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Automobile & Motorcycle dynamic balance scheme

Column: ApplicationsPublished: 2026-09-02Views: 93


1.Automotive turbocharger compressor wheel/impeller View the detailed plan →

The compression wheel, impeller, turbine shaft and turbine head of the automotive turbocharger generally exceed 100,000 r/min in mainstream hybrid models and 800V high-voltage platforms. The thin-walled geometry of the blades is amplified into significant vibration by tiny residual eccentricity at high speeds, which directly affects the NVH, bearing life and reliability of the entire vehicle.Fuman Machinery Laser machine balancing Machine & Non-contact material removal is adopted to avoid mechanical cutting damage to the blade profile and coating."Matching New Energy Motor balancing machineConducting component process verification can achieve the G2 of the original equipment manufacturer.Grade 5 requirements.

2.Motorcycle brake discs/wheels/crankshafts

Among the four typical parts of motorcycles, namely brake discs, wheels, clutches and crankshafts, the crankshaft belongs to a multi-turning irregular structure, and ordinary double-sided machines cannot meet the process requirements.Brake discs belong to the category of disc parts and are preferred for vertical balancing machines.Fuman Machinery Vertical disc balancing machineSpecifically designed to cover brake discs and clutch pressure plates, in coordination with Serial rotor balancing machineThe Speed range can handle the crankshafts of small-displacement motorcycles simultaneously.

3.Automobile instrument pointer/micro and special motor

The automotive instrument pointer rotor belongs to the category of micro and special motors. It is small in size, high in speed, and has a large batch size. It mainly addresses the initial eccentricity caused by uneven density of injection molded parts and the eccentricity during magnetic tile assembly. The commonly used vertical single-sided balancing + automatic gluing process can achieve a cycle time of 8 to 12 seconds per piece.Fuman Machinery Brushless motor rotor balancing machineCover the mass production lines of micro and special motors.

4.Heat pump air conditioning scroll compressor

The rotor components of the scroll compressor for the heat pump air conditioning of new energy vehicles are generally 6000-9000 r/min on the 800V platform. The scroll plates are geometrically asymmetrical, and the requirements for the residual unbalance amount are strict.It is recommended to perform fine balancing separately after the welding process to avoid confusion between assembly eccentricity and welding thermal deformation.Fuman Machinery New Energy Motor balancing machineAdapt to this type of high-speed rotor.

5.Automobile blower/air conditioning heater/seat fan

The working speed of the blower assembly and the impeller is 1500-3000 r/min. The main problems come from the uneven density of the injection-molded impeller and the eccentricity of the motor bearing. The fully automatic double-sided balancing and gluing process can significantly reduce vibration and noise.Fuman Machinery Brushless motor rotor balancing machineThe vertical models cover the blower production line.

6.Micro and special motors (starter/wiper/window rocker/seat)

Micro and special motors cover four major families: starter motors, wiper motors, window swing motors, and seat motors. They generally operate at a speed of 1500-3000 r/min and require 100% full inspection and retention of process data to facilitate quality traceability by the original equipment manufacturers.Fuman Machinery Serial rotor balancing machineIt is compatible with series-excited winding micro and special motors and supports industrial bus connection to MES.

7.Automotive drive motors (hub/hybrid)

Automotive drive motors include hub motors, hybrid motors and drive motors, with rotational speeds ranging from 6,000 to 16,000 r/min. They are key NVH components for new energy vehicles.It is recommended that the flat wire windings be finely balanced separately after welding to remove the eccentricity introduced by thermal deformation.Fuman Machinery New energy drive motor balancing machineSpecialized adaptation.

8.Automobile brake discs/brake drums/retarders

Automobile brake discs and brake drums are typical disc-type parts, and vertical single-sided balancing is generally recommended.The rotor of the retarder has a compact structure and mostly adopts horizontal double-sided balancing.It is recommended that all heavy-duty trucks and buses undergo 100% full inspection and be filed piece by piece.Fuman Machinery Vertical disc balancing machineCovering all series of disc brake parts.

9.Wheels and hubs

The wheels and rims of a car are often overlooked in the problem of overall vehicle shaking (commonly known as "shaking direction"). A large amount of residual unbalance can cause the steering wheel to shake and the tires to wear unevenly at high speeds.The vertical balancing machine of Fuman Machinery can complete the balancing of hub assemblies in one go, including tire pressure and valve stem eccentricity compensation.

10.Axle main reducer and differential

The main reducer and differential of the axle are load-bearing components and often have gear meshing eccentricity. It is recommended to conduct a balance recheck under the overall machine condition after assembly to avoid assembly errors being overlooked.Fuman Machinery can undertake sample evaluation and batch plan argumentation.

11.Automobile drive shaft/universal joint

The drive shaft is equipped with a universal joint, and its even imbalance needs to be corrected at a specific phase position, which cannot be solved by ordinary static balancing.It is recommended to use the double-sided balancing + phase compensation method, and pay attention to the multi-speed balancing of the working speed across the critical section.

12.Automobile transmission (input shaft/hydraulic torque converter)

The input shaft of the transmission is a slender shaft with obvious flexible deformation. When the working speed approaches the first-order critical speed, multi-speed balancing is required.The impeller of the hydraulic torque converter is an irregular part. It is recommended to conduct a retest under the condition of the entire machine after assembly.

13.Automobile engine (crankshaft/flywheel)

The crankshaft of an automotive engine is of a multi-shaft structure, while a common double-sided machine is only suitable for single-shaft parts.The multi-turn crankshaft requires a dedicated multi-plane balancing machine, and the unbalance amount is allowed according to the allocation of each turn.Flywheels and dual-mass flywheels belong to disc-type parts and are preferred for vertical models.

14.Automobile water pump/oil pump/oil filter

The impeller speed of the three typical components of automotive water pumps, oil pumps and oil filters is 3000-6000 r/min. The uneven density of the injection molded impeller parts is the main source of eccentricity.The vertical single-sided balancing and gluing process can solve the problem.

15.Automobile cooling fan/silicone oil clutch

The rotational speed of the cooling fan and the silicone oil clutch is relatively high. Common imbalances are caused by uneven casting of the fan blades and deviation in the distribution of the friction plates of the silicone oil clutch.Fuman Machinery Serial rotor balancing machineCoverage with vertical models.



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