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The 6313-M-C3-SQ77 Insulated Deep Groove Ball Bearing is specially designed for railway traction motors and high-voltage applications where protection against electrical current damage is critical.

With an insulated outer ring coating and C3 internal clearance, this bearing effectively prevents electrical pitting, fluting, and premature failure, ensuring long service life in demanding railway environments.

GQZ Bearing supplies stable and reliable insulated bearings for railway systems, traction motors, and heavy-duty industrial equipment.

Electrical Insulation Protection
Prevents current passage through the bearing, avoiding electrical erosion damage.

SQ77 Insulated Coating Technology
Durable and wear-resistant insulation layer with stable dielectric performance.

C3 Internal Clearance
Suitable for high-temperature and high-speed railway motor operation.

Heavy-Duty Load Capacity
Designed for demanding traction and industrial environments.

Long Service Life
Reduces maintenance frequency and downtime in railway systems.

• Railway traction motors

• Electric locomotives

• Metro and EMU motor systems

• High-voltage industrial motors

• Wind power generators

• Heavy-duty electric drive equipment

• Strict quality inspection for insulation thickness and voltage resistance

• Stable production for railway and motor bearing supply

• OEM and project customization supported

• Competitive factory pricing for bulk orders

• Technical support for insulated bearing selection

Q1: What does SQ77 mean in this bearing?
A: SQ77 refers to the insulated coating specification on the outer ring, designed to provide reliable electrical insulation performance.

Q2: Is the 6313-M-C3-SQ77 bearing suitable for traction motors?
A: Yes. It is specifically designed for railway traction motors and other high-voltage motor applications.

Q3: Can you provide customized insulated bearings?
A: Yes. GQZ Bearing supports customization of insulation type, clearance, grease, and packaging for OEM projects.