EV Traction Motor Radial Shaft Seals

Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of ev traction motor radial shaft seals in China, also supports customized service. Please feel free to buy high quality ev traction motor radial shaft seals for sale here from our factory.

 

 

 

EV traction motor radial shaft seals are key sealing components for the rotor shaft in electric vehicle drive motors. Their main functions include preventing lubricating oil leakage, isolating external contaminants (such as dust and moisture), and coping with special challenges brought by high-speed and electromagnetic environments.

 

 

 

• Dynamic Seal: When the motor shaft rotates at high speed, radial shaft seals maintain complete isolation of the lubricating oil cavity from the external environment.

 

• Static Protection: Prevent moisture or impurities from entering when the vehicle is stationary or in extreme environments (such as wading, or high dust).

 

• Reduce Friction: Reduce energy loss and improve motor efficiency through low-friction materials and lubrication design.

 

• Vibration Buffering: The flexible sealing structure absorbs slight vibrations during motor operation and protects bearings and transmission systems.

 

 

  Efficient Sealing Performance

 

EV traction motor radial shaft seals adopt a multi-layer composite sealing lip design, combined with a dynamic adaptive structure, to ensure zero leakage of lubricating oil and zero intrusion of pollutants when the motor rotates at high speed.

 

The sealing material is highly compatible with lubricants and will not age or expand after long-term use.

 

  High Temperature and Wear Resistance

 

It can withstand a wide temperature range (-40°C to +200°C) and adapt to the extreme heat generated by high motor speeds (>15,000 rpm).

 

Surface coating or special materials (such as PTFE/fluoro rubber) reduce the friction coefficient, reduce shaft wear, and extend service life.

 

  Long Life Design

 

The optimized spring reinforcement structure provides constant radial force, compensates for the slight deformation of the material after long-term operation, and the sealing performance is long-lasting and stable.

 

Excellent anti-fatigue and anti-ozone performance, the life is the same as the motorcycle, and maintenance costs are reduced.

 

  Environmental Protection and Lightweight

 

Traction motor radial shaft seals meet the environmental protection requirements of the electric vehicle industry, and the material does not contain harmful substances (such as silicone) to avoid contamination of motor lubricating oil.

 

Lightweight design reduces overall weight and helps improve vehicle energy efficiency.

 

 

1. Multi-layer composite sealing lip

 

Main sealing lip: High-precision contact surface fits tightly with the motor shaft, dynamically sealing lubricating oil.

Dustproof lip: Additional protective layer on the outside to intercept external pollutants such as dust and water mist.

Spring reinforcement: Built-in stainless steel spring, continuously providing radial pressure to ensure close contact between the sealing lip and the shaft surface.

 

2. Material

 

Elastomer material: Optional fluororubber (FKM), hydrogenated nitrile rubber (HNBR), or acrylic rubber (AEM), adaptable to different temperatures and medium environments.

Metal skeleton: High-strength stainless steel or aluminum alloy shell to ensure the overall structural rigidity and resist installation deformation.

 

FKM	Property	Unit	Test Method	Test Parameter	Value
	Hardness	Shore A	ASTM D 2240		90
	Specific Gravity	g/cm3	ASTM D 1817		1.75
	Tensile Strength	MPa	ASTM D 412		10
	Ultimate Elongation	%	ASTM D 412		115
	Compression Set	%	ASTM D 395 B/1	24h / 200°C	36
	Low temp. resistance	°C	ASTM D 1329	TR10	-47
	Bending Test		internal	4h / -55°C	pass

 

 

1. New Energy Vehicle Drive Motors: main drive motors and wheel hub motors for pure electric vehicles (BEV) and hybrid electric vehicles (PHEV).

 

2. Electric Drive System: integrated electric drive axle (e-Axle), motor-reducer integrated unit.

 

3. Auxiliary Motors and Charging Systems: on-board charger (OBC), DC-DC converter cooling pump motor.

 

4. Industrial and Special Vehicles: traction motor seals for electric forklifts, AGV logistics vehicles, and construction machinery.

 

***Welcome to customize the drawings!

 

 

 

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