NSK 6203DDUCM Deep Groove Ball Bearing

Description

The NSK 6203DDUCM is a precision-engineered single-row deep groove ball bearing, designed for high performance and durability. It is equipped with DDU contact seals on both sides, providing excellent protection against dust and moisture ingress while effectively retaining grease. The 'CM' designation specifies a radial internal clearance optimized for electric motor applications, which contributes to lower noise and vibration levels during operation.

Specifications

• Bore Diameter (d): 17 mm
• Outside Diameter (D): 40 mm
• Width (B): 12 mm
• Seals: DDU (Contact Rubber Seals, Both Sides)
• Internal Clearance: CM (For Electric Motors)
• Material: High-quality bearing steel

Label Info

• Model: 6203DDUCM
• Grease Code: D NS7S5
• Batch Codes: 029176, C64098

Application

This bearing is ideal for a wide array of applications, particularly where reliability and low noise are critical. Common uses include electric motors, pumps, fans, gearboxes, and other general industrial machinery.

Country of Origin

Made in Poland.

CO2 Impact

By purchasing this pre-owned bearing, you are contributing to a circular economy and have prevented the emission of approximately 0.13 kg of CO2. This saving is equivalent to the energy needed to fully charge a smartphone more than 15 times.

Availability

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

FAQ

Question?
What does the 'DDU' suffix mean on an NSK bearing?

Answer: The 'DDU' suffix indicates that the bearing is fitted with contact-type rubber seals on both sides. These seals ride on the inner ring, providing a highly effective barrier against contaminants and ensuring excellent grease retention, which is crucial for long service life.

Question?
What is the significance of the 'CM' clearance for this bearing?

Answer: 'CM' clearance is a special radial internal clearance specified by NSK for electric motor applications. It is a tighter tolerance range within the standard CN (Normal) clearance, designed to reduce noise and vibration, leading to quieter and smoother motor operation.

Question?
Is the NS7S5 grease suitable for high-temperature applications?

Answer: NS7S is a proprietary NSK grease. While it offers excellent performance for general-purpose and electric motor applications, its standard operating temperature range is typically around -30 deg C to +110 deg C. For applications consistently exceeding this range, a specific high-temperature bearing and grease combination would be recommended.

Last Update: Friday, March 13, 2026

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