7.3kgcm 104.5oz.In 1.8° Nema17 42HS60 4 Wire Bipolar Stepper Motor

7.3kg.cm 104.5oz.in 1.8° Nema17 42HS60 bipolar stepper motor

The stepper motor is an electromagnetic device that converts digital pulses into mechanical shaft rotation. Advantages of step motors are low cost, high reliability, high torque at low speeds and a simple, rugged construction that operates in almost any environment. The main disadvantages in using a stepper motor is the resonance effect often exhibited at low speeds and decreasing torque with increasing speed.

1.Genaral Specification of nema 17 stepper motors:

• Step angle: 1.8°
• Temperature rise: below 80 ℃
• Ambient temperature: -20 ℃ ~ + 50 ℃
• Insulation resistance: minimum 100MΩ, 500VDC
• Dielectric strength: 500VAC for 1 minute
• Shaft radial clearance: 0.02 max (450 g load)
• Shaft axial clearance: 0.08Max. (450 g load)
• Maximum radial force: 28N (20mm from flange)
• Maximum axial force: 10N
• size: Approximately 42x42x60mm

2.Electrical Specification of stepper motor:

• Holding Torque: 7.3kg.cm;
• Current / Phase: 1.7A
• Step Angle(degrees): 1.8 Degree
• Model Number: NEMA17
• Phase: 2
• Type: Hybrid
• Model: JK42HS48-1684BED-02
• Motor length: 60mm
• Diameter of axle: 5mm

3.Drawing of 42HM step motor:

Advantages of Hybrid Stepper Motor

• Low cost for control achieved
• High torque at startup and low speeds
• Ruggedness
• Simplicity of construction
• Can operate in an open loop control system
• Low maintenance
• Less likely to stall or slip
• Will work in any environment
• Can be used in robotics in a wide scale.
• High reliability
• The rotation angle of the motor is proportional to the input pulse.
• The motor has full torque at standstill (if the windings are energized)
• Precise positioning and repeatability of movement since good stepper motors have an accuracy of 3–5% of a step and this error is non-cumulative from one step to the next.
• Excellent response to starting/stopping/reversing.
• Very reliable since there are no contact brushes in the motor. Therefore, the life of the motor is simply dependent on the life of the bearing.
• The motors response to digital input pulses provides open-loop control, making the motor simpler and less costly to control.
• It is possible to achieve very low-speed synchronous rotation with a load that is directly coupled to the shaft.
• A wide range of rotational speeds can be realized as the speed is proportional to the frequency of the input pulses.

Applications of step motors:

As the stepper motor are digitally controlled using an input pulse, they are suitable for use with computer controlled systems.

They are used in numeric control of machine tools.

Used in tape drives, floppy disc drives, printers and electric watches.

The stepper motor also use in X-Y plotter and robotics.

It has wide application in textile industries and integrated circuit fabrications.

The other applications of the Stepper Motor are in spacecrafts launched for scientific explorations of the planets etc.

These motors also find a variety of commercial, medical and military applications and also used in the production of science fiction movies.

Stepper motors of microwatts are used in the wrist watches.

In the machine tool, the stepper motors with ratings of several tens of kilowatts is used.