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SUJ2 Bearing Steel Balls

SUJ2 Bearing Steel Balls

SUJ2 bearing steel balls, also written as SUJ-2, are widely used in precision bearings and motion systems, offering consistent load performance, wear resistance, and long fatigue life for demanding rolling applications.

Through-Hardened

Bearing-Grade Material

High Load Capability

Cost-Effective for Standard Industrial

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Detailed Description

Also known as bearing steel balls, SUJ2 is a standard material used in precision bearings and motion control applications.

SUJ2 Bearing Steel Balls

SUJ2 bearing steel balls are produced from high-carbon chromium steel and are widely used in precision bearings and mechanical systems.Their through-hardened structure ensures consistent dimensional stability and reliable performance under high-speed and continuous rolling conditions.

Technical Specifications

Item	Specification
Material	SUJ2 / AISI 52100 / 100Cr6
Size Range	0.5 mm – 200 mm
Hardness	60 – 66 HRC
Precision Grades	G10 – G1000
Density	7.81 g/cm³
Standard	ISO 3290 / JIS standard equivalent
Heat Treatment	Through-hardened
Packing	10 kg or 20 kg per carton, approx. 1 ton per pallet, or as required
Condition	Dry or oiled (anti-rust protection)
Delivery Time	Stock available or 35 days

Chemical Composition

Element	C	Si	Mn	P	S	Cr
Typical Value (%)	0.93–1.05	0.15–0.35	0.25–0.45	≤0.025	≤0.015	1.35–1.65

Typical chemical composition shown for reference only. Actual values may vary slightly depending on the specific standard or material designation ordered.

FAQ

What information do you need for a quotation?

To provide an accurate quotation, please share the ball size, material (e.g. AISI 52100 / 100Cr6), precision grade if required, quantity, and delivery term (FOB, CIF, etc.).

Can you support custom sizes or non-standard requirements?

Yes, we support custom production based on your requirements, including size, precision grade, packaging and special processing. Minimum order quantity may vary depending on specifications.

What is the minimum order quantity (MOQ)?

MOQ depends on the ball size and specification. For standard sizes, small trial quantities may be available. For customized products, MOQ will be confirmed based on production requirements.

Can you provide samples for testing?

Yes, we can provide samples for testing and evaluation. Standard sizes are usually available in stock.

Do you provide inspection reports or material certificates?

Yes, we can provide inspection reports covering dimensions, tolerance and hardness. Material certificates are available upon request.

How do you ensure product quality?

Our chrome steel balls are produced under strict quality control and can be supplied according to applicable standards such as ISO 3290, DIN 5401, or customer-specific requirements.

What packaging options do you offer?

We offer multiple packaging options, including cartons, steel drums and bulk bags. Customized packaging is available based on customer requirements.

Can you help select the right grade for our application?

Yes, we can recommend suitable precision grades based on your application, load conditions and performance requirements.

Why Choose Huari Steel Ball?

Factory Direct Value

As a manufacturer since 1986 with an annual capacity of 3,600 tons, we eliminate middlemen, offering you competitive factory-direct pricing and stable lead times.

Engineering Expertise

Our team doesn't just sell parts; we provide solutions. We offer CAD/STEP drawing support and technical consultation to help you select the exact clearance (C0/C3) and grease type for your application.

Customization Flexibility

Unlike rigid distributors, we support custom modifications, including special internal clearances, non-standard dimensions, and private labeling (OEM).

Certifications & Quality