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Casting Bronze Bushing, 2.1090 DIN

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European Equivalent Grade: CuSn7Zn4Pb7-C – Copper-Tin-Lead Alloy. Chemical Composition And Properties Of European Equivalents For 2.1090.03, The Most Common Bronze Alloy Is CuSn7Zn4Pb7 (CC493K), Also Known As Rg7 Or Gunmetal.

The benefits of oilless bronze bearings

Cast Bearing – Search Bushing Bronze At Viiplus

Casting bronze bushing alloys have been used for centuries in a broad spectrum of bearing applications. Other bearing materials have been unable to match their versatility. Casting Bronze bearings are recommended for medium to heavy loads, impact, and temperatures.

Made from U.S. Mill certified C93200 SAE 660 bearing bronze stock. This material is resistant to impact, wear, and corrosion, and has superb anti-friction properties. It also has excellent machinability, meaning a high-quality surface finish can be achieved.

cast bronze bushing, bronze sleeve bearing
low friction cast bronze bearing

High Quality Casting Bronze Bushing’ Material

High-quality services – performance-based prices – simple solutions–flawless products. We offer an extensive range of casting bronze bushing and excellent customer service. Get high-quality casting bronze bushing。 Powerful and Easy to Use.

Bronzeoilless.com’s casting capabilities include Continuous casting and Centrifugal casting.

Choose casting bronze bushing material that suits your products.

Generally, we will use bronze as the raw material, Bronze is strong and versatile, making it the material of choice for many sacrificial bushings. Bronze bushings and wear pads have long lifespans and resist shock, impact, wear, and corrosion. also, you can make Phosphor Bronze & Aluminum Bronze & Silicon Bronze bushing.

The benefits of oilless bronze bearings

The Applications of casting bronze bushings

Heavy-duty equipment: The hardness and impact resistance of casting bronze bushings make them ideal for use in a range of construction, agricultural, and industrial equipment requiring high reliability in harsh environments.
Hydraulic machinery: With its heat resistance and exceptional mechanical properties, bronze cast bearing are perfect for supporting components in the cylinders and motors of hydraulic machinery.
Power transmission components: Casting bronze bushings help improve the efficiency and performance of critical components used in power transmission applications:
Aerospace systems: Cast bearing help reduce weight and enhance the performance of mechanical moving parts in various aircraft systems.
Manufacturing tools and equipment: The bronze alloys used in casting bronze bushings give them the strength and wear-resistance to support components in stamping dies, presses, and other tools and equipment used in the manufacturing industry.

flange cast bronze bushing with groove
cast sleeve bronze bushing


Die Cast Bushing | CNC Processing

As friction-reducing components, it is essential that casting bronze bushings are constructed from wear-resistant materials that provide good sliding properties. While bushings can be fabricated from a variety of plastics and metals, bronze provides several distinct advantages over alternative options in heavy-load applications.

As an inherently moldable and easy-to-machine material, bronze is well-suited for achieving a range of bushing designs.

The bronze alloy used in casting bronze bushings undergoes a continuous or centrifugal casting process, giving the metal a finer grain structure and improved mechanical properties. The bronze alloy cast bar is then cut and processed into the finished bushing using a computer numerical control (CNC) lathe or other precision machining method. Casting bronze bushings exhibit excellent structural strength, durability, and resistance to compressive forces, making them well-suited for harsh, high-wear applications. They can also withstand high temperatures without losing their strength.

Reliable China CAST BRONZE BEARING Supplier

Cast bearing Sleeve Bushings | Factory Price

Casting bronze bushing online shop! Unveiling our latest bronze bushing masterpiece! Don’t miss out on the action, email us for more!

The benefits of oilless bronze bearings

Professional Casting Bronze Bushing With Grooves

We are specialists in cutting lubrication grooves in virtually any pattern. Such as common groove patterns available are figure eight, double figure eight, loop, double loop, circular, wick or straight.Any of these grooves can be contained within the length of the part or breaking out the ends. Call us for assistance in determining which pattern is most appropriate for your application. There are industry standard groove patterns that are available for different applications.

casting bronze bushing
casting bronze bushings, guide bushing


Grooved Bronze Sleeve Bearings | China Supplier

Machined casting bronze bushings offer technically and economically favorable bearings solutions. It is with high load capability, low weight, and good corrosion resistance. Viiplus can offer different types of bronze alloys according to the required lifetime, service…etc. The tolerance is much tighter than wrapped bronze bushes. Please contact us to learn more about how our bearings can benefit your business.

cnc processing, cast bronze bushing

Why Do Casting Bronze Bushing Need Grooves?

Because the casting bronze bushing has the advantages of large bearing capacity, small radial size, and low price, most of the casting bronze bushing are used as sliding bearings in equipment with low speed and heavy load, and harsh mechanical working environment. In the main transmission system of the tire vulcanizing machine, all mechanical transmissions from the worm gear reducer use copper sleeves as sliding bearings. However, the copper sleeve has a large frictional resistance and is easy to wear and fail.

Bearing With Groove – Self-lubricating

Therefore, in addition to ensuring the quality of the material selection and processing, good lubrication is essential when using the copper sleeve. To ensure good lubrication, in addition to selecting a good lubricant, there must be a suitable oil groove to store the lubricating grease and evenly spread the entire lubricating surface, to form an oil film with a certain bearing capacity and reduce friction and mechanical wear. Therefore, the role of the oil tank is particularly important.

Cast Sleeve Bronze Bushing With Groove

Your Partner for Standard and special bearings

processing cast bronze bearing

A bushing, also known as a plain bearing, is designed to reduce friction between two surfaces as they slide against one another. In machines and equipment with rotating or sliding shafts, bushings are used to enhance overall efficiency and longevity while reducing noise and vibration. They generally come in the following two styles:

Sleeve bushings. Sleeve bushings are cylindrical in shape, featuring straight inside and outside diameters.
Flanged bushings. Flanged bushings feature a flange that extends radially outward from one end. The purpose of the flange is to act as a thrust face at one end of the bushing also preventing any axial movement.

grease the groove

Casting Bronze Bushing Material

Bronze: For the custom fabrication of continuous cast bronze bearings, we have an extensive inventory program that includes finger sleeves, flanges, shims, and sliders in many sizes.

casting bronze bushing export

Customize Your Size & Material

The advantages of continuous cast bronze over other production methods are good quality and a competitive price/materials ratio. The most common bronze alloy is CuSn7Zn4Pb7 (CC493K), also known as Rg7 or gunmetal. it has good sliding and dry-running properties and is well-machinable. CuSn12 is a harder alloy with higher wear resistance and is also suitable for use at high sliding speeds. Good corrosion resistance and suitable for use in seawater. We can offer different sizes and alloys upon request!

C93200 (SAE660) Casting Bronze Bushing

Similar or Equivalent Specification

QQ-C-390, E7;
QQ-B-1005, Comp 12
MIL-B-11553, Comp 12Bearing Bronze

Chemical Composition

Chemical Composition according to ASTM B505/B505M-18
1 In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
The C93200 (SAE 660) series of cast bronze sleeves and flanged bushings are made from an all-purpose leaded bronze alloy with excellent antifriction properties and machinability. These bushings exhibit exceptional wear resistance, durability, and shock-loading capabilities, allowing them to provide reliable performance across a long lifespan. Physical properties include:
35,000 psi minimum tensile strength
20,000 psi minimum yield strength
10% minimum elongation in 2″
Brinell Hardness (500 kg load): 65 typical
Machinability Rating: 70
Minimum Operating Temperature: -450°F
Maximum Operating Temperature: 500°F
P-Value Max 4,000
V Value Max 750
PV Value Max 75,000
Bushings & Bars offers the following C93200 (SAE 660) products:
Inch Sleeve Bushings
METRIC Sleeve Bushings
METRIC Flanged Bushings

CuSn7Zn4Pb7 Bronze Material, 2.1090 DIN

StandardEN 1982DIN 1705
Alloy numberCC493K2.1090
Chemical compositionMechanical properties
Cu81,0 – 85,081,0 – 85,0ENDIN
Sn5,4 – 8,05,6 – 8,0Rm≥ 260≥ 270
Zn2,0 – 5,03,0 – 5,0Rp 0,2≥ 120≥ 120
Pb5,0 – 8,05,0 – 7,0A5≥ 12≥ 16
Ni2,0 max.2,0 max.HB≥ 70≥ 70
P0,10 max.0,05 max.
ConditionGC, GZGC
CharacteristicsMost common bronze alloy, also called bearing bronze or gunmetal. Suitable for bronze bearings with medium load, good dry running properties, high wear resistance and machinability. General applications: cylinder and bearing liners, gears and wear strips. Loads up to 4000 N/cm²

C87850 (ECO Bronze) Casting Bronze Bushings

The C87850 (ECO Bronze) series of cast bronze bushings provide an eco-friendly, lead-free alternative to the C93200 (SAE 600) leaded bronze series. ECO Bronze is a RoHS- and REACH-compliant alloy that has been tested through multiple independent laboratories and confirmed to be free of lead, arsenic, and bismuth. In addition to being environmentally safe and cost-effective, ECO bronze is proven to be equal to or better than traditional alloys in terms of quality and performance. Other beneficial properties of this material include:

  • Excellent machinability
  • Non-galling
  • Lightweight
  • Tolerant of high
  • temperatures
  • Excellent impact and
  • compressive strength
  • Resistant to dezincification and stress corrosion
  • 100% recyclable
  • These properties make ECO Bronze cast bronze bushings and thrust washers perfect for meeting the strict safety and/or environmental regulations of the energy, marine, construction, medical, food, and beverage industries.

Mechanical properties of the ECO BRONZE C87850 series include:

  • 65,000 psi tensile strength (minimum)
  • 25,000 psi yield strength (minimum)
  • 8% elongation in 2″ (minimum)
  • Brinell Hardness (500 kg load): 103 typical
  • Machinability Rating: 70
  • Minimum Operating Temperature: -400°F
  • Maximum Operating Temperature: 400°F
  • P Value Max 4,400
  • V Value Max 450
  • PV Value Max 100,000

Bushings & Bars offers the following C87850 (ECO Bronze) cast bronze products:

  • Sleeve Bushings
  • Flanged Bushings
  • Thrust Wash

C96900 casting bronze bushing

C96900 series of cast bronze bushings are made from a continuous-cast, spinodal-hardened alloy with high tensile strength and excellent machinability. This alloy exhibits excellent galling, corrosion, and wear resistance, allowing bushings and thrust washers to last longer and carry higher loads. ToughMet bushings and thrust washers provide performance advantages in a range of demanding industries, including:


  • Mining
  • Aerospace
  • Automotive
  • Heavy equipment
  • Off-road
  • Oil and gas
  • Drilling hardware

Mechanical properties of the ToughMet (C96900) series include:

  • 110,000 psi tensile strength
  • 105,000 psi yield strength
  • 4% elongation
  • Rockwell C 32 typical
  • Machinability Rating: 8
  • Minimum Operating Temperature: -450°F
  • Maximum Operating Temperature: 550°F
  • P-Value Max 20,000
  • V Value Max 500
  • PV Value Max 275,000

The ToughMet series of bushings and thrust washers offer the highest PV rating in the Bushings & Bars catalog. Products include:

  • Sleeve Bushings
  • Flanged Bushings
  • Thrust Washers

Casting Process: Crafting High-Quality Bronze Bushings

Casting is a manufacturing process that involves pouring molten metal into a mold to create a desired shape. In the case of bronze bushings, the casting process is essential to ensure the durability and performance of the final product. Here, we discuss the key steps in casting bronze bushings:

  1. A mold is created using a pattern that matches the exact shape and dimensions of the desired bushing.
  2. High-quality bronze alloys are melted in a furnace to achieve the desired temperature and consistency.
  3. Once the bronze reaches the appropriate temperature, it is poured into the prepared mold.
  4. The molten bronze cools and solidifies within the mold, taking on its intended shape.
  5. After the bronze has solidified, the mold is removed, revealing the newly cast bushing. The bushing is then subjected to various finishing processes, such as trimming, grinding, and polishing, to ensure it meets the required specifications.
casting bronze bushing

High-Quality Bronze Bushings

Benefits of Casting Bronze Bushings

Casting bronze bushings offer numerous benefits, such as:

  • High Wear Resistance: Bronze bushings exhibit excellent wear resistance, making them suitable for high-load and high-speed applications.

  • Low Friction: The low friction properties of bronze bushings result in reduced energy consumption and improved efficiency.

  • Corrosion Resistance: Bronze bushings are resistant to corrosion, making them ideal for use in harsh environments or where exposure to corrosive substances is expected.

  • Customizability: The casting process allows for the creation of bushings with intricate shapes and designs, enabling manufacturers to produce bushings that meet the specific needs of various applications.


Casting Bronze Bushing VS Oil-impregnated Bronze Bushings

Casting Bronze Bushing

Casting bronze bushings are machined from C93200 (SAE 660) bronze for superior performance. The continuous casting process ensures a uniform bronze structure throughout the process bearings are free of porosity and hard particle inclusions common to other casting processes. Standard bearing lines are available in over 900 sizes, these standards provide off-the-shelf economy for most applications and may be easily resized, oil grooved, or graphitized to meet special requirements. In addition to standard sleeve (plain) bearings, the following products are available
-Finished bearings
-Grease or oil groove casting bronze bushing
-Graphite-filled groove bearings
-Graphite-filled plug bearings
-Special alloy bearings

Oil-impregnated Bronze Bushings

Oil-impregnated bronze bushings are characterized by their ability to self-lubricate. This effect is possible due to the powder metallurgical process:

Bronze powder is gravity-filled into a die of the desired bushing size. The powder is then pressed to bond the powder particles together.
The powder particles in the part are then bonded together in a furnace. The furnace temperature is just high enough to bond the particles together without melting the metal.
This sintering process is the key to oil impregnation. Sintering, by its very nature, reduces the porosity of the product as it bonds the powder particles together, but it is possible to control the degree of this process.
In the case of oil-impregnated bronze bushings, the final porosity is maintained at about 25%, which means that tiny interconnected capillaries are still interwoven throughout the material.
To finish the manufacturing process the bushing is then pressed through a calibration set of tools to the required tolerances. The bushing is then vacuum impregnated which forces oil into the interconnected porosity.

The difference between casting bronze bushing and oil impregnated bronze bushing

Oil-impregnated bushings originated as automotive components, however they are used in many other industries. In general, our oil-impregnated bronze bushings are best suited for low to moderate loads, but they do withstand high speeds better than many alternatives. They also work well over a wide temperature range of approximately 10-220°F, which means they are suitable for use in outdoor and industrial environments.

Unlike oil-impregnated bushings, casting bronze bushings are not formed from powder. Instead, they are formed from solid or hollow cast bronze bars that undergo a machining process designed to achieve a precise final shape. The bronze is continuously or centrifugally cast into solid or hollow bars. Casting bronze bushings do not start out as a powder, so they maintain a finer grain structure and thus have higher strength. In general, casting bronze bushings are also stronger, more durable, and more reliable under compression forces. This combination of properties makes casting bushings ideal for applications involving heavier loads.

Upgrade to Our Superior Bronze Bushings Today

We could also produce as per customers’ drawings or requirements. Discover the Secret to Longer-Lasting Machinery with Our Premium Bronze Bushings!