• High-speed dental handpieces & surgical drills
• Precision laboratory mixing equipment
• Micro medical pumps & drug delivery devices
• Orthopedic power tools & bone saws

• RC car wheel hubs & steering assemblies
• Drone propeller shafts & gimbal systems
• Printer & copier roller mechanisms
• Scanner & fax machine drive units

• Miniature pneumatic cylinders & valves
• Small robotic arm joints & grippers
• Linear actuator guide wheels
• Precision pick-and-place nozzles

• Miniature DC coreless motors
• Small axial & centrifugal cooling fans
• Stepper motor rotor supports
• Handheld power tool armatures

01. Compact & Space-Efficient Design

The defining feature of the 673-ZZ is its minimal cross-section. With an ultra-thin width of just 2.5mm, this bearing is specifically designed for assemblies with severe space constraints. It allows engineers to incorporate rolling-element performance into designs where sleeve bearings might otherwise be the only option, providing the benefits of reduced friction and higher precision in a tiny package.

02. Lightweight & Low-Torque Operation

As a single-row miniature bearing, the 673-ZZ is optimized for light-load applications. Its small ball complement and precise raceway finishing ensure extremely low starting and running torque. This efficiency is vital for battery-powered devices and high-speed instruments where every watt of energy and gram of weight savings contribute to overall performance and longevity.

03. High-Speed Capability with Low Noise

Manufactured to fine precision tolerances, these miniature bearings ensure minimal vibration and audible noise. The non-contact metal shields (ZZ) allow for very high rotational speeds without drag, while still protecting the precision balls and raceways from contamination. This makes the 673-ZZ suitable for sensitive applications like small spindles and dental tools where quiet, smooth rotation at high RPM is essential .

Interchange Part Numbers

Direct replacement for industry-standard miniature bearings:

• SKF: DDC673ZZ
• NSK: 673ZZ
• FAG: 673.2Z
• NTN: 673ZZ
• KOYO: 673ZZ
• TIMKEN: 673ZZ
• MRC: 673ZZ

Design & Configuration

The 673-ZZ is furnished with double pressed steel shields as standard, offering the best balance of protection and low torque for high-speed miniature applications. For scenarios demanding absolute isolation from liquid or fine dust, configurations with contact rubber seals (e.g., 673-2RS) may be available upon inquiry. Stainless steel (AISI 440C) variants are also available for corrosive environments .

"From the precision requirements of medical devices to the speed of hobbyist drones, the 673-ZZ delivers robustness and performance in the industry's most compact standardized package."