Precision Ball Bearings for Precision Machinery

Application

Application Challenges

Rotational Accuracy

Low radial and axial runout are required to maintain machining, positioning or measuring accuracy.

Rigidity & Positioning

The bearing arrangement must resist displacement under radial and axial loads.

Low Friction & Heat

Friction and temperature rise may affect dimensional stability and long-term accuracy.

Speed Stability

Precision machinery often requires stable speed with limited vibration and torque fluctuation.

Long-term Reliability

Accuracy must remain stable through repeated cycles and continuous operation.

Products

Recommended Precision Ball Bearings

618/619 Series Deep Groove Ball Bearings

Compact cross-section, low friction and stable radial load support. Suitable for applications requiring large bore, low torque and smooth rotation.

718/719 Series Angular Contact Ball Bearings

High precision, axial rigidity and combined load support. Suitable for matched arrangements, preload and accurate shaft positioning.

Selection

Selection Information

01

Information Customers Can Provide

Equipment type and bearing position
Existing bearing brand and number
Inner diameter / outer diameter / width
Radial load and axial load
Operating speed and duty cycle
Required radial and axial runout
Lubrication method and operating temperature
Drawing, photo or sample information

02

CHG Assessable Content

Suitable bearing series and structure
Bearing dimensions and replacement compatibility
Precision class and runout direction
Internal clearance or preload
Bearing arrangement and contact angle
Shaft/housing fits and mounting requirements
Lubrication and operating temperature
Technical proposal, quotation and delivery

ADVANTAGES

Why Choose CHG

Precision Series Capability

CHG provides 618/619 deep groove and 718/719 angular contact precision ball bearing solutions for large-bore and compact applications.

Application-based Selection

Bearing structure can be reviewed according to speed, load, accuracy, rigidity, noise, temperature and mounting conditions.

Custom Manufacturing

Custom support by bearing number, dimensions, 2D/3D drawing, sample information or replacement requirements.

Quality & Inspection Support

Material certificates, dimensional inspection, precision inspection, product photos and packing photos can be provided according to order requirements.

High-speed Spindles

Precision Rotary Systems

Industrial Equipment

High-precision Transmission Equipment

CONTACT US

Talk to an expert

Share your requirements and we’ll help you find the right solution for your business.

Get a quick quote

We typically confirm within 24 hours.

FAQ

Precision Ball Bearings for Precision Machinery FAQ

Please provide the application, bearing number or dimensions, radial and axial loads, speed, precision or runout requirement, lubrication, quantity and drawing if available.

CHG provides 618/619 series deep groove ball bearings and 718/719 series angular contact ball bearing solutions.

Yes. Replacement and custom solutions can be reviewed according to bearing numbers, dimensions, 2D/3D drawings, samples or application requirements.

618/619 deep groove ball bearings are commonly used for low-friction radial support, while 718/719 angular contact ball bearings are suitable for combined loads, axial rigidity, preload and precise positioning.

Dimensional inspection, precision inspection, material certificates, product photos and packing photos can be provided according to order requirements.

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