STM42

STM42-M Integrated Leadscrew Stepper Motor

Integrated lead screw stepper servo motor with 42mm flange, CANopen/RS485, 2500-line encoder, thrust up to 600N.

Features

"Integrated lead screw
CANopen/RS485
FOC and SVPWM technology
Analog input (0-10V)
Multiple thread leads"

Models & Specifications

Specs as rows · Models as columns

Specifications	STM4234B-M (Lead 1.270mm)	STM4234B-M (Lead 2.540mm)	STM4234B-M (Lead 3.175mm)	STM4234B-M (Lead 12.70mm)	STM4234B-M (Lead 25.40mm)	STM4248B-M (Lead 1.270mm)	STM4248B-M (Lead 2.540mm)	STM4248B-M (Lead 6.350mm)	STM4248B-M (Lead 12.70mm)	STM4248B-M (Lead 25.40mm)	STM4234B-M (Lead 6.350mm)
Flange Size	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm
Encoder typ	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder	2500-line single-turn absolute magnetic encoder
Communication Method	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485	CANopen,RS485
Thrust	300 N·m	210 N·m	180 N·m	50 N·m	40 N·m	450 N·m	300 N·m	155 N·m	70 N·m	55 N·m	100 N·m
Load	150 N	140 N	112 N	28 N	15 N	320 N	210 N	109 N	54 N	29 N	70 N
Screw Lead	1.270mm	2.540mm	3.175mm	12.70mm	25.40mm	1.270mm	2.540mm	6.350mm	12.70mm	25.40mm	6.350mm
Step Length	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm	[email protected]°mm
Self-locking Force	150 N	100 N	40 N	3 N	0 N	150 N	100 N	15 N	3 N	0 N	15 N
Holding Torque	0.25 N·m	0.25 N·m	0.25 N·m	0.25 N·m	0.25 N·m	0.48 N·m	0.48 N·m	0.48 N·m	0.48 N·m	0.48 N·m	0.25 N·m
Body Length	62.5 mm	62.5 mm	62.5 mm	62.5 mm	62.5 mm	66.5 mm	66.5 mm	66.5 mm	66.5 mm	66.5 mm	62.5 mm

* Scroll horizontally within the table area when the content is wide.

Specifications

Shaft Diameter	-
Voltage Range	12-36 VDC
Encoder	2500-line single-turn absolute magnetic encoder
NiMotion Mode	Position mode: Pulse control, multi-segment position control, digital input control Speed mode: Analog speed control, digital input control Torque mode: Digital input control
CIA402 Mode	CiA402 (PP, VM, PV, PT, HM, IP, CSP, CSV, CST); NiMotion modes
Drive Mode	Utilizes FOC (Field-Oriented Control) technology and SVPWM
DI (Digital Input)	"Quantity: 3 units; PWM frequency ≤ 200kHz; supports dual-level input of 5V–30V; logic 1 signal: 5V or 24V; logic 0 signal: 0–2V; configurable functions: 1. enable; 2. positive/negative limit; 3. home switch; 4. alarm reset; 5. pause; 6. multi-segment operation command switching."
DO (Digital Output)	Quantity: 2 units, 100mA@30V, e functions: 1. Motor run/stop; 2. Target reached; 3. Alarm output.
AI (Analog Input)	Quantity: 1; Input method: single-ended input; Signal type: voltage signal; Resolution: 12-bit; Voltage: 0~10V; Accuracy: reference error ≤1%; Configurable functions: dead zone, filtering, offset, scaling, direction.
Operating Temperature	0°C to 40°C
Operating Altitude	<1000m
Fault Alarm	Overvoltage, undervoltage, overtemperature, locked rotor
Servo Function	Soft limit, gain switching, S-curve planning, vibration suppression, parameter identification, online upgrade

Downloads

Name	Type	Size	Update Date
NiMotion Integrated Lead-Screw-Motor Selection Guide	Selection Guide	2.3MB	2026-08-25
stm42xxb-m-1zbg-integrated-lead-screw-stepper-servo-motor	Drawing	160.6KB	2026-07-28
Communication Manual – pmm60l/blm/stm-modbus	Communication Manual	4.0MB	2026-08-27
Motor Tuning Software – General Purpose	Software	84.5MB	2026-08-27
Communication Manual – pmm60l/blm/stm-CANopen	Communication Manual	3.8MB	2026-08-27

Companion Products

Power CableSTX001 Power Cable

Power cable for NiMotion integrated motors.

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Communication CableSTX002A/B Communication Cable

Communication cable for NiMotion integrated motors.

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Communication ConverterSCM-USBCANI-L

USB to CAN converter with isolation, IP65 protection, and secondary development SDK support.

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Communication ConverterSCM-USB485A-L

USB to RS485 converter with active termination, isolation, IP65 protection, and secondary development SDK support.

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I/O CableSTX003 IO Cable

IO cable for NiMotion integrated motors.

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Communication CableVDCX010P Communication Cable

Communication cable for NiMotion integrated motors.

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Communication CableSDCX001-KZ-B Communication Cable

Communication cable for NiMotion integrated motors.

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Other AccessoriesM8 Terminal Resistor

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Applications

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Application of integrated servo motor in extracorporeal vibrating lithotripsy bed

With the continuous advancement of medical technology, the extracorporeal vibrating lithotripsy bed, as a non-invasive stone treatment device, has been widely used in the medical field. The integrated servo motor, as the core driving component of the extracorporeal vibrating lithotripsy bed, provides safer and more reliable technical support for the treatment of stone patients with its high efficiency, stability and precision.

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Application of integrated servo motor in venous center robotic arm

With the continuous advancement of medical technology, robot-assisted surgery has become an important development direction in the field of modern medicine. Among them, the venous center robot arm, as a key component of the surgical robot, plays a vital role in the accuracy, stability and safety of the operation. As one of the core components of the robot arm, the integrated servo motor is also gaining more and more attention in the application of the venous center robot arm.

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Application of integrated servo motor in AGV

Automation technology has leapt forward, and the popularity of automatic guided vehicles (AGVs) in logistics, warehousing and production has accelerated. As a key equipment in intelligent logistics, AGVs use electrical control, sensing and navigation technologies to achieve automatic handling and precise positioning of goods. The integrated servo motor, as its power heart, is crucial to the performance of AGVs.

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Application of integrated servo motor in tension system equipment

With the rapid development of industrial automation, the demand for high-precision and high-efficiency transmission and control equipment is growing. As an intelligent motor integrating drive, control and feedback, the integrated servo motor has been widely used in various industrial equipment due to its excellent performance. Especially in tensile test equipment, the integrated servo motor plays a vital role.

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Application cases of integrated stepper servo motors in fluid equipment in the spraying industry

The application of integrated stepper servo motors has achieved precision and efficiency in the spraying process. The combination of CANopen communication and intelligent control algorithms has solved the pain points of traditional spraying equipment, such as large flow fluctuations and delayed response, and significantly improved coating quality and production efficiency.

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Application of integrated stepping servo motor in microscope stage

Microscopes are indispensable tools in scientific research and medical diagnosis, and their accuracy and stability are crucial to the observation results. The stage, as an important part of the microscope, carries the sample to be observed, and its movement accuracy and response speed directly affect the observation effect.

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Application and optimization of integrated servo motors in appearance inspection equipment

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Application of integrated servo motor in intelligent (automatic) charging equipment

With the widespread promotion and popularization of new energy vehicles, the demand for charging equipment is also growing. In order to improve the efficiency and performance of charging equipment, integrated servo motor technology is widely used in new energy vehicle charging equipment. Integrated servo motor technology combines the functions of motor, controller, sensor, etc., with the advantages of high efficiency, precision and intelligence, bringing revolutionary changes to the charging equ

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