motor. The Lead Screw has a Round Anti-Backlash Nut with a 3/16 inch diameter, 0.05" lead, and a length of 8 inches, and is made from precision-rolled 300 Series Stainless Steel, coated with PTFE to prevent flaking. The Round Constant Force™..
$208.69
Non-Captive Lead Screw Linear Actuator 8 inches long with a NEMA 11 Motor, Round Anti-Backlash Nut, 3/16 inch screw diameter, 0.5" lead, with the screw 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..
$208.69
Non-Captive Lead Screw Linear Actuator 250mm long with a NEMA 17 Motor, Round Anti-Backlash Nut, 6mm screw diameter, 1mm lead, and the screw is 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..
$179.53
Non-Captive Lead Screw Linear Actuator 200mm long with 2mm lead size, a NEMA 14 Motor, Round Anti-Backlash Nut, 6mm screw diameter, and the screw is 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..
$191.99
Non-Captive Lead Screw Linear Actuator 200mm long with a NEMA 14 Motor, Round Anti-Backlash Nut, 6mm screw diameter, 5mm lead, and the screw is 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..
$191.99
Non-Captive Lead Screw Linear Actuator 250mm long with a NEMA 17 Motor, Round Anti-Backlash Nut, 6mm screw diameter, 2mm lead, and the screw is 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..
$179.53
Non-Captive Lead Screw Linear Actuator 250mm long with a NEMA 17 Motor, Round Anti-Backlash Nut, 6mm screw diameter, 5mm lead, and the screw is 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..
$179.53
Non-Captive Lead Screw Linear Actuator 300mm long with a NEMA 23 Motor, Non-Captive Round Anti-Backlash Nut, 10mm screw diameter, 10mm lead, and the screw is made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking and reduce friction. The Round Constant Force™ Anti-Backlash nut uses a..
$219.09
Non-Captive Lead Screw Linear Actuator 300mm long with a NEMA 23 Motor, Non-Captive Round Anti-Backlash Nut, 10mm screw diameter, 1mm lead, and the screw is made from precision-rolled 300 Series Stainless Steel and coated with PTFE to prevent flaking and reduce friction. The Round Constant Force™ Anti-Backlash nut uses a..
$219.09
21 products

Non-Captive Lead Screw Linear Actuators

21 products

Non-captive lead screw linear actuators are motorized assemblies in which the lead screw passes completely through the motor rather than being axially captured within the motor assembly. In a typical PBC Linear configuration, the screw is supported or fixed at both ends and rotates, while the motor and attached load are forced to travel linearly along the screw. This through-screw design allows the motorized load carriage to move along a fixed screw path, supporting compact layouts, longer travel lengths, and flexible machine integration. In other mounting arrangements, the motor may be held stationary while the screw moves axially through the motor as it rotates. Because non-captive systems do not include an internal guide mechanism, external linear guides are typically used to maintain alignment, increase stiffness, support applied loads, prevent screw deflection, and improve system life. Available in NEMA 08, 11, 14, 17, and 23 frame sizes, these actuators support a wide range of compact motion control applications.

Key Benefits:

  • Through-screw design for compact integration
  • Ideal for space-constrained applications
  • Supports external linear guidance for added rigidity
  • Available in NEMA 08, 11, 14, 17, and 23 frame sizes