• Household and Personal Care Appliance Motors
• Cooling Fans for Electronics and IT Equipment
• Office Automation Drives (Printers, Scanners)

• Small AC/DC Motors and Micro Gearmotors
• Servo and Stepper Motors in Automation
• Encoder and Sensor Support Bearings

• Dental and Laboratory Handpiece Drives
• Diagnostic and Analysis Instrumentation
• Optical and Positioning Devices

• Automotive Actuators and Small Pump Motors
• E-Bike and Personal Mobility Drive Supports
• Dashboard and Control Module Mechanisms

01. Ultra-Thin, Space-Saving Design

At just 7 mm in width, this bearing offers a significant reduction in axial space and overall weight, enabling exceptionally compact and lightweight product designs ideal for size-constrained applications.

02. Precision Performance in Slim Profile

Manufactured from precision-ground chrome steel with optimized internal geometry, it ensures smooth operation characterized by low noise, minimal vibration, and reliable performance even within tightly confined spaces.

03. Integrated Rubber Seal Protection

Two rubber contact seals (2RS) are integrated to provide effective defense against dust, moisture, and contaminants. This design helps extend service life and maintain performance in challenging or unclean environments.

Interchange Part Numbers

Common manufacturer equivalents include:

• SKF: 6903-2RS
• NSK: 6903DDU
• FAG: 6903-2RSR
• NTN: 6903LLU
• KOYO: 6903LLB

Design & Configuration

The 6903-2RS features dual rubber contact seals as standard, offering reliable protection against light moisture, dust, and incidental contact. This configuration is particularly well-suited for precision equipment and compact assemblies. Where ultra-high-speed operation is required in controlled, debris-free environments, a double metal-shielded variant (6903-ZZ) is available to minimize rotational torque.

"A precision-engineered bearing solution for miniature drives, handheld tools, and confined mechanical assemblies where maintaining a low profile and protecting internal components from contamination are equally critical."