R2ZZ Inch Size Mini Bearing

R2ZZ inch-sized miniature bearings are single-row deep groove ball bearings. Crafted from chrome steel for both inner and outer rings as well as balls, they feature dual-sided metal dust shields to block contaminants and retain lubricant. With an ABEC-1 precision rating, these bearings offer low friction and high rotational speeds. They are suitable for compact equipment requiring limited installation space and operational reliability, such as drones, model vehicles, and precision instruments.

Technical parameter:

The structural features of R2ZZ inch-sized miniature bearings revolve around miniaturized design, adaptable protection, and optimized core components, specifically as follows:

1. Compact Miniaturized Core Structure

Features a classic deep groove ball design comprising “inner ring + outer ring + single row of small-diameter balls + thin-walled cage.” This compact configuration accommodates stringent installation space constraints in inch-sized applications. The deep groove raceway design simultaneously handles radial loads and limited bidirectional axial loads.

2. Dual-Side Metal Dust Shield Protection

Integrated metal dust shields on both sides form a non-contact sealing structure. This design effectively blocks dust, debris, and other contaminants from entering the interior, preventing wear on balls and raceways while minimizing grease loss. It imposes no additional operational friction resistance, making it suitable for low-friction, high-speed applications.

3. High-Precision Material and Component Matching

The inner ring, outer ring, and balls predominantly utilize high-hardness chrome steel for structural strength and wear resistance. The cage employs thin-walled metal or engineering plastic to precisely separate the balls and stabilize their movement trajectory. Combined with ABEC-1 precision grade machining standards, this ensures overall rotational accuracy and operational stability.