Custom Aluminum Brass Stainless Steel CNC Machining Metal Machining Turning Milling Parts
Customized
Our anodized parts are expertly crafted using the latest machining technology, resulting in a durable and corrosion-resistant finish that exceeds industry standards.
minimum order
1 piece
Quantity
$0.35 - $3.98
/ piece
CNC machining companies are businesses that utilize computer numerical control (CNC) machines to produce high precision and complex parts and components from a variety of materials such as metals,plastics, and composite materials.
| Key Attributes | |
| Machining Capabilities | CNC Machining Processes:Broaching, Drilling, Etching/Chemical Machining, Laser Machining, Milling, Turning, Wire EDM, Rapid Prototyping |
| Materials Supported | Aluminum, Brass, Bronze, Copper, Hardened Metals, Stainless Steel, Steel Alloys, Plastic |
| Micro-Machining or Not | Micro Machining |
| Key Processes | CNC Milling, Turning, Drilling |
| Tolerance Standards | Industry-standard precision |
| Surface Treatments | Anodizing, Plasting, Polishing, etc. |
| Applications | Control Systems, Automotive Components |
| Place of Origin | Guangdong, China |
| Model Number | CUSTOM |
| Service Type | Customized OEM/ODM Manufacturing |
| Drawing Formats | PDF, CAD, IGES, STEP |
| Delivery Time | 7-30 Days |
| MOQ | 10 pcs |
· Product Overview
This Precision Machined Black Metal Sleeve Component is engineered for reliable positioning, sealing, or support in industrial machinery, automation equipment, and mechanical assemblies. Manufactured from high-quality alloy steel via advanced CNC turning and surface treatment processes, it delivers exceptional dimensional accuracy, wear resistance, and corrosion protection—ensuring stable performance in critical applications.
· Core Specifications
- Material:
- Alloy Structural Steel (e.g., 45# Steel) / Carbon Steel: Provides high structural strength, machinability, and load-bearing capacity, ideal for heavy-duty mechanical scenarios.
- Surface Treatment: Black Oxide (Blackening) Finish – Enhances corrosion resistance, wear resistance, and offers a uniform black aesthetic suitable for industrial environments.
- Process Standards:
- CNC Turning: Dimensional tolerance controlled within ±0.02mm, ensuring precise inner/outer diameter consistency, concentricity, and compatibility with mating components.
· Application Scenarios
- Industrial Machinery: Used as bushings, spacers, or mounting sleeves in gearboxes, pumps, and machining centers.
- Automation & Robotics: Serves as structural elements in robotic arms, linear motion systems, and assembly equipment for accurate positioning and load distribution.
- Mold & Tooling: Components for injection molds, stamping dies, and precision fixtures, utilized for part alignment or cavity sealing.
- Hydraulic & Pneumatic Systems: Elements in valves, cylinders, and fluid control units, designed to withstand pressure and ensure structural integrity.
· Production Process Introduction
- Material Preparation: Source certified alloy steel or carbon steel bars, and conduct tests for chemical composition, hardness, and dimensional consistency.
- CNC Turning: Utilize CNC turning machines to shape the sleeve, machining inner/outer diameters, steps, and other features with micron-level precision.
- Surface Treatment: Undergo black oxide (blackening) process to form a protective layer, enhancing corrosion resistance and achieving the black finish.
- Quality Inspection: Verify dimensions with calipers and bore gauges, check surface finish uniformity, and ensure dimensional accuracy to meet industry standards.
· Packaging and Shipping Methods
- Packaging: Each sleeve is individually wrapped in anti-rust film and placed in a sturdy box. Bulk orders are packed in moisture-proof containers with partition layers to prevent scratching and corrosion during transit.
- Shipping: Supports International Express (DHL, FedEx, UPS) for small orders, Air Freight for urgent deliveries, and Sea Freight for large-volume shipments. Tracking information is provided for all orders.
· Process

· Frequently Asked Questions (FAQ)
Q1: What is the Minimum Order Quantity (MOQ)?
A1: For standard sleeves, MOQ is 50 pieces per design. For fully custom designs, MOQ is 100 pieces (negotiable for prototype/trial orders).
Q2: What is the Lead Time?
A2: Standard orders ship within 10–15 working days. Custom orders requiring new tooling or special surface treatments take 18–22 working days.
Q3: Can I Customize This Sleeve?
A3: Yes. Full customization is available for material, dimensions, inner/outer geometry, surface finish, and branding (laser marking). Provide your technical drawings (CAD files, 2D/3D models) or specifications for a tailored solution.
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