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Application Cases

Giving bearings a longer life cycle

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Automotive bearings play a critical role across all major vehicle systems—from the powertrain and chassis to electric motor assemblies and cooling modules. They must withstand complex radial and axial loads, minimize friction, maintain stability at high speed, and deliver long-term reliability even under harsh conditions such as high temperatures, dust, shock, and frequent start–stop operation.
As a global automotive bearing supplier, AKE operates under the ISO 9001:2015 quality management system and provides high-precision, high-durability bearing solutions engineered for demanding automotive environments. We offer professional bearing selection support and technical guidance tailored to each vehicle system, serving both OEM manufacturers and aftermarket customers. Our products are widely used in passenger cars, commercial vehicles, and new-energy vehicles.
AKE’s main automotive bearing supply includes: Deep Groove Ball Bearings, Angular Contact Ball Bearings, Stainless Steel Bearings, Cylindrical Roller Bearings, Thrust Ball Bearings, Other common automotive bearing types upon request.
For specialized structures or functional bearings, AKE provides custom design and engineering support based on project requirements. We can also assist with integrated sourcing—offering customers a complete, one-stop automotive bearing solution.

1. Wheel Bearings & Hub Units

Wheel bearings support the weight of a vehicle, maintain the smooth rotation of the wheels, and ensure stability during high-speed driving, cornering, and braking. They must withstand radial and axial loads from road conditions and provide excellent sealing performance to prevent water, mud, debris, and impacts.

(1) Wheel Bearings: Key Performance Characteristics

• High rigidity: Ensures stability during high-speed driving and cornering
• Strong sealing: Waterproof, dustproof, and resistant to harsh road conditions
• High-grade bearing steel (GCr15 / 42CrMo): Improves impact resistance and fatigue resistance
• Long-life grease: Reduces maintenance frequency
• Low friction, low noise: Enhances comfort and NVH performance

(2) Wheel Bearings: Common Types (Depending on Vehicle Requirements)

• Double row angular contact ball bearings: Lightweight, low friction; suitable for passenger car front wheels
• Hub unit bearings (HUB1 / HUB2 / HUB3): Highly integrated; compatible with ABS magnetic encoders
• Tapered roller bearings: Suitable for SUVs, pickups, and commercial vehicles; high load-bearing capacity

(3) Wheel Bearings: Typical Applications

• Front and rear wheel hub assemblies
• ABS/ESP systems (HUB2/HUB3 with encoders)
• Steering knuckle assemblies

2. Transmission Bearings

Transmission bearings operate under high speed, heavy loads, and constant gear changes. They must maintain precise gear meshing, reduce friction losses, and offer high wear resistance, fatigue strength, and stable lubrication inside high-temperature environments.

(1) Transmission Bearings: Common Bearing Types

• Deep groove ball bearings (6000 / 6200 series): Low friction, low noise, widely used in rotating shafts
• Angular contact ball bearings: Handle combined loads; used on input and main shafts
• Cylindrical roller bearings: Support high radial loads; ideal for high-torque applications
• Needle roller bearings: Compact structure; used in synchronizers and planetary gear sets

(2) Transmission Bearings: Typical Applications

• AT / MT / CVT / DCT transmissions
• Differentials
• Clutch release systems

3. Engine Bearings

Engine bearings must operate under extreme temperatures, explosive combustion loads, high speeds, and continuous vibration. They must provide excellent wear resistance, stable oil film formation, and long-term durability for smooth engine operation.

(1) Engine Bearings: Common Bearing Types

• Journal bearings / engine bushings (main & rod bearings): Core components supporting crankshaft and connecting rod rotation
• Thrust bearings: Carry axial loads from the crankshaft
• Needle bearings: Used in camshafts or small-end connecting rod areas with limited space

(2) Engine Bearings: Typical Applications

• Crankshaft main journals: Carry high radial loads from combustion
• Connecting rod assemblies: Handle reciprocating impact and high-temperature friction
• Camshaft support: Requires low friction, strong oil film, and heat resistance

4. EV / HEV Motor Bearings

Electric motors operate at extremely high speeds and generate electromagnetic vibration, with higher temperature sensitivity than traditional engines. Bearings must provide low friction, high-speed stability, electrical insulation, and resistance to electrical erosion.

(1) EV / HEV Motor Bearings: Common Bearing Types

• High-speed deep groove ball bearings
• Hybrid ceramic bearings (ceramic balls + steel rings)
• Insulated bearings (anti-electric erosion)

(2) EV / HEV Motor Bearings: Typical Applications

• Traction motors: High speed, high temperature, electromagnetic vibration
• Electric pumps & EDU systems: Require low noise, high efficiency, and long life
• E-axle systems: Integrated motor + reducer + differential

5. Alternator & Starter Motor Bearings

Alternators and starter motors operate at high speeds, elevated temperatures, and frequent start-stop cycles. Bearings must ensure low friction, heat resistance, and long-life lubrication.

(1) Alternator & Starter Motor Bearings: Common Bearing Types

• 6202 / 6203 / 6303 series: Low noise, low friction, high durability
• High-temperature sealed bearings: Rated for 150–180°C, with improved dust- and oil-resistance to prevent grease leakage and seal degradation

(2) Alternator & Starter Motor Bearings: Typical Applications

• Alternators (high-speed rotor support)
• Starter motors (high-torque, frequent engagement)
• ISG motors for mild-hybrid systems

6. A/C Compressor Bearings

A/C compressors operate under high load, high temperature, continuous vibration, and fluctuating refrigerant pressure. Bearings must offer excellent strength, wear resistance, and reliable sealing.

(1) A/C Compressor Bearings: Common Bearing Types

• High-speed deep groove ball bearings
• Hybrid ceramic bearings (ceramic balls + steel rings)
• Insulated bearings (anti-electric erosion)

(2) EV / HEV Motor Bearings: Typical Applications

7. Steering System Bearings

Steering system bearings ensure light, smooth steering operation and precise response. They must withstand vibration, impact loads, and multi-directional forces.

(1) Steering System Bearings: Common Bearing Types

• Thrust ball bearings: Handle axial pressure during steering
• Needle roller bearings: Compact, high load capacity, low friction
• Tapered roller bearings: Used in steering knuckles and kingpins; offer high rigidity and durability

(2) Steering System Bearings: Typical Applications

• Steering column assemblies
• Steering racks and housings
• Steering knuckle and kingpin support

8. Suspension System Bearings

Suspension systems face frequent vibration, impact, and complex motion. High-quality suspension bearings help improve ride comfort, reduce noise, and enhance handling performance.