STM42

STM42-M Integrated Stepper Servo Motor

42mm flange integrated stepper servo motor – delivering closed-loop servo control algorithms within a compact footprint. Offers significantly improved positioning accuracy, low heat generation, and excellent speed stability. Ideal for a wide range of compact automation equipment.

Features

CANopen/RS485
Built-in absolute magnetic encoder
Optional brake models available

Pulse RS485 CANopen 42mm

Models & Specifications

Specs as rows · Models as columns

Specifications	STM4234B-485-M-0FS	STM4234B-CANopen-M-0FS	STM4240B-485-M-0FS	STM4240B-CANopen-M-0FS	STM4248B-485-M-0FS	STM4248B-CANopen-M-0FS	STM4260B-485-M-0FS	STM4260B-CANopen-M-0FS	STM4234B-485-M-0FSB	STM4234B-CANopen-M-0FSB	STM4240B-485-M-0FSB	STM4240B-CANopen-M-0FSB	STM4248B-485-M-0FSB	STM4248B-CANopen-M-0FSB	STM4260B-485-M-0FSB	STM4260B-CANopen-M-0FSB
Flange Size	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm	42mm
Holding Torque	0.28 N·m	0.28 N·m	0.4 N·m	0.4 N·m	0.5 N·m	0.5 N·m	0.7 N·m	0.7 N·m	0.28 N·m	0.28 N·m	0.4 N·m	0.4 N·m	0.5 N·m	0.5 N·m	0.7 N·m	0.7 N·m
Brake	No Brake	No Brake	No Brake	No Brake	No Brake	No Brake	No Brake	No Brake	Built-in Brake w/ Logic	Built-in Brake w/ Logic	Built-in Brake w/ Logic	Built-in Brake w/ Logic	Built-in Brake w/ Logic	Built-in Brake w/ Logic	Built-in Brake w/ Logic	Built-in Brake w/ Logic
Encoder type	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	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
Rated Voltage	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC	24 VDC
Voltage Range	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC	12-36VDC
Rated Current	1.3 A	1.3 A	1.7 A	1.7 A	1.7 A	1.7 A	2.0 A	2.0 A	1.3 A	1.3 A	1.7 A	1.7 A	1.7 A	1.7 A	2.0 A	2.0 A
Body Length	52.5 mm	52.5 mm	58.5 mm	58.5 mm	66.5 mm	66.5 mm	78.5 mm	78.5 mm	84.5 mm	84.5 mm	90.5 mm	90.5 mm	98.5 mm	98.5 mm	109.5 mm	109.5 mm
Weight	0.27 kg	0.27 kg	0.33 kg	0.33 kg	0.41 kg	0.41 kg	0.52 kg	0.52 kg	0.46 kg	0.46 kg	0.52 kg	0.52 kg	0.60 kg	0.60 kg	0.71 kg	0.71 kg
Inertia	-	-	5.4×10^-6 kg·m²	5.4×10^-6 kg·m²	6.8×10^-6 kg·m²	6.8×10^-6 kg·m²	8×10^-6 kg·m²	8×10^-6 kg·m²	3.4×10^-6 kg·m²	3.4×10^-6 kg·m²	5.4×10^-6 kg·m²	5.4×10^-6 kg·m²	6.8×10^-6 kg·m²	6.8×10^-6 kg·m²	8×10^-6 kg·m²	8×10^-6 kg·m²

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Specifications

Shaft Diameter	Φ5
Number Of Phases	2
Step Angle	1.8°
Encoder	2500-line single-turn absolute magnetic encoder
Control Modes	CiA402 Mode,Manufacturer Mode
External Control Interface	DI – Non-isolated NPN Input,DI – Non-isolated PNP Input,DI – Non-isolated Switch Input,DI – Isolated Opto Single-Ended Input,DI – Isolated Opto Differential Input,DO – Isolated Open-Drain Output,DO – Non-isolated MOSFET Output,AI – 0–10V Analog Input,AI – ±10V Analog Input
CiA402 Mode	PP, VM, PV, PT, HM, IP, CSP, CSV, CST
DI (Digital Input)	Quantity: 3, Logic 1 signal: 5V or 24V, Logic 0 signal: 0-2V ;with a maximum PWM pulse frequency of 2MHz. Configurable functions: 1. Enable 2. Positive and negative limits 3. Origin switch 4. Alarm reset 5. Pause 6. Switch between multiple operation instructions
DO (Digital Output)	Quantity: 2 units, MOS open-drain output, maximum load current 100mA, maximum voltage 30V. Configurable 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, overheat, locked rotor
Servo Function	Soft limit, gain switching, S-curve planning, vibration suppression, parameter identification, online upgrade

Product Details

Application in AGV Equipment

This integrated stepper servo motor series is applicable to AGV drive wheels, steering actuators, lifting platforms, and fork positioning mechanisms. Its compact integrated design saves vehicle space, leaving more room for batteries and cargo. Built-in encoder enables full closed-loop control, adapting to floor irregularities and load variations. Multiple communication protocols are supported for compatibility with various navigation systems.

Downloads

Name	Type	Size	Update Date
NiMotion Integrated Motor Selection Guide	Selection Guide	12.8MB	2026-08-25
stm42m-series-canopen-rs485-User Manual	User Manual	2.6MB	2026-08-17
Communication Manual – pmm60l/blm/stm-modbus	Communication Manual	4.0MB	2026-08-27
Communication Manual – pmm60l/blm/stm-CANopen	Communication Manual	3.8MB	2026-08-27
stm42xx-m-0fsb-integrated-stepper-motor-anti-collision-structure	Drawing	332.0KB	2026-07-28
stm42xxx-m-0fsb-integrated-stepper-motor-c02-non-anti-collision	Drawing	330.7KB	2026-07-28
stm42xxx-m-0fs-integrated-stepper-motor-b01-non-anti-collision	Drawing	322.0KB	2026-07-28
stm42xxx-m-0fs-integrated-stepper-motor-b01-anti-collision-structure	Drawing	322.0KB	2026-07-28
stm42xxb-m-1zb-integrated-lead-screw-stepper-servo-motor	Drawing	154.4KB	2026-07-28

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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I/O CableSTX003 IO Cable

IO 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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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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Applications

Discover how this product is applied across various industrial automation scenarios.

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Application of integrated servo motor in pendulum wheel sorting machine

With the rapid development of logistics and manufacturing industries, sorting machines are being used more and more widely. As a common sorting equipment, the pendulum wheel sorter is highly efficient, accurate, and flexible, and is widely used in various logistics sorting scenarios. The application of integrated servo motors in the pendulum wheel sorter provides new possibilities for performance improvement and optimization of the sorter.

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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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integrated electric gripper in medical tube grasping

Application of Integrated Electric Clamp in Medical Catheter Grabbing

With the continuous development of science and technology, the application of electric gripper in the medical field is gradually increasing, one of the important applications is the pipeline grab. As a modern tool, the electric gripper has the advantages of high precision, high efficiency and strong reliability, which provides a better operation experience and experimental effect for the medical field.

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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

This article aims to introduce the application scenarios, technical features, challenges and solutions of integrated servo motors (PMMP4010B-CANpen) in appearance inspection equipment. Through actual case analysis, the key role of motors in improving the accuracy and stability of inspection equipment is demonstrated.

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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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