Stepper Motors > Stepper Motor Only > αSTEP Closed Loop Stepper Motors > AZ Series Closed Loop, Absolute Mechanical Encoder Stepper Motors

PKP Series 2-Phase Bipolar Stepper Motors 13 mm (0.51 in.)

28mm Stepper Motor with Electromagnetic Brake

αSTEP AZ Series Standard Type 28 mm Frame Size With Electromagnetic Brake

(Equipped With Energy-Harvesting Sensor)

Achieves reliable load holding and position monitoring without using an external battery (battery-free), even in limited space.

We are adding a new compact, lightweight 28 mm frame size model with an electromagnetic brake to our lineup of stepper motors equipped with battery-free absolute encoders.

Due to its compact and lightweight 28 mm frame size, it can be installed in limited space within equipment.
When there is a blackout or another unexpected event, the electromagnetic brake holds the load in position to prevent it from dropping.
Equipped with a battery-free absolute encoder, it performs position monitoring without the need for an external battery (battery-free).
Home sensors, limit sensors, etc. are no longer necessary, contributing to space savings and reduced wiring.

Stepper Motor Lineup

Frame Size	Motor Types	Available Options	Max. Holding Torque
DC Input 1.10 in. (28 mm) NEMA 11 Stepper Motors	Standard Type	Electromagnetic Brake	13.4 ~ 26 oz-in	0.1 ~ 0.19 N·m
Geared Type	-	42 ~ 679.7 oz-in	0.3 ~ 4.8 N·m

Frame Size

Motor Types

Available Options

Max. Holding Torque

DC Input
1.10 in. (28 mm)
NEMA 11 Stepper Motors

Standard Type

Electromagnetic Brake

13.4 ~ 26 oz-in

0.1 ~ 0.19 N·m

Geared Type

42 ~ 679.7 oz-in

0.3 ~ 4.8 N·m

Learn More About AZ Series Stepper Motors

Enables Load Holding Even in Limited Space. 28 mm Frame Size Stepper Motors With Electromagnetic Brake

Holding Torque at Motor Standstill (Electromagnetic brake)	N·m	0.047	0.08
Product Name		AZME24MK	AZME26MK
Frame Size (M)	mm	28
Length (L)	mm	80	100
Maximum Holding Torque	N·m	0.095	0.19
Rotor Inertia	kg·m²	14×10^-7	22×10^-7
Resolution When set to 1000 P/R	°/Pulse	0.36
Holding Torque at Motor Standstill (When energized)	N·m	0.047	0.08
Mass	kg	0.21	0.30

With the electromagnetic brake, the load can be held when the power is cut off.

These products have built-in power-off activated electromagnetic brakes. When power is accidentally cut off due to a blackout or other unexpected events, the electromagnetic brake holds the load in position to prevent it from dropping or moving. Also, when the motor is at standstill, it can be held by the electromagnetic brake. It is possible to suppress the heat generated from the motor by turning off the motor current.

[Challenge]

I want to implement fall-prevention measures in a limited space...

[Benefits of Using an Electromagnetic Brake]

The integrated structure of the compact motor and electromagnetic brake helps reduce peripheral components and downsize equipment.
This can reduce the design and assembly man-hours required for a separate brake mechanism.

[Challenge]

I want to reduce motor heat generation while maintaining the stop position...

[Benefits of Using an Electromagnetic Brake]

By using an electromagnetic brake to hold the load when stopped, there is no need to run a stop current through the motor, reducing motor heat generation while maintaining position.

(Usage Example)

[1] Input the STOP-COFF Signal* to stop the motor
- *STOP-COFF Signal: A non-excitation signal to stop the motor
[2] Motor excitation is turned OFF, the electromagnetic brake engages, and the load is held.