Bipolar Stepper Motor 0.4Nm Single Shaft

Bipolar Stepper Motor 0.4Nm Single Shaft


The Leadshine 40CM04 is a single shaft NEMA 17 frame size bipolar stepper motor with 0.4 N.m (57 oz-in) holding torque

  • Manufacturer: Leadshine
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  • $25.28
In stock(3 items available)

Industrial grade small stepper motor, ideal for small CNC projects and robots has a holding torque of 0.4 N·m or 57 oz·in. 5 mm diameter round shaft with flat.

This NEMA 17 frame motor is 42 mm square on the face, with four M3 taped holes. The mounting holes are 31 mm from center to center.

To drive this motor we recommend the DM422.


  • 2 phase, NEMA 17 frame size
  • 40 mm (1.57 inch) long
  • 1.5 A phase current
  • 0.4 N.m (57 oz-in) holding torque
  • 5 mm (0.197 inch) shaft size
  • Built with high quality materials including bearings and shaft made by Japanese manufacturers
  • High precision, low motor heating, and low vibration

Step angle: 1.8 ° 

Step angle accuracy: ±0.9deg

Temperature rise (max): 80 °C 

Ambient temperature: -20 to 50 °C 

Insulation Resistance (at 500 VDC): ≥100 MΩ 

Dielectric strength (1 min.): 500 VAC 

Shaft radial play (450 g load): ≤0.02 mm 

Shaft axial play (450 g load): ≤0.08 mm 

Shaft Type: Single with flat

Current per phase: 1.5 A

Resistance per phase (± 10%): 2,3 Ω 

Coil voltage (continuous): 3.45 V

Inductance per phase (± 20%): 4.3 mH

Holding torque: 0.4Nm

Number of leads: 4

Rotor inertia: 0.054 kg-cm2 (0.00076 oz-in-sec2 ) 

Weight: 280 g

Body length: 40 mm

Front shaft length: 22 mm

    • SKU
    • Weight
      0.3 kg
    • Dimensions (L x W x H)
      10 x 8 x 10 cm

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

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