The NEMA14 captive stepper motor you mentioned is designed with a lead screw and has a holding torque of 0.2kg. The motor's dimensions are specified as 35x35x34mm, and the lead screw has a TR8*4 specification. Here's a breakdown of the information:

Motor Type: 2-phase stepper motor
Holding Torque: 0.2kg (kilograms)
Dimensions: 35x35x34mm (width x depth x height)
Lead Screw: TR8*4

The holding torque of 0.2kg indicates the maximum torque the motor can generate to prevent rotation or hold a load in place, typically measured in N.m (Newton-meters) or kg.cm (kilogram-centimeters).

The dimensions of the motor are specified as 35x35x34mm, which indicates its physical size with width, depth, and height measurements.

The lead screw specification TR8*4 refers to the thread type and pitch of the lead screw. TR8 indicates a trapezoidal thread profile with an 8mm major diameter, and the "*4" suggests a pitch of 4mm. This means the lead screw advances by 4mm for each complete revolution.

This type of stepper motor with a captive lead screw is commonly used in medical equipment, such as medical pumps, precise positioning systems, or other applications where controlled linear motion is required.

Features:

Bipolar or unipolar versions available
Hybrid stepper construction
Available in single or double shaft versions
CE and RoHS approved
Customizations on request

Dimensions

Motor Specifications

Step Angel	1.8 °
Fram Size	35mm
Number of Phase	2 Phase
Rated Current	0.4Amp
Holding Torque	200mN.m
Resistance	200ohm
Inductance	20mH
Rotor Inertia	14g-cm²
Motor weight	0.2kg
Lead Screw	Tr8X8
Connection	Bipolar

Operating Specifications

Step Angle: 1.8°

Maximum Temperature :80°C maximum

Ambient Temperature: -20 °C to 50°C

Storage Temperature -20: °C to 100°C

Humidity Range (%) :85% or less, non-condensing

Magnet Wire Insulation :Class B 130 deg C

Insulation Resistance :100M Ohm at 500 VDC

Dielectric Strength :500 VDC for 1 min

Shaft Radial Play:0.02Max. (450g-load)

Shaft Axial Play:0.08Max. (450g-load)

Max. radial force:28N (20mm from the flange)

Max. axial force):10N

Torque Curves

Submodels

Model	Holding Torque	Step Angle	Motor Length	Type of Shaft	Rated Current
42SHD4950	0.13N.m	1.8°	20mm	D Shaft-20mm	1.0A
42SHD4003	0.26N.m	1.8°	34mm	D Shaft-20mm	0.4A
42SHD0261	0.45N.m	1.8°	40mm	D Shaft-20mm	1.68A
42SHD4425	0.59N.m	1.8°	48mm	D Shaft-24mm	2.0A
42SHD4813	0.8N.m	1.8°	60mm	D Shaft-24mm	2.1A

Body Length	Diameter of Screw	Pitch	Length of Screw
20 mm 34 mm 40 mm 48 mm 60 mm	5	2	20-1000 mm
		8
	6.35	1.27
		3.175
		6.35
	6.5	3
		6.35
	8	1
		2
		4
		8
		12

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If our standard motor cannot meet your needs,

we can customize the motor according to your needs

Customized content includes but is not limited to special shafts, winding parameters, installation dimensions, lead wires with special requirements, connectors, etc.

Options:
Encoder | Brake | Gearbox | Shaft

Please click the "Get a quote" button below to tell us your requirements.

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