CNC Drilling Parts

Custom CNC Drilling Parts & Precision Machining Services

Product Overview

Custom mechanical components manufactured through multi-axis Computer Numerical Control (CNC) drilling, reaming, boring, and tapping operations. Built for structural assembly, fluid routing, and fastening applications across ferrous and non-ferrous metals.

Manufacturing Capabilities: 3-axis, 4-axis, and 5-axis vertical/horizontal machining centers, deep-hole gun drilling, and CNC lathes with live tooling.

Core Function: Delivering precise hole diameters, tight positional tolerances, and clean, deburred internal features ready for direct assembly.

CNC Multi-Hole Machined Parts
Custom CNC multi-hole machined parts are precision-engineered components requiring multi-axis drilling, reaming, tapping, and counterboring across single or multiple planes. Built for assemblies
CNC Drilled Sleeves
CNC drilled sleeves are custom cylindrical mechanical components engineered with precise internal bores, outer diameters, and multi-axis drilled or tapped hole patterns. Built directly to OEM
CNC Drilled Shafts
Custom CNC drilled shafts are precision-machined rotating components engineered with integrated axial holes, cross-drilled ports, oil passages, and complex internal or external features. Designed for
CNC Drilled Brackets
Custom CNC drilled brackets serve as structural mounting, joining, and load-bearing components across mechanical assemblies. Machined from solid plate, extrusion, or block stock, these brackets
CNC Drilled Plates
Precision-machined flat components featuring exact hole patterns, tight positional tolerances, and custom contours for industrial machinery, automation, and tooling assemblies. Built strictly to
CNC Drilled Flanges
CNC drilled flanges are precision-machined connecting components deployed in fluid transfer systems, pressure vessels, and heavy mechanical structures. Manufactured from raw forgings or thick plate

Technical Specifications

Parameter	Specification Range
Material	Aluminum, Stainless Steel, Carbon Steel, Brass, Titanium, Engineering Plastics (POM, PEEK)
Size Envelope	Max dimensions: 800 x 600 x 500 mm (larger custom sizes reviewed per drawing)
Tolerance Range	Standard: ±0.02 mm; Precision grade: ±0.005 mm
Positional Accuracy	Hole center-to-center accuracy: ±0.01 mm to ±0.02 mm
Surface Roughness	Ra 0.4 um to 3.2 um as machined
Processing Limits	Hole diameter: 0.5 mm to 50 mm; Max depth-to-diameter ratio: 10:1
Primary Equipment	CNC Machining Centers, Gun Drilling Rigs, Live-Tool Lathes, Robotic Deburring Systems

Key Features

Positional Accuracy:

Multi-axis simultaneous positioning maintains exact center-to-center distances and hole array alignment.

Tight Tolerances:

Strict dimensional control over hole diameters and depths to prevent assembly interference.

Surface Quality:

Minimized tool marks and clean breakout edges achieved via optimized feeds, speeds, and secondary deburring.

Batch Repeatability:

Automated tool path compensation ensures consistent dimensions from initial prototypes to full production runs.

Flexible Volume Capacity:

Optimized setup processes handle low-volume trial runs and high-capacity manufacturing schedules.

Applications

Automotive:

Transmission housings, engine brackets, suspension plates, and fluid connector blocks.

Medical:

Surgical instrument frames, diagnostic equipment chassis, and imaging machine structural plates.

Aerospace:

Lightweight bracket assemblies, interior structural fasteners, and actuator housing components.

Automation:

Robotic arm mounts, linear guide support rails, pneumatic manifold blocks, and fixture plates.

Electronics:

Heat sinks, enclosure panels, connector housings, and equipment chassis frames.

Industrial Equipment:

Hydraulic valve bodies, heavy-duty gearboxes, and large machinery mounting plates.

Materials & Surface Finishes

Metals:
Aluminum (6061-T6, 7075-T6, 5052)

Stainless Steel (304, 316, 410, 17-4PH)

Carbon & Alloy Steel (1045, 4140, 12L14)

Brass & Copper (C36000, C11000)

Titanium (Grade 5 / Ti-6Al-4V)

Plastics: POM (Delrin), PTFE, PEEK, Nylon, Acrylic

Surface Finishes:
Anodizing (Clear / Hard Anodized per MIL-A-8625)

Passivation & Electropolishing (for Stainless Steel)

Zinc Plating, Nickel Plating, Black Oxide

Powder Coating & Bead Blasting

Customization & OEM

CAD File Compatibility:

Accepts STEP, IGES, DXF, PDF, and SolidWorks formats. Complete DFM (Design for Manufacturing) review provided prior to programming.

Custom Dimensions:

Machined strictly to customer print specifications, including non-standard dimensions and complex internal geometries.

Tolerance Demands:

Custom tolerances accommodated down to ±0.005 mm based on material constraints and feature geometry.

Material Traceability:

Certified raw materials sourced directly from mills, accompanied by Mill Test Reports (MTR) upon request.

Production Scaling:

Rapid prototyping for validation followed by scalable manufacturing capacity for blanket orders.

Quality Control & Certifications

01/

Facility Standard: ISO 9001 certified manufacturing environment operating under strict QMS protocols.

02/

CMM Inspection: Coordinate Measuring Machines utilized for verifying 3D coordinate points, hole patterns, and GD&T compliance.

03/

Shop-Floor Gauging: Calibrated digital calipers, micrometers, pin gauges, and thread plug gauges for active dimensional tracking.

04/

Surface Profiling: Contact profilometers used to verify Ra values against engineering print requirements.

05/

Material Verification: Incoming raw material checks, including Positive Material Identification (PMI) and dimensional cross-verification.

06/

Final Audit: 100% dimensional check or AQL-based sampling inspection paired with comprehensive inspection reports prior to shipment.

Packaging & Export Delivery

Protective Packaging:

Individual vacuum-sealed poly bags, anti-corrosion VCI paper, and custom EPE foam cushioning.

Traceability Labeling:

Laser-etched part numbers, lot codes, and barcoded labeling on packaging for supply chain tracking.

Export Standards:

Sturdy export-grade corrugated cartons or fumigation-free wooden crates compliant with international shipping regulations.

Lead Times:

Prototypes: 5 to 7 business days; Production runs: 15 to 25 business days depending on volume and finishing requirements.

FAQ

Q: What is your Minimum Order Quantity (MOQ)?

A: No strict MOQ. Prototypes and low-volume orders are accepted, though unit costs scale with batch size.

Q: What standard tolerances can you hold?

A: Standard machining tolerance is ±0.02 mm. Closer tolerances down to ±0.005 mm are available upon review.

Q: Can you provide Material Test Reports?

A: Yes. Mill Test Reports (MTR) and RoHS/REACH compliance documentation are available upon request.

Q: Do you provide physical samples before production?

A: Yes. First Article Inspection (FAI) samples with full dimensional reports can be provided for sign-off.

Q: What file formats are required for an accurate quote?

A: 3D CAD files (STEP, IGES) paired with a 2D PDF drawing containing critical tolerances, thread callouts, and finishes.

Q: How do you handle ongoing production volumes?

A: We support scheduled release orders (blanket orders) and safety stock agreements to match assembly line demand.

Request a Quotation

To initiate a prompt engineering and cost evaluation, please submit your technical package including:

Part Drawing / 3D CAD File (STEP, IGES, or 2D PDF with clear dimensions)
Material Specification (Alloy grade and standard designation)
Required Quantity (Initial batch size and annual usage forecast)
Tolerance & Finish Requirements (Callouts for critical fits and surface treatments)

As one of the most professional cnc drilling parts manufacturers and suppliers in China, we're featured by quality products and good price. If you're going to wholesale custom made cnc drilling parts, welcome to get quotes from our factory. Also, OEM&ODM service is available.