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Bronze Eye Bolts Bronze Terminals for Transformers

Bronze Eye Bolts Bronze Terminals for Transformers

$11.25 / kg

kg

Bronze Eye Bolts & Bronze Terminals for Transformers

Comprehensive Overview of Bronze Engineered Components

We are a premier manufacturer and exporter of precision-engineered Bronze Eye Bolts and Bronze Terminals for Transformers from India. For decades, we have supplied critical bronze components to the global marine, oil & gas, power distribution, and heavy engineering sectors. Our state-of-the-art foundry and machining facility specializes in producing high-integrity bronze eye bolts using hot forging and precision machining, and high-conductivity transformer terminals through advanced casting and CNC processes. Our expertise encompasses working with various bronze alloys, including C95400 Aluminum Bronze for exceptional strength and corrosion resistance, C86300 Manganese Bronze for high load-bearing capacity, and C11000 Electrolytic Tough Pitch Bronze for superior electrical conductivity. All our products are manufactured under a rigorous quality management system compliant with ISO 9001:2015, with full traceability from raw material to finished product.


Bronze Eye Bolts – High-Strength, Non-Sparking Lifting Solutions

Bronze Eye Bolts are specialized lifting components designed for use in corrosive, marine, and hazardous environments where steel components are unsuitable and a non-sparking safety requirement is critical. Manufactured from high-grade bronze alloys, these eye bolts provide substantial strength while being inherently corrosion-resistant and non-magnetic.

Applications of Bronze Eye Bolts

  • Marine & Offshore: Deck fittings, rigging components, and equipment lifting in saltwater environments.

  • Oil & Gas: Lifting in refineries, petrochemical plants, and offshore platforms where non-sparking tools are mandatory.

  • Chemical Processing: Equipment handling and maintenance in corrosive atmospheres.

  • Explosive Atmospheres (ATEX): Essential for zones where sparks from ferrous metals could cause ignition.

  • Power Generation: Lifting in switchyards and around sensitive electrical equipment due to non-magnetic properties.

Bronze Alloy Specifications for Eye Bolts

Bronze Alloy International Designation Key Properties Typical Applications Standards
C95400 Aluminum Bronze UNS C95400, CuAl10Fe5Ni5 Excellent corrosion resistance, high strength, good wear resistance General marine hardware, chemical plant lifting, high-corrosion environments ASTM B150, ASME SB150, DIN 17660
C86300 Manganese Bronze UNS C86300, CuZn25Al5Fe5Mn5 Very high tensile strength & hardness, excellent load-bearing capacity Heavy-duty lifting in construction, mining, and shipbuilding ASTM B150, ASME SB150, MIL-B-21220
C93200 Bearing Bronze UNS C93200, SAE 660 Good machinability, high compressive strength, excellent bearing properties General purpose industrial eye bolts where shock resistance is needed ASTM B22, ASME SB22, SAE J461

Bronze Eye Bolt Technical Specifications

Parameter C95400 Aluminum Bronze C86300 Manganese Bronze C93200 Bearing Bronze
Tensile Strength (MPa) 655 760 240
Yield Strength (MPa) 275 345 125
Recommended Working Load Limit (WLL) 60-80% of Shoulder Eye Bolt 60-80% of Shoulder Eye Bolt 60-80% of Shoulder Eye Bolt
Non-Sparking Property Yes Yes Yes
Corrosion Resistance Excellent Very Good Good
Machinability Rating Fair (3/5) Fair (3/5) Excellent (5/5)

Manufacturing & Quality Assurance

Our bronze eye bolts are manufactured through a controlled process: Alloy Melting in induction furnaces → Hot Forging for grain structure integrity → Machining on CNC lathes and milling centers → Thread Rolling for superior thread strength → Quality Inspection including Dimensional checks → Proof Load Testing (each eye bolt is tested to 2x its WLL) → Certification & Marking.


Bronze Terminals for Transformers – High-Conductivity, Reliable Connections

Bronze Transformer Terminals are critical components designed to provide a reliable, high-conductivity interface between the transformer windings and external cables. Bronze offers an excellent balance of conductivity, mechanical strength, and corrosion resistance, making it ideal for both liquid-filled and dry-type transformers.

Applications of Bronze Transformer Terminals

  • Power Transformers: High and medium-voltage power distribution transformers.

  • Dry-Type Transformers: Cast resin and VPI transformers for indoor and outdoor use.

  • Instrument Transformers: Current Transformers (CTs) and Potential Transformers (PTs).

  • Pad-Mounted Transformers: Underground distribution system connections.

  • Industrial Control Equipment: Connections for reactors, chokes, and other magnetic components.

Bronze Alloy Specifications for Transformer Terminals

Bronze Alloy International Designation Key Properties Typical Applications Standards
C11000 Electrolytic Copper UNS C11000, Cu-ETP Exceptional electrical conductivity (100% IACS) High-efficiency power transformers, busbar connections ASTM B133, ASTM B187, IEC 60028
C51000 Phosphor Bronze UNS C51000, CuSn5 Good spring properties, high fatigue strength, excellent relaxation resistance Vibrational environments, terminals requiring high clamping force ASTM B139, ASTM B159, DIN 17662
C14410 Copper-Zirconium UNS C14410 High strength and conductivity, excellent thermal stability High-temperature transformer applications, resistance welding transformers ASTM B134, ASTM B159

Bronze Transformer Terminal Technical Specifications

Parameter C11000 (ETP Copper) C51000 (Phosphor Bronze) C14410 (CuZr)
Electrical Conductivity (% IACS) 100% 15-18% 90%
Tensile Strength (MPa) 220 – 360 350 – 600 300 – 400
Yield Strength (MPa) 69 150 – 550 250 – 350
Corrosion Resistance Excellent Excellent Excellent
Typical Plating Tin, Silver, Nickel Tin, Silver Tin, Silver

Manufacturing & Quality Assurance

Our bronze terminals are produced with precision: Continuous Cast Bronze Bar Stock → CNC Turning & Milling to exact OEM dimensions → Drilling & Tapping of threaded holes → Surface Plating (Tin/Silver) for enhanced conductivity and corrosion resistance → Dimensional Inspection using CMM → Conductivity Testing using eddy current or micro-ohmmeters → Helium Leak Testing (for sealed terminals) → Final Certification & Packaging.


Frequently Asked Questions (FAQ)

Q1: Why choose bronze eye bolts over steel eye bolts?
Bronze eye bolts are essential in corrosive (marine, chemical) and hazardous (oil & gas, explosive atmospheres) environments because they are corrosion-resistant and non-sparking. They are also non-magnetic, making them ideal for use around sensitive electrical equipment.

Q2: What is the Working Load Limit (WLL) of your bronze eye bolts?
The WLL varies based on the alloy, thread size, and eye bolt design (shoulder pattern vs. machine screw). Each eye bolt we ship is clearly marked with its WLL and is supplied with a certified proof load test report. Our engineering team can provide precise WLL charts for your specific application.

Q3: Are bronze transformer terminals as good as copper?
For many applications, yes. While pure copper (C11000) offers the highest conductivity, bronze alloys like Phosphor Bronze provide significantly higher mechanical strength, better thread integrity, and superior resistance to relaxation (loosening under vibration), making them a more reliable and durable choice in demanding environments.

Q4: Can you manufacture custom bronze terminals to our OEM drawings?
Absolutely. We specialize in producing custom bronze terminals to exact OEM specifications. We can replicate existing designs or provide engineering support to optimize your terminal for performance and manufacturability. Send us your drawings for a prompt quotation.

Q5: What plating do you recommend for bronze transformer terminals?
Electro-tin plating is the most common and cost-effective, providing good corrosion resistance and solderability. Silver plating is recommended for high-temperature applications or where the lowest possible contact resistance is critical. We provide both options.


Why Choose Our Bronze Components?

  • Three Decades of Expertise: With over 30 years of experience in non-ferrous metal component manufacturing, we possess deep metallurgical and manufacturing knowledge.

  • Full In-House Capability: From our own foundry and forging shop to advanced CNC machining, we control the entire production process, ensuring quality and timely delivery.

  • Material Certification: We provide full traceability with Mill Test Certificates (MTC) for all bronze raw materials, conforming to ASTM and international standards.

  • Rigorous Testing Protocol: Every eye bolt is proof-load tested, and terminals undergo conductivity and dimensional checks. Comprehensive test reports are provided.

  • Global Export Experience: We regularly supply customers across North America, the European Union, the Middle East, and Southeast Asia, understanding international standards and logistics.


Call to Action – Contact Us Today

Ready to secure your supply of high-integrity bronze components? Our technical team is ready to assist you.

  • Request a Quote: Email your specifications, drawings, and quantity requirements to sales@jambrass.com for a detailed quotation within 24 hours.

  • Call Us Directly: Speak with our technical sales team at +91-22-43449300 / +91-22-43449323 (Monday-Saturday, 9:00 AM – 6:00 PM IST).

  • Visit Our Offices:

    • Office Address: 1406, 14th Floor, Dalamal Tower, Nariman Point, Mumbai – 400021, Maharashtra, India

    • Factory Address: Plot 10B, GIDC Industrial Estate, Shanker Tekari, Udyognagar, Jamnagar, Gujarat, India – 361004

  • Prototype Services: Inquire about our rapid prototype services for design validation.

We look forward to becoming your trusted partner for critical bronze engineered components.

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