Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings
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Product Highlights
- Wide Material Selection: Chrome steel, stainless steel, carbon steel, forged steel, cast steel, ceramic, brass, copper, titanium, and tungsten carbide.
- Broad Size Range: Sizes available from 0.5mm to 150mm, with custom sizes supported for specific applications.
- High Hardness & Wear Resistance: Chrome steel balls reach HRC 58-66; forged balls reach HRC 55-65 for superior durability.
- Multiple ISO Grades: Precision grades G10 to G100 (ISO 3290) available for various tolerance requirements.
- Corrosion Resistant Options: Stainless steel grades 304, 316, 420, and 440C offer anti-rust properties for harsh environments.
- Versatile Applications: Suitable for bearings, automotive, medical, aerospace, mining, cement, and food industries.
- ISO Certification: Products meet ISO standards ensuring quality and reliability for global markets.
- Fast Lead Time: Off-season delivery within 15 workdays; peak season delivery within one month.
Product Attributes
- Customization
- Available
- Customized
- Non-Customized
- Certification
- ISO
- Model NO.
- bearing ball grades
- Standard Parts
- Yes
- Universal
- Yes
- Type
- Bearing Ball
- Material
- Chrome Steel
- Size
- 3.0--100mm
- Others
- Chrome Steel/Carbon Steel/Ceramic/Stainless Steel
- Pakcing
- 20kgs/Carton
- Hardness
- HRC58-62
- Transport Package
- Carton
- Specification
- 3.969 4.763 7.144
- Trademark
- UJK
- Origin
- China
- HS Code
- 8482910000
- Production Capacity
- 5000000000
- Package Size
- 10.00cm * 25.00cm * 13.00cm
- Package Gross Weight
- 0.800kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings
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Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings -
Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings -
Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings -
Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings -
Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings -
Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings -
Bearing Balls for Sale Precision Ball Company Bearing Ball Manufacturing Bearing Ball Grades Balls for Ball Bearings
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Product Description
1. Bearing Steel Balls (Chrome Steel Balls)
Material: High-carbon chromium alloy steel (AISI 52100, SUJ2, GCr15) with excellent hardness (HRC 58-66) and wear resistance.
Features: Precision-ground, low noise, and long service life. Ideal for bearings, automotive parts, and precision machinery.
Size Range: 1mm - 50mm (standard), custom sizes available.
Grades: G10-G100 (ISO 3290).
2. Stainless Steel Balls
Material: Corrosion-resistant stainless steel (AISI 304, 316, 420, 440C).
Features: Anti-rust, high durability, and suitable for food, medical, marine, and chemical industries.
Size Range: 0.5mm - 150mm.
Types:
-
304/316: Non-magnetic, general-purpose.
-
420/440C: Magnetic, heat-treated for higher hardness (HRC 58-60).
3. Carbon Steel Balls
Material: Low/medium carbon steel (AISI 1010, 1085) or high-carbon steel (AISI 1095).
Features: Cost-effective, used in low-load applications like bicycle parts, casters, and hardware.
Size Range: 1mm - 100mm.
4. Forged Steel Balls (Grinding Media Balls / Mill Balls)
Material: Forged high-carbon or alloy steel (B2, B3, 60Mn).
Features: High impact resistance for mining, cement, and power plants.
Size Range: 20mm - 150mm.
Hardness: HRC 55-65.
5. Grinding Steel Balls (Cast Steel Balls)
Material: High-chrome cast iron (Cr10-Cr30) or alloy steel.
Features: Superior wear resistance for ball mills in mining and milling industries.
Size Range: 15mm - 125mm.
Chrome Content: 10%-30% (higher Cr = longer lifespan).
6. Ceramic Balls
Material: Zirconia (ZrO2), silicon nitride (Si3N4), or alumina (Al2O3).
Features: Non-corrosive, electrically insulating, and heat-resistant. Used in aerospace, valves, and bearings.
Size Range: 0.5mm - 100mm.
7. Metal Balls (General-Purpose)
Material: Brass, copper, titanium, or tungsten carbide.
Applications: Decorative, industrial, or specialized mechanical uses.
Steel Ball Size Reference Chart
| Diameter (mm) | Diameter (Inches) | Tolerance Grade (ISO 3290) | Typical Applications |
|---|---|---|---|
| 0.5 | 0.0197" | G10-G100 | Precision instruments, micro bearings |
| 1.0 | 0.0394" | G10-G100 | Medical devices, optical equipment |
| 1.588 | 1/16" | G5-G20 | Small bearings, model parts |
| 2.0 | 0.0787" | G10-G100 | Electronics, micro motors |
| 3.0 | 0.1181" | G10-G100 | Bicycle bearings, slides |
| 3.969 | 5/32" | G5-G20 | Industrial pulleys, machinery |
| 4.763 | 3/16" | G5-G20 | Automotive components, household appliances |
| 5.0 | 0.1969" | G10-G100 | Pump valves, transmission parts |
| 6.0 | 0.2362" | G10-G100 | Power tools, fitness equipment |
| 6.350 | 1/4" | G5-G20 | Standard bearings (e.g., 608 bearings) |
| 7.938 | 5/16" | G5-G20 | Industrial bearings, mechanical drives |
| 9.525 | 3/8" | G5-G20 | Automotive hubs, heavy machinery |
| 12.0 | 0.4724" | G10-G100 | Construction machinery, steering systems |
| 12.700 | 1/2" | G5-G20 | Large bearings, gearboxes |
| 15.0 | 0.5906" | G10-G100 | Wind turbine equipment, heavy-duty machines |
| 19.050 | 3/4" | G5-G20 | Mining machinery, ball mills |
| 25.0 | 0.9843" | G10-G100 | Cement industry, large transmissions |
| 25.400 | 1" | G5-G20 | Heavy industrial applications |
About the Supplier
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Company Profile
Shandong UJK Bearing Co., Ltd. is an experienced manufacturer and exporter in China. The address is located in Jinan City, Shandong Province.
We mainly produce deep groove ball bearings, tapered roller bearings, pillow block bearings, cylindrical roller bearings, spherical roller bearings and customized non-standard bearings. There are many types of bearings and a huge inventory. It can respond quickly to customer orders and meet the diversified needs of customers to the greatest extent.
Our main export markets are Germany, Spain, France, Turkey, Russia, Ukraine, Vietnam, Thailand, Malaysia, the United States, Brazil, Argentina, Singapore.
We can undertake OEM orders from large international bearing factories. We have established partnerships with some international bearing brands. We produce bearings in strict accordance with ISO standards, and all bearings meet international standards. Bearing material: Bearing steel, stainless steel, ceramic. Can be used in a variety of complex environments.
Products are mainly used in machine tools, automobiles, trucks, buses, trailers, construction machinery, industrial gearboxes, mining conveyor belts, petroleum machinery, mining machinery, motorcycles, general machinery and agricultural markets.
UJK Bearings will adhere to the long-term policy of "providing the most cost-effective bearings", and welcomes domestic and foreign customers. We sincerely invite UJK brand global agents to provide better prices.
About Our Factory & Business Background
- Address
- Room 24-C48, Building 3, Aosheng Building, No. 1166, Xinluo Street, High-Tech Zone, Jinan, Shandong, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment, Money Gram
- International Commercial Terms(Incoterms)
- FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays - Nearest Port
- Qingdao
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2018-12-22
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Mid East
FAQ
- What materials are available for the bearing balls?
- We offer Chrome Steel, Stainless Steel (304, 316, 420, 440C), Carbon Steel, Forged Steel, Cast Steel, Ceramic, Brass, Copper, Titanium, and Tungsten Carbide.
- What is the size range of the balls?
- Standard sizes range from 0.5mm to 150mm depending on the material, and custom sizes are available upon request.
- Are the bearing balls customizable?
- While the standard listing indicates non-customized, the description explicitly states that custom sizes are available for specific needs.
- What are the hardness levels for the steel balls?
- Chrome steel balls have a hardness of HRC 58-66, forged steel balls range from HRC 55-65, and stainless steel 420/440C reach HRC 58-60.
- Do you offer ISO certification?
- Yes, our products are ISO certified and available in grades G10 to G100 according to ISO 3290.
- What is the lead time for orders?
- The lead time is within 15 workdays during off-peak seasons and approximately one month during peak seasons.
- Which industries can use these balls?
- They are ideal for automotive, medical, aerospace, mining, cement, food, electronics, and general machinery applications.
- What are the payment terms?
- We accept LC, T/T, D/P, PayPal, Western Union, Small-amount payment, and Money Gram.
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Product Groups
- Deep Groove Ball bearing
- Tapered roller bearings
- Mounted bearing units & inserts
- Automotive bearings
- Agricultural bearings
- Self-aligning ball bearings
- Angular Contact Ball Bearings
- Cylindrical Roller Bearings
- Spherical roller bearings
- Thrust ball bearings
- Adapter sleeves
- Brand bearings
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