1. Aluminum Alloy (6061/6063, Most Commonly Used)

• Material Characteristics: Light weight (about 1/3 of carbon steel), moderate hardness (HRC15-20), easy to process, high precision, can be anodized, and has certain corrosion resistance.
• Core Advantages: High cost performance, precise tooth profile, suitable for light and medium load, high-speed scenarios, low energy consumption and convenient maintenance.
• Application Scenarios: Dry, high-precision scenarios such as automation equipment, precision machine tools, packaging/textile machinery, and servo motor supporting equipment.
• Notes: Limited load-bearing capacity, not resistant to heavy load impact; easy to oxidize without anodization, and protection is required in humid and corrosive environments.

2. Carbon Steel 45# (Medium and Heavy Load Type)

• Material Characteristics: Medium carbon steel, adjustable hardness (HRC20-25 unquenched, HRC45-50 after quenching), high strength, good toughness, and wear resistance can be improved by heat treatment.
• Core Advantages: Strong load-bearing capacity, wear resistance and fatigue resistance, suitable for medium and heavy load, high-speed transmission, with outstanding cost performance.
• Application Scenarios: Medium and heavy load scenarios such as medium conveyors, printing machinery, machine tool spindles, and construction machinery.
• Notes: Easy to rust, regular anti-rust treatment is required; not resistant to humid and corrosive environments.

3. Alloy Structural Steel (40Cr, 20CrMnTi, High-End Heavy Load Type)

• Material Characteristics: Contains alloy elements such as chromium, manganese and titanium. After heat treatment, the hardness reaches HRC50-60, and its tensile strength, impact resistance and wear resistance are far superior to ordinary carbon steel.
• Core Advantages: Large torque-bearing capacity, impact resistance, not easy to wear and break under high-speed and heavy load, and stable transmission accuracy.
• Application Scenarios: Severe scenarios such as metallurgical, mining equipment, large precision machine tools, and high-speed heavy-load conveyors.
• Notes: High cost, difficult processing, requires professional heat treatment, and the surface needs anti-rust treatment.

4. Stainless Steel (304, 316, Anti-Corrosion Special Type)

• Material Characteristics: Contains chromium and nickel, with rust resistance, corrosion resistance and acid-alkali resistance. 316 material has better corrosion resistance than 304, and can resist humid, seawater, chemical medium and other corrosive environments.
• Core Advantages: No rust, long service life, no frequent maintenance, suitable for scenarios with high hygiene and corrosion resistance requirements.
• Application Scenarios: Humid and corrosive scenarios such as food, medical machinery, chemical, water treatment equipment, and seaside outdoor equipment.
• Notes: High cost, limited load-bearing capacity, not resistant to heavy load impact, and strict control of processing precision is required.

5. Gray Cast Iron (HT200/HT250, Economic Type)

• Material Characteristics: Moderate hardness (HRC18-22), easy to cast and process, low cost, has certain wear resistance and shock absorption, and stable size.
• Core Advantages: Extremely high cost performance, shock absorption and noise reduction, suitable for light load, low speed and scenarios with low precision requirements.
• Application Scenarios: Light load and low speed scenarios such as ordinary conveyors, agricultural machinery, and small general machinery.
• Notes: Poor toughness, weak impact resistance, easy to break teeth under high speed and heavy load; easy to rust, not resistant to humid and corrosive environments.