Ball Bearing 6208

Ball Bearing 6208: High-Performance Deep Groove Ball Bearing for Industrial Applications

When your equipment demands reliable rotational performance, the Ball Bearing 6208 delivers proven engineering excellence. As a metric single-row deep groove ball bearing in the 6200 light series, this bearing meets ISO 15:2017 dimensional standards with precise 40mm bore, 80mm outer diameter, and 18mm width specifications. The product solves critical industry challenges by supporting substantial radial loads combined with moderate axial loads in both directions, even at high speeds. Unlike complex angular contact bearings, the 6208 design simplifies mounting assembly while reducing overall production costs.

Engineering Design and Performance

Structure and Working Principle

The deep groove ball bearing features a simple yet effective design consisting of inner ring, outer ring, steel balls, and cage assembly. The deep raceway grooves provide optimal ball guidance and enable the bearing to handle both radial and axial loads simultaneously. Point contact between balls and raceways minimizes friction while maximizing load distribution across the contact zone.

Load Capacity and Speed Performance

This bearing configuration supports radial loads up to 29.1 kN dynamic rating while accommodating bidirectional axial loads. Speed capabilities reach 11,000-13,000 RPM with oil lubrication, making it suitable for high-speed industrial applications. The optimized internal geometry maintains stable operation across varying load conditions.

Material Properties and Durability

Manufactured from GCr15 chrome steel with 60-64 HRC hardness through vacuum degassing and controlled heat treatment. This material specification ensures high fatigue resistance and extended service life under demanding operating conditions. The precision grinding process achieves surface finishes that minimize wear and noise generation.

Primary Applications

Industrial Motors and Pumps

The Ball Bearing 6208 excels in 10-40 HP electric motors where thermal expansion and high rotational speeds demand reliable performance. C3 internal clearance accommodates thermal growth while maintaining proper load distribution. Vibration levels typically remain below 35dB, meeting industrial noise requirements.

Agricultural Machinery

In transmission components for combines and balers, the 2RS sealed version prevents dust, chaff, and moisture ingress. The contact seals retain lithium-base grease while excluding contaminants, extending service intervals in harsh field conditions. Radial load capacity handles belt tensions and gear forces effectively.

Automotive Applications

Generator and compressor applications benefit from the bearing's ability to withstand belt tension loads and elevated engine compartment temperatures. High-temperature polyurea grease prevents lubricant degradation, ensuring consistent performance throughout service life.

Configuration Options

Seal Configurations

• Open (No Suffix): Maximum speed capability with external sealing
• ZZ (Metal Shields): Protection against solid contaminants with grease retention
• 2RS (Rubber Seals): Complete sealing for contaminated environments

Internal Clearance Classes

• CN (Normal): Standard applications with moderate temperature rise
• C3 (Loose): High-temperature operations requiring thermal expansion accommodation
• C4 (Extra Loose): Extreme temperature or interference fit applications

Cage Materials

• Steel Stamped: Cost-effective standard configuration
• Machined Brass (M): Enhanced durability for demanding applications
• Polyamide (TN): Reduced noise and improved lubrication retention

Quality and Manufacturing Standards

Our 30-year bearing manufacturing experience ensures consistent quality through comprehensive testing protocols. Each product undergoes vibration testing, dimensional verification, and load capacity validation. The three-level quality control system maintains over 99.9% qualification rates through raw material inspection, in-process monitoring, and finished product verification.

Supply and Customization

Standard inventory enables 48-hour delivery for regular orders, while custom specifications follow our streamlined 7-day production schedule. OEM customization accommodates specific dimensional, material, or performance requirements. Our integrated supply chain ensures reliable availability for both prototype quantities and production volumes.

Technical Support Services

Our engineering team provides application analysis, installation guidance, and maintenance recommendations. On-site mapping services address retrofit applications where original specifications are unavailable. Comprehensive technical documentation supports proper Ball Bearing 6208 selection and implementation.

For detailed application engineering or custom specifications, contact our technical team at auto@lyautobearing.com. Our bearing specialists assist with selection optimization and provide samples for application validation.