NMB 1 Row Double Row Deep Groove Ball Bearing 4 mm Inside Diameter, 8 mm Outside Diameter, Shielded DDL-840ZZHA1P25LY121

NMB DDL-840ZZHA1P25LY121 is a 1 row double row deep groove ball bearing with an inside diameter of 4 mm, outside diameter of 8 mm, and a race width of 3 mm. It features shielded ends providing protection from dust and debris, making it suitable for precision industrial applications.

The bearing races are made from martensitic stainless steel for enhanced corrosion resistance and strength. Stainless steel balls and a steel cage provide durability and high reliability under continuous usage conditions.

This ball bearing is designed with a parallel bore type and plain race type, which aids in accommodating combined radial and axial loads. Internal clearance class CN ensures controlled radial play for optimal performance balance.

With a static load rating of 140 kN and a dynamic load rating of 391 N, it handles demanding load conditions in machinery and instruments efficiently. Typical applications include use in precision instruments, chart recorders, industrial machinery, and other environments that require reliable, low-friction rotary bearings.

Constructed with martensitic stainless steel race material for superior corrosion resistance. Stainless steel balls improve longevity and performance. Steel cage ensures structural stability in high-speed rotations. Shielded end type protects rolling elements from contamination for extended bearing life.

Suitable for industrial, manufacturing, and scientific instrumentation applications. This product is a new condition NMB ball bearing, model DDL-840ZZHA1P25LY121, providing precise and durable rotational support essential for mechanical systems.

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