• High-Speed Dental Turbine Handpieces
• Surgical Drill Systems
• Precision Bone Saw Oscillators
• Micro-Tissue Processing Equipment

• Laser Scanning Mirrors
• Spectrophotometer Rotating Stages
• Micro-Centrifuge Rotors
• Precision Galvanometer Systems

• Coreless DC Motor Supports
• Miniature Encoder Assemblies
• Precision Timing Mechanisms
• Micro-Pump Rotors

• Pneumatic Valve Actuators
• Precision Flow Controllers
• Small Diameter Pulley Systems
• Micro-Robotic Joint Mechanisms

01. Integrated Contamination Protection

The 671-2RS incorporates double nitrile rubber contact seals that provide effective labyrinth-style protection against dust, moisture, and microscopic debris. This sealing configuration extends bearing service life in environments where particulate exposure would rapidly degrade unprotected bearings, while the factory-packed premium grease ensures consistent lubrication throughout the operational lifespan.

02. Space-Optimized Load Carrying Capacity

Despite its minimal cross-section, this bearing delivers useful load capacity through optimized internal geometry and high-grade bearing steel construction. The deep groove raceway design maintains ball conformity that efficiently distributes applied loads, making it suitable for applications where bearing size is constrained but predictable rotational performance cannot be compromised.

03. Low-Torque Sealing Technology

The contact seal design incorporates advanced lip geometry that minimizes frictional torque while maintaining effective sealing action. This engineering balance ensures that the 671-2RS retains the high-speed capability expected from miniature bearings while providing the protection required for extended, maintenance-free operation in permanently assembled equipment.

Interchange Part Numbers

Direct replacement and cross-reference for industry standard part numbers:

• SKF: 671-2RS
• NSK: 671DDU
• FAG: 671.2RS
• NTN: 671LLU
• KOYO: 671-2RS
• TIMKEN: 671-2RS

Design & Configuration

The 671-2RS platform offers several configuration possibilities to address specific application requirements:

• Standard 671-2RS: Double contact seals with premium lithium-based grease for general purpose instrumentation and medical device applications requiring balanced protection and low torque.

• Stainless Steel 671-2RS (440C): Enhanced corrosion resistance for medical sterilization cycles, food processing equipment, or marine environment exposure while maintaining sealing integrity.

• High-Temperature Variant: Special fluorinated grease and viton seals for applications exceeding standard nitrile temperature limits.

• Low-Torque Variant: Optimized seal lip geometry and low-viscosity grease for applications where frictional losses must be minimized, such as precision metering mechanisms.

• Extended Clearance (C3): Accommodates thermal expansion differentials in applications with non-uniform housing or shaft materials.

"For dental surgical systems, precision laboratory centrifuges, and miniature drive trains requiring long-term reliability without maintenance intervention, the 671-2RS delivers protected precision in an ultra-compact envelope. Select stainless steel material specification for applications requiring regular sterilization or exposure to corrosive environments."