Home / Products Centre / Linear Stepper Motor / External T-type Linear Stepper Motor

External T-type Linear Stepper Motor

What Is External T-type Linear Stepper Motor?

A Linear Stepper Motor is a type of electric motor that converts electrical pulses into linear motion. Unlike rotary motors, which produce rotational movement, a linear stepper motor produces direct linear motion along a straight path. The External T-type Lead Screw mechanism is a critical component that allows the motor to achieve high precision and force transmission in linear motion systems.
The T-type lead screw refers to the lead screw with a unique external thread configuration, typically used to convert rotary motion into linear motion. It is called "external" because the threads are located on the outside of the screw shaft, which improves load-bearing capacity and reduces backlash. The combination of a stepper motor and a lead screw system makes the External T-type Lead Screw Linear Stepper Motor an excellent choice for applications requiring high precision, reliability, and repeatability.

Jkongmotor External T-type Linear Stepper Motor

Jkongmotor offers four different lead screw rods, including external T-type lead screw, external ball screw, captive and non captive lead screw, linear motor sizes from neam 8 11 14 17 23 24 34.

Features:

Direct Linear Motion Without Conversion Mechanisms
High-Precision Step Control
Compact and Low-Profile Design
Integrated Linear Guidance and Stability
High Thrust Output
Customizable Stroke Lengths
Robust Structural Design
Easy Mounting and Integration
Closed-Loop Control Compatibility
Energy-Efficient Operation

NEMA 8 External T-type Linear Stepper Motor

NEMA8 (20mm) External T-type Linear Stepper Motor has the characteristics of small size, high performance, long durability, low noise and high efficiency. The base size is 20mm, and the body length is available in 30mm and 38mm.

Optional: Connectors, integrated drivers...

Model

Step Angle

Phase

Shaft Type

Wires

Body Length

Current

Resistance

Inductance

Holding Torque

Leads No.

Rotor Inertia

Weight

(°)

(L) mm

g.cm

No.

g.cm²

JK20HST30-0604

1.8

T-type Screw

Connector

0.6

6.5

1.7

180

0.05

JK20HST38-0604

1.8

T-type Screw

Connector

0.6

220

0.08

NEMA 11 External T-type Linear Stepper Motor

NEMA11 (28mm) External T-type Linear Stepper Motor has the characteristics of small size, high performance, long durability, low noise and high efficiency. The base size is 28mm, and the body length is available in 32mm, 45mm and 51mm.

Optional: Connectors, gearbox, encoder, integrated built-in drivers...

Model	Step Angle	Phase	Shaft Type	Wires	Body Length	Current	Resistance	Inductance	Holding Torque	Leads No.	Rotor Inertia	Weight
Model	(°)	/	/	/	(L)mm	A	Ω	mH	g.cm	No.	g.cm²	Kg
JK28HST32-0674	1.8	2	T-type Screw	Direct Wire	32	0.67	5.6	3.4	600	4	9	0.11
JK28HST45-0674	1.8	2	T-type Screw	Direct Wire	45	0.67	6.8	4.9	950	4	12	0.14
JK28HST51-0674	1.8	2	T-type Screw	Direct Wire	51	0.67	9.2	7.2	1200	4	18	0.2

NEMA 14 External T-type Linear Stepper Motor

NEMA14 (35mm) External T-type Linear Stepper Motor has the characteristics of small size, high performance, long durability, low noise and high efficiency. The base size is 35mm, and the body length is available in 28mm, 34mm and 42mm.

Optional: Connectors, gearbox, encoder, integrated built-in drivers...

Model	Step Angle	Phase	Shaft Type	Wires	Body Length	Current	Resistance	Inductance	Holding Torque	Leads No.	Rotor Inertia	Weight
Model	(°)	/	/	/	(L)mm	A	Ω	mH	g.cm	No.	g.cm²	Kg
JK35HST28-0504	1.8	2	T-type Screw	Direct Wire	28	0.5	20	14	1000	4	11	0.13
JK35HST34-1004	1.8	2	T-type Screw	Direct Wire	34	1	2.7	4.3	1400	4	13	0.17
JK35HST42-1004	1.8	2	T-type Screw	Direct Wire	42	1	3.8	3.5	2000	4	23	0.22

NEMA 17 External T-type Linear Stepper Motor

NEMA17 (42mm) External T-type Linear Stepper Motor has the characteristics of small size, high performance, long durability, low noise and high efficiency. The base size is 42mm, and the body length is available in 34mm, 40mm, 48mm and 60mm.

Optional: Connectors, gearbox, encoder, integrated built-in drivers...

Model	Step Angle	Phase	Shaft Type	Wires	Body Length	Current	Resistance	Inductance	Holding Torque	Leads No.	Rotor Inertia	Weight
Model	(°)	/	/	/	(L)mm	A	Ω	mH	Kg.cm	No.	g.cm²	Kg
JK42HST34-1334	1.8	2	T-type Screw	Direct Wire	34	1.33	2.1	2.5	2.6	4	34	0.22
JK42HST40-1704	1.8	2	T-type Screw	Direct Wire	40	1.7	1.5	2.3	4.2	4	54	0.28
JK42HST48-1684	1.8	2	T-type Screw	Direct Wire	48	1.68	1.65	2.8	5.5	4	68	0.35
JK42HST60-1704	1.8	2	T-type Screw	Direct Wire	60	1.7	3	6.2	7.3	4	102	0.55

NEMA 23 External T-type Linear Stepper Motor

NEMA23 (57mm) External T-type Linear Stepper Motor has the characteristics of small size, high performance, long durability, low noise and high efficiency. The base size is 57mm, and the body length is available in 41mm, 51mm, 56mm, 76mm, 82mm, 100mm, and 112mm.

Optional: Connectors, gearbox, encoder, integrated built-in drivers...

Model	Step Angle	Phase	Shaft Type	Wires	Body Length	Current	Resistance	Inductance	Holding Torque	Leads No.	Rotor Inertia	Weight
Model	(°)	/	/	/	(L)mm	A	Ω	mH	Nm	No.	g.cm²	Kg
JK57HST41-2804	1.8	2	T-type Screw	Direct Wire	41	2.8	0.7	1.4	0.55	4	150	0.47
JK57HST51-2804	1.8	2	T-type Screw	Direct Wire	51	2.8	0.83	2.2	1.0	4	230	0.59
JK57HST56-2804	1.8	2	T-type Screw	Direct Wire	56	2.8	0.9	3	1.2	4	280	0.68
JK57HST76-2804	1.8	2	T-type Screw	Direct Wire	76	2.8	1.1	3.6	1.89	4	440	1.1
JK57HST82-3004	1.8	2	T-type Screw	Direct Wire	82	3.0	1.2	4.0	2.1	4	600	1.2
JK57HST100-3004	1.8	2	T-type Screw	Direct Wire	100	3.0	0.75	3.0	2.8	4	700	1.3
JK57HST112-3004	1.8	2	T-type Screw	Direct Wire	112	3.0	1.6	7.5	3.0	4	800	1.4

Components of an External T-Type Lead Screw Linear Stepper Motor

Step Motor: The primary component that provides precise, step-by-step movement for accurate linear motion.

T-Type Lead Screw: A specialized screw featuring external threads, designed for high load capacity and minimal backlash.

Nut: A component that travels along the lead screw, converting the rotary motion of the motor into linear movement.

Housing: A structural frame that secures the motor and lead screw, ensuring proper alignment.

Bearings: Elements that reduce friction and facilitate smooth movement along the lead screw.

How an External T-Type Lead Screw Linear Stepper Motor Works

The external T-type lead screw works in conjunction with the stepper motor to provide linear motion. The motor rotates in precise increments, typically between 0.9 and 1.8 degrees per step. These finely controlled movements allow for exceptional precision.

When the motor rotates, the threads of the lead screw engage with the nut, driving it along the length of the screw. The external threading provides enhanced strength and resistance to deformation, making this system suitable for high-load applications. The careful design minimizes backlash, ensuring that the nut travels smoothly and consistently along the lead screw, thus delivering both accuracy and efficiency.

Benefits of Using an External T-Type Lead Screw Linear Stepper Motor

Precision and Accuracy

The high precision of the External T-Type Lead Screw Linear Stepper Motor allows for very accurate positioning, making it ideal for applications that require exact movements, such as CNC machines, 3D printers, and robotics.

Reduced Backlash

The design of the External T-Type Lead Screw minimizes backlash, a common issue where slight movement occurs when changing direction. The secure engagement of the external threads with the nut reduces play and enhances overall system efficiency.

High Load Capacity

The design of the T-type lead screw allows it to handle significantly heavier loads compared to traditional lead screws. This capability makes it suitable for applications that involve moving heavy equipment reliably, such as in industrial machinery and automated systems.

Smooth Motion

The combination of the stepper motor and lead screw ensures smooth and continuous motion, critical for applications that demand high-quality operation, such as medical devices and precision manufacturing tools.

Cost-Effectiveness and Low Maintenance

Compared to other linear actuators, the External T-Type Lead Screw Linear Stepper Motor is a cost-effective solution. Its straightforward design requires less frequent maintenance, making it a durable option for long-term use.

The External T-Type Lead Screw Linear Stepper Motor merges precision, strength, and reliability into a powerful system. With applications ranging from CNC machines and 3D printers to robotics and medical devices, this technology outperforms traditional linear actuators by delivering smooth, precise, and consistent motion, making it indispensable in industries that require high-quality movement systems.

Applications of External T-type Lead Screw Linear Stepper Motors

The External T-type Lead Screw Linear Stepper Motor is used across a wide range of industries and applications. Its ability to provide precise and reliable linear motion has made it a preferred choice in various sectors. Here are some notable applications:

1. CNC Machines

In the world of computer numerical control (CNC), precision is paramount. The External T-type Lead Screw Linear Stepper Motor allows CNC machines to achieve highly accurate movements, enabling them to carve and shape materials with extreme precision. The reduction of backlash and smooth motion is especially crucial in these high-precision environments.

2. 3D Printing

3D printers rely heavily on precise linear motion to build objects layer by layer. The External T-type Lead Screw Linear Stepper Motor is widely used in 3D printers to ensure that the printing head moves with exact positioning, ensuring the accuracy of each printed layer and overall object quality.

3. Robotics

In robotics, precise and controlled movement is essential for proper functionality. Whether it’s for robotic arms, servo systems, or automated assembly lines, these stepper motors allow for smooth and accurate positioning, which is critical for robotic applications that require consistent performance over extended periods.

4. Automated Linear Actuators

Linear actuators, which convert rotational motion into linear motion, often rely on lead screw systems for efficiency and durability. The External T-type Lead Screw provides the necessary strength and precision to carry out tasks such as opening and closing doors, adjusting platforms, or positioning mechanical parts in automated machinery.

5. Medical Devices

In medical applications, precision is critical for safety and accuracy. External T-type Lead Screw Linear Stepper Motors are used in medical devices like surgical robots, diagnostic equipment, and more, where highly controlled and exact linear movement is required for optimal performance.