Wrapped Bronze Bushes
Homogeneous Bronze Bushes

Oilite Bushes India

Wrapped Bronze Bushes : Manufacturer and Exporter in India.

Wrapped Bronze Bushes are precision-engineered plain bearings manufactured by cold-forming a homogeneous bronze strip into a cylindrical bush shape, hence the term "wrapped." The base material used is tin bronze alloy CuSn8, a cold-formable homogeneous bronze that delivers unique mechanical properties including impressive fatigue strength, corrosion resistance and reliable wear performance. The cold-forming process preserves the integrity of the alloy, resulting in a dimensionally accurate bush with consistent wall thickness. Because of their thin wall construction, these bushes offer an economical yet high-performance solution for bronze bearing applications, combining high load capability with low abrasion under demanding conditions.

The distinctive feature of wrapped bronze bushings is their lubrication-friendly design. The bearing surface incorporates diamond-shaped lubrication indents that serve as lubricant reservoirs. These reservoirs help build a protective lubricating film quickly at the start of movement and significantly reduce running friction. Perforated variants offer an enhanced lubrication system. The holes provide additional space for lubricant storage, helping extend maintenance intervals and improve long-term performance. An initial grease application during installation, followed by periodic re-greasing, keeps these bushes running efficiently with minimal upkeep.

These low-maintenance bronze plain bearings operate reliably in tough environments. Their ability to handle impact loads, resist corrosion and perform efficiently under rough working conditions makes them a preferred choice in construction machinery, agricultural equipment and truck cranes, anywhere high load and low-to-moderate speed are the operational norm. From heavy-duty machinery to structural pivot applications, wrapped bronze bushes deliver consistent performance at a cost-effective price.

Case Study :

A private engineering company assigned a critical bearing replacement project to Bearing Engineering Corporation, a leading wrapped bronze bushes manufacturer and supplier in Mumbai, India. The project involved CuSn8 bronze bushes (91.5% copper, 8% tin) with bore sizes from 5mm to 150mm and wall thicknesses of 0.75mm–3.5mm. Designed for loads up to 60 N/mm², speeds up to 0.5 m/s and temperatures from -40°C to +120°C, the solution delivered excellent results, earning complete client satisfaction.

Advantages :

  •   High Radial Strength : Cold-formed CuSn8 bronze construction withstands intense radial forces without compromising accuracy under continuous operation.
  •   Extended Service Life : Excellent fatigue resistance combined with low abrasion properties keeps these plain bushings performing reliably across prolonged cycles.
  •   Friction Reduction : Diamond-shaped lubrication pockets rapidly build a protective film, significantly cutting startup friction in slow-moving mechanical assemblies.
  •   Adaptability : Naturally resistant to moisture, dust and impact loads, making them ideal for demanding outdoor and construction machinery conditions.
  •   Minimal Downtime : Reduced greasing requirements mean machinery stays operational longer, lowering maintenance costs in agricultural and industrial equipment.
  •   Economical Design : Efficient bush design maximizes material efficiency, delivering a budget-friendly and structurally strong bronze bearing solution for diverse engineering needs.

Technical Specifications :

  •   Base Material : Cold - formed homogeneous tin bronze alloy CuSn8 (copper 91.5%, tin 8%, other elements 0.5%).
  •   Wall Thickness : Cold-formed homogeneous tin bronze alloy CuSn8 (copper 91.5%, tin 8%, other elements 0.5%).
  •   Bore Diameter Range : Available from 5mm up to 150mm in standard and custom configurations.
  •   Operating Temperature : Performs reliably between -40°C to +120°C under continuous lubricated conditions.
  •   Load Capacity : Handles static loads up to 60 N/mm² and dynamic loads up to 40 N/mm².
  •   Sliding Speed : Maximum permissible sliding speed reaches up to 0.5 m/s under lubricated operation.
  •   Hardness : Achieves a material hardness of approximately 80 - 100 HB (Brinell).

Application Industries :

  •   Construction Industry
  •   Agriculture Industry
  •   Automotive Industry
  •   Mining Industry
  •   Quarrying Industry
  •   Material Handling Industry
  •   Earthmoving Industry
  •   Manufacturing Industry
  •   Engineering Industry
  •   Industrial Machinery Industry
  •   Textile Industry
  •   Printing Industry
  •   Packaging Industry
  •   Marine Industry
  •   Forestry Industry

Frequently Asked Questions (FAQs)?

Q1: What material is used in manufacturing wrapped bronze bushes?

A1: They are cold-formed from homogeneous tin bronze alloy CuSn8, comprising 91.5% copper and 8% tin.

A2: They support static loads up to 60 N/mm² and dynamic loads up to 40 N/mm².

A3: They perform reliably between -40°C and +120°C under continuously lubricated conditions.

A4: Construction, agricultural, automotive, mining and material handling industries widely rely on them.

A5: Their high radial strength, low abrasion and impact resistance make them ideal for demanding conditions.

A6: Yes, regular greasing is enough, significantly reducing downtime and maintenance costs.

A7: Yes, bore diameters range from 5mm to 150mm in standard and custom configurations.

A8: Yes, CuSn8 composition facilitates superior anti-corrosive properties even in moisture-exposed environments.

Contact Us :

Looking for dependable Wrapped Bronze Bushes for demanding industrial applications? Bearing Engineering Corporation, Masjid Bunder, Mumbai, has been manufacturing and exporting precision-engineered bushes and bearing solutions since 1997. With custom manufacturing capabilities and consistent quality standards, we deliver reliable products as per your functional requirements. Contact our team today for technical assistance or a competitive quotation.



WB802-bearings with or without flange are intended for radial and axial movements. The bearings are wrapped of a cold formable homogenous bronze, which because of this will obtain exceptional material properties. The execution of the flange permits that the bearing also can carry axial loads. The standard sizes are fitted with holes, which are dispersed in a special way over the whole bearing-surface.

These holes serve as lubri-cant reservoirs i.a. to rapidly build up a lubrication film in the moment of start and therewith reduce the start friction. These holes even length-en significantly the lubrication intervals. The properties of the WB802-material, together with the procedure of wrapping and calibration, make this type of bearing especially suitable for constructions, where high loads and relatively slow movements are occurring.

Oilite Bushes India

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