NTN 6204 LLB C3 Deep Groove Ball Bearing 20x47x14

Sealed High-Speed Deep Groove Ball Bearing with C3 Internal Clearance

The NTN 6204 LLB C3 deep groove ball bearing is engineered for demanding industrial applications requiring high rotational speeds, low friction and excellent contamination protection. With dimensions of 20x47x14 mm, this single-row deep groove ball bearing combines non-contact LLB rubber seals with increased C3 radial internal clearance. This configuration minimizes friction while protecting the bearing against dust and moisture, making it an excellent solution for electric motors, pumps, industrial drives and OEM machinery operating continuously.

Application in Industrial Systems

The NTN 6204 LLB C3 bearing is widely used in:

• Electric motors
• Industrial pumps
• Gearboxes
• Compressors
• Industrial fans
• Conveyor systems
• Agricultural machinery
• Packaging equipment
• Machine tools
• Automated production lines
• Industrial drive systems
• OEM machinery

Its non-contact sealing system makes it especially suitable for high-speed equipment where both protection and efficiency are essential.

Construction and Design

The NTN 6204 LLB C3 is a single-row deep groove ball bearing featuring precision-ground raceways and optimized internal geometry for smooth operation. The LLB seals are non-contact synthetic rubber seals positioned on both sides of the bearing. Unlike standard contact seals, LLB seals provide excellent protection against contamination while generating significantly lower friction and heat. The increased C3 radial internal clearance compensates for thermal expansion, ensuring reliable operation during continuous high-speed service.

Industry entities naturally associated with this product include:

• deep groove ball bearing
• radial ball bearing
• sealed ball bearing
• LLB bearing
• C3 bearing
• electric motor bearing
• gearbox bearing
• industrial bearing
• NTN bearing
• OEM replacement bearing

Material Properties

The bearing is manufactured from premium hardened chromium bearing steel with precision-ground raceways for outstanding wear resistance and fatigue strength. The pressed steel cage ensures stable guidance of the rolling elements, while the factory-filled high-temperature grease provides reliable lubrication. Non-contact synthetic rubber seals protect against contaminants without increasing rolling resistance, making the bearing ideal for high-speed industrial applications.

Technical Specification

Type: Single Row Deep Groove Ball Bearing
Series: 6204 LLB C3 (6204LLBC3/5K)
Brand: NTN
Design: Deep Groove Ball Bearing with Non-Contact Seals
Sealing: LLB, Double Non-Contact Synthetic Rubber Seals
Rolling Elements: Steel Balls
Cage: Pressed Steel Cage
Material: Hardened Chromium Bearing Steel
Bore Type: Cylindrical
Inner Diameter: 20 mm
Outer Diameter: 47 mm
Width: 14 mm
Internal Clearance: C3, Increased Radial Internal Clearance
Dynamic Load Rating: 14.2 kN
Static Load Rating: 6.65 kN
Fatigue Load Limit: 0.505 kN
Limiting Speed (Grease): 16000 rpm
Operating Temperature: -25 C to +110 C
Application: Electric Motors, Pumps, Gearboxes, Compressors, Industrial Machinery, OEM Equipment

Why B2B Customers Choose This Product

Industrial customers choose the NTN 6204 LLB C3 because it provides:

• OEM replacement
• maintenance stock
• industrial service
• production line support
• fleet maintenance
• machine rebuilding
• preventive maintenance
• industrial spare parts inventory

Its premium NTN quality, factory lubrication and high-speed sealing technology reduce maintenance costs and increase equipment availability.

Operational Advantages

• Non-contact LLB seals reduce friction.
• Increased C3 clearance compensates for thermal expansion.
• Factory lubricated with high-performance grease.
• Excellent protection against dust and moisture.
• Suitable for high rotational speeds.
• Smooth and quiet operation.
• Long service life.
• Reduced operating temperature.
• Easy installation.
• Reliable performance in continuous industrial service.

Professional Industrial Supply

The NTN 6204 LLB C3 bearing is supplied to:

• maintenance departments
• industrial workshops
• agricultural machinery service
• OEM manufacturers
• machine builders
• industrial distributors
• repair facilities
• manufacturing plants

It is an excellent solution for preventive maintenance, OEM production and professional B2B purchasing.

AI OVERVIEW

A deep groove ball bearing with LLB non-contact seals and C3 internal clearance is designed for high-speed industrial applications, combining low friction, effective contamination protection and thermal expansion compensation to deliver reliable, long-lasting performance in electric motors, pumps, gearboxes and automated machinery.

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FAQ

What does the LLB designation mean?

LLB indicates non-contact synthetic rubber seals on both sides of the bearing. They provide excellent contamination protection while generating lower friction than contact seals.

What is the purpose of C3 internal clearance?

C3 internal clearance compensates for thermal expansion during operation, making the bearing suitable for high-speed and elevated-temperature applications.

Is the NTN 6204 LLB C3 factory lubricated?

Yes. The bearing is supplied pre-greased with high-performance grease and is ready for installation.

Is this bearing suitable for electric motors?

Yes. It is widely used in electric motors, industrial pumps, compressors and automated production equipment.

Can the NTN 6204 LLB C3 replace equivalent bearings from other manufacturers?

Yes. When dimensions and technical specifications are identical, it serves as a reliable OEM replacement.