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23HS6440-13
Zhong Hua Jiang
2V
4A
56mm
Zhong Hua Jiang 23HS6440-13 is a 57mm-frame (NEMA 23) two-phase hybrid stepper motor with a 1.8° full-step angle. The published winding data lists 2V nominal phase voltage, 4A phase current and holding torque above 1.25 N·m. It is intended for engineers, machine builders and industrial buyers selecting motion-control components for CNC axes, automated positioning and equipment integration.
The term 57mm stepper motor describes the metric frame size commonly associated with NEMA 23. A catalog listing that uses “NEMA 57” should not be interpreted as a separate verified NEMA frame standard for this product. Refer to the exact motor drawing and part number when matching mounting holes, shaft dimensions and existing equipment.
Representative stepper motor photograph. Verify the appearance and mounting drawing of model 23HS6440-13 before integration.
Published general specifications for 23HS6440-13:
| Item | Specifications |
|---|---|
| Number of Phases | 2 |
| Step Angle | 1.8°±5% |
| Rated Phase Voltage | 2V |
| Rated Current | 4A |
| Phase Resistance | 0.5 ohm±10% AT 20°C |
| Inductance | 1.8 mH±20% AT 1kHz, 1Vrms |
| Holding Torque | Above 1.25 N.m/MIN |
| Detent Torque | Below 3.5 N.cm/Max |
| Rotor Inertia | 280 g.cm² |
| Lead Style | AWG22 UL1007 (see lead-wire note) |
| Insulation Class | CLASS B |
| Dielectric Strength | 500V AC, 1 minute |
| Insulation Resistance | Above 100 MΩ |
| Allowable Thrust Load | 15N |
| Allowable Radial Load | 75 N (at the shaft end) |
The 2V figure is the nominal phase-winding voltage at rated phase current, not necessarily the external DC power supply voltage for the stepper driver. Drive supply voltage and current-limit settings must be selected from the chosen driver specification and motor data.
Get NEMA 23 Stepper Motor Pricing
For project evaluation, match the complete part number 23HS6440-13 with the motor length, phase current, winding resistance and requested torque-speed curve. Static holding torque does not indicate the torque available throughout the motor’s operating speed range.
| Model No. | Step Angle | Motor Length | Voltage | Current | Resistance | Inductance | Holding Torque | Inertia | Lead Style |
|---|---|---|---|---|---|---|---|---|---|
| (°) | (L)mm | V | A | Ω | mH | N·m (confirm approved unit) | g.cm² | # | |
| 23HS6440-13 | 1.8 | 56 | 2.0 | 4.0 | 0.5 | 1.8 | 1.25 | 280 | AWG26 1061 (see lead-wire note) |
The general specification indicates holding torque above 1.25 N·m; the original model comparison also lists 1.25 but labels the unit as mN·m. The comparison table above presents N·m as an interpretation of the general specification; confirm the final unit, holding-torque test conditions and approved rating with the model datasheet. The original data also specifies different lead-wire constructions (AWG22 UL1007 versus AWG26 1061); verify the actual wire type, insulation and connector before ordering.
The representative values can change with the exact winding and motor variant. For interchange projects, also verify shaft diameter, shaft projection, mounting dimensions, electrical connector, phase wiring and the required acceleration profile.
The published general specification lists Class B insulation for this motor. The following tables include a reference comparison of motor insulation classes and test conditions; the presence of other insulation classes in the reference chart does not mean all classes are offered for this model.
| Insulation Level | Insulation Voltage | Insulation Resistance |
|---|---|---|
| Class B | 500V A.C 1 Minute | Above 100 MΩ |
| Class F | 500V A.C 1 Minute | Above 100 MΩ |
The thermal insulation class relates to insulation-system temperature capability. Actual operating temperature depends on current settings, ambient temperature, mounting, duty cycle and ventilation.
| Temperature class of insulation | A Level | E Level | B Level | F Level | H Level |
|---|---|---|---|---|---|
| Maximum allowable temperature (℃) | 105 | 120 | 130 | 155 | 180 |
| Winding temperature rise limit (K) | 60 | 75 | 80 | 100 | 125 |
| Performance reference temperature (℃) | 80 | 95 | 100 | 120 | 145 |
The listed motor body length is 56mm. A 57mm frame is commonly called NEMA 23; however, the mounting-hole pitch, shaft diameter, shaft length, flange details and tolerances must be checked against the model-specific drawing before replacement or series production.
Reference mechanical dimension drawing. Use the approved 23HS6440-13 dimensional drawing for final installation dimensions and tolerances.
Identify the two separate motor winding pairs before connection. Use the wiring and lead-color assignment for the supplied motor revision; lead color alone is not a universal phase identification standard. Disconnect driver power before changing the motor connections.
Reference wiring illustration for a two-phase hybrid stepper motor; verify the actual winding-pair assignments.
The driver controls the phase excitation sequence to move and hold the rotor. A standard 1.8° motor provides 200 full steps per revolution. Microstepping may improve motion smoothness and command resolution, but it should not be treated as a guarantee of identical absolute positioning accuracy.
Reference phase excitation sequence. Follow the operating instructions of the chosen stepper driver.
Ask for a Motor Drawing and Wiring Details
Published operating and test conditions are listed below. Use them with the exact motor revision and the manufacturer’s latest product data when designing a machine.
| Step Angle Accuracy | ±5% |
|---|---|
| Resistance Accuracy | ±10% |
| Inductance Accuracy | ±20% |
| Temperature Rise | 80°C Max. |
| Ambient Temperature | -20°C~+50°C |
| Insulation Resistance | 100MΩ Min 500V DC |
| Dielectric strength | 500V AC 1 Minute |
| Allowable Radial Load | 75N |
| Allowable Thrust Load | 15N |
Torque-speed evaluation: The listed holding torque is a standstill value under specified energization conditions. Available torque during motion varies with speed, supply voltage, current limiting, inductance, load inertia and the drive configuration. Request a torque-speed curve for applications requiring defined acceleration, cycle time or sustained running torque.
Thermal and mechanical checks: Consider the motor heat rise, installation surface, axial and radial shaft loads, coupling arrangement and duty cycle. Do not use the bearing-load limits to infer that an unsupported belt or lead-screw load is suitable without checking the application geometry.
CNC routing and engraving machine positioning axes, subject to verified torque and mechanical fit.
Automated fixtures, indexing tables and positioning mechanisms using two-phase stepper control.
Industrial machine upgrades where the shaft, mounting, winding and driver must match an existing motor.
Motion systems requiring an engineering evaluation of 1.8° step angle, holding torque and operating speed.
Select a two-phase driver that supports the motor winding and can be configured for the required 4A phase-current rating. Check how the driver specifies peak versus RMS current, its supported supply-voltage range, microstepping options, protection functions and controller interface. The driver supply voltage is not the same as the 2V motor phase-voltage rating.
Product identification: 23HS6440-13 or the required replacement part number.
Mechanical information: mounting drawing, shaft dimensions, coupling and available installation space.
Electrical information: driver model, output current setting, supply voltage, lead-wire and connector requirements.
Operating conditions: load inertia, desired speed, acceleration, duty cycle and ambient temperature.
Purchase details: target quantity, destination and any requested labeling or drawing approvals.
Request a Technical and Commercial Quote
Zhong Hua Jiang company presentation.
Zhong Hua Jiang company information.
Huajiang began its CNC engraving spindle-motor business in 2000 and later developed related products, including variable frequency drives and CNC engraving machines. The company introduced the Zhong Hua Jiang brand in 2018.
Our product range supports CNC equipment and industrial motion-control applications. For a stepper-motor project, share your installation drawing and driver details so the applicable model and technical documentation can be reviewed.
Zhong Hua Jiang factory and brand presentation.
Industrial procurement requires consistent part identification, traceable drawings and clear communication about electrical and mechanical configurations. Zhong Hua Jiang can discuss project specifications and purchasing requirements through its sales team.
| Quality Assurance Superior quality performance Strict quality control | Patents and Certifications Several patents for air-cooled spindle motors | Additional Brand Value Brand value highly recognized by the market |
| Reasonable Price Direct factory sales Highly cost performance | Full time Service Professional technical support Close and quick customer service | Fast and Reliable Delivery Fast and efficient delivery system Real-time tracking and updates |
Zhong Hua Jiang company and service presentation.
Zhong Hua Jiang builds on Huajiang’s experience in CNC spindle motors and associated equipment. Discuss applicable motor options, purchasing documentation and order specifications before confirming a production configuration.
Company certificate and document illustration. Request model-specific certificates or test records if required for your purchase.
For imports, machine approvals or supplier qualification, request documents that explicitly identify the ordered motor or applicable production scope. Certification illustrations and general company certificates should not be taken as proof that every individual stepper motor model has the same approval.
In common motion-control catalogs, a 57mm square-frame stepper motor is generally described as NEMA 23. The designation refers to the frame category, not to torque, current, shaft diameter or the exact mounting pattern of every variant. Confirm dimensions using the drawing.
Some suppliers use “NEMA 57” informally for a 57mm metric-frame motor. The more familiar inch-based NEMA designation for this size is NEMA 23. Verify the product model and flange dimensions when comparing offers.
The published model is 23HS6440-13. Include this identifier in purchase orders, driver matching and drawing requests.
The listed nominal phase-winding voltage is 2.0V and the rated phase current is 4.0A. These are motor winding parameters, not a direct instruction for selecting the driver power supply.
The general specification lists holding torque above 1.25 N·m, while the original comparison table uses an inconsistent unit label. Confirm the value with the approved datasheet. Holding torque is measured at energized standstill; operating torque decreases or changes with speed and drive conditions.
The motor is specified as a two-phase 1.8° hybrid stepper, equivalent to 200 full steps per shaft revolution.
It can be considered for CNC positioning axes and automation, provided the verified torque-speed curve, mechanical fit, duty cycle and stepper driver meet the machine requirements.
No. The listed 2V is a nominal phase-winding voltage at the rated current. A current-regulated stepper driver typically uses a separate DC supply selected according to the driver and application requirements.
Use a compatible two-phase current-regulated stepper driver with appropriate phase-current settings. Compare peak versus RMS current definitions, supply-voltage limits, microstepping modes and the required motion-control interface.
The published motor body length is 56mm. Check the motor-specific drawing for the total envelope, shaft projection and mounting dimensions.
Use the wiring diagram for the actual motor revision or measure the winding pairs with suitable test equipment. Lead colors and connector pinouts should not be assumed interchangeable between different models.
Not necessarily. Holding torque is a standstill rating; running torque is influenced by motor inductance, drive voltage, speed, current settings and system load. Request a torque-speed curve for the intended operating points.
Microstepping depends on the selected stepper driver. It changes commanded step resolution and can improve smoothness, but it does not eliminate mechanical tolerances or guarantee equivalent absolute positioning accuracy.
The general motor specification lists Class B. The published insulation reference charts also explain other insulation classes; confirm the class and testing applicable to the supplied part.
The published values are 75N allowable radial load at the shaft end and 15N allowable thrust load. Review bearing load conditions, mounting geometry and the motor drawing for the actual mechanism.
The general specification lists AWG22 UL1007, while the model table lists AWG26 1061. The correct wire gauge and insulation for the exact supplied variant should be confirmed in the order drawing and wiring documentation.
Provide the target part number, machine application, driver, required drawings, shaft and connector details, quantity and shipping destination. This allows the supplier to review compatibility and commercial requirements.
A replacement must match mounting dimensions, shaft geometry, winding characteristics, current limits, wiring and the torque required at operating speed. Matching only the 57mm frame size is insufficient.
Contact Zhong Hua Jiang for model 23HS6440-13 or other 57mm-frame stepper motor requirements. Share the equipment drawing, required operating torque, preferred driver, wiring needs and purchase quantity to support a technical review and quotation.
