YEJ Series

Electromagnetic Braking Three-Phase Induction Motor

Fail-safe operation. Millisecond-level braking response for hoisting, precision positioning, and emergency stops.

In vertical lifting, automated warehousing, and emergency braking scenarios, inertia is the primary adversary. The YEJ Series features an integrated industrial-grade DC electromagnetic brake.

Upon power loss, the brake engages instantly via spring force to rigidly “lock” the motor rotor. More than just a motor, it acts as a critical safety mechanism for your machinery—ensuring suspended loads remain stationary without slippage, and automated equipment stops instantly with zero position overshoot.

Decode the JWmotor model number to quickly identify the specifications for a precise replacement.

Technical Specifications

JWMotor Product Range:

Power Range (KW)

0.75 – 45

Poles

2, 4, 6, 8

Frame Size (IEC)

80 – 225

Rated Voltage

220V – 690V

Operating Conditions

+5°F To +104°F

Ambient Temperature

≤1000m

Altitude

±5% variation

Voltage Tolerance

* Class H insulation is available for high-temperature environments.
* Power derating is required for high-altitude regions.

JWMotor offers you motor solutions with the following
significant advantages

Fail-Safe Operation

Features a “power-off braking” design. In the event of an accidental facility power outage, the brake automatically engages to rigidly lock the shaft. This prevents lifted loads from free-falling or conveyors from running out of control, ensuring full compliance with strict safety production regulations.

Rapid Response

Equipped with a high-quality rectifier module, the motor goes from power cut to a complete standstill in just ~0.2 seconds. With high positioning accuracy, it is perfectly suited for precise indexing applications on automated assembly lines or stacker cranes.

Manual Release Handle

Available with a standard or optional manual release lever. During power outages, maintenance, or commissioning, operators can pull the handle to manually disengage the brake. This allows for easy manual rotation (barring) of the shaft or equipment adjustment without requiring electrical power.

Integrated Rectifier

The AC/DC rectifier is conveniently integrated within the terminal box. You simply connect the standard AC power supply. There is no need to configure an external DC power cabinet, making wiring simple and truly “Plug-and-Play.”

Industry Applications

FAQ

What is the average braking time for YEJ series motors?

The braking time of YEJ series motors is exceptionally fast, typically ranging from 0.15 to 0.45 seconds depending on the frame size. This makes them ideal for equipment requiring precise positioning or emergency stops, such as elevators and packaging machinery.

Can the YEJ motor be released manually during a power failure?

Yes. Our YEJ motors come equipped with a manual release handle. This allows you to manually release the brake and rotate the shaft in case of a power outage or during machine maintenance, ensuring operational flexibility and safety.

How do I adjust the braking torque of a YEJ motor?

The braking torque can be adjusted by tightening or loosening the pressure springs inside the brake assembly. For optimal performance, we recommend maintaining the air gap between 0.2mm and 0.5mm to ensure consistent friction and rapid response.

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