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Gunmetal Bush
Manufacturer,Stockist and Exporter of Gunmetal Bush
Gunmetal Bushes manufactured by Sumer Metal Industries Private Limited are precision-engineered bushes produced from high-quality gunmetal alloy for demanding bearing and wear-resistance applications. Designed for smooth rotary and sliding motion, these bushes combine excellent corrosion resistance with good machinability, making them ideal for marine fittings, pumps, valves, industrial gear assemblies and heavy-duty agricultural equipment. Sumer Metal Industries positions itself not only as a manufacturer but also as a reliable supplier and exporter, ensuring consistent metallurgy and dimensional control for international customers.
Sumer Metal Industries exports its gunmetal bushes to markets including Oman, Qatar, Saudi Arabia, the UAE, Kuwait, Spain, Germany, the USA, Canada and several regions across Africa. For these export markets the company offers customized sizes, bore finishes (re-lapped, honed), and tolerance grades to meet importers’ drawing specifications or international standards. Their quality assurance typically includes chemical analysis certificates, hardness testing and dimensional inspection reports to comply with buyers’ purchasing and inspection requirements.
In terms of performance, the gunmetal bushes are formulated to provide a balance between strength and ductility. They resist seizure under moderate loads and exhibit good fatigue resistance in oscillating and rotating service. The alloy’s inherent ability to form a protective oxide layer helps the bushes withstand marine atmospheres and mildly corrosive environments, which is why buyers in coastal Middle East and African markets commonly specify gunmetal for shaft bearings and pump components.
Sumer Metal Industries offers a range of finishing and treatment options — bright machined, tin-plated for additional corrosion protection, and oil-impregnation for self-lubricating performance where specified. The company’s production workflow includes CNC turning, precision boring to tight tolerances, and optional reflow/anneal cycles to refine mechanical properties. Their export packaging is designed for long sea shipments: oil-coating, plastic wrapping, and wooden crates or palletized boxes to protect finished parts during transit.
From a commercial perspective, Sumer Metal Industries emphasizes traceability and documentation: each batch shipped abroad can be accompanied by a mill test certificate (MTC), packing list, and export compliance paperwork. Lead times, minimum order quantities and pricing are provided per quotation and vary by finish and size; however, the firm is accustomed to handling both one-off engineering runs for OEMs and larger repeat production lots for distributors in the USA, Europe and the Gulf region.
Buyers interested in replacing existing bushes with Sumer Metal Industries’ gunmetal parts are advised to supply the required dimensions, load conditions and operating environment; the manufacturer will recommend the proper alloy variant, surface finish and machining tolerances. The company also supports sample runs and quality checks at the customer’s nominated third-party inspection agency to ensure that the bush meets functional and regulatory needs of the destination market.
Gunmetal bushes from Sumer Metal Industries Private Limited are precision-engineered bearing components made from high-quality gunmetal alloys designed for demanding industrial and marine applications. Built to deliver smooth rotary and sliding motion, these bushes balance corrosion resistance, wear life and machinability to suit pumps, valves, winches and gear assemblies.
Manufactured with tight dimensional control, each bush undergoes CNC turning, precision boring and optional honing to meet exact bore tolerances and surface finish requirements. Sumer Metal Industries offers standard tolerance classes as well as bespoke tolerances per customer drawings, ensuring interchangeability with existing assemblies or OEM specifications.
The typical gunmetal chemistry used by Sumer Metal Industries centers on copper–tin alloying with controlled additions of zinc and trace elements; this composition yields a tough, fatigue-resistant matrix with good seizure resistance under moderate loads. Where required, the company can supply chemical analysis (certificate) showing exact elemental percentages to satisfy purchaser material verification.
Mechanically, these gunmetal bushes exhibit a favorable combination of tensile strength, ductility and hardness that enables reliable performance in oscillating and rotating services. Typical mechanical properties are optimized through controlled casting and optional annealing cycles to achieve intended yield strength and elongation while preserving machinability.
Specification Of Gunmetal Bush
| Property | Specification |
|---|---|
| Material | Gunmetal (Cu-Sn-Zn Alloy) |
| Standard | IS 318 / ASTM B505 / BS 1400 |
| Type | Cylindrical Bush / Sleeve Bush |
| Application | Bearings, Pumps, Valves, Industrial Machines |
| Finish | Machined / Polished |
| Dimensions | As per customer requirement / standard sizes available |
| Temperature Range | -50°C to 250°C |
| Corrosion Resistance | High resistance to wear and corrosion |
Sumer Metal Industries recognizes marine and coastal markets among its primary customers, so its gunmetal bushes are often surface-treated — tin-plating, bright machining, or oil impregnation — to boost corrosion protection and reduce fretting in salt-laden atmospheres. For self-lubricating needs, oil-impregnated variants are available to extend maintenance intervals where grease feeding is limited.
Quality assurance is integral: each production lot can be accompanied by mill test certificates (MTC), dimensional inspection reports and hardness readings. The company also facilitates third-party inspections at the buyer’s nominated agencies, which is particularly important for export compliance and high-integrity applications.
Sumer Metal Industries exports gunmetal bushes across the Middle East and beyond — Oman, Qatar, Saudi Arabia, the UAE and Kuwait — and into Europe and North America, including Spain, Germany, the USA and Canada, as well as several regions across Africa. Their export packaging is sea-freight ready, with oil-coating, plastic wrapping and wooden crates or palletization to protect finished parts during long transit.
A broad size range is offered, from small-diameter bushings for instrumentation to large liners for industrial shafts; custom lengths, stepped bores and flanged options are routinely produced to customer drawings. The plant supports one-off prototype runs for OEM development as well as higher-volume repeat production for distributors and aftermarket suppliers.
Chemical Properties Of Gunmetal Bush
| Element | Percentage (%) |
|---|---|
| Copper (Cu) | 83 - 88 |
| Tin (Sn) | 5 - 10 |
| Zinc (Zn) | 2 - 5 |
| Lead (Pb) | 0.5 - 3 |
| Iron (Fe) | 0.05 - 0.5 |
| Nickel (Ni) | 0.05 - 0.3 |
Sumer Metal Industries provides application support to help customers choose the correct alloy variant and finish based on load, speed, shaft material and operating environment. Their engineering team will advise on clearance tolerances, run-in procedures and whether a split- or full-section bush is most appropriate for installation and future servicing.
Installation guidance and maintenance recommendations come with supply: correct press-fit allowance, alignment checks and lubrication practices are specified to maximize service life and reduce the risk of shaft scoring or premature wear. For critical rotating machinery, they recommend routine inspection intervals and simple non-destructive checks that can detect early wear patterns.
Sustainability and material stewardship are considered in their process: efficient machining with minimal scrap, responsible disposal of cutting fluids and the option to remelt and reuse in-house swarf where feasible help reduce material waste. Customers with circular-economy goals can request material-return programs for end-of-life components.
Mechanical properties Properties Of Gunmetal Bush
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 350 - 450 | MPa |
| Yield Strength | 200 - 250 | MPa |
| Elongation | 10 - 25 | % |
| Hardness (Brinell) | 80 - 120 | HB |
| Density | 8.3 - 8.8 | g/cm³ |
| Shear Strength | 250 - 300 | MPa |