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Raydafon Drive

We have established two production facilities separately in the industrial zone.
YEJ Three-Phase Asynchronous Brake Motor

YEJ Three-Phase Asynchronous Brake Motor

Raydafon YEJ three-phase asynchronous brake motor combines an induction motor with an electromagnetic DC brake. Power covers 0.12–7.5 kW, frame 63–180, 2P/4P/6P, IP55 protection and F-class insulation. The spring-applied brake engages in 0.15–0.45 s no-load and holds vertical loads after power loss. Ideal for conveyors, hoists, packaging machinery, door operators and material handling. OEM voltage, brake supply, shaft and nameplate available.

YEJ Three-Phase Asynchronous Brake Motor

Raydafon YEJ series is a three-phase asynchronous motor with an integrated electromagnetic DC brake. It is built for equipment that must stop quickly, hold a load, or prevent coasting after power loss. Frame sizes cover 63 to 180 with 2-pole, 4-pole and 6-pole versions from 0.12 kW up to 7.5 kW as standard, and up to 225 frame on request.

Fast Braking, Holding Torque and Continuous Duty in One Frame

The brake engages when the motor is de-energised, so conveyors, hoists, packaging lines and door operators stop without extra brake hardware. Aluminium die-cast housing, F-class insulation and IP55 protection keep the motor running in dusty, damp or washdown environments.

0.12–7.5 kW Frame 63–180 2P / 4P / 6P IP55 Brake 0.15–0.45 s
Request YEJ Brake Motor Quote
YEJ Three-Phase Asynchronous Brake Motor with electromagnetic DC brake
Braking

How the Electromagnetic Brake Works

Fail-safe design: the brake is released by the motor power supply. When power is cut, the spring-applied brake locks the shaft and holds the load.

Motor energised

AC power feeds the motor and the brake rectifier simultaneously. The electromagnet pulls the pressure plate away from the friction disc, releasing the shaft.

Power loss or stop signal

The rectifier output drops, the magnet loses holding force, and the spring pushes the pressure plate onto the friction disc.

Brake engages in 0.15–0.45 s

The braking time depends on frame size and load inertia. The shaft stops quickly without external brake hardware.

Holding torque

Even on vertical loads, the spring-applied brake holds the shaft in position after the motor is de-energised.

Aluminium alloy housing Die-cast body and junction box resist rust, moisture and dust.
Finned cooling Large heat-sink surface keeps the winding cool during frequent start-stop cycles.
Low-noise bearings Precision-balanced rotor and silent bearings reduce vibration and noise.
Model

Standard Model Range – YEJ Series

Choose pole count for speed, then pick the frame and power for your load. Brake supply follows frame size: H≤100 uses AC220V rectified to DC99V, H≥112 uses AC380V rectified to DC170V.

2-Pole · 2800 rpm

  • YEJ-63120.18 kW / 1/4 HP
  • YEJ-63220.25 kW / 1/3 HP
  • YEJ-71120.37 kW / 1/2 HP
  • YEJ-71220.55 kW / 3/4 HP
  • YEJ-80120.75 kW / 1 HP
  • YEJ-80221.1 kW / 1.5 HP
  • YEJ-90S21.5 kW / 2 HP
  • YEJ-90L22.2 kW / 3 HP
  • YEJ-100L23 kW / 4 HP
  • YEJ-112M24 kW / 5.5 HP
  • YEJ-132S1-25.5 kW / 7.5 HP
  • YEJ-132S2-27.5 kW / 10 HP
  • YEJ-160M1-211 kW / 15 HP
  • YEJ-160M2-215 kW / 20 HP
  • YEJ-160L218.5 kW / 25 HP
  • YEJ-180M222 kW / 30 HP

4-Pole · 1400 rpm

  • YEJ-63140.12 kW / 1/6 HP
  • YEJ-63240.18 kW / 1/4 HP
  • YEJ-71140.25 kW / 1/3 HP
  • YEJ-71240.37 kW / 1/2 HP
  • YEJ-80140.55 kW / 3/4 HP
  • YEJ-80240.75 kW / 1 HP
  • YEJ-90S41.1 kW / 1.5 HP
  • YEJ-90L41.5 kW / 2 HP
  • YEJ-100L1-42.2 kW / 3 HP
  • YEJ-100L2-43 kW / 4 HP
  • YEJ-112M44 kW / 5.5 HP
  • YEJ-132S45.5 kW / 7.5 HP
  • YEJ-132M47.5 kW / 10 HP
  • YEJ-160M411 kW / 15 HP
  • YEJ-160L415 kW / 20 HP
  • YEJ-180M418.5 kW / 25 HP
  • YEJ-180L422 kW / 30 HP

6-Pole · 900 rpm

  • YEJ-71160.18 kW / 1/4 HP
  • YEJ-71260.25 kW / 1/3 HP
  • YEJ-80160.37 kW / 1/2 HP
  • YEJ-80260.55 kW / 3/4 HP
  • YEJ-90S60.75 kW / 1 HP
  • YEJ-90L61.1 kW / 1.5 HP
  • YEJ-100L61.5 kW / 2 HP
  • YEJ-112M62.2 kW / 3 HP
  • YEJ-132S63 kW / 4 HP
  • YEJ-132M1-64 kW / 5.5 HP
  • YEJ-132M2-65.5 kW / 7.5 HP
  • YEJ-160M67.5 kW / 10 HP
  • YEJ-160L611 kW / 15 HP
  • YEJ-180L615 kW / 20 HP
Spec

Common Technical Specifications

These parameters apply across the YEJ series unless a custom option is selected. Test reports and material certificates are available on request.

Parameter Value
Frame Size 63 – 180 (up to 225 on request)
Power Range (standard) 0.12 – 7.5 kW
Rated Voltage 380V, other voltages available
Rated Frequency 50Hz, 60Hz available
Protection Grade IP55 (IP56 / IP65 optional)
Insulation Class F (B-rise assessment)
Cooling Method IC411 self-cooled
Duty Cycle S1 continuous, suitable for frequent start-stop
Brake Supply H≤100: AC220V (DC99V); H≥112: AC380V (DC170V)
Brake Response 0.15 – 0.45 s no-load
Ambient Temperature -15°C to +40°C
Altitude ≤1000 m
Mounting B3, B5, B35 (others on request)
Application

Typical Applications

Wherever a driven machine must stop quickly or hold a position after the motor is switched off, the YEJ brake motor removes the need for a separate brake.

Conveyor Systems Belt, roller and screw conveyors that must stop without coasting.
Hoists & Winches Lifting and lowering duties needing holding torque on vertical loads.
Packaging Machinery Filling, sealing and labelling equipment with fast cycle stops.
Door & Gate Operators Rolling shutters, sliding gates and barriers with fail-safe locking.
Woodworking & Metalworking Saws, grinders and presses requiring rapid spindle braking.
Material Handling Elevators, lifts and transfer systems with position hold duty.
Quality

Quality Assurance and Custom Options

Every YEJ motor is tested for insulation resistance, winding continuity, brake engagement torque, vibration and noise before packing.

Testing & Certifications

ISO 9001:2015 quality system. Test reports and material certificates supplied with each batch. Third-party inspection available.

  • ISO 9001:2015 certified
  • GB18613-2012 energy efficiency
  • 100% brake engagement test
  • Full traceability from casting to packing
  • CE / CCC available

Custom & OEM Solutions

  • Non-standard voltages 220V, 400V, 460V
  • 60Hz or dual-frequency designs
  • Special brake DC voltages
  • Higher IP ratings IP56, IP65
  • Shaft extensions and keyway modifications
  • Custom paint and nameplate branding
FAQ

Frequently Asked Questions

Common questions about brake supply, response time, vertical mounting and duty cycle.

What is the brake supply voltage for YEJ motors?
For frame H≤100, brake supply is AC220V rectified to DC99V. For H≥112, it is AC380V rectified to DC170V. Other voltages can be customised.
How fast does the brake engage?
The no-load braking time ranges from 0.15 to 0.45 seconds depending on frame size and load inertia.
Can I use the motor in a vertical mounting position?
Yes. We offer special brake configurations and bearing arrangements for vertical shaft-up or shaft-down applications.
Are these motors suitable for frequent start-stop cycles?
Yes. The YEJ series is designed for S1 duty with intermittent braking. S4 or S5 duty ratings are available on request.
What is the warranty period?
We provide an 18-month warranty from shipment date covering manufacturing defects, with full technical support.

Partner with Raydafon – Your Brake Motor Specialist

Send the driven machine, load inertia, stop time, voltage, frequency and mounting type. Our engineers will recommend the correct YEJ frame and brake configuration, and reply within 24 hours.

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Contact Info
We are happy to provide a quote for any of our products. Give us a call at 86-574-87167707 or fill out the form below and one of our engineers will be in touch shortly. Please include a product description and any customizations you need.
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