Product Structure

The U693ZZ is an ultra-thin series stainless steel deep groove ball bearing with a 9mm inner diameter, 17mm outer diameter, and 5mm width, featuring double-sided metal shields. Known for its corrosion resistance, dust protection, and thin profile, it is an ideal choice for applications such as micro motors, precision instruments, and office equipment. When selecting, the specific application environment (corrosiveness, speed, load) should be considered to decide whether to use the stainless steel U693ZZ or the standard steel 693ZZ.

Key Performance Features of U693 ZZ

Based on its structure and material, the U693ZZ bearing offers the following notable characteristics:

• Excellent Corrosion Resistance: The stainless steel material allows it to adapt to damp, humid, or other mildly corrosive environments, preventing rust and extending service life.

• Thin Design: The ultra-thin series makes it highly suitable for applications with limited radial space.

• Effective Dust Protection: The double-sided metal shields (ZZ) provide good dust protection, making it suitable for use in dusty environments.

• Low Maintenance: It is typically pre-lubricated with grease in a "maintenance-free" design, requiring no additional lubrication under normal operating conditions.

• Moderate Speed Capability: Due to the metal shields, its maximum speed is generally lower than that of bearings with non-contact seals (e.g., RS) or open-type bearings, but it still meets the requirements of most small and medium-sized equipment.

• Moderate Load Capacity: Deep groove ball bearings primarily handle radial loads and can withstand certain bidirectional axial loads. However, due to their thin design, their load capacity is relatively lower compared to standard series bearings.

Main Application Scenarios

U693ZZ-type miniature stainless steel bearings are widely used in various precision instruments and small devices, such as:

• Micro Motors: Examples include small DC motors, stepper motors, and massager motors.
• Office Equipment: Paper feed roller shafts in printers, copiers, and scanners.

• Instruments and Meters: Measuring instruments, optical equipment, and encoders.

• Models and Toys: Transmission parts in remote-control cars and aircraft models.

• Medical Equipment: Small, precision medical instruments and devices (verification of medical-grade standards is required).

• Food Industry: Applications requiring rust prevention and easy cleaning under light load conditions (verification of food-grade grease is also required).

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