SDZ1 type electromagnetic power-off safety brakeDetailed product description：

I. Purpose
The SDZ1 electromagnetic power-off safety brake is mainly matched with Y series motors and electric hoist reducers to achieve functions such as fast stopping, accurate positioning, frequent starting, and safe braking (risk prevention) in case of power failure.
This type of brake has the advantages of compact structure, easy installation, wide applicability, low noise, high working frequency, sensitive action, and reliable braking. It is an ideal automation actuator in industrial modernization.

2、 Working principle and installation maintenance
This series of electromagnetic power-off safety brakes mainly consists of excitation parts (yoke 1, coil 2, spring 3, armature 4), brake disc 7, spline sleeve 8 and other main components. The excitation part is installed on the machine base by installing bolt 6. Rotate bolt 6 to adjust the air gap to the recommended initial installation air gap value δ (see the installation size parameter table), and then reverse rotate hollow bolt 5 to tighten the excitation part. The spline sleeve is connected to the drive shaft through rectangular splines; Brake disc 7 and spline sleeve 8 are engaged through involute splines. When the coil is powered off, under the action of spring force, friction is generated between the brake disc 7 and the end faces of the armature 4 and the machine base 9, which is transmitted to the transmission shaft through the spline sleeve 8 to brake the shaft. After the coil is energized, under the action of electromagnetic force, the armature 4 is attracted towards the magnetic yoke 1, causing the brake disc 7 to release and the transmission shaft brake to be released.

Before installation, the friction pair surface should be cleaned of oil stains and debris. After working for a period of time, due to the wear of friction materials, the working air gap of the brake is too large. It is necessary to adjust the working air gap to the recommended initial installation air gap value δ in a timely manner to avoid affecting normal operation.

3、 Technical parameter table

Specification/Model	SDZ1- forty	SDZ1- eighty	SDZ1- one hundred and fifty	SDZ1- two hundred	SDZ1- three hundred
Supporting electric hoist tonnage (t)	two	three	five	ten	twenty
Matching motor base number	one hundred and twelve	one hundred and thirty-two	one hundred and sixty	one hundred and eighty	two hundred
Rated braking torque Me (N • m)	forty	seventy-five	one hundred and fifty	two hundred	three hundred
Rated voltage DC (V)	one hundred and seventy
Rated power P20 ℃ (W)	seventy	ninety-five	one hundred and ten	one hundred and twenty	one hundred and forty-five
Braking time (s)	zero point two five		zero point three five		zero point four five
Maximum working air gap (mm)	one	one point two			one point five
Maximum allowable relative speed (rpm)	three thousand

Note: It is recommended to use the SDZ1-80 electromagnetic power-off safety brake for electric hoists weighing 3 tons or less.

4、 Installation dimension diagram and installation dimension table

δ: Recommended values for initial installation air gap.

Model/Size

D1

D2

D3

D4

L

L1

L2

L3

M

N×B

D

d

δ

SDZ1-40

one hundred and sixty-nine

one hundred and fifty

one hundred and thirty

ninety

fifty-eight

thirty

three point five

twelve

3-M8

6×5

twenty-three

eighteen

zero point five

SDZ1-80

one hundred and eighty-eight point five

one hundred and seventy

one hundred and fifty

one hundred and four

sixty-eight

thirty

three point five

fourteen

3-M8

6×5

twenty-three

eighteen

zero point five

6×6

twenty-eight

twenty-three

SDZ1-150

two hundred and twenty-two

two hundred and two

one hundred and eighty

one hundred and twenty

eighty

thirty-five

four

fifteen

4-M10

6×6

twenty-eight

twenty-three

zero point six

10×4

thirty-five

twenty-eight

SDZ1-200

two hundred and sixty-five

two hundred and forty-four

two hundred and twenty

one hundred and fifty

ninety-five

forty

four

twenty-one

4-M10

10×4

thirty-five

twenty-eight

zero point six

SDZ1-300

three hundred and ten

two hundred and eighty

two hundred and forty-eight

one hundred and fifty-five

one hundred and fifteen

fifty

four

eighteen

4-M12

According to customer requirements

zero point eight

5、 Usage conditions
The brake can operate continuously and reliably under the following conditions:
1. The altitude shall not exceed 1000 meters.
2. The ambient operating temperature ranges from -15 ° C to+40 ° C.
3. The average highest relative humidity in the wettest month is 90%, and the average lowest temperature in that month is not higher than 25 ° C.
4. There is no gas or dust in the surrounding medium that can corrode metals and damage insulation.
5. The working voltage fluctuation of the coil shall not exceed+5% to -15% of the rated working voltage.
6. Friction pairs must not contaminate oily substances.

6、 Precautions
1. Friction plates are vulnerable parts. After wear and tear, the air gap increases. When it exceeds the maximum allowable air gap of the brake, it should be readjusted, otherwise it will affect normal operation and even damage the brake.
2. When operating and braking frequently, it is necessary to regularly check whether the fasteners are loose. If they are loose, they should be readjusted and tightened before use.
3. When the brake is installed on the electric hoist, if the motor has difficulty starting or makes noise, the brake should be checked and adjusted according to the second item of this manual.

7、 Ordering precautions
Please indicate the specifications, model, name, and quantity of the brake when placing an order. Special requirements (spline matching dimensions) should be specified separately. Brake discs are vulnerable parts and can be ordered separately.

8、 Control circuit
The working voltage of the brake coil is 170V DC. Our factory has ZL and ZLKS rectifier power supplies specially designed for brakes, with input and output protection circuits, small size, reliable operation, and overall sealing. The wiring method is detailed in the ZL rectifier power supply wiring diagram.