NSK 6203DDUCM NS7S

NSK 6203DDUCM NS7S Deep Groove Ball Bearing Description This is a high-performance single-row deep groove ball bearing from NSK’s HPS (High Performance Standard) series. The 6203DDUCM NS7S is engineered for applications demanding high reliability and long operational life. It features DDU contact seals on both sides, providing excellent protection against contamination and moisture ingress. The CM radial internal clearance makes it particularly suitable for use in electric motors and other applications where reduced operational noise and vibration are critical. Specifications Manufacturer: NSK Part Number: 6203DDUCM NS7S Type: Single-Row Deep Groove Ball Bearing Bore Diameter (d): 17 mm Outer Diameter (D): 40 mm Width (B): 12 mm Seals: DDU (Contact rubber seals on both sides) Internal Clearance: CM (For electric motors) Grease: NS7S Series: NSKHPS Label Info Brand: NSK Model: 6203+DDUCM NS7S Series: NSKHPS Application Designed for a wide range of industrial applications including electric motors, pumps, gearboxes, fans, and conveyor systems where durability and protection from contaminants are essential. Country of Origin Made in Japan. CO2 Impact By purchasing this refurbished component, you contribute to a circular economy and avoid approximately 0.13 kg of CO2 emissions compared to a new production. This saving is equivalent to charging a smartphone more than 15 times. Availability This item is in stock and ready for dispatch. Order now from profideals for expert support and fast delivery. FAQ What do the suffixes ‘DDU’ and ‘CM’ mean for this NSK bearing? ‘DDU’ indicates that the bearing is fitted with contact rubber seals on both sides, offering excellent protection against dust and moisture. ‘CM’ refers to a specific radial internal clearance range that is optimized for electric motor applications, helping to reduce noise and vibration. Is the NS7S grease suitable for high-temperature applications? NS7S is a high-quality, low-noise grease with a standard operating temperature range, typically from -30 deg C to +110 deg C. For applications exceeding this range, a bearing with a different grease type would be recommended. Can this 6203DDU bearing be used as a direct replacement for a 6203-2Z or 6203-ZZ bearing? Yes, dimensionally it is a direct replacement. However, the sealing is different. A ‘ZZ’ or ‘2Z’ bearing has non-contact metal shields, which offer less protection against fine dust and moisture than the ‘DDU’ contact seals. For dusty or wet environments, upgrading to a DDU bearing is beneficial. profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026