NSK 6303CM Deep Groove Ball Bearing

Description

The NSK 6303CM is a high-quality, single-row deep groove ball bearing. It is an open-type bearing, meaning it does not have seals or shields, making it suitable for applications where it will be housed in a sealed environment or where regular lubrication is applied. The 'CM' designation specifies a normal radial internal clearance (CN) and is specifically engineered for electric motor applications, ensuring low noise and vibration levels.

Specifications

• Manufacturer: NSK
• Type Number: 6303CM
• Product Type: Deep Groove Ball Bearing
• Bore Diameter (d): 17 mm
• Outer Diameter (D): 47 mm
• Width (B): 14 mm
• Sealing: Open (No seals)
• Cage Material: Pressed Steel
• Radial Internal Clearance: CN (Normal) for Electric Motors

Label Info

• Brand: NSK Bearings
• Model: 6303CM
• Barcode Data: 002917 6016387

Application

This bearing is ideal for a wide range of applications, especially in electric motors, pumps, fans, and general industrial machinery where high rotational speeds and low friction are required.

Country of Origin

This product is Made in Poland.

CO2 Impact

By purchasing this pre-owned bearing, you are contributing to a circular economy and helping to prevent 0.22 kg of CO2 emissions that would have been generated from manufacturing a new one.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

The 'CM' suffix indicates a special bearing for electric motors. It signifies a normal (CN) radial internal clearance and construction that ensures low noise and low vibration performance, which is critical in motor applications.

Yes, as an open-type bearing, it is well-suited for high-speed applications. The absence of contact seals reduces friction, allowing for higher rotational speeds compared to sealed bearings. Proper lubrication is essential to achieve maximum speed and lifespan.

Absolutely. Open bearings are designed to be lubricated with either grease or oil. The choice depends on the specific application's speed, load, and operating temperature. For most general-purpose applications, a good quality lithium-based grease is suitable.

PLC2DAY 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. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.

Last Update: Friday, March 13, 2026