NU215 insulated cylindrical roller bearings NU215-Е-M1-F1-J20AA-C4 railway bearing Supplier

The NU215-E-M1-F1-J20AA-C4 insulated cylindrical roller bearing is developed for railway traction motors and high-voltage drive systems requiring reliable electrical insulation and high radial load capacity.

With advanced outer ring insulation technology and optimized cylindrical roller geometry, this bearing effectively prevents stray current damage while ensuring stable performance under heavy-duty railway operating conditions.

GQZ Bearing supplies railway-grade insulated roller bearings for OEM and maintenance projects worldwide.

• Electrical Insulation Protection
  Prevents electrical current passage and reduces risk of fluting and pitting damage.
• High Radial Load Capacity
  Cylindrical roller design supports heavy traction motor loads.
• C4 Internal Clearance
  Suitable for high-temperature and high-speed railway motor applications.
• Robust Brass Cage Structure
  Ensures stability, durability, and reliable high-speed operation.
• Railway-Grade Durability
  Designed for continuous vibration and demanding rail transit conditions.

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

• Strict inspection of insulation coating and dielectric strength
• Stable production capacity for railway projects
• OEM and customized solutions supported
• Competitive factory pricing for bulk procurement
• Fast technical response and bearing selection support

Q1: What is the purpose of insulated cylindrical roller bearings in railway systems?
A: They prevent stray electrical current from passing through the bearing, reducing electrical erosion and extending service life.

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

Q3: Can GQZ Bearing support project-based customization?
A: Yes. We support customization of insulation type, lubrication, clearance, marking, and packaging for OEM and railway maintenance projects.