Heavy Duty Crane Motor for Overhead and Gantry Crane

I. Variable-Frequency Braking Motor

1. The YZPEJ Series Variable-Frequency Braking Motor is specially designed for metallurgical and lifting applications, featuring high starting torque, strong overload capacity, smooth operation, and reliable performance under demanding working conditions.

2.  Equipped with a three-phase AC brake powered directly by a 380V three-phase supply, it eliminates the need for a rectifier. With a wide adjustable braking torque range and two-speed capability, the brake provides fast and reliable braking, releasing instantly when energized and braking immediately when power is cut off.

3. Ideal for frequent braking and inching operations, especially in environments with significant voltage fluctuations or self-generated power supplies. The rectifier-free design significantly reduces brake failure rates and enhances overall reliability.

4. The rotor is precisely dynamically balanced and fitted with high-quality bearings for low-noise and low-vibration operation. Built-in cooling fans and heat dissipation fins effectively prevent overheating. Standard protection ratings are IP54 for the motor and IP23 for the brake, supporting continuous operation at ambient temperatures up to 40°C, with IP55 available upon request.

5. The motor housing can be made of aluminum alloy, offering excellent impact resistance, corrosion resistance, lightweight construction, and an attractive appearance.

II. Conical Brake Motor

Engineered for demanding lifting applications, the Conical Brake Motor combines a robust 65Mn conical braking system with an integrated fan-brake design to deliver safe, reliable, and low-noise performance. Its fatigue-resistant construction eliminates the limitations of traditional die-cast aluminum brake drums, while the S3-60% duty design ensures stable operation during frequent starting and inching. With an optimized bearing system and easily adjustable brake clearance, the motor provides precise braking control, reduced maintenance, and long-term reliability.

Ⅲ. Servo Motor

The Servo Motor is designed for applications requiring high precision, fast response, and accurate motion control. Featuring high torque density, excellent speed regulation, and precise positioning, it delivers smooth and stable operation even under frequent acceleration, deceleration, and reversing conditions. With a compact design, high efficiency, and reliable performance, the servo motor is ideal for precision lifting, positioning, automated material handling, and other demanding industrial applications.

Ⅳ. Integrated Drive Motor

1. The Integrated Drive Motor combines the motor and electrical drive system into a compact, integrated unit, significantly simplifying the overall system architecture. With fewer external components and shorter wiring connections, it offers space-saving installation, reduced wiring complexity, efficient power transmission, and easy commissioning and maintenance.

2. The integrated design provides precise speed control, smooth operation, fast dynamic response, and high system reliability, making it ideal for cranes, hoists, lifting equipment, and other material-handling applications.

Technical Parameters

Product Applications

1. Lifting & Hoisting Equipment
Widely used in electric hoists, winches, and construction hoists, where reliable load holding is essential. The brake securely holds the load when the motor stops, enhancing operational safety.

2. Packaging & Printing Machinery
Ideal for equipment requiring precise positioning and frequent start-stop operations. Fast braking response ensures accurate positioning for cutting, sealing, printing, and other processes.

3. Conveyor Systems
Suitable for inclined conveyor systems, where the brake prevents materials from sliding backward under gravity when the motor stops.

4. Automated Warehousing
Used in stacker cranes and automated storage and retrieval systems (AS/RS) to provide reliable stopping and precise positioning at designated storage levels.

Installation & Operation Guide

Install the motor horizontally or vertically according to the nameplate and installation requirements. Ensure the brake air gap is correctly adjusted according to the specified technical parameters.

Wiring: Connect the motor to the appropriate three-phase power supply and connect the AC brake according to the wiring diagram provided with the motor.

Brake Adjustment: If the braking performance or stopping distance requires adjustment, fine-tune the braking torque and brake clearance according to the product specifications.

Important: Ensure the brake is fully released before operating the motor. Do not operate the motor for extended periods with the brake manually released, as this may compromise braking performance and equipment safety.

FAQ | Frequently Asked Questions

Q1. What is the warranty period?
A: The motor comes with a standard 12-month warranty from the date of shipment. Extended warranty options are available upon request.

Q2. Why does the brake not engage immediately?
A: Check the brake air gap between the brake disc and armature. Excessive clearance caused by wear may delay braking response. Adjust the air gap according to the specified technical requirements.

Q3. Can the motor be used with a VFD?
A: Yes. The motor is compatible with VFD operation. However, the brake power supply must be independent of the VFD output to ensure reliable and immediate braking when the motor stops.

Q4. Why is the brake making excessive noise?
A: Excessive noise may be caused by an incorrect brake air gap, resulting in contact between the brake disc and friction surface. Check the brake clearance, wiring, and power supply for proper operation.

Q5. How can the brake be manually released?
A: Depending on the model, the brake may be equipped with a manual release lever or screw. Use the designated release mechanism to disengage the brake during maintenance. Always reset the brake before operating the motor.