Rotor Balancing for Gear Reducers and Mixing Equipment

YRD-100 Drive Shaft Balancing Machine

• Client
  Dezhou Dekai Transmission Machinery Co., Ltd.
• Challenge
  During operation, their gear reducers and mixing devices often produced abnormal noise and needed frequent repairs. The root cause was rotor unbalance at high speeds, which created friction with other components and reduced equipment lifespan.
• Solution
  ZHENGLi supplied a YRD-100 drive shaft balancing machine, configured to meet the client’s specific rotor requirements.
• Result
  The unbalance problem was resolved, leading to smoother operation, fewer breakdowns, and lower maintenance costs.

Rotor Balancing for Crushing Machine Manufacturer

YLD-650 Balancing Machine

• Client
  Shenyang Dapeng Heavy Equipment Technology Co., Ltd., a company specializing in the production of crushing machines.
• Challenge
  When operating at high speed, centrifugal forces in the grinding wheel caused rotor vibration on the bearings. This accelerated bearing wear and had a serious impact on both performance and service life of the machines.
• Solution
  To solve the rotor unbalance, we provided a YLD-650 vertical balancing machine tailored to the client’s production needs.
• Result
  With the new balancing process in place, equipment performance improved, bearing wear was reduced, and the overall service life of the machines was extended.

Rotor Balancing for Electric Motor Manufacturer

YYQ-100 Hard-Bearing Balancing Machine (Belt Drive)

• Client
  FUJIAN MINDONG NEVM TECH. CO., LTD, specialist in the development of motors and control systems.
• Challenge
  During production, the high-speed operation of motor rotors caused unbalance, resulting in noise, reduced performance, and shorter service life. The client also required a high level of balancing accuracy to meet their standards.
• Solution
  To meet the client’s accuracy requirements, a YYQ-100 hard-bearing balancing machine (belt drive) was provided for precise rotor correction.
• Result
  The unbalance issue was resolved, noise levels were reduced, and the motors achieved both improved reliability and longer service life, while meeting strict accuracy requirements.

Rotor Balancing for Transformer Cooling Fans

YYWQ-1000 Hard-Bearing Balancing Machine (Universal Joint+Belt Drive)

• Client
  TBEA Group, manufacturer of large transformers
• Challenge
  Since transformers operate 24/7, the cooling fans need to be both durable and stable. However, rotor unbalance was reducing fan stability and threatening the long-term performance of the equipment.
• Solution
  To meet these requirements, a YYWQ-1000 hard-bearing balancing machine (universal joint+belt drive) was provided, selected according to the specific fan diameter and operating conditions.
• Result
  The balancing accuracy of the fans was significantly improved, stability was enhanced, and the overall service life of the transformers was extended.

Compression Wear Testing for Material Research

MLD-10 Abrasive Wear Testing Machine (Dynamic Load Test)

• Client
  Shaoyang University in Hunan.
• Challenge & Solution
  The university needed equipment to study the compression and wear resistance of materials. We provided an MLD-10 abrasive wear testing machine (dynamic load test) to support their research needs.

On-Site Balancing for Coal Preparation Plant Fans

Portable Field Balancer

• Client
  Shandong Sunshine Group Coal Preparation Plant (April 2025)
• Challenge
  Workshop fans needed to run continuously in a demanding production environment. Rotor unbalance not only risked downtime but also damaged bearings. Because of the fan size, disassembly was not practical.
• Solution
  We provided a portable on-site balancing instrument, which allowed the fans to be balanced directly in place, ensuring stable operation and reducing stress on critical components.

YYQ-1600 Hard-Bearing Balancing Machine for Taizhou Huaxiang Metallurgical Equipment Co., Ltd.

YYWQ-1600 Hard-Bearing Balancing Machine for Shenyang Fangzheng Pump Industry

• Luoyang Yunchuan Wind Energy Technology Co., Ltd. - YLD-160G Hard-Bearing Balancing Machine
• Luoyang Haozhi Machinery Co., Ltd. - YLD-500 Hard-Bearing Balancing Machine
• Hebei Chungeng Machinery Co., Ltd. - YLD-100 Hard-Bearing Balancing Machine
• Jilin Tianlang Technology Co., Ltd. - YLD-50 Hard-Bearing Balancing Machine
• Westlake University - MLD-10 Abrasive Wear Testing Machine (Dynamic Load Test)
• Huaqiao University - MLD-10 Abrasive Wear Testing Machine (Dynamic Load Test)
• Fudan University - MLS-225 Abrasive Wear Testing Machine (Wet Sand/Rubber Wheel Test)
• Beihang University (Beijing University of Aeronautics and Astronautics) - M-2000 Friction and Wear Testing Machine
• China University of Geosciences - M-2000 Friction and Wear Testing Machine
• Beijing Jiaotong University - MLS-225 Abrasive Wear Testing Machine (Wet Sand/Rubber Wheel Test)
• Wuhan University - M-2000 Friction and Wear Testing Machine
• Sichuan University - M-2000 Friction and Wear Testing Machine
• Jinan University - M-2000 Friction and Wear Testing Machine
• Kunming University of Science and Technology - MLD-10 Wear Testing Machine
• Southwest University of Science and Technology - MPX-2000 Friction and Wear Testing Machine
• Institute of Mechanics, Chinese Academy of Sciences - M-2000 Friction and Wear Testing Machine
• Nanjing Tech University - M-2000 Friction and Wear Testing Machine / MLS-225 Abrasive Wear Testing Machine (Wet Sand/Rubber Wheel Test)
• China North Industries Group Corporation, Ningbo Branch - M-2000 Wear Testing Machine
• Shenyang Ligong University - MLD-10 Abrasive Wear Testing Machine (Dynamic Load Test)
• Wuhan University of Science and Technology - ML-100 Wear Testing Machine
• China University of Mining and Technology - MLG-130 Abrasive Wear Testing Machine (Dry Sand/Rubber Wheel Test)
• University of Science and Technology Beijing - MSH-10 Wear Testing Machine
• Yanshan University - MG-2000 Wear Testing Machine
• Inner Mongolia University - M-2000 Friction and Wear Testing Machine
• Zhengzhou University - M-2000 Friction and Wear Testing Machine
• Nanjing University of Aeronautics and Astronautics - M-2000 Friction and Wear Testing Machine