Captive Lead Screw Linear Actuator Assemblies

Captive lead screw linear actuators provide a fully integrated linear motion solution designed for controlled, guided travel in precision-driven applications. In a captive configuration, the lead screw remains fixed within the actuator while the nut translates linearly, creating a compact and mechanically stable motion system that simplifies design and installation.

To ensure long-term accuracy and durability, each unit incorporates angular contact bearings directly within the motor housing. This optimized support structure increases thrust capability, reduces deflection, and controls runout. Factory preloaded bearings remove axial clearance, maintaining consistent positioning accuracy and eliminating backlash that can degrade motion performance over time.

For higher performance applications, optional Smart Motor Technology boosts output torque by up to 50%, enabling faster cycle times and improved machine productivity without increasing footprint.

Key Features:

• Five frame sizes: NEMA 08, 11, 14, 17, and 23
• Multiple lead screw and nut combinations available per frame size
• Available with standard and anti-backlash nuts
• Three nut styles offer design flexibility: round, square and triangular
• Larger bearing design increases thrust capacity and service life
• Preloaded bearings eliminate axial play for improved positioning accuracy
• Optional Smart Motor Technology for up to 50% more torque