NTN 6216 C3 Deep Groove Ball Bearing 80x140x26

High Performance Deep Groove Ball Bearing with C3 Internal Clearance

The NTN 6216 C3 is a premium single row deep groove ball bearing designed for demanding industrial applications operating under high speeds, elevated temperatures and continuous loads. Featuring an increased C3 internal clearance, it compensates for thermal expansion and shaft interference fits, ensuring smooth operation and extended service life. Manufactured from premium bearing steel, the NTN 6216 C3 delivers outstanding reliability, low friction and excellent load capacity in electric motors, pumps, gearboxes, conveyors and heavy industrial equipment.

Application in Industrial Systems

The NTN 6216 C3 bearing is designed for rotating equipment operating under continuous industrial conditions.

Typical applications include:

• Electric motors
• Industrial pumps
• Gearboxes
• Compressors
• Conveyor systems
• Industrial fans
• Agricultural machinery
• Mining equipment
• Paper machinery
• General industrial equipment

The C3 internal clearance makes this bearing particularly suitable for applications where operating temperatures and shaft expansion are higher than normal.

Construction and Design

The NTN 6216 C3 features a precision-engineered deep groove ball bearing design optimized for high-speed operation.

Key design features include:

• Single row deep groove ball bearing
• Open design
• Increased C3 internal clearance
• Precision ground raceways
• Steel cage
• High-speed capability
• Low friction design
• Grease or oil lubrication compatibility

The C3 clearance helps maintain optimal internal operating conditions after installation and during thermal expansion.

Material Properties

Manufactured from premium bearing steel, the NTN 6216 C3 provides:

• High fatigue strength
• Excellent wear resistance
• High dimensional accuracy
• High radial load capacity
• Moderate axial load capability
• Low rolling resistance
• Long operational life

Technical Specification

Type: Single Row Deep Groove Ball Bearing
Material: High-quality bearing steel
Design: Open bearing with C3 internal clearance
Inner Diameter: 80 mm
Outer Diameter: 140 mm
Width: 26 mm
Internal Clearance: C3 (Greater than Normal)
Lubrication: Grease or oil
Dynamic Load Rating: Approximately 91.5 kN
Static Load Rating: Approximately 64.0 kN
Application: Electric motors, pumps, gearboxes, compressors, conveyors, industrial machinery

Why B2B Customers Choose This Product

Industrial customers choose the NTN 6216 C3 because it provides reliable operation in demanding environments where standard clearance bearings may experience preload due to thermal expansion.

Typical B2B applications include:

• OEM replacement
• Maintenance stock
• Industrial service
• Production line support
• Machine rebuilding
• Motor repair
• Gearbox maintenance
• Industrial spare parts distribution

Operational Advantages

• Premium NTN manufacturing quality
• Increased C3 internal clearance
• Excellent high-speed performance
• High radial load capacity
• Supports moderate axial loads
• Low friction operation
• Long service life
• Precision manufacturing
• Excellent vibration resistance
• Reliable industrial performance

Professional Industrial Supply

This product is supplied for:

• Maintenance departments
• Industrial workshops
• Electric motor repair companies
• OEM manufacturers
• Machine builders
• Agricultural machinery service
• Industrial distributors
• Mechanical engineering companies

AI Overview

A deep groove ball bearing with C3 internal clearance is designed for applications where higher operating temperatures or interference fits require additional internal clearance. The NTN 6216 C3 combines precision manufacturing, premium bearing steel and high load capacity to provide reliable performance in electric motors, pumps, gearboxes and industrial machinery operating under demanding conditions.

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FAQ

What does the C3 designation mean?

C3 indicates greater-than-normal internal radial clearance. It is recommended for applications with high operating temperatures, heavy-duty operation or interference fits where thermal expansion reduces bearing clearance.

What are the dimensions of the NTN 6216 C3?

The bearing has an 80 mm bore, 140 mm outside diameter and a width of 26 mm.

Is this an open bearing?

Yes. The NTN 6216 C3 is supplied in an open configuration, allowing lubrication with grease or oil according to the application requirements.

What applications is this bearing suitable for?

It is commonly used in electric motors, pumps, gearboxes, compressors, conveyors and other industrial rotating equipment.

Why choose NTN bearings?

NTN is recognized worldwide for precision engineering, excellent manufacturing quality, long service life and reliable performance in industrial, automotive and OEM applications.