Gcr15 3.1mm 4.5mm 4.6mm 4.7mm bearing steel chrome steel balls

Gcr15 bearing chrome steel balls, 3.1mm, 4.5mm, 4.6mm, and 4.7mm in diameter, made in China.

Chromium steel is a type of non-stainless steel, such as AISI 52100, En31, SUJ2, 100Cr6, 100C6, DIN 5401, used in applications such as bearings, tools, drill bits and utensils.

Asian-grade 52100 chromium steel balls are used in the ball and roller bearing industry and various automotive applications. These chromium steel balls have excellent surface quality. Due to hardening, they exhibit superior wear resistance, high hardness, and high load-bearing capacity.

Bearing balls are special highly spherical and smooth spheres, most commonly used in ball bearings, but also in components such as flywheel mechanisms. There are many different grades of balls.

Functions and Specifications

(1) Traceability of raw materials.

(2) Stabilized heat treatment technology.

(3) High precision (good roundness/roughness/hardness).

Precise Bearing Components for Engineering Applications

Manufactured for industries requiring reliable rotational elements, these Gcr15 bearing balls target engineers and procurement specialists seeking consistent quality in bearing balls manufacturers. Their sizes, ranging from 3.1mm to 4.7mm, facilitate integration into diverse bearing assemblies and mechanical devices. The product’s focus on dimensional accuracy and uniform material quality supports critical engineering requirements for load distribution and friction reduction, making these steel bearing balls essential components in high-precision bearing designs and mechanical subsystems.

Advanced Material Properties and Quality Compliance

Crafted from high-grade Gcr15 chromium steel, equivalent to AISI 52100, these chrome steel balls offer superior tensile strength and wear resistance enabled by heat treatment and surface finishing. The balls comply with strict standards such as GB, AISI, and JIS, guaranteeing mechanical properties like a tensile strength of 325,000 PSI and maintained roundness within G100-G200 precision grades. With certifications including RoHS, SGS, and ISO9001, the steel bearing balls provide robust rust prevention and dimensional stability critical to maintaining bearing reliability under varying load conditions.

Wide Industrial Application Supporting System Efficiency

These stainless steel ball bearings perform reliably within high-demand environments such as automotive bearing assemblies, flywheels, linear motion ball screws, and precision coupling devices. Their corrosion resistance and friction reduction capabilities enhance the operational lifespan of industrial equipment. Consistent availability with a supply capacity of 150,000 pieces monthly ensures stability for manufacturers requiring bulk procurement. Consequently, these chrome steel balls facilitate smoother rotation and improved mechanical efficiency across manufacturing, automotive, and industrial sectors.

Product Advantages

Engineering Design and Structural Integrity Benefits

Designed with strict adherence to national and international standards, these steel bearing balls ensure structural uniformity and compatibility with various bearing assemblies. The use of Gcr15 chromium steel offers enhanced hardness and shape retention, reducing premature wear. Packaging in multi-tier protection preserves the precision surface finish during transportation. This design approach guarantees seamless integration as a modular mechanical part in complex systems, enabling product designers to specify reliable bearing balls manufacturers within tight engineering tolerances.

Enhanced Durability and Operational Value in Usage

The combined benefits of high hardness, strong rust prevention, and precision sizing translate to extended bearing life and optimized mechanical performance. These steel bearing balls minimize friction and withstand cyclic loads, reducing maintenance intervals and operational downtime. Their versatility across diverse equipment types enhances inventory efficiency for procurement teams. This product solution offers dependable performance, translating into economic advantage by lowering replacement frequency and ensuring consistent system functionality.

Use Scenarios

Role in Automotive Bearing Assembly and Maintenance

In automotive manufacturing and repair environments, these chrome steel balls serve a critical function within wheel bearings and engine components, where precise load capacity and smooth rotational performance are pivotal. Their resistance to corrosion and wear aligns with automotive quality standards, supporting long-term system reliability. Integration into bearing units facilitates faster assembly and reduces the risk of premature failure, ensuring compliance with stringent regulatory and safety requirements within automotive production lines and service operations.

Application in Precision Linear Motion Systems

For industries deploying ball screws and linear actuators in automated machinery, the presence of uniform-quality stainless steel ball bearings directly influences positioning accuracy and operational smoothness. These bearing balls minimize backlash and mechanical noise due to their precise dimensions and surface polish, supporting continuous production without interruption. Their robust performance under oscillating loads enhances workflow stability, reinforcing system-level efficiency in packaging machinery, robotics, and CNC equipment manufacturing.

With over 20 years of experience, our company specializes in high-precision steel balls, operating two production bases and a warehousing center in Shandong, China. We maintain strict quality control and serve global industries with certified products. Contact us now for your custom quote or technical consultation.

Yuncheng Kangda Steel Ball Co., Ltd.

1. Established in 1998. Has 20 years of experience in production and marketing.

2. Possesses SGS/ROHS certification and an excellent management team.

3. Advanced production and testing equipment.

4. Fixed assets of over 10 million yuan.

5. Technical personnel with more than 10 years of production experience.

6. Our warehouse is located in a national AAAAA-level logistics park, which offers large inventory and fast delivery.

7. Based on 40% of domestic market sales.

8. High reputation, with a large number of customers from all over the world.

We sincerely look forward to establishing partnerships with any client at any time.

1. Cardboard box packaging 2. Cardboard box + pallet 3. Woven bag

4. Woven bags + rollers 5. Bottles + cartons + pallets 6. FIBC

Packaging details: Carton packaging, woven bags, cartons + pallets, rollers, or packaging according to customer requirements.

Delivery details: 3-5 days after order, depending on order quantity;

1. As a manufacturer and trading company, we are able to integrate the best resources in China and provide qualified parts to our customers at the most competitive prices.

2. Quality Assurance: 100% QC inspection before delivery; ISO9001:2008 and SGS certification; full refund or replacement for quality defects; 90-day quality warranty on all products.

3. Excellent customer service, responding within 24 hours.

4. Fast delivery: We have a large inventory ready to ship the day after ordering. For mass production, we can place urgent orders and deliver on time.

5. We offer OEM services and can produce custom parts based on customers' printed materials or samples.

6. With over 10 years of experience, we collaborate with clients worldwide.

7. One-stop service: We can handle everything from production, transportation, import customs clearance, and door-to-door delivery until your order is in your hands.