AZM-B series power-off braking type three-phase AC brakeDetailed product description：

The AZM-B series (power-off braking type) three-phase AC brake is a reliable and safe type of brake. It has the characteristics of fast start-up time and short braking time. The excitation voltage is the same as that of the motor, with simple wiring and easy operation.  

The AZM-B series three-phase AC brake has a compact product structure and convenient adjustment of braking torque and air gap. The manual release device has a dual function, and the brake can be temporarily disengaged by gently pulling the release ring. By using the screw insertion and release method, the braking state can be disengaged for a long time, and the operation is easy and reliable. The protection level of this product can reach IP55.
The AZM-B series three-phase AC brake can be directly used for variable frequency power supply. Frequency conversion power supply can be directly used for frequencies below 50Hz, and can be designed for frequencies above 50Hz if required.
The AZM-B series three-phase AC brake fully meets the requirements of being matched with Y and Y2 series motors to form YEJ series electromagnetic brake three-phase asynchronous motors, and can also be matched with variable frequency motors to form variable frequency brake motors. By utilizing its advantages of high braking torque, short braking time, convenient wiring, and high protection level, it can be widely used in various mechanical equipment that require fast braking and precise positioning.

Working Principle:
According to the AZM-B series three-phase AC brake, when the power is off, it uses spring pressure to press the armature tightly, causing a huge friction (braking) torque between the brake disc and the armature and the rear end cover of the motor, which can quickly brake rotating objects; When powered on, the principle of electromagnetic attraction and release is used to release the brake disc from the braking state, allowing the passive object to rotate freely.

Technical parameters:

Specification code	AZM-B 71	AZM-B 80	AZM-B 90	AZM-B 100
Matching YEJ motor frame number H	seventy-one	eighty	ninety	one hundred
Static braking torque Nm	five	ten	eighteen	thirty-five
Braking time ≤ S	zero point one zero	zero point one zero	zero point one five	zero point one five
Excitation power ≤ w	twenty	twenty-five	thirty	thirty-five
Normal working air gap mm	0.20～0.25		0.25～0.30
Maximum wear air gap mm	zero point five zero
Rated working voltage V	3Φ-220/380
connection method	△/Y
insulation class	F
Allow maximum speed r/min	three thousand and six hundred

Note: The rated working voltage and frequency can be designed according to user requirements, such as 50Hz 220V 400V 420V..., 60Hz 220V 380V 440V

Installation size:

Specification Code

Installation dimensions and tolerances

External dimensions

D

E

F

G

M

n-s×h

A

L

L1

C

H

basic Size

limit bias

basic Size

limit bias

basic Size

limit bias

basic Size

limit bias

basic Size

basic Size

AZM-B 71

fifteen

+0.018 0

twenty-two

0 -0.50

four

0 -0.030

seventeen

+0.10 0

one hundred and twenty

3-M8×12

one hundred and thirty-seven

eighty-one

twenty-five

thirty-one

one hundred and forty-one

AZM-B 80

nineteen point eight

+0.021 0

twenty

0 -0.50

six

0 -0.030

twenty-two point nine

+0.15 0

one hundred and twenty

3-M8×12

one hundred and thirty-seven

eighty-one

twenty-five

forty-five

one hundred and fifty-nine

AZM-B 90

twenty-four point eight

+0.021 0

twenty

0 -0.50

eight

0 -0.036

twenty-seven point nine

+0.20 0

one hundred and forty

3-M8×12

one hundred and fifty-four

eighty-three

twenty-five

fifty-three

one hundred and seventy-nine

AZM-B 100

twenty-nine point five

+0.021 0

twenty-four point five

0 -0.50

eight

0 -0.036

thirty-three

+0.20 0

one hundred and fifty-eight

3-M8×12

one hundred and seventy-four

ninety-three

twenty-five

sixty

one hundred and ninety-nine

Note: Unit (mm)

Structure, Installation and Debugging Diagram:

1. Spindle 2, Brake Installation Fixed End Cover (Seat) 3, Fixed Screw 4, Shield Sealing Ring 5, Brake Disc 6, Armature 7, Brake Spring 8, Brake Torque Adjustment Anti Loosening Nut 9, Air Gap (δ) Adjustment Nut 10, Air Gap Fixed Anti Loosening Nut 11, Coil 12, Shield 13, Magnetic Yoke 14, Shield Fixed Nut 15, Release Screw 16, Spline 17, Key 18, Clamping Spring δ, Air Gap

Air gap debugging method:
Tools: stiff hand, feeler gauge.
Debugging method: Unscrew the nuts and screws (14) and (15), remove the protective cover (12), loosen the six nuts (9) and (10), select the working air gap thickness piece according to the model of the plug gauge, insert it near the δ point of one of the fixed screws (3), screw in (10) to press the plug, and then slightly withdraw it. The plug gauge can be removed, but it should not be too loose. Then it is necessary to tighten the nut (9) and use the same method to adjust the other 2 points that are 120 ° apart. Finally, check if the air gap is the same. If it is too tight or too loose, adjust it to achieve uniformity at three points. After long-term wear and tear of the friction plate, the δ value must be checked. When the "δ" value exceeds the maximum wear air gap value, the above method must be used for adjustment, otherwise it will affect the normal operation of the brake.

Notes:
1. The surface of the armature, rear end cover, and brake disc must be free of oil stains and kept dry and clean;
2. During installation and debugging, it is necessary to ensure that the air gap "δ" value is within the working air gap range;
3. The spline sleeve must not have axial movement, and a snap spring must be added to the back end of the spline. When assembling the brake disc, apply an appropriate amount of butter to the spline teeth.