618 & 619 Series Precision Deep Groove Ball Bearings

618 & 619 Series Precision Deep Groove Ball Bearings
时间:2025-07-09 人气:

The 618 and 619 series bearings  are high-performance deep groove ball bearings, designed for high precision, low noise, and high-speed applications. These series are widely used in electric motors, spindle systems, and precision instruments across a variety of industries.


618 Series – Versatile for High-Speed Applications


  • Wide size range: Inner diameter from 10mm to 950mm, outer diameter from 19mm to 1,150mm

  • Flexible load capacity: With optimized internal clearance, it can function similarly to angular contact bearings, supporting high-speed radial and moderate axial loads

  • Low friction and smooth operation: An energy-efficient and quieter solution where thrust bearings are not suitable

  • Typical applications: Ideal for electric motors, robotics, medical equipment, automation platforms, and noise-sensitive environments


619 Series – High-Precision Bearings for Spindle Systems


The 619 series shares many characteristics with the 618 series but is specially optimized for applications requiring ultra-high rotational accuracy, such as:

  • Size range: Inner diameter from 10mm to 950mm, outer diameter from 22mm to 1,250mm

  • Purpose-built for: CNC spindles, rotary tables, direct-drive systems — enhancing rigidity and positioning accuracy

  • Perfect fit for: Hybrid ceramic replacements and cleanroom environments

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618 vs. 619 Series – Performance Comparison



Feature618 Series619 Series
Size RangeID 10–950 mm, OD 19–1,250 mmID 10–950 mm, OD 22–1,250 mm
Load CapacityRadial + single-direction axial load, high-speedSame, optimized for spindle performance
Noise & FrictionUltra-low friction, smooth & quietSame low-noise characteristics
Precision ApplicationFor general-purpose precision applicationsFocused on rotational accuracy and spindle use
Custom OptionsHybrid ceramic, stainless steel, sealed versionsCustomizable in same configurations



CHG Offers Fully Customizable Precision Bearings


CHG provides 618 and 619 series bearings in P6, P5, and P4 precision grades, with customizable options including hybrid ceramic, sealed, corrosion-resistant, and stainless steel materials. These bearings are well-suited for high-performance applications in electric motors, spindle systems, medical devices, and advanced automation platforms.


Contact us


Looking for high-speed, low-noise bearings that can handle both axial and radial loads? Our 618/619 series bearings are your ideal solution.
Contact us now to request product samples, technical advice, or tailored solutions.

Email: info@chg-bearing.com

618 & 619 Series Precision Deep Groove Ball Bearings
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