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Precision 6904 Thin Section Deep Groove Ball Bearing (20x45x8) | High-Speed Industrial Grade CR Steel

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Marca: CR
Product Category: Deep Groove Ball Bearing

Product Details

Precision 6904 Thin Section Deep Groove Ball Bearing (20x45x8) | High-Speed Industrial Grade CR Steel

This high-precision 20x45x8 thin-section deep groove ball bearing (DGBB) is engineered under stringent CR standards to deliver superior rotational performance in compact environments. Featuring an 20mm bore, 45mm outer diameter, and a slim 8mm width, this component maximizes efficiency where space and weight are critical constraints. Constructed from premium High-Carbon Chrome Steel (equivalent to AISI 52100), the bearing ensures exceptional hardness, wear resistance, and extended operational life. Its optimized internal geometry and tight running clearances minimize friction and heat generation, supporting high rotational speeds (up to 16,000 RPM under oil lubrication) while maintaining robust capacity for moderate radial and light axial loads. Ideal for upgrading standard assemblies requiring enhanced load performance in a reduced envelope. Designed for demanding industrial applications such as robotic actuators, specialized gearboxes, compact electric motors, and high-precision conveyor rollers, this bearing guarantees reliability and reduces maintenance intervals. The robust construction ensures operational stability even in environments with varying temperatures and moderate contamination. As a Senior Product Manager, we emphasize that this 20x45x8 unit provides a strategic balance of high load ratings and minimized profile, allowing engineers to achieve next-generation compact designs without sacrificing durability or mean time between failures (MTBF). Invest in CR quality for guaranteed performance and maximized uptime.

Key Features

  • Optimized 8mm width facilitates extremely compact design integration.
  • Constructed from high-purity CR Grade Chrome Steel for superior fatigue life.
  • ABEC 3 precision rating ensures smooth running and low operational noise.
  • High dynamic load capacity relative to size, supporting demanding applications.
  • Suitable for high-speed operation in both grease and oil lubricated systems.
  • Standard internal clearance (C3 available upon request) for optimal thermal expansion management.

Technical Specifications

d20 mm
D45 mm
B8 mm
SeriesThin Section 6900
Bearing TypeDeep Groove Ball Bearing (DGBB)
MaterialHigh-Carbon Chrome Steel (CR Grade)
Precision ClassP6 / ABEC 3
Cage TypeStamped Steel
Dynamic Load Rating (Cr)9.1 kN
Static Load Rating (C0r)4.9 kN
Limiting Speed (Grease)14,000 RPM