Jr139-8-450kw Jr Series Wound Rotor Slip Ring Motor Ball Mill Motor

• Application: Industrial
• Operating Speed: Constant Speed
• Number of Stator: Three-Phase
• Species: Jr /Jr2
• Rotor Structure: Winding Type
• Casing Protection: IP23
• Model NO.: JR139-8-450KW
• Number of Poles: 8
• Starting Mode: Serial Rotor Resistance Starting
• Certification: ISO9001, CCC, Ce
• Brand: China Mtoor
• Protection: IP23
• Voltage: 380V/415V/660V/3kv/6kv/10kv
• Nsulation Class: F
• Stator Winding: 100%Red Copper
• Driving: Ball Mill,Steel Rolling Mill,Sugar Rolling Mill
• Cooling Method: IC01
• Rotor Winding: 100%Red Copper
• Advantage: Strong Ability for Instantaneous Overload
• Frequency: 50Hz/60Hz
• Transport Package: Plywood Case
• Trademark: ZCL
• Origin: Shijiazhuang, China
• HS Code: 8501530090
• Production Capacity: 300 PCS Per Month

Product Description

JR winding slip ring motor is specially designed for ball mill. This series of motors is a derivative of the original JR slip ring motor. It is a new product that optimizes the product structure and improves the process design, maximally meeting the use of mill equipment.
JR series ball mill motor windings have high mechanical strength and improve the insulation level of the motor. The slip ring and carbon brush device of the motor are placed outside the end cover, which can effectively prevent carbon dust from contaminating the coil, and at the same time, it is easy to replace and repair. In the manufacturing process, the power frequency to ground pressure test of the turn-to-turn pulse withstand tester was carried out. The stator and rotor windings were made of F-grade insulating varnish and cured by high temperature drying. The insulation performance of the motor was stable and reliable.

Motor power range: 80KW-900KW
Rated voltage: 380V/415V/660V/690V/3000V/33000V/6000V/10000V
Number of poles: 6/8/10/12
Rated frequency: 50Hz/60Hz
Protection level: IP23
Cooling method: IC01
Working system: S1
Insulation class: B
Wiring method: △
Installation method: B3 (horizontal installation)
Ambient temperature: ≥ -15 ° C and ≤ 40 ° C
      The deviation of the rated voltage of the YRQ ball mill motor does not exceed 5%, the allowable deviation of the frequency is 1%, and the sum of the absolute values of the deviations does not exceed 5%.

JR ball mill motor adopts rotor string resistance full-voltage start-up, which has the advantages of small starting current, large starting torque, high efficiency, low noise, low vibration, good ventilation performance, reliable operation and convenient installation and maintenance.


1. The outer packaging of the products are all standard export-oriented wooden plywood packaging.
2, the product packaging is protected by moisture, water plastic soft packaging
3. For products with special transportation requirements (such as temperature, fragile, variability, and easy to get wet), the packaging protection measures will be strengthened, and the target mark will be printed on the package.
4. There are obvious signs and symbols on the packing box that must be paid attention to during transportation and storage (such as position, moisture, rain, shockproof, lifting position, etc.).


The company insists on providing high-quality motor products and services to users, and has won high praise from many domestic and foreign customers. The company will receive many foreign merchants to visit our factory every year, and establish a good cooperative relationship through on-site inspection of our factory. Our company always welcomes customers to visit our factory.


ZCL Electric Motor Technology Co., Ltd. is a company mainly engaged in the manufacture, research and development and sales of motor products. The company has many types of motor products, including IEC standard motors. It is a professional IEC motor manufacturer. Related motor products have passed the product certification in China, the United States, Canada, Europe, the Middle East and other regions, and the products are exported to all over the world. Companies adhere to the "focus on products, service" business philosophy, is committed to improving the quality of safe motor products and services for customers around the world.