Bearing 625-ZZSNH (Miniature Deep Groove Ball Bearing)
The 625-ZZSNH miniature deep groove ball bearing is a precision bearing commonly used in the guide rollers and transmission mechanisms of WEDM machines, with a 5mm bore, 16mm outer diameter and 5mm width. ZZ indicates double-side shielding; SNH may denote a specific grease type, cage material or manufacturer internal specification. Made of high-carbon chromium bearing steel with hardening, precision grinding and super-finishing, it achieves dimensional accuracy of P5 or P6 grade for smooth, low-noise rotation. The stamped steel shields with embedded rubber sealing lips effectively isolate external contaminants and moisture, suiting the splash-prone WEDM working environment. With moderate load capacity and high limiting speed, the 625 bearing is a key standard component ensuring long-term stable operation of guide rollers.

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