High-Tensile Centrifugally Cast Corrosion-Resistant Bushings & Bearings
DEV PRECISION ENGINEERS manufactures and exports premium-grade Aluminum Bronze, Brass, and Aluminum-Tin Bushings engineered for high load-bearing capacity, exceptional wear resistance, and extreme durability in aggressive environments. Utilizing advanced Centrifugal Casting Technology and precision multi-axis CNC/VMC machining, we produce near-zero-defect components delivered in both proof-machined and fully finished conditions.
Manufacturing Capabilities & Technical Parameters
| Technical Parameter | Capabilities & Range |
| Casting Technology | Centrifugal Casting (Cantilever, Horizontal & Vertical) |
| Machining Capabilities | CNC, VMC 4+1 Axis, Precision Milling, Grinders, Heavy-Duty Lathes, Drills |
| Supply Condition | Proof Machined (Rough Turned) or Fully Machined to Drawing Tolerances |
| Dimensional Range | Outer Diameter (OD): 30mm to 400mm and length upto 400mm |
| Production Capacity | 0.010 kg to 400 Kg per casting |
| Melting Equipment | High-Purity Induction Furnace System & treditional Coal Furnace |
Chemical Composition & Alloy Specifications
Our alloys are melted in induction furnaces using certified standard ingots to ensure exact physical and chemical properties matching client requirements:Alloy Chemical Composition Matrices
1. Yellow Brasses & Aluminum Bronzes
| Category | Grade / Alloy | Copper (Cu) | Tin (Sn) | Lead (Pb) | Zinc (Zn) | Aluminum (Al) | Iron (Fe) | Nickel (Ni) | Other |
| Yellow Brasses | HI COPPER | 72% | 1% | 3% | 24% | — | — | — | — |
| COM’L. #1 | 67% | 1% | 3% | 29% | — | — | — | — | |
| Aluminum Bronzes | ALUM. BRZ. AB1 | Balance | — | — | — | 9.0% – 10.0% | 1.5% – 3.5% | < 1.0% | < 1.00% Mn |
| NI-AL. BRZ. | Balance | — | — | — | 9.0% – 10.0% | 4.0% – 5.0% | 4.0% – 5.0% | < 1.50% Mn |
2. Aluminum-Tin Bearing Alloy
| Alloy Category | SAE Reference | Tin (Sn) | Copper (Cu) | Nickel (Ni) | Silicon (Si) | Iron (Fe) | Aluminum (Al) |
| Aluminum Tin | SAE – 770 | 5.5% – 7.5% | 0.7% – 1.3% | 0.7% – 1.3% | 0.7% Max | 0.7% Max | Balance |
Mechanical Properties & Application Reference Guide
| Alloy Form | Commercial Alloy | SAE Ref. | Tensile Strength | Brinell Hardness | Typical Industrial Uses & Applications |
| Aluminum Alloys | 319 | 326 | 23 – 28 | 55 – 100 | Machine tool parts, marine applications requiring pressure tightness and corrosion resistance |
| 356 | 323 | 30 – 33 | 55 – 95 | General mechanical components requiring good castability and strength | |
| A356 | 336 | 34 – 37 | 70 – 105 | Aircraft applications – higher strength and ductility applications | |
| 770 | 770 | — | — | Aircraft applications – higher strength and ductility applications | |
| Yellow Brasses | HI COPPER | 35 | 45 | — | Plumbing fixtures – ornamental castings |
| COM’L. #1 | 30 | 50 | — | Plumbing fixtures not subject to high pressure – ornamental castings | |
| Manganese Bronzes | #70 MANG. | 43 | 65 | 100 | Marine underwater fittings – propellers, struts, machinery parts |
| #90 MANG. | 430A | 90 | 180 | Higher strength marine fittings – structural parts | |
| #110 MANG. | 430B | 110 | 225 | Low speed heavy load bearings – gears, cams, nuts | |
| Aluminum Bronzes | ALUM. BRZ. AB1 | 68A | 65 | 110 | Acid resisting pumps – valve seats, gears, propellers |
| ALUM. BRZ. AB1 | 68B | 65 | 110 | Nuts – gears – slides | |
| ALUM. BRZ. AB2 | — | 70 | 180 | Heavily loaded worm gears | |
| ALUM. BRZ. AB2 | — | 90 | 200 | Heavily loaded gears – cams – corrosion resistant parts | |
| Cast Aluminium Bronze | JIS/HS 114 | — | — | Very hard material suitable for marine environment, hardened shaft essential, relatively poor embedability & for structured components under sliding conditions |
Core Quality Norms & Performance Features
- Near-Zero Defect Centrifugal Castings: Centrifugal forces drive lighter impurities to the center core, ensuring a dense, void-free grain structure with superior tensile strength and extended fatigue life.
- Chemical & Metallurgical Integrity: Every batch is processed in induction furnaces using standard certified ingots to ensure exact chemical and physical compliance with client specifications.
- Aggressive Environment Performance: Low reactivity with combustion exhaust, sulfurous compounds, seawater, and harsh chemical compounds.
- Precision In-House Machining: Delivered proof-machined or fully finished on multi-axis VMC/CNC machinery to exact drawing specifications.
Primary Target Industries
- Marine & Shipbuilding: Underwater fittings, stern tube bearings, propellers, struts, and sea-chest valves.
- Chemical & Petroleum: Acid-resistant pump bodies, valve seats, homogenizers, and pipeline hardware.
- Aerospace & Defense: Structural components, landing gear bushings, and high-ductility assemblies.
- Heavy Industrial Machinery: High-load worm gears, cams, heavy slides, and low-speed heavy-bearing applications.
Custom Drawings & Special Alloy Specifications
Request a Custom Quotation / RFQ
We manufacture non-standard sizes, custom chemical compositions, and complex geometries matching your exact engineering prints. Contact our engineering team for export pricing and technical consultations.