China best High Torque Hybrid 2 Phase Stepper Motor Electric Motor DC Motor NEMA 1.7″ for CNC Machine vacuum pump

Product Description

Product Description

Stepper Motor Description

This bipolar Nema 1.7″ 42 mm square stepper motor is configured with step angle 1.8° with a size of 42 mm x 42 mm x 29.7 mm. It has 4 wires for bipolar connection and each phase draws current 0.80 A at 2.72 V, with bipolar holding torque 15.00 [Ncm] min.

Thanks to their accurate and smooth movements the Ever Elettronica hybrid stepper motors are designed to work in the textile and printing industries and suitable for camera control and 3D printers.

Product Parameters

Motor Technical Specification


NEMA 1.7″ – 42 mm square

Bipolar holding torque

15.00 [Ncm] min.

Step angle

1.8 [°] ± 5 [%]

Rated voltage

2.72 [Volt]

Rated current

0.80 [A/ph]

Phase resistance

3.40 [Ohm] ± 10 [%]

Phase inductance

5.70 [mH] ± 20 [%]

Rotor inertia

26.6 [g.cm²]

Wires number

4 wires for bipolar connection

Wires output

With connector

Ambient temperature

-20 [°C] ~ +40 [°C]

Temperature rise

80 [K]


15 [%] ~ 90 [%]

Insulation resistance

100 [Mohm] min.

Dielectric strength

500 [VAC 1 Minute]

Insulation class

Classe B, 130°C

Class protection


Max. shaft radial load

21 [N]

Max. shaft axial load

10 [N]


29.700 [mm]


Single shaft

Dimensions H x L x W

42.0 [mm] x 42.0 [mm] x 29.7 [mm]


0.18 [Kg.]

Mechanical Drawing (in mm)


Nema Model Length Step Angle Current/Phase Resistance/Phase Inductance/Phase Holding Torque # of Leads Rotor Inertia
(L)mm ( °) A Ω mH N.M. No. g.cm2
Nema8 EW08-210H 37.8 1.80  1.00  4.30  1.70  0.04min 4.00  2.90 
Nema11 EW11-110 30.1 1.80  1.00  4.50  3.80  0.08min 4.00  5.00 
EW11-110H 30.1 1.80  1.00  4.50  4.00  0.07min 4.00  9.00 
EW11-310 50.4 1.80  1.00  2.50  2.20  0.14min 4.00  20.00 
EW11-310D 50.4 1.80  1.00  2.50  2.20  0.14min 4.00  20.00 
Nema14 EW14-110 25.5 1.80  1.00  3.30  3.80  0.17min 4.00  25.00 
EW14-210 40.5 1.80  1.00  4.00  6.10  0.2min 4.00  25.00 
Nema17 EW17-220 33.7 1.80  2.00  0.70  1.40  0.3min 4.00  40.00 
EW17-320 39.2 1.80  2.00  1.00  1.80  0.45min 4.00  60.00 
EW17-320D 39.2 1.80  2.00  1.00  1.80  0.45min 4.00  60.00 
EW17-420 47.2 1.80  2.00  1.00  2.00  0.56min 4.00  80.00 
EW17-420D 47.2 1.80  2.00  1.00  2.00  0.56min 4.00  80.00 
EW17-420M 80.1 1.80  2.00  1.35  3.20  0.48min 4.00  77.00 
EW17-520 60 1.80  2.00  1.35  2.90  0.70min 4.00  115.00 
EW17-520M 99.1 1.80  2.00  1.77  4.00  0.72min 4.00  110.00 
Nema23 EW23-140 41.9 1.80  4.00  0.37  1.00  0.70min 4.00  170.00 
EW23-240 52.9 1.80  4.00  0.45  1.70  1.25min 4.00  290.00 
EW23-240D 52.9 1.80  4.00  0.45  1.70  1.25min 4.00  290.00 
EW23-240M 95.5 1.80  4.00  0.44  1.40  1.20min 4.00  480.00 
EW23-340 76.4 1.80  4.00  0.50  1.80  2.00min 4.00  520.00 
EW23-340D 76.4 1.80  4.00  0.50  1.80  2.00min 4.00  520.00 
EW23-350M 116.5 1.80  5.00  0.40  1.80  2.00min 4.00  480.00 
Nema24 EW24-240 54.5 1.80  4.00  0.45  1.20  1.40min 4.00  450.00 
EW24-440 85.5 1.80  4.00  0.80  3.00  3.00min 4.00  900.00 
EW24-450M 125.6 1.80  5.00  0.42  1.80  3.00min 4.00  900.00 
Nema34 EW34-260 79.5 1.80  6.00  0.38  2.80  4.5min 4.00  1900.00 
EW34-360 99 1.80  6.00  0.47  3.90  6.00min 4.00  2700.00 
EW34-460M 155.3 1.80  6.00  0.54  5.00  8.20min 4.00  3800.00 
EW34-560 129 1.80  6.00  0.64  6.00  9.00min 4.00  4000.00 
EW34-660 159.5 1.80  6.00  0.72  7.30  12min. 4.00  5000.00 
EH34-530 129 1.80  3.60  1.06  10.00  7.1min 4.00  4000.00 

Company Profile

     Taking advantage of the proactive climate of the 70s, in 1977 the engineer Felice Caldi, who had always been a passionate builder and inventor, founded an innovative company, operating internationally in the field of software for industrial machinery.
Since then, this small company based in Lodi has enjoyed continuous successes related to innovative products and cutting edge “best in class” technologies in the field of industrial automation, as proven by the many patents filed during the years as well as the important awards given to it by the Chamber of Commerce of Milan and of the Lombardy Region.
    The company, thanks to its successes over time, has grown considerably, expanding its sales network abroad and opening another company in China to manage the sales flow in the Asian market. 
    Ever attentive to the dynamics and needs of the automation market, constantly evolving and continually seeking technological innovation, Ever Elettronica has been able to respond to all the technological challenges that have arisen over the years, providing solutions able to make its customer’s machines more and more performing and highly competitive.
    And it is precisely to underline the importance and the uniqueness of every single customer that we design, with care and dedication, highly customised automation solutions, that are able to perfectly meet any request, both regarding software and hardware.
    Our team of mechatronic engineers can indeed customise the software with specially designed firmware, and it can also adapt the motor by customising, for example, the length of the cables or the diameter of the crankshaft and the IP protection degree, all strictly based on the customer’s technical specifications.

Stepper Motor Application:
Stepper Motor Production Flow:

Application: Medical and Laboratory Equipment
Speed: Low Speed
Number of Stator: Two-Phase


.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

3 phase motor

What are the common applications of 3-phase motors?

3-phase motors find widespread use in various industrial, commercial, and residential applications. Their efficiency, reliability, and ability to provide high torque output make them suitable for a wide range of tasks. Here’s a detailed explanation of the common applications of 3-phase motors:

  • Industrial Machinery: 3-phase motors are extensively used in industrial machinery, including pumps, compressors, fans, blowers, mixers, conveyors, and machine tools. These motors provide the necessary power and torque to drive heavy-duty equipment and ensure reliable operation in manufacturing facilities, factories, and processing plants.
  • HVAC Systems: Heating, ventilation, and air conditioning (HVAC) systems often rely on 3-phase motors for their operation. These motors power the fans, blowers, and compressors in HVAC units, ensuring efficient air circulation, temperature control, and refrigeration in commercial and residential buildings, offices, hospitals, and shopping malls.
  • Pumps and Water Systems: 3-phase motors are commonly used in pumps for water supply systems, irrigation systems, wastewater treatment plants, and industrial pumping applications. These motors provide the necessary power to move water, fluids, or other liquids efficiently and reliably.
  • Electric Vehicles: Electric vehicles (EVs) and hybrid electric vehicles (HEVs) utilize 3-phase motors for propulsion. These motors provide the necessary torque and power to drive the vehicle’s wheels, offering efficient and eco-friendly transportation solutions.
  • Industrial Robotics: 3-phase motors play a crucial role in industrial robotics, where precise and dynamic motion control is required. These motors provide the necessary power and torque to actuate the robotic arms, joints, and end-effectors, enabling precise movement and manipulation in manufacturing, assembly, and automation processes.
  • Machine Tools: Machine tools, such as lathes, milling machines, grinders, and CNC machines, rely on 3-phase motors for their operation. These motors provide the rotational power and control required for cutting, shaping, and machining various materials in metalworking, woodworking, and fabrication industries.
  • Oil and Gas Industry: The oil and gas industry extensively employs 3-phase motors in various applications, including pumps for oil extraction and transportation, compressors for gas compression, and fans for ventilation in refineries and petrochemical plants.
  • Renewable Energy Systems: Wind turbines and solar tracking systems often utilize 3-phase motors. These motors enable efficient conversion of wind or solar energy into electrical energy, contributing to the generation of clean and sustainable power.
  • Food Processing and Packaging: 3-phase motors are commonly found in food processing and packaging equipment, such as mixers, grinders, slicers, conveyors, and filling machines. These motors provide the power and control required for efficient and hygienic processing, packaging, and handling of food products.

These are just a few examples of the common applications of 3-phase motors. Their versatility, reliability, and ability to deliver high torque output make them suitable for a wide range of tasks across various industries and sectors.

3 phase motor

What maintenance practices are essential for prolonging the lifespan of a 3-phase motor?

Proper maintenance is crucial for prolonging the lifespan and ensuring the reliable performance of a 3-phase motor. Here are some essential maintenance practices that should be followed:

  • Regular Cleaning: Keep the motor and its surrounding area clean and free from dust, dirt, and debris. Regularly inspect and clean the motor’s exterior, ventilation openings, and cooling fins. This helps prevent the accumulation of contaminants that can interfere with the motor’s cooling and ventilation, leading to overheating and reduced efficiency.
  • Lubrication: Follow the manufacturer’s recommendations for lubrication intervals and use the specified lubricants. Proper lubrication of bearings, gears, and other moving parts reduces friction, minimizes wear and tear, and ensures smooth operation. Inspect and replenish lubricants as needed, taking care not to over-lubricate, which can cause excessive heat buildup.
  • Vibration Analysis: Monitor motor vibrations regularly using vibration analysis techniques. Excessive vibration can indicate misalignment, worn bearings, or other mechanical issues. By detecting and addressing vibration problems early on, potential failures can be prevented, and the motor’s lifespan can be prolonged.
  • Electrical Inspections: Periodically inspect the motor’s electrical connections, terminals, and wiring for signs of wear, loose connections, or overheating. Tighten any loose connections and address any abnormalities promptly. Electrical inspections help prevent electrical failures and ensure safe and efficient motor operation.
  • Temperature Monitoring: Monitor the motor’s operating temperature using temperature sensors or thermal imaging. Abnormally high temperatures can indicate issues such as overload, insufficient cooling, or bearing problems. Regular temperature monitoring allows for timely identification of potential problems and the implementation of corrective measures.
  • Alignment and Balancing: Ensure the motor is properly aligned with the driven equipment, such as pumps or fans. Misalignment can cause excessive stress on the motor shaft and bearings, leading to premature failure. Additionally, balance any rotating components, such as fan blades or impellers, to reduce vibrations and strain on the motor.
  • Inspect and Replace Worn Parts: Regularly inspect the motor’s components, such as belts, pulleys, brushes, and capacitors, for signs of wear, damage, or deterioration. Replace any worn or damaged parts promptly to prevent further damage to the motor and ensure optimal performance.
  • Preventive Maintenance Schedule: Establish a preventive maintenance schedule based on the manufacturer’s recommendations and the motor’s operating conditions. This schedule should include routine inspections, lubrication, cleaning, and testing. Adhering to a regular maintenance routine helps identify potential issues early on and allows for timely repair or replacement, thus extending the motor’s lifespan.
  • Training and Documentation: Ensure that maintenance personnel are properly trained in motor maintenance procedures and safety protocols. Maintain detailed documentation of maintenance activities, including dates, observations, and performed tasks. This documentation provides a historical record of maintenance activities and facilitates troubleshooting and future maintenance efforts.
  • Environmental Considerations: Protect the motor from harsh environmental conditions, such as excessive heat, humidity, dust, or corrosive substances. If the motor is exposed to such conditions, consider implementing protective measures, such as enclosures, ventilation systems, or sealing, to safeguard the motor and prolong its lifespan.

By implementing these maintenance practices, motor owners can maximize the lifespan, reliability, and performance of their 3-phase motors. Regular inspections, cleaning, lubrication, and addressing any identified issues promptly are key to ensuring optimal motor operation and minimizing the risk of unexpected failures.

3 phase motor

What role do 3-phase motors play in the efficiency of HVAC systems?

3-phase motors play a crucial role in enhancing the efficiency of HVAC (Heating, Ventilation, and Air Conditioning) systems. Here’s a detailed explanation of their contribution:

  • Air Handling Units (AHUs):
    • 3-phase motors are commonly used in HVAC systems to power the fans in air handling units (AHUs). These fans circulate and distribute conditioned air throughout the building.
    • The use of 3-phase motors in AHUs allows for efficient and reliable operation. They can deliver the necessary airflow at varying static pressures, ensuring optimal air distribution and ventilation in different zones of the building.
  • Chillers and Cooling Towers:
    • In large-scale HVAC systems, 3-phase motors are utilized in chillers and cooling towers. These components are responsible for cooling the water used in the HVAC system.
    • Efficient 3-phase motors drive the compressors and fans in chillers and cooling towers, enabling effective heat transfer and temperature control. This results in improved energy efficiency and cooling performance of the HVAC system.
  • Variable Air Volume (VAV) Systems:
    • 3-phase motors are often employed in Variable Air Volume (VAV) systems, which allow for individual control of airflow in different zones or rooms of a building.
    • By using 3-phase motors in VAV systems, the air volume can be easily adjusted to meet the specific cooling or heating demands of each zone. This enables precise temperature control, reduces energy wastage, and enhances overall HVAC system efficiency.
  • Energy-Saving Measures:
    • 3-phase motors in HVAC systems can be integrated with energy-saving measures to improve efficiency. For example, they can be paired with variable frequency drives (VFDs), which allow for the modulation of motor speed and power consumption based on actual needs.
    • VFDs control the speed of 3-phase motors, ensuring that they operate at optimal speeds for different load conditions. This results in significant energy savings, as motors consume less power when operating at lower speeds.
  • Reliability and Durability:
    • HVAC systems require reliable and durable components to ensure continuous operation. 3-phase motors are known for their robust construction and ability to withstand the demanding conditions typically found in HVAC applications.
    • The reliability of 3-phase motors minimizes the risk of motor failures and unexpected downtime, allowing HVAC systems to operate efficiently and maintain occupant comfort.

Overall, 3-phase motors play a critical role in enhancing the efficiency of HVAC systems. They power the fans, compressors, and pumps, enabling effective air distribution, temperature control, and heat transfer. Their integration with energy-saving measures further optimizes energy consumption, resulting in improved overall HVAC system efficiency and reduced operating costs.

China best High Torque Hybrid 2 Phase Stepper Motor Electric Motor DC Motor NEMA 1.7China best High Torque Hybrid 2 Phase Stepper Motor Electric Motor DC Motor NEMA 1.7
editor by CX 2023-10-20