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Precision CNC Milling Service for Aluminum Orbiting & Fixed Scrolls

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Precision CNC machined aluminum fixed scroll for compressors, featuring complex involute spiral walls and mounting lugs.

A client approached us with a challenging orbiting scroll machining project: to produce a custom aluminum scroll for high-efficiency compression. The project demanded exceptionally rigorous Geometric Dimensioning and Tolerancing (GD&T) standards to ensure airtight performance.

Key Technical Requirements:

Flatness: 0.006mm
Perpendicularity: 0.006mm
Straightness: 0.006mm
Parallelism: 0.01mm
Profile Tolerance: 0.015mm

Upon completion of the machining process, we subjected the finished scrolls to a comprehensive inspection using our Coordinate Measuring Machine (CMM). The measurement data confirmed that every critical dimension fell strictly within the specified tolerances, perfectly matching the customer’s rigorous design requirements.

Project Details

Part type: Custom High-Precision Compressor Scroll (Orbiting Type)

Material: Aluminum Alloy

Key Tolerances (GD&T): Flatness: 0.006mm / Perpendicularity: 0.006mm

Profile Tolerance: 0.015mm (Involute Curve Profile)

Quantity: 12 pcs

Lead Time: 19 day

Free Quote & Design Review

We provide custom CNC machining services for low-volume production and Rapid Prototyping for design verification.  Click Here to Upload Your CAD Files

Our Manufacturing Capabilities

5-axis CNC milling machine cutting an aluminum block during the manufacturing process.

Capabilities include 3-Axis, 4-Axis, and 5-Axis CNC Milling, as well as CNC Turning operations. Standard materials processed include Aluminum alloys, Stainless Steel, Titanium, etc. and Engineering Plastics. Available secondary operations include Anodizing, Powder Coating, Bead Blasting, and Laser Engraving.

Capacity supports requirements ranging from single-unit Rapid Prototyping to Low-Volume Production runs (1-1,000+ units).

Factory Quality Assurance

Coordinate Measuring Machine (CMM) inspecting the dimensional accuracy of a custom CNC machined part.

A standardized Quality Management System (QMS) is applied to all manufacturing orders, regardless of part complexity or production volume. The following inspection stages are mandatory for every CNC machining project:

  • Material Verification: Raw material certification (chemical composition and mechanical properties) is verified upon receipt to ensure compliance with material specifications.

  • First Article Inspection (FAI): The first unit from any production run undergoes a full dimensional report to validate the machining setup and programming before volume processing begins.

  • In-Process Monitoring: Periodic checks are conducted during the machining cycle to monitor tool wear and ensure dimensional consistency is maintained throughout the batch.

  • Final Inspection: Completed components undergo a final dimensional and cosmetic verification using CMM (Coordinate Measuring Machine) and calibrated manual instruments prior to packaging.

Order Fulfillment Process

Finished CNC machined components securely packaged in custom foam inserts for global shipping.

From CAD to part.

Step 1: Upload & Quote

Upload your CAD files (STEP/IGES) to our secure platform. Receive a detailed online CNC quote and lead time estimate within 24 hours.

Step 2: Free DFM Review

Our engineers conduct a Design for Manufacturability (DFM) analysis to optimize your design for rapid machining and reduce costs.

Step 3: Precision Machining

We ensure your custom CNC parts meet strict tolerance requirements.

Step 4: Quality Control

Every part undergoes rigorous inspection before leaving our factory to ensure it matches your specifications perfectly.

Step 5: Fast Delivery

We partner with DHL/FedEx for global express shipping. Get your CNC prototypes delivered to your door in as fast as 3 days.

FAQs About CNC Machining Services

No. We support projects of all sizes, from a single prototype unit to low-volume production runs.

Standard lead times are typically 10–15 business days. Expedited services (Rapid Prototyping) can be completed in as little as 3–5 business days, depending on part complexity and material availability.

In most cases, we source materials from our approved suppliers to ensure quality control. However, we can machine customer-supplied materials for specialized alloys or specific requirements upon engineering review.

Unless otherwise specified, our general tolerance standard is ISO 2768-m (±0.125 mm) for metals and ±0.25 mm for plastics. Precision tolerances ±0.005 mm are achievable but must be explicitly stated in 2D technical drawings.

Our facility can accommodate parts up to 4000 x 1500 x 600 mm for milling and Ø200 mm x 500 mm for turning.

Yes. We can install inserts (e.g., Helicoils, PEM fasteners) and perform basic mechanical assembly of machined components prior to shipment.

To provide an accurate quote, we require a 3D CAD file (STEP, IGES, or X_T format). If the part has threaded holes, tight tolerances, or specific surface finish requirements, a 2D PDF drawing must also be provided.

We take IP protection seriously. All files are stored securely, and we are willing to sign a Non-Disclosure Agreement (NDA) prior to receiving your data.

Yes. We can provide material certificates (COA) and dimensional inspection reports upon request. Please specify this requirement when placing your order.

We ship globally using major carriers (DHL, FedEx, UPS). Shipping terms are typically Ex Works (EXW) or DAP, depending on the agreement.

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On-Demand CNC Machining

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