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
618 vs. 619 Series – Performance Comparison
Feature | 618 Series | 619 Series |
---|---|---|
Size Range | ID 10–950 mm, OD 19–1,250 mm | ID 10–950 mm, OD 22–1,250 mm |
Load Capacity | Radial + single-direction axial load, high-speed | Same, optimized for spindle performance |
Noise & Friction | Ultra-low friction, smooth & quiet | Same low-noise characteristics |
Precision Application | For general-purpose precision applications | Focused on rotational accuracy and spindle use |
Custom Options | Hybrid ceramic, stainless steel, sealed versions | Customizable 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.
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