Bronze Nuts
-
Maximum Outer Diameter up to 4000 mm
-
Maximum Weight of a Single Piece 5 tons
Bronze nuts are internally threaded components with either smooth or textured outer surfaces, depending on their application. They are available in several shapes and types, including hexagonal, square, knurled, wing, self-locking, and pressure nuts. The hexagonal type is the most common and can also include variations with retainers, rounded corners, or modified threads. Bronze nuts are also used in motion systems, such as jackscrews, where the screw rotates and the nut moves to lift or lower a load.
A range of copper alloys is available for bronze nuts; each selected according to the mechanical requirements and operating conditions of the equipment. Commonly used bronze alloys include C95800, C86300, and C95400.
| Material No. | | | |
| Category | Aluminum Bronze | Manganese Bronze | Aluminum Bronze |
| Core Properties | • High strength and hardness (tensile strength 800–950 MPa, HB 220–280) • Excellent resistance to wear, impact, and high temperatures • Stable performance under pressure and vibration | • Outstanding toughness and fatigue resistance • Performs well under impact and vibration loads • Reliable mechanical stability in demanding applications | • Low friction coefficient and excellent anti-seizing properties • Strong corrosion resistance, superior to standard tin bronze • High dimensional stability under heavy loads |
| Typical Applications | Suitable for gears, bearing plates, marine propellers, high-pressure valve cores, and petrochemical pipe fittings | Used for couplings, automotive shock-absorbing parts, machinery shafts, and bridge expansion joints | Ideal for large bearing sleeves, machine tool spindles, and hydraulic pump columns |
Bronze nuts are used in a wide range of industrial fields that require high load capacity and precise motion. Some typical applications include:
- Forging and lamination systems, such as presses and forging shafts.
- Rubber machinery, including vulcanizing and friction presses.
- Steel rolling mills and other heavy-duty drive systems.
- Mechanical jacks and leveling bases used for lifting and alignment.
Many of these applications use press nuts, cylinder adjustment nuts, forging shaft guide nuts, or thread adjustment nuts for vulcanizing machines.
For demanding conditions, aluminum bronze is the preferred material. Containing up to 11.5% aluminum with small additions of iron, nickel, and manganese, it offers excellent strength, wear resistance, and corrosion protection, even in air, freshwater, or seawater environments.
- R&D Capability
We handle every production stage independently, from the development and casting of bronze wear parts to machining and quality inspection. This allows us to have full control over product quality and ensures that each process is backed by our proprietary know-how and patented technologies.
- Industry Experience
Backed by more than 40 years of experience, we specialize in bronze wear parts for wind power, mining, hydropower, marine, and oil extraction equipment. Our product catalog includes bronze and steel bearings, bushings, and other wear components. We have long-term partnerships with several Fortune 500 companies within these industries.
- Production Strength
Our workshop is equipped with 20 advanced five-axis machining centers from MAZAK and MAKINO, along with 35 imported turning and milling machines. The 5,000 m² temperature-controlled facility is operated by experienced CNC technicians who make sure every part is machined with accuracy and consistency.
- Quality Control and Certifications
We manage every step of production in-house, following ISO9001 and CCS quality standards to ensure consistent results. Our CNAS-accredited laboratory (CNAS L5937) and skilled inspection team handle all testing and verification, including material composition, hardness, tensile strength, and microstructure, along with non-destructive tests such as UT, PT, and VT. All procedures comply with GB, ASTM, ISO, JIS, and YS standards.