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CNC Machining Services
Get precision bronze components for complex geometries and difficult-to-machine alloys.
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FastPreci provide a full range of CNC processes for bronze components, from simple to complex geometries.
FastPreci offer 3-axis , 4-axis, and 5-axis milling for flat surfaces and complex geometries.
We use multi-axis centers for bushings, shafts, and other round geometries.
Grinding is used where seal surfaces and micron-level tolerances are required.
EDM handles features conventional rotary tools cannot easily produce.
Achieving ±0.005 mm requires machine stability, process control, and in-process verification at every stage.
Doosan and Makino machines are built on solid cast iron bases, providing the structural rigidity needed to eliminate vibration during cutting.
Hydraulic arbors ensure uniform clamping pressure. Since bronze is softer than steel, conventional clamping may cause deformation. Hydraulic fixturing helps maintain roundness during machining.
Solid carbide tools with high rake angles are used across all bronze grades. This helps reduce cutting forces, control heat buildup, and maintain dimensional stability during machining.
70 bar through-spindle coolant removes heat at the cutting zone and helps maintain dimensional consistency during machining.
Touch probes integrated into the machine measure critical features during machining. When deviations are detected, the system applies compensation to ensure consistent batch results.
The machining environment is maintained at 20°C to minimize thermal variation. Materials are conditioned for 24 hours before machining to ensure stable machining conditions.
The specified surface finish directly impacts part function, appearance, and assembly fit. FastPreci offers the following finishing options for CNC machined bronze components:
Standard CNC-machined finish with visible tool marks and Ra 0.8 µm surface roughness, the most cost-efficient option when no additional processing is required.
Manual polishing process used to achieve a mirror-like surface finish. Typically applied to high-end visual or architectural components.
Uses abrasive media in a vibrating chamber to remove burrs and smooth edges. Efficient for high-volume production batches.
Uses fine glass beads to create a uniform matte surface. It reduces tool marks and produces a consistent, non-reflective surface finish.
Applies a uniform nickel layer to improve surface hardness and wear resistance. Commonly used for sliding or high-friction metal contact parts.
Tin coatings enhance solderability and provide corrosion resistance in high-moisture environments, commonly used for soldered assemblies.
Forms a protective layer that reduces oxidation and corrosion while slowing natural patina formation.
This chemical conversion coating provides a uniform black finish. While primarily aesthetic, it offers mild corrosion resistance without altering part dimensions.
Bronze is a copper-based alloy containing aluminum, silicon, or lead to adjust strength, wear resistance, and machinability, which affects chip formation, tool wear, heat generation, and machining precision.
A widely used alloy for bushings and sliding contact components.
High-strength Lead-free alloy used in marine and harsh environments.
Widely used in heavy-duty mechanical and structural applications.
Commonly used for springs, clips, and electrical contacts.
Marine-grade alloy with high corrosion resistance and good weldability.
High strength copper alloy for structural and load-bearing parts.
Alloy | Composition | Machinability (Relative) | Tensile Strength | Primary Applications |
C932 (SAE 660) | Cu 83%, Sn 7%, Pb 7% | 70% | 240 MPa | Bushings, Bearings |
C642 | Cu 91%, Al 7%, Si 2% | 60% | 515 MPa | Marine components, Valves |
C954 | Cu 85%, Al 11%, Fe 4% | 20% | 620 MPa | Heavy Duty Gears |
C510 | Cu 95%, Sn 5%, P 0.2% | 20% | 470 MPa | Electrical Springs |
C863 | Cu 63%, Zn 25%, Mn 3% | 8% | 760 MPa | Bridge Bearings |
FastPreci delivers CNC acrylic components for demanding industries where precision and clarity are critical.
We produce high-purity, reliable bronze components for clinical systems.
We supply high-strength bronze components for structural and mechanical aerospace systems.
We machine phosphor bronze components for electrical and interconnect applications requiring high conductivity.
Our machining ensures tight tolerances for high-frequency testing and assembly.
We produce durable bronze parts for continuous industrial operation.
We machine wear-resistant bronze components for precision motion systems and automated assemblies.
FastPreci is ISO 9001:2015 certified. We perform inspections using a Coordinate Measuring Machine (CMM) with a ruby-tip probe. Full 3D dimensional reports are available upon request to ensure traceability.
For critical bore dimensions held to ±0.005 mm, we use air gauging. This method measures the gap between the gauge and the bore wall using a calibrated air flow. It offers higher precision and repeatability than contact gauging, making it the preferred method for high-precision internal diameters.
The table below compares key properties of bronze, brass, and copper materials commonly used in CNC machining.
| Property | Bearing Bronze (C932) | Free-Cutting Brass (C360) | ETP Copper (C110) |
| Tensile Strength | 210 – 240 MPa | 330 – 350 MPa | 220 – 300 MPa |
| Hardness (Brinell) | 65 – 75 HB | 80 – 90 HB | 40 – 50 HB |
| CoF (Dry) | 0.15 – 0.22 | 0.30 – 0.35 | 0.40 – 0.50 |
| Corrosion Resistance | Excellent | Moderate | Excellent |
| Relative Cost | ~1.5x | 1.0x (Baseline) | 1.2x – 1.4x |
Bearing bronze remains the preferred choice for applications requiring low friction, wear resistance, and long-term performance under load.
Lead times as fast as 3 days. We accelerate your R&D and production cycles, helping you meet tight project deadlines without compromising quality.
Tolerances as tight as ±0.005 mm. Leveraging advanced 5-axis, mill-turn, and precision grinding machines, we consistently meet the most rigorous dimensional requirements.
Deep knowledge of bronze alloys, including challenging grades like C642 Silicon Bronze. We understand how different materials behave under stress to ensure optimal performance.
Built on Doosan and Makino platforms. Our high-stability machines combined with 70-bar through-spindle coolant ensure exceptional consistency and superior surface integrity.
ISO 9001:2015 certified. Our QA process features CMM inspection with ruby-tip probes and air gauging for critical bores, with full 3D dimensional reports available upon request.
Every project undergoes a comprehensive Design for Manufacturability (DFM) review. We identify technical risks early and provide actionable guidance on material and process optimization.