HC6214-M-C4-M15AS railway ball bearings insulated deep groove ball bearings

The HC6214-M-C4-M15AS insulated deep groove ball bearing is specially designed for railway traction motors and high-voltage applications requiring electrical insulation and reliable high-speed performance.

With an insulated outer ring coating and C4 internal clearance, this bearing effectively prevents stray current damage such as electrical pitting and fluting, ensuring extended service life in demanding railway environments.

GQZ Bearing supplies railway-grade insulated ball bearings with stable quality for OEM and maintenance projects worldwide.

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

C4 Internal Clearance
Optimized for high-speed and elevated temperature railway motor operation.

Heavy-Duty Performance
Suitable for radial and moderate axial loads in traction systems.

Railway-Grade Reliability
Designed for continuous operation under vibration and heavy load conditions.

Low Maintenance Requirement
High-quality grease and sealed structure reduce maintenance frequency.

• Railway traction motors

• Electric locomotives

• Metro and EMU drive systems

• High-voltage industrial motors

• Wind turbine generators

• Heavy-duty electric drive equipment

• Strict quality control for insulation thickness and dielectric strength

• Stable supply capability for railway projects

• OEM customization supported

• Competitive factory pricing for bulk procurement

• Technical support for motor bearing selection

Q1: What does C4 clearance mean?
A: C4 clearance provides greater internal radial clearance than C3, suitable for high-temperature and high-speed motor applications.

Q2: What is the function of insulated bearings in railway motors?
A: Insulated bearings prevent stray electrical current from damaging the bearing surfaces, extending operational life.

Q3: Do you support OEM marking and packaging?
A: Yes. GQZ Bearing supports laser marking, custom packaging, and project-based customization.