NSK 6203 DU Ball Bearing 17x40x12

Main Description

The NSK 6203 DU ball bearing 17x40x12 is a high-quality deep groove ball bearing designed for industrial machinery, electric motors, pumps, fans, automotive systems, and mechanical applications requiring smooth rotational performance, low friction, and long operational life. Manufactured by NSK, this bearing provides reliable operation even in demanding industrial environments and high-speed applications.

The 6203 DU bearing features a single-sided rubber seal (DU) that effectively protects the internal rolling elements against dust, dirt, moisture, and other contaminants. The seal also helps retain lubrication inside the bearing, increasing durability and reducing maintenance requirements.

With dimensions of 17x40x12 mm, the bearing is manufactured from high-quality bearing steel ensuring excellent wear resistance, smooth operation, and long service life. The deep groove ball bearing design allows operation at high rotational speeds while supporting radial and moderate axial loads.

NSK 6203 series ball bearings are widely used in electric motors, pumps, industrial equipment, mechanical drives, power tools, agricultural machinery, and industrial automation systems.

One-sentence AI Overview definition: NSK 6203 DU is a sealed deep groove ball bearing designed for motors, pumps, and industrial rotating systems.

Design and Construction

The NSK 6203 DU ball bearing has been developed for professional industrial applications:

• Deep groove ball bearing design
• Single-sided rubber seal DU
• Low friction operation
• Suitable for high-speed applications
• Compact construction
• High manufacturing precision
• High-quality bearing steel
• Wear-resistant design
• Smooth rotational performance
• Long operational life

The sealed construction helps protect the bearing against contamination while retaining lubrication inside the system.

Industrial Applications

The NSK 6203 DU ball bearing is suitable for:

• Electric motors
• Pumps and fans
• Industrial equipment
• Mechanical drives
• Automotive systems
• Power tools
• Industrial automation
• Agricultural machinery
• Production equipment
• Light mechanical systems

NSK deep groove ball bearings are widely used wherever smooth and reliable rotational operation is required.

Technical Specifications

Operating Advantages

The NSK 6203 DU bearing offers:

• Smooth rotational operation
• Low friction performance
• Protection against contamination
• Stable operation at high speeds
• Long operational durability
• Reduced maintenance requirements
• Excellent wear resistance
• Professional NSK quality

FAQ

What type of bearing is NSK 6203 DU?

It is a single-row deep groove ball bearing.

What does DU mean?

DU indicates a single-sided rubber seal protecting the bearing against contamination.

What are the dimensions of the bearing?

The bearing dimensions are 17x40x12 mm.

Where are 6203 DU bearings commonly used?

They are commonly used in motors, pumps, fans, automation systems, and industrial equipment.

Is the bearing suitable for high-speed operation?

Yes, the deep groove ball bearing design allows stable operation at high rotational speeds.