Bronze Bushing C85700 Custom Bearing
Custom C85700 Brass Bushing Manufacturer
Purchase high-quality C85700 leaded manganese brass bushings engineered for exceptional load-bearing performance. We offer both custom and OEM production to meet your exact specifications.
Searching for C85700 (CuZn37Pb) brass bushings? Our expertise includes centrifugal casting and precision machining for both standard sizes and large-dimension bronze bearings. We also provide graphite-plugged, solid-lubrication solutions for enhanced wear resistance. Send us your drawings today and receive a customized quote!
C85700 High-Strength Brass Bushings – OEM & Custom Sizes
Why Choose C85700 / CuZn37Pb?
C85700 (ASTM standard) and its European equivalent CuZn37Pb are part of the Leaded Brass family. While many engineers default to expensive Tin Bronzes or Aluminum Bronzes, C85700 offers a strategic advantage in specific scenarios.
The “Free-Cutting” Advantage
The defining characteristic of C85700 is the addition of Lead (Pb). Lead does not dissolve in the copper-zinc structure; instead, it remains as discrete globules.
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Result: These globules act as chip breakers and internal lubricants during machining.
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Benefit: This allows us to produce complex, high-precision bushings with superior surface finishes at a lower cost than harder bronzes.
Material Selection Comparison Matrix
To help you decide if C85700 is right for your project, we have compared it against other common alloys using a contrasting logic table:
| Feature | C85700 (CuZn37Pb) | C93200 (SAE 660 Tin Bronze) | C95400 (Aluminum Bronze) |
| Primary Use | Marine hardware, decorative fittings, medium-load bushings. | General-purpose bearings, standard industrial wear parts. | High-load, heavy construction machinery, aerospace. |
| Machinability | Excellent (100%) | Good (70%) | Difficult (20-30%) |
| Corrosion Resistance | Good (Resistant to fresh/salt water) | Moderate | Excellent |
| Cost Efficiency | High (Lower material & machining cost) | Medium | Low (Expensive material & machining) |
| Load Capacity | Medium | Medium-High | Extreme |
| Self-Lubrication | Good (due to lead content) | Excellent | Poor (Requires constant grease) |
The Verdict: If your application involves extreme heavy loads (like an excavator arm), choose Aluminum Bronze. However, for marine adapters, valve seats, and general machinery where complex geometry and cost-efficiency are paramount, C85700 is the superior choice.
Applications: Where is the C85700 brass bushing used?
With excellent corrosion resistance and a naturally attractive appearance that polishes to a rich yellow-gold finish, C85700 brass is commonly used across multiple industries:
Fluid & Piping Systems
Ideal for valve seats, pipe adapters, plumbing fittings, and components requiring high corrosion resistance.
Marine Industry
Used for ship hardware, stern tubes, and parts exposed to non-structural but highly corrosive marine environments.
Automotive & Instrumentation
Perfect for sensor housings, precision instrument bushings, and small mechanical components.
General Engineering
Applied in lock mechanisms, gears, wear plates, and other engineered parts requiring durability and machinability.
Partner with a C85700 Brass Bushing Specialist
Why trust us with your drawings?
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Speed: We stock raw materials for urgent rough machining and finishing.
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Technical Consulting: Not sure if C85700 is right? Our engineers calculate loads and speeds to recommend the perfect alloy.
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Global Logistics: Professional packaging for heavy bronze parts ensures they arrive damage-free, anywhere in the world.
Ready to Optimize Your Machinery?
Don’t let wear and tear dictate your production schedule. Whether you need a self-lubricating graphite bushing or a large-diameter centrifugally cast ring, we manufacture to your exact print.
Send your drawings to: una@viiplus.com
Get a material selection guide today!
Technology Upgrade for C85700 Brass Bushing: The Advantage of Solid Lubrication (Graphite Plugged)
Traditional oil lubrication has a major limitation—once the oil film breaks, metal-to-metal contact can quickly damage the shaft. To overcome this, our C85700 brass bushings are available with advanced Inlaid Solid Lubrication (Graphite Plugged) technology.
How Our Solid-Lubricated C85700 Brass Bushings Work
We begin by precision-drilling lubrication pockets into the C85700 brass bushing body following an engineered geometric pattern. High-performance graphite lubricant plugs are then securely press-fitted into these pockets, forming a permanent, self-lubricating system.
Oil Lubrication vs. Graphite-Plugged C85700 Brass Bushing
| Scenario | Standard Oil Lubrication | Graphite-Plugged C85700 Brass Bushing |
|---|---|---|
| High Temperature | Oil thins, leaks, or evaporates. | Graphite stays stable and effective. |
| Idle Periods | Oil drains away, causing dry starts. | Solid lubricant remains on the shaft and protects instantly. |
| Dust / Dirt | Oil attracts contaminants and creates abrasive paste. | Graphite is dry and naturally repels debris. |
| Maintenance | Requires frequent greasing. | Maintenance-free, self-lubricating operation. |
The Result
A protective graphite transfer film forms on the mating shaft, delivering long-lasting, low-friction performance even without additional lubrication.
Manufacturing Capabilities: Large-Scale Production & Full Customization
We do not follow a “one-size-fits-all” model—our strength lies in Make-to-Print and fully customized production for bronze and brass bushings.
A. Centrifugal Casting vs. Sand Casting
For large copper and brass bushings, the casting process is critical. That’s why we rely on Centrifugal Casting.
Why It Matters:
During high-speed rotation, G-force pushes molten metal toward the outer mold wall. Lighter impurities and air pockets are forced to the center, which is later removed during machining.
The Result:
A dense, strong grain structure with zero porosity, ensuring superior strength and resistance to cracking under load.
B. Wide Size Capabilities
Whether you require a compact precision sleeve or a heavy-duty industrial ring, we offer an extensive size range:
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Inner Diameter (ID): 10 mm – 1500 mm
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Outer Diameter (OD): 20 mm – 1800 mm
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Single Piece Weight: 0.1 kg – 3000 kg
C. Common Custom Configurations
We support a variety of bushing designs to meet your application needs:
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Flanged Bushings: Built-in flange for enhanced axial load support.
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Split Bushings: Two-piece construction for easy installation without dismantling shafts.
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Custom Oil Grooves: Spiral, Figure-8, or circular grooves tailored to your lubrication system.
Factory Price & fast delivery
Custom-size brass bearing
High-quality brass bushings designed for excellent machinability, wear resistance, and durability. Ideal for industrial and mechanical applications.
