Captive Lead Screw Linear Actuators
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Captive lead screw linear actuators are motorized assemblies that convert rotary motion into linear motion by fixing the lead screw in place while the nut moves along it. The motor is integrated into one end of the actuator and directly drives the screw, causing the nut to translate linearly to push or pull the load. This configuration creates a compact, mechanically stable system that simplifies integration into machines. To ensure long-term accuracy and durability, each unit incorporates angular contact bearings directly within the motor housing, increasing thrust capacity, reducing deflection, and controlling runout. Factory preloaded bearings eliminate axial clearance to maintain consistent positioning accuracy and minimize backlash over time. Available in five NEMA frame sizes—08, 11, 14, 17, and 23—these actuators support a wide range of performance upgrades in the form of motion control applications like Smart Motor Technology which can provide up to 50% higher output torque for faster cycle times and improved 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
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