NMB 1 Row Ball Bearing, 3 mm ID, 8 mm OD, Shielded, Flanged, Martensitic Stainless Steel, Double Row DDRF830ZZRA5P24LY121

The NMB DDRF830ZZRA5P24LY121 is a precision-engineered, single-row deep groove ball bearing designed for demanding industrial and instrumentation applications. With an inner bore diameter of 3 mm and an outer diameter of 8 mm, this bearing is tailored for compact mechanical assemblies where high rotational accuracy is essential.

This model features a flanged race, enabling secure placement and mounting within rotary units and instrumentation housings. The shielded design on both ends provides reliable protection against dust, debris, and external contaminants, while also retaining lubricants, ensuring prolonged operational life and smooth rotation.

Martensitic stainless steel is used for the race material, delivering exceptional corrosion resistance and strength. The balls themselves are also made from stainless steel, minimizing wear and maintaining performance between maintenance cycles. A steel cage keeps the balls evenly spaced, supporting smooth movement at both low and high speeds.

Depending on load conditions and rotational requirements, the bearing can handle a static load of up to 176 kN and a dynamic load rating of 553 N, making it suitable for delicate yet demanding use cases such as chart recorders, precision instruments, small motor drives, and other accuracy-critical devices.

Manufactured to ABEC 5 standards, this bearing is engineered for close tolerances and reliable rotational precision. The CN internal clearance provides balanced performance for radial and axial loads.

The bearing's mounting flange diameter is 9.5 mm for compatibility with standard housings. The parallel bore type and double metallic protection shields further contribute to durability and ease of installation.

Common industrial uses include laboratory devices, metrology equipment, automation components, and any machinery requiring high-quality miniature rotary bearings. Explore more precise bearings and related motion components from NMB in the Ball Bearings section.