PrecisionSteelBall.com | High-Precision Steel Balls & Sorting Machines

About HRT Precision

Zhongshan H.R.T. Precision Steel Ball Co., Ltd. is a leading manufacturer of precision steel balls in China. With decades of engineering excellence, we supply high-precision steel balls to industries worldwide, including automotive, aerospace, medical devices, and industrial machinery.

Why Choose HRT?

Patented G5 steel ball sorting technology for unmatched precision
Largest manufacturer in South China with ISO-certified production
Non-kerosene ball sorting process – environmentally safe and efficient
Global distribution with consistent quality control and on-time delivery

Our commitment to innovation and quality has earned us trust from leading OEMs and bearing manufacturers across North America, Europe, and Asia.

Our Product Range

From stainless steel to ceramic, carbon to brass – we manufacture precision balls to meet international standards and custom specifications.

440/440C Stainless Steel Balls

High corrosion resistance, ideal for harsh environments and food-grade applications. Available in G5 to G1000 grades.

316/316L Stainless Steel Balls

Superior chemical resistance and marine-grade durability. Perfect for offshore and medical equipment.

304 Stainless Steel Balls

General-purpose stainless steel with excellent formability and moderate corrosion resistance. Widely used in valves and pumps.

AISI52100 Bearing Steel Balls

High carbon chromium steel for maximum hardness and wear resistance. Standard for ball bearings and industrial rollers.

Ceramic Balls (ZrO2)

Non-conductive, non-magnetic, and highly wear-resistant. Ideal for high-speed and high-temperature applications.

Brass Balls

Excellent machinability and corrosion resistance. Used in plumbing, electrical contacts, and decorative hardware.

1085 Carbon Steel Balls

High strength and hardness. Suitable for tools, fasteners, and industrial components requiring wear resistance.

Plastic Balls (POM, PTFE, Nylon)

Lightweight, chemical-resistant, and low-friction. Used in food processing, chemical handling, and low-load bearings.

Glass Balls

Optically clear, chemically inert. Used in laboratory equipment, flow meters, and decorative applications.

Ball Retainers & Cages

Precision-engineered retainers for ball bearings and linear motion systems. Ensures smooth operation and longevity.

HRT-1201 Roller Sorting Machine

Patented high-efficiency sorting system for G5 to G1000 steel balls. Increases throughput and reduces waste.

Steel Ball Surface Detector

Advanced inspection system for detecting micro-cracks, pits, and surface defects in precision balls.

Why Our Technology Matters

Patented G5 Sorting

Our proprietary roller sorting machine ensures G5 precision – among the highest tolerances in the industry – for consistent performance in critical applications.

Non-Kerosene Process

Environmentally safe manufacturing without kerosene-based cleaning. Reduces VOC emissions and ensures cleaner, safer production.

High Efficiency & Output

Our HRT-1201 and HRT-1202 machines deliver up to 30% higher throughput than traditional systems, reducing lead times and costs.

Frequently Asked Questions

What is G5 precision in steel balls?

G5 refers to a tolerance grade where the ball's diameter variation is within 0.00005 inches. It's used in high-speed bearings and precision instruments requiring minimal vibration and noise.

What’s the difference between 440C and 316 stainless steel balls?

440C has higher carbon content, making it harder and better for wear resistance. 316 has molybdenum, giving superior corrosion resistance, especially in saltwater environments.

Can you produce custom-sized or coated balls?

Yes, we offer custom diameters from 0.5mm to 50mm and can apply coatings such as PTFE, nickel plating, or passivation for enhanced performance.

What industries use your steel balls?

Our balls are used in automotive bearings, aerospace systems, medical devices, food processing equipment, valves, and high-precision machinery.

Do you offer samples?

Yes, we provide free samples for qualified buyers. Contact us with your specifications and intended application.

China Quality Suppliers fobcompany.info

Notice for Buyers: If you are a buyer, the above information is generated by AI collection and does not constitute any advice. If necessary, please visit the corresponding official website.

For Domain Owners: If you are the domain owner and do not want to be included by fobcompany.info, please contact support@fobcompany.info via your corporate email to cancel. We will cancel your inclusion within 3 business days.

如果您是域名所有者不想被fobcompany.info收录请用企业邮箱联系support@fobcompany.info 取消收录我们将在3个工作日取消您的收录

Service Request: If you are other domain and want to be included, please contact support@fobcompany.info

如果您是其他域名合作也请联系support@fobcompany.info

Precision Steel Balls for Industrial Excellence