Ball Screw Linear Actuator with NEMA Motor

Ball Screw Linear Actuators

Ball screw linear actuators combine a ball screw, ball nut, and motor to convert motor rotation into controlled linear motion. PBC Linear BS Series miniature ball screw actuator assemblies use an external-nut design in which the motor rotates the exposed ball screw while the restrained cylindrical or flanged nut travels axially along it. The pre-assembled units are available in NEMA 08, 11, 14, 17, and 23 frame sizes with six standard screw-diameter-and-lead combinations: 6mm × 1mm, 6mm × 2mm, 8mm × 1mm, 8mm × 2mm, 8mm × 2.5mm, and 10mm × 2mm. Standard configurations are supplied without preload, while preload is available to reduce play and increase rigidity and positional accuracy. Polymer wipers at both ends of the nut help block debris and retain lubrication around the recirculating balls. Standard and custom journal machining is available for one or both screw ends; a journal is the machined end section that fits a bearing, coupling, motor connection, or support block. Fixed and floating end blocks are also available to support the screw while allowing for alignment and thermal expansion. For applications requiring more configuration choices, the BE Series offers the same five NEMA frame sizes and 6mm–10mm screw-diameter range with additional motor lengths, lead options, nut styles, and performance combinations.

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77 products
Miniature linear ball screw actuator with a screw diameter of 8mm, a lead of 2.5mm and a length of 250mm. Includes a NEMA 17 single stack motor and a flanged nut, it’s tailored for applications where space is at a premium but precision cannot be compromised. The assembly is delivered..
$293.98
Integrated Step-Servo Ball Screw Actuator with a 105mm screw, 8mm screw diameter with a NEMA 17 Motor, 2mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$995.43
Integrated Step-Servo Ball Screw Actuator with a 155mm screw, 10mm screw diameter with a NEMA 23 Motor, 2mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$1,042.59
Integrated Step-Servo Ball Screw Actuator with a 105mm screw, 6mm screw diameter with a NEMA 11 Motor, 2mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$803.08
Integrated Step-Servo Ball Screw Actuator with a 55mm screw, 6mm screw diameter with a NEMA 11 Motor, 2mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$790.90
Integrated Step-Servo Ball Screw Actuator with a 105mm screw, 6mm screw diameter with a NEMA 11 Motor, 1mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$776.64
Integrated Step-Servo Ball Screw Actuator with a 55mm screw, 4mm screw diameter with a NEMA 08 Motor, 1mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$938.37
Integrated Step-Servo Ball Screw Actuator with a 55mm screw, 6mm screw diameter with a NEMA 11 Motor, 1mm lead is made using an external ball nut (A1P). The drive and motion controller are built into the motor, so the actuator needs only DC power and a pulse or RS-485 command..
$765.23
Ball screw linear actuator, 125mm long, with an 8mm screw diameter, 2mm lead, external AK1 ball nut, and a NEMA 17 stepper motor with a 48.3 mm maximum motor body length. The ball screw drive converts motor rotation into precise linear motion with high efficiency, thrust, and repeatability. Its fine..
$451.77
Ball screw driven linear actuator with 100mm length, 10mm screw diameter, 2mm lead, external AK1 ball nut, NEMA 23 stepper motor, and a maximum motor body length of 57mm. The fine 2mm lead provides greater mechanical advantage for higher thrust and precise positioning, while the recirculating ball nut design supports..
$434.05
Ball screw driven linear actuator with a 125mm length, 10mm screw diameter, 10mm lead, external BM1 ball nut, NEMA 23 stepper motor, and a maximum motor body length of 57mm. The 10mm lead provides faster linear travel per motor revolution, while the recirculating ball nut design supports high efficiency, precise..
$557.13
Ball screw driven linear actuator with a 75mm length, 8mm screw diameter, 1mm lead, external AK1 ball nut, NEMA 14 stepper motor, and a maximum motor body length of 36mm. The fine 1mm lead provides greater mechanical advantage for higher thrust and very precise positioning, while the recirculating ball nut..
$383.61
Ball screw driven linear actuator with a 125mm length, 8mm screw diameter, 5mm lead, external BU1 ball nut, NEMA 14 stepper motor, and a maximum motor body length of 36mm. The 5mm lead provides a balance of linear speed, thrust, and positioning control, while the recirculating ball nut design supports..
$506.67
Ball screw driven linear actuator with a 125mm length, 8mm screw diameter, 2mm lead, external AK1 ball nut, NEMA 17 stepper motor, and a maximum motor body length of 39.8mm. The fine 2mm lead provides greater mechanical advantage for higher thrust and precise positioning, while the recirculating ball nut design..
$446.35
Ball screw driven linear actuator with a 50mm length, 6mm screw diameter, 1mm lead, external AK1 ball nut, NEMA 11 stepper motor, and a maximum motor body length of 32mm. The fine 1mm lead provides greater mechanical advantage for higher thrust and very precise positioning, while the recirculating ball nut..
$350.41
Ball screw driven linear actuator with a 100mm length, 6mm screw diameter, 2mm lead, external AK1 ball nut, NEMA 11 stepper motor, and a maximum motor body length of 32mm. The fine 2mm lead provides greater mechanical advantage for higher thrust and precise positioning, while the recirculating ball nut design..
$415.36
Miniature Ball Screw Linear Actuator with a Cylindrical Nut and a NEMA 11 Motor Part Number BSR0601AXRU-0250-CSN-111-NNN-N Diameter 6mm Lead 1mm Accuracy X Screw Length 250mm Nut Type Cylindrical Nut Backlash Standard Backlash Of 0.05mm Left End NEMA 11 Motor (23mm) Right End Encoder
$297.22
Ball Screw Linear Actuator with a screw diameter of 6mm, a lead of 1mm and a length of 250mm. The assembly, integrating a flanged nut, is specifically tailored for ease of use and rapid integration in systems using NEMA 8 motors. It's the ideal solution for projects demanding high precision..
$352.53
Ball Screw Linear Actuator with a screw diameter of 6mm, a lead of 1mm and a length of 150mm. This is designed to enhance the efficiency of compact applications. Featuring a flanged nut, this actuator simplifies installation and removal processes within assembly lines. Compatible with NEMA 8 motors, it's ideal..
$340.76
Flanged Nut Miniature Ball Screw Linear Actuator with a NEMA 11 motor, a screw diameter of 6mm, a lead of 1mm and a length of 150mm. Optimize your compact applications with this high-performance linear motion actuator from our miniature metric ball screw motor series. The flanged nut and motor simplifies..
$323.63
77 products

Ball Screw Linear Actuators

77 products

Ball screw linear actuators combine a ball screw, ball nut, and motor to convert motor rotation into controlled linear motion. PBC Linear BS Series miniature ball screw actuator assemblies use an external-nut design in which the motor rotates the exposed ball screw while the restrained cylindrical or flanged nut travels axially along it. The pre-assembled units are available in NEMA 08, 11, 14, 17, and 23 frame sizes with six standard screw-diameter-and-lead combinations: 6mm × 1mm, 6mm × 2mm, 8mm × 1mm, 8mm × 2mm, 8mm × 2.5mm, and 10mm × 2mm.

Standard configurations are supplied without preload, while preload is available to reduce play and increase rigidity and positional accuracy. Polymer wipers at both ends of the nut help block debris and retain lubrication around the recirculating balls. Standard and custom journal machining is available for one or both screw ends; a journal is the machined end section that fits a bearing, coupling, motor connection, or support block. Fixed and floating end blocks are also available to support the screw while allowing for alignment and thermal expansion. For applications requiring more configuration choices, the BE Series offers the same five NEMA frame sizes and 6mm–10mm screw-diameter range with additional motor lengths, lead options, nut styles, and performance combinations.

  • Five frame sizes: NEMA 08/11/14/17/23 and screw diamaters of 6,8,10mm
  • Flanged and cylindrical nut configurations
  • Preload option for higher rigidity and better positional accuracy
  • Polymer wipers located at each end of the nut help prevent the ingress of debris and particulates
  • Standard and special machined journals available (fixed or floating)
  • Fixed and floating end blocks available

Features & Specifications of Ball Screw Linear Actuator Motor Assemblies

Frequently Asked Questions

What is a motorized ball screw actuator?
A motorized ball screw actuator is a linear motion device that integrates a motor, ball screw, and nut into a single assembly to convert rotary motion into precise linear movement.
What are miniature ball screw actuators used for?
Miniature ball screw actuators are used in applications that require compact size, high precision, and efficient linear motion, including medical devices, automation systems, semiconductor equipment, and robotics.
What are the advantages of ball screw actuators?
Ball screw actuators provide high efficiency, low friction, precise positioning, and long service life compared to other linear motion solutions.
What is the difference between a ball screw and a lead screw?
Ball screws use recirculating ball bearings to reduce friction and improve efficiency, while lead screws rely on sliding contact, resulting in higher friction and lower efficiency.
What does preload mean in a ball screw actuator?
Preload is the internal tension applied to a ball screw assembly to eliminate backlash, increase stiffness, and improve positioning accuracy.
How do you choose a ball screw actuator?
Choosing a ball screw actuator involves evaluating force, speed, stroke length, positioning accuracy, available space, and whether a standard or customizable configuration is required.
What is a NEMA stepper motor?
A NEMA stepper motor is a standardized motor defined by its mounting dimensions, commonly used in motion control systems for precise and repeatable positioning.
What are fixed and floating bearing configurations?
A fixed bearing supports axial and radial loads and locates the screw, while a floating bearing allows for thermal expansion and prevents binding.
What is the benefit of integrated linear actuators?
Integrated linear actuators reduce assembly time, improve alignment, save space, and simplify system design by combining motor and mechanical components into one unit.
When should you choose a customizable actuator instead of a standard one?
A customizable actuator is best when specific force, speed, resolution, or mounting requirements cannot be met by standard, ready-to-ship configurations.