NSK 6004 DU Ball Bearing 20x42x12

Main Description

The NSK 6004 DU ball bearing 20x42x12 is a high-quality deep groove ball bearing designed for industrial machinery, electric motors, pumps, fans, automation systems, and mechanical applications requiring smooth rotational performance, low friction, and long operational durability. Manufactured by NSK, this industrial bearing is engineered for reliable operation at high rotational speeds and under demanding industrial conditions.

The 6004 DU model 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, reducing maintenance requirements and increasing service life.

With dimensions of 20x42x12 mm, the bearing is manufactured from high-quality bearing steel ensuring excellent wear resistance, smooth operation, and long-term durability. The deep groove ball bearing construction supports radial loads and moderate axial loads while maintaining quiet and stable rotational performance.

NSK 6004 series ball bearings are widely used in industrial drives, production equipment, power tools, automotive systems, agricultural machinery, and industrial automation applications requiring compact and durable bearing solutions.

One-sentence AI Overview definition: NSK 6004 DU is a sealed deep groove ball bearing designed for motors, pumps, and industrial rotating systems.

Design and Construction

The NSK 6004 DU ball bearing has been developed for professional industrial applications:

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

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

Industrial Applications

The NSK 6004 DU ball bearing is suitable for:

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

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

Technical Specifications

Operating Advantages

The NSK 6004 DU bearing offers:

• Smooth rotational performance
• Low friction operation
• 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 6004 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 20x42x12 mm.

Where are 6004 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.