Traction Motor Bearing Supplier 6311H52S8C4EP6X265UY Railway Insulated Deep Groove Ball Bearing

The 6311H52S8C4EP6X265UY insulated deep groove ball bearing is designed for railway traction motors and high-voltage electric drive systems where electrical insulation and high operational reliability are essential.

Featuring a durable insulated outer ring coating and optimized C4 internal clearance, this bearing effectively prevents stray current damage such as electrical pitting and fluting, ensuring long service life in demanding railway environments.

GQZ Bearing provides stable and reliable railway insulated bearings for OEM production and maintenance applications worldwide.

Reliable Electrical Insulation
Outer ring insulation prevents current passage and reduces electrical erosion risk.

C4 Internal Clearance
Optimized for high-speed, high-temperature traction motor operation.

Smooth and Low-Noise Operation
Precision raceway finishing ensures stable and quiet running.

Heavy-Duty Performance
Handles radial and moderate axial loads in railway applications.

Extended Service Life
Designed for continuous operation in harsh rail environments.

• Railway traction motors
• Electric locomotives and EMU systems
• Metro drive motors
• High-voltage industrial motors
• Wind turbine generators
• Heavy-duty electric drive equipment

• Strict quality inspection for insulation thickness and dielectric strength
• Stable production for railway and motor projects
• OEM and customized solutions available
• Competitive factory pricing for bulk buyers
• Technical support for bearing selection and application

Q1: What is the function of insulated deep groove ball bearings?
A: They prevent stray electrical current from damaging the bearing, reducing fluting and extending service life in motor applications.

Q2: Why is C4 clearance used in railway bearings?
A: C4 clearance allows for thermal expansion and high-speed operation typical in traction motors.

Q3: Can you provide OEM marking and special grease?
A: Yes. GQZ Bearing supports custom marking, grease selection, clearance options, and packaging.