bearing steel
Bearing steel is the steel used to make balls, rollers, and bearing rings. Bearing steel, also known as high carbon chromium steel, has a carbon content of ωc of about 1% and a chromium content of ωcr of 0.5%-1.65%. Bearing steel is divided into six categories: high carbon chromium bearing steel, chromium-free bearing steel, carburized bearing steel, stainless bearing steel, medium and high temperature bearing steel and antimagnetic bearing steel.
Bearing steel has high and uniform hardness and wear resistance, as well as high elastic limit. The requirements for the uniformity of the chemical composition of the bearing steel, the content and distribution of non-metallic inclusions, and the distribution of carbides are very strict, and it is one of the most stringent steel grades in all steel production.
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The described bearing steels and steels for rolling bearings are defined by PN-74/H-84041, BN-72/H-0641-06, and PN-EN ISO 683-17, according to which the company provides:
● Seamless bearing tubes according to PN-72/H-74250
● Rolled bearing sheets
● Forgings and forged bars according to PN-91/H-94011, EN 10250
● Cold-rolled bearing sheets according to PN-75/H-92335
● Rolled bearing steel bars according to PN-75/H-93200, PN-55/H-93216, PN-55/H-93217, PN-72/H-93201, PN-EN 10059, PN-55/H-93218, PN-72/H-93202, PN-EN 10058,
● Light bars made of bearing steel PN-72/H-93208, PN-86/H-93209, PN-85/H-93210, PN-EN 10278
● Bearing drawn wires PN-72/H-93208, PN-85/H-93210, PN-EN 10278
Supply Range of Bearing Steel
● Steel Round Bar: diameter 8mm – 800mm
● Steel Plate: thickness 2mm –300mm x width 200mm – 800mm
● Other sizes of steel as per customer’s requirements
● Process: Cold drawn, hot rolled, forged etc.
● Surface Finish: black, rough machined, turned, polished or as per given requirements.
| Spec | C % | Si % | Mn % | P % | S % | Cr % | Mo % | Ni | Hardness |
|---|---|---|---|---|---|---|---|---|---|
| SAE52100 100Cr6 SUJ2 |
0.95 ~ 1.10 | 0.15- 0.35 |
0.50 max |
0.025 max |
0.025 max |
1.30 ~ 1.60 |
64 HRC max |
||
| AISI440C SUS440C X105CrMo17 |
0.95 ~ 1.20 | 1.00 max |
1.00 max |
0.04 max |
0.03 max |
16.0 ~18.0 |
0.75 max | 58 HRC max |
|
| KS440 ACD34 X65Cr13 |
0.60 ~ 0.75 | 1.00 max |
1.00 max |
0.03 max |
0.02 max |
11.5 ~13.0 |
0.3 max | 60 HRC max |
|
| AISI420 SUS420 X20Cr13 |
0.26 ~ 0.35 | 1.00 max |
1.50 max |
0.04 max |
0.03 max |
12.0 ~14.0 |
55 HRC max |
||
| AISI304 SUS304 X5CrNi1810 |
0.08 max |
0.75 max |
2.00 max |
0.045 max |
0.03 max |
18.0 ~20.0 |
8.0 ~ 10.5 |
39 HRC max |
|
| AISI316 SUS316 X5CrNiMo17- 12- 2 |
0.08 max |
1.00 max |
2.00 max |
0.045 max |
0.03 max |
16.0 ~18.0 |
2.0 ~ 3.0 |
10.0 ~14.0 |
39 HRC max |
We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.
Metalworking Services
CNC Machining
Sheet Metal Fabrication
Metal Welding
Metal Cutting
Metal Bending
Metal Punching
Metal Forging
Metal Sheet Rolling
Tube and Plate Drilling
Heavy Forging Press Capacity
Our heavy-duty forging presses support open-die forging and deformation of large-section forgings, including discs, shafts, blocks, and custom components. This capability enables us to meet the demanding forming requirements of heavy industrial applications.
Heat Treatment Capability
Heat treatment is a critical step in achieving the mechanical properties required for heavy-duty forgings. Our process capabilities meet the strength, toughness, and structural stability requirements for forged components used under demanding operating conditions.
Heavy Shaft Machining
We offer machining capabilities for large forged shafts and long cylindrical components, supporting both rough and finish machining. This capacity is suitable for stepped shafts, rotor shafts, rollers, and other heavy-duty forged shaft components.
Ring Forging Machining
Our machining facilities are capable of handling large ring-shaped forgings and circular parts that require precise turning, face machining, boring, and contour control. This capability is suitable for industrial ring blanks, heavy-duty circular parts, and machined ring forgings.
Cylindrical Forging Machining
We offer machining solutions for heavy-duty cylindrical, hollow, and tubular forgings. This capability supports the machining of sleeves, cylinders, and other thick-walled forged components used in pressure vessels, rotating systems, and general industrial applications.
Inspection & Testing
Quality control is integrated into our production process through the inspection and testing of forged and machined parts. Our capabilities help verify the dimensional accuracy, condition, and quality consistency of industrial forgings prior to delivery.
Packing & Delivery
Finished forgings are properly protected and packaged to minimize the risk of damage during storage and transportation. Our packaging methods ensure the safe domestic delivery and export shipment of machined and high-value forged components.
