Optimizing Reliability: Materials & Standards
> RIGOROUS METALLURGICAL DETAIL FOR PREMIUM INDUSTRIAL COMPONENTS.
Bearing Materials are the most critical factor determining the operational life and load-bearing capacity of any mechanical system. ZGBK prioritizes high-grade metallic alloys that offer exceptional fatigue life, corrosion resistance, and structural stability.
For noise-sensitive applications, check our Bearing Vibration Standards.
Chrome Steel (GCr15) Data
TABLE 1. CHEMICAL COMPOSITION OF BEARING STEEL (GCR15)
| NO. | C | MN | SI | CR | S < | P < | NI | CU | HB |
|---|---|---|---|---|---|---|---|---|---|
| GCr15 | 0.95-1.05 | 0.20-0.40 | 0.15-0.35 | 1.30-1.65 | 0.020 | 0.027 | 0.30 | 0.25 | 170-207 |
TABLE 2. INTERNATIONAL STEEL GRADE COMPARISON
| COUNTRY | CHINA | ISO | U.S.A | GERMANY | JAPAN | SWEDEN |
|---|---|---|---|---|---|---|
| Grade | GCr15 | 683/XVIII | AISI 52100 | 100Cr6 | SUJ2 | SKF3 |
TABLE 3. PHYSICAL PROPERTIES OF CHROME STEEL
| PROPERTIES | DENSITY (KG/M³) | EXPANSION (10⁻⁶/K) | HARDNESS (HRC) | MODULUS (GPA) |
|---|---|---|---|---|
| Values | 7.81 x 10³ | 12.5 | 60 – 64 | 208 |
Stainless Steel Composition
TABLE 4. CHEMICAL COMPOSITION OF STAINLESS STEEL
| NO. | C% | CR% | SI% | MN% | S% | P% | MO% | NI% |
|---|---|---|---|---|---|---|---|---|
| AISI 440C | 0.95-1.10 | 17.0-19.0 | ≤0.8 | ≤0.7 | ≤0.03 | ≤0.035 | - | - |
| AISI 304 | ≤0.08 | 18.0-20.0 | ≤1.0 | ≤2.0 | ≤0.03 | ≤0.035 | - | 8.0-10.5 |
| AISI 316 | ≤0.08 | 16.0-18.0 | ≤1.0 | ≤2.0 | ≤0.03 | ≤0.045 | 2.0-3.0 | 10.0-14.0 |
Tolerance & Precision Comparison
TABLE 5. TOLERANCE & PRECISION GRADE COMPARISON
| STANDARD | NORMAL | CLASS 6 | CLASS 5 | CLASS 4 | CLASS 2 |
|---|---|---|---|---|---|
| ISO 492 / JIS | Normal/0 | Class 6 | Class 5 | Class 4 | Class 2 |
| DIN 620 | P0 | P6 | P5 | P4 | P2 |
| ANSI ABMA 20 | ABEC 1 | ABEC 3 | ABEC 5 | ABEC 7 | ABEC 9 |
Material Fatigue Life & Integrity
The fatigue life of Bearing Materials is determined by the cleanliness of the steel. By using vacuum-degassed steel, ZGBK ensures that the molecular structure is uniform, significantly extending the L10 rating life.
Technical Selection for Extremes
ZGBK offers specialized heat stabilization (S0 to S4) to ensure dimensional accuracy up to 250°C.
Vollständige technische Daten anfordern
Unser technisches Team stellt vollständige ISO 492-Toleranztabellen für Ihr Projekt bereit.
Konstruiert für höchste Zuverlässigkeit.
- ✓ Hochreiner vakuumentgaster Stahl
- ✓ ISO 9001:2015-zertifizierte Produktion
- ✓ 100 % Geräusch- und Vibrationsprüfung
7 Key Factors That Affect Bearing Life
7 Key Factors Affecting Bearing Life: A Comprehensive Guide The concept of bearing life is crucial in the field of mecha…
Read More
Understanding ISO 281 Bearing Life Standard
Learn ISO 281 bearing life calculation, key formulas, and applications to optimize rolling bearing performance, reliabil…
Read More
What is L10 Bearing Life? A Simple Guide
Summary: Understanding L10 Bearing Life L10 Bearing Life is the standard reliability metric in mechanical engineering, r…
Read More