Dynamic balancing solutions for the power motor industry

1.New energy vehicle drive motor  

The drive motor of new energy vehicles operates at a speed of 12,000 to 20,000 r/min under an 800V high-voltage platform. High speeds are extremely sensitive to residual unbalance.It is recommended to perform fine balancing separately after the assembly and welding of the magnetic steel to avoid confusion between assembly eccentricity and welding thermal deformation.Fuman Machinery New Energy Motor balancing machineSpecialized adaptation.

2.Flat wire drive motor rotor

The flat wire drive motor rotor is the mainstream route for new energy passenger vehicles. The ends of the flat wire windings need to be shaped by laser welding. The thermal deformation of the welding and the geometric asymmetry at the ends will introduce new eccentricity sources.It is recommended to perform fine balancing separately after the flat wire welding process and manage it separately from the assembly eccentricity.

3.Range extender generator rotor

The range extender generator operates at a speed of 3000 to 8000 r/min, with high working temperatures and harsh vibration environments. The balance quality directly affects the NVH and reliability of the entire vehicle.It is recommended to adopt horizontal double-sided automatic balancing, equipped with 100% full inspection and balance data archiving.

4.Multi-in-one electric drive assembly input shaft

The input shaft of the multi-in-one electric drive (motor + reducer + controller integrated) assembly has a large slenderness ratio, and the working speed spans the critical zone, requiring multi-speed balancing.It is recommended to conduct a retest under the complete machine condition after assembly and retain the balance data.

5.Industrial general motors rotor

General-purpose motors for the industrial field (YE3/YE4/YE5 series) operate at speeds of 1500-3000 r/min, G2.5-G6.Three is sufficient for use.The production line has a fast pace. It is recommended to adopt fully automatic double-sided balancing + automatic gluing or adding counterweights.

6.High-speed magnetic levitation/ultra-high-speed motor

The rotational speed of magnetic levitation motors is 30,000 to 50,000 r/min. The rotor has no mechanical contact but is extremely sensitive to imbalance (imbalance can cause uneven air gaps, leading to fluctuations in magnetic pull force).It is recommended to use precision soft supports and multi-speed balancing.

7.Pumping unit/Oilfield motor

The working environment of the oilfield pumping unit motor is harsh (outdoor, large temperature difference, and large vibration). It is recommended to use G2.Grade 5, sealed type models, and equipped with regular on-site rebalancing services to warn of accumulated imbalances.

8.Air compressor motor

The motor speed of the air compressor is 3000-3600 r/min, and it is directly connected to the screw compressor, with strict requirements for the dynamic balance of the rotor.It is recommended to balance the motor rotor separately before the final assembly, and then conduct the vibration verification of the entire machine after the final assembly.

9.Electric vehicle air conditioning compressor motor

The motor of the air conditioning compressor in electric vehicles is generally 6000-9000 r/min, and it is a key NVH component for new energy vehicles.Fuman Machinery Brushless motor rotor balancing machineCover such production lines.

10.Marine propulsion motor

The rotational speed of Marine propulsion motors ranges from 300 to 1500 r/min, but they have a high power density and heavy rotor weight.It is recommended to use horizontal double-sided balance with 100% full inspection.