High-carbon Steel Tubes For Ball And Roller Bearings
Seamless bearing pipes for ball and roller bearings, offering high hardness and wear resistance.
High-carbon Steel Tubes For Ball And Roller Bearings
Seamless bearing pipes for ball and roller bearings, offering high hardness and wear resistance. ideal for automotive, machinery, and aerospace applications.
Seamless Bearing Pipes are precision-engineered for manufacturing ball and roller bearings, offering exceptional hardness, wear resistance, and durability. Conforming to standards like JIS G4805 and ASTM A295, these high-carbon chromium steel pipes are ideal for ball bearing tubes and roller bearing pipes in industries such as automotive, machinery, aerospace, and heavy equipment. Their seamless construction ensures uniform structure and superior performance under high loads and rotational speeds.
Manufactured through cold-drawing or hot-rolling processes, Seamless Bearing Pipes are available in outer diameters from 10 mm to 180 mm and wall thicknesses from 1 mm to 20 mm. Lengths can be standard (4–6m) or customized (up to 12m) to meet specific requirements. Heat treatments like spheroidizing annealing, quenching, and tempering optimize hardness and toughness, ensuring the pipes withstand pipeline wear in bearing applications. The seamless design eliminates weld imperfections, providing consistent mechanical properties critical for bearing reliability.
The chemical composition of bearing pipes, typically high-carbon steel grades like SUJ2 (JIS G4805) or 52100 (ASTM A295), includes carbon (0.95–1.10%), chromium (1.30–1.60%), silicon (0.15–0.35%), manganese (0.25–0.45%), phosphorus (≤0.025%), and sulfur (≤0.025%), ensuring high hardness and moderate corrosion resistance. These pipes undergo stringent testing, including hardness, tensile, impact, and nondestructive tests (ultrasonic or eddy current), to meet industry standards. Surface treatments like polishing or phosphating enhance wear resistance, while precision-cut ends ensure compatibility with bearing manufacturing processes.
Seamless Bearing Pipes are essential for producing high-precision bearings used in automotive wheel hubs, industrial machinery, wind turbines, and aerospace components. Compared to general-purpose steel pipes, bearing pipes offer superior hardness (HRC 60–64) and fatigue resistance, making them ideal for high-load, high-speed applications. Their ability to resist wear and deformation under cyclic stress ensures long service life in demanding environments.
These pipes address challenges like wear, fatigue, and dimensional precision in bearing manufacturing. Their seamless construction, compliance with stringent standards, and high-performance properties make them a reliable choice for engineers seeking durable high-carbon steel bearings for critical applications, ensuring safety, efficiency, and extended operational life.
Achieves HRC 60–64 for superior bearing performance.
Resists abrasion under high loads and speeds.
Withstands cyclic stress for long bearing life.
Tight tolerances ensure compatibility with bearing manufacturing.
Moderate corrosion resistance with surface treatments.
Certified with rigorous testing to meet JIS G4805 and ASTM A295 standards.
| Country | USA | Germany | Japan | British |
|---|---|---|---|---|
| Standard | ASTM A295 | DIN 17230 | JIS G4805 | BS 970 |
| Grades | 52100 | 100Cr6/1.3505 | SUJ2 | 535A99/EN31 |
ASTM A295 specification covers high-carbon bearing-quality steel to be used in the manufacture of anti-friction bearings. The most common steel grade in ASTM A295 standard is 52100.
| Standard | Grade | C | Mn | P | S | Si | Ni | Cr | Cu | Mo |
|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A295 | 52100 | 0.93-1.05 | 0.25-0.45 | 0.025 | 0.015 | 0.15-0.35 | 0.25 | 1.35-1.60 | 0.3 | 0.1 |
| DIN 17230 | 100Cr6/1.3505 | 0.90-1.05 | 0.25-0.45 | 0.03 | 0.025 | 0.15-0.35 | 0.3 | 1.35-1.65 | 0.3 | – |
| JIS G4805 | SUJ2 | 0.95-1.10 | 0.5 | 0.025 | 0.025 | 0.15-0.35 | – | 1.30-1.60 | – | – |
| BS 970 | 535A99/EN31 | 0.95-1.10 | 0.40-0.70 | – | – | 0.10-0.35 | – | 1.20-1.60 | – | – |
| Properties | Metric | Imperial |
|---|---|---|
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Hardness, Brinell | – | – |
| Hardness, Knoop (converted from Rockwell C hardness) | 875 | 875 |
| Hardness, Rockwell C (quenched in oil from 150°C tempered) | 62 | 62 |
| Hardness, Rockwell C (quenched in water from 150°C tempered) | 64 | 64 |
| Hardness, Rockwell C (quenched in oil) | 64 | 64 |
| Hardness, Rockwell C (quenched in water) | 66 | 66 |
| Hardness, Vickers (converted from Rockwell C hardness) | 848 | 848 |
| Machinability (spheroidized annealed and cold drawn. Based on 100 machinability for AISI 1212 steel) | 40 | 40 |
| Feature | Seamless Bearing Pipes (SUJ2/52100) | Stainless Steel Bearings (440C) | Ceramic Bearings |
|---|---|---|---|
| Material Type | High-Carbon Chromium Steel | Stainless Steel | Silicon Nitride or Zirconia |
| Hardness (HRC) | 60–64 | 58–62 | 75–80 |
| Wear Resistance | High | Moderate | Very High |
| Corrosion Resistance | Moderate (with coatings) | High | Excellent |
| Fatigue Resistance | High | Moderate | Very High |
| Cost | Moderate | Higher | Very High |
| Applications | Automotive, machinery, aerospace | Food processing, marine | High-speed, corrosive environments |
| Manufacturing Process | Seamless, heat-treated | Forged or machined | Sintered or molded |
| Key Advantage | Balanced hardness and cost | Corrosion resistance | Extreme durability |
| High-Temperature Suitability | Limited (up to 150°C) | Moderate (up to 300°C) | High (up to 800°C) |
Explore seamless bearing pipes with targeted long-tail keywords, covering specifications, applications, manufacturing, procurement, and dimensions for high-performance bearings.
Note: Seamless bearing pipes are designed for high-precision bearing manufacturing. For detailed specifications, refer to JIS G4805, ASTM A295, or contact a certified supplier.
Seamless Bearing Pipes are critical for manufacturing high-precision ball and roller bearings in automotive, machinery, aerospace, and heavy equipment industries.
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