Non Captive NEMA 34 86x86mm Lead Screw Stepper Motor 2 Phase 1.8 Degree 3 A/Phase Nema 34 Non-Captive Lead Screw Linear Actuator

Product Description

The HOLRY' brand of hybrid Stepper Motor Linear Actuators come in five sizes, from 28 mm square to 86 mm square, corresponding to Nema size 11, size 14, size 17, size 23, and size 34. Each size has three to three form factors available - captive, non-captive and an external linear version.

There are over twenty different travels per step available, from. 0001563 inch (.00397 mm) to .003937 inch (1 mm). Microstepping can be used for even finer resolution.

A non-captive lead screw linear actuator is a type of linear actuator that converts rotary motion into linear motion using a lead screw. It is called non-captive because the lead screw is not attached to the motor shaft and can rotate freely, allowing for manual adjustment of the position of the actuator.

NEMA 34 non-captive lead screw linear actuator is a type of linear actuator that is designed to convert rotational motion into linear motion. The actuator consists of a NEMA 34 stepper motor, a lead screw, and a linear slide.

The NEMA 34 stepper motor is a type of high-torque, low-speed motor that is commonly used in industrial applications. The motor is mounted to the linear slide and is connected to the lead screw through a coupling.

The lead screw is a threaded rod that is designed to translate the rotational motion of the motor into linear motion. The lead screw is typically made of steel or brass and is threaded with a high-pitch thread to maximize the linear travel of the actuator.

The linear slide is a guide rail that supports and guides the linear motion of the actuator. The slide is typically made of aluminum or steel and is designed to provide smooth and precise linear motion.

The term "non-captive" refers to the fact that the lead screw is not physically connected to the motor shaft. This means that the actuator can move freely along the linear slide without rotating the motor.

Features / Benefits

Easy integration

Much easier to integrate into an application; can be coupled with programmable controllers/drivers.

More precision

Provide higher level of precision in motion control (speed, torque and force can be modified at different stages during movement).

Safer

Actuators are not susceptible to leakages or contamination - safer, cleaner and more convenient.

Lower cost

More economical in the long run, require less maintenance, are rugged and easy to operate / install, last longer and can be reliably used in different environmental conditions.

Other benefits

With simple quick connect wires and cable, actuators can be easily assembled, are more compact, and operate quietly.

Configurations

Kindly check our stepper motor catalog for full specifications.

Holry Stepper Motor Catalogue.pdf

The key differences between an external linear, non-captive, and captive motor is,

External	Non-captive	Captive
The external linear motor has the screw affixed to the rotor, so it rotates external to motor body, like a DC motor.	The non captive screw travels freely in and out of the motor body and does not rotate.	The captive has a short screw that is held mostly inside the motor body, coupled to a spline.
External linear motors are most akin to motorized rails where the nut is replaced by a driven carriage assembly. Non captive is generally the shortest overall length assembly, while the captive is the longest.

End Machine Options	Screw Nut Options
Please contact HOLRY for custom solutions.

Drawing of Non Captive NEMA 34 Lead Screw Stepper Motor

FAQ

• What is stepper motor and how it works?

  The stepper motor is an electromagnetic device that converts digital pulses into mechanical shaft rotation. Advantages of step motors are low cost, high reliability, high torque at low speeds and a simple, rugged construction that operates in almost any environment.

• What is difference between DC and stepper motor?

  Some DC motors also generate high torques at low speeds, but are more suited towards continuous uses, as their torque is constant over their speed range. The main difference is that, while stepper motors can push harder from rest, DC motors tend to have more sustained output.

• How are stepper motors controlled?

• Why is it called stepper motor?

  Stepper motors are so named because each pulse of electricity turns the motor one step. Stepper motors are controlled by a driver, which sends the pulses into the motor causing it to turn.

• What is step angle?

  Step angle is defined as the angle through which the stepper motor shaft rotates for each command pulse.

• What is stepper motor torque?

  If external force is applied to a stepping motor when it is stopped but energized, the attractive force generated between the rotor and stator works to maintain the stop position of the motor. This torque of withstanding the external force is called the holding torque.