Part Types

Choosing the right part type starts with its function, geometry, and role in the assembly. Use the guide below to identify the most suitable CNC machined component for your application.

Your Requirement	Recommended Part Type	Typical Purpose
Rotating or transmitting motion	CNC Machined Shafts	Drive, rotation, positioning
Alignment or precise positioning	CNC Machined Pins	Locating, fastening, alignment
Bearing, supporting, or reducing wear	CNC Machined Bushings	Bearing support, alignment
Covering or protecting cylindrical components	CNC Machined Sleeves	Protection, insulation, assembly
Maintaining a fixed gap between components	CNC Machined Spacers	Spacing, clearance, positioning
Connecting pipes or mechanical components	CNC Machined Fittings	Connection, adaptation
Mounting or supporting equipment	CNC Machined Brackets	Mounting, support, positioning
Flat mounting or structural component	CNC Machined Plates	Mounting, base, fixtures
Enclosing mechanical or electronic assemblies	CNC Machined Housings	Protection, support, enclosure
Mounting or connecting fluid-system components	CNC Machined Flanges	Connection, mounting, sealing
Distributing or controlling fluid flow	CNC Machined Manifolds	Hydraulic, pneumatic systems
Housing internal valve mechanisms	CNC Machined Valve Bodies	Fluid control

 

Procurement Tip

When requesting a quote, provide the part function, drawing or CAD file, material, quantity, critical dimensions, tolerances, surface finish, and inspection requirements. This allows the manufacturer to select the appropriate machining method and provide an accurate quotation.

Send Your Drawing

 

 

Different CNC machined parts require different machining processes based on their geometry, features, and production requirements. The table below shows common process combinations for major part types.

Part Type	Common CNC Processes
CNC Machined Shafts	CNC Turning · Milling · Drilling · Threading
CNC Machined Pins	CNC Turning · Drilling · Threading · Grooving
CNC Machined Bushings	CNC Turning · Boring · Drilling · Grooving
CNC Machined Sleeves	CNC Turning · Boring · Drilling · Grooving
CNC Machined Spacers	CNC Turning · Drilling · Threading
CNC Machined Fittings	CNC Turning · Milling · Drilling · Threading
CNC Machined Brackets	CNC Milling · Drilling · Tapping · 3-Axis / 4-Axis Machining
CNC Machined Plates	CNC Milling · Drilling · Tapping · Pocketing
CNC Machined Housings	CNC Milling · Drilling · Tapping · 4-Axis / 5-Axis Machining
CNC Machined Flanges	CNC Turning · Milling · Drilling · Tapping
CNC Machined Manifolds	CNC Milling · Drilling · Tapping · Boring
CNC Machined Valve Bodies	CNC Milling · Drilling · Tapping · Boring · 4-Axis / 5-Axis Machining

How Process Selection Works

The appropriate machining process depends on the part geometry, material, critical features, tolerances, surface finish, production volume, and required delivery time. A single component may require multiple operations to achieve its final geometry and specifications.

 

Need help selecting the right machining process?
Send us your 2D drawing, 3D CAD file, or sample, and our engineering team can review the part requirements and recommend a suitable manufacturing approach.

Send Your Drawing

 

Precision CNC machined parts require consistent dimensional control from production to final inspection. We inspect parts according to customer drawings, specifications, and quality requirements, with critical dimensions checked before shipment.

Dimensional Inspection

Inspection of critical dimensions, hole positions, diameters, lengths, threads, and other drawing requirements.

 

Measurement Equipment

Depending on the part and inspection requirements, measurements may include CMM, micrometers, calipers, height gauges, bore gauges, and thread gauges.

 

First Article & Production Inspection

For new or critical components, first-article and production inspections can be arranged to verify dimensions and key features before shipment.

 

Inspection Documentation

Dimensional inspection reports, material certificates, and other quality documents can be provided when required by the customer.

 

Quality Control Process

Drawing Review → In-Process Inspection → Final Inspection → Documentation → Packaging & Shipment

Request a Custom Quote

 

Machining Tolerances

Tolerance Type	Typical CNC Machining Capability	Procurement Notes
General Dimensional Tolerance	±0.05 mm	Suitable for standard CNC machined dimensions
Precision Dimensional Tolerance	±0.02 mm	For selected critical dimensions
High-Precision Machining	±0.01 mm	Subject to part geometry, material, size, and process
Hole Diameter Tolerance	±0.02 mm	For precision holes and mating features
Position Tolerance	±0.05 mm	Depends on datum structure and part geometry
Flatness	0.03–0.05 mm	Depends on part size, material, and thickness
Concentricity	0.02–0.05 mm	Commonly relevant to shafts and bushings

 

Surface Finishes

Surface Finish	Typical Purpose	Common Materials
As-Machined	Standard machined surface	Aluminum, Steel, Stainless Steel, Brass
Anodizing	Corrosion resistance, appearance, surface protection	Aluminum
Passivation	Improved corrosion resistance	Stainless Steel
Electroless Nickel Plating	Wear and corrosion resistance	Steel, Aluminum, Copper Alloys
Nickel Plating	Surface protection and appearance	Steel, Copper Alloys, Brass
Polishing	Improved surface appearance and smoothness	Stainless Steel, Aluminum, Brass
Brushing	Decorative and directional surface finish	Aluminum, Stainless Steel
Black Oxide	Corrosion protection and appearance	Steel
Powder Coating	Protective and decorative coating	Aluminum, Steel

 

To provide an accurate CNC machining quotation, please provide as much of the following information as available. Clear technical requirements help us evaluate manufacturability, machining processes, inspection requirements, and production costs.

Information	What to Provide
2D Drawing	Dimensions, tolerances, threads, surface finish, and technical requirements
3D CAD File	STEP, STP, IGES, or other commonly used CAD formats
Material	Material grade and required material standard
Quantity	Prototype, sample, batch quantity, or annual volume
Critical Tolerances	Identify dimensions that require tighter control
Surface Finish	Required machining finish or secondary surface treatment
Heat Treatment	Required hardness or heat treatment specification, if applicable
Inspection Requirements	Dimensional inspection, inspection report, material certificate, etc.
Delivery Requirement	Target delivery date or required lead time
Packaging	Individual protection, bulk packing, export packaging, or special requirements

The 2D drawing + 3D CAD file + material + quantity are the most useful starting points. If a 3D model is unavailable, a detailed 2D drawing or sample can also be used for quotation review.

Send your drawings and requirements to our engineering team for review and quotation.

 

 

Equipment	Main Capability
3-Axis CNC Machining Centers	Milling, drilling, tapping, pocketing and contour machining
4-Axis CNC Machining Centers	Multi-sided machining and complex features
5-Axis CNC Machining Centers	Complex 3D geometries and multi-surface machining
CNC Turning Centers	OD/ID turning, facing, boring, threading and grooving
Swiss CNC Machines	Small-diameter, long and precision components
CNC Turn-Mill Centers	Combined turning, milling, drilling and threading
CNC Grinding Machines	Precision grinding and tight-tolerance finishing
CMM	Dimensional and geometric inspection
Optical Measuring Equipment	Small features, profiles and dimensional inspection
Surface Roughness Tester	Surface finish measurement
Material Testing Equipment	Material identification and verification

 

Packaging

We use suitable packaging methods to protect CNC machined parts from scratches, impact, moisture, and contamination during storage and international transportation.

Packaging Method	Application
Individual Plastic Bags	Small precision parts and finished components
Protective Foam	Parts with machined or finished surfaces
Bubble Wrap	Additional impact protection
Cartons	Small and medium-sized orders
Wooden Cases	Heavy, large, or bulk shipments
Custom Packaging	Packaging based on part size, weight, and customer requirements

 

Lead Time

Lead time depends on part complexity, material availability, quantity, machining process, surface treatment, and inspection requirements.

Order Stage	Typical Lead Time
Drawing & Engineering Review	1–2 business days
Prototype / Sample Parts	7–15 business days
Small-Batch Production	10–20 business days
Production Orders	15–30 business days
Surface Treatment	Additional time depending on the finish

 

Need a specific delivery date? Send us your drawing, material, quantity, and required finish, and we can confirm the estimated lead time with your quotation.

 

1. What types of CNC machined parts can you manufacture?

We manufacture a wide range of custom CNC parts, including shafts, pins, bushings, sleeves, spacers, fittings, brackets, plates, housings, flanges, manifolds, and valve bodies.

 

2. Can you manufacture CNC parts from customer drawings?

Yes. We can manufacture parts based on customer 2D drawings, 3D CAD files, samples, or detailed specifications.

 

3. What file formats do you accept for CNC machining?

Common CAD formats such as STEP, STP, and IGES can be provided for engineering review. 2D drawings should include dimensions, tolerances, material, surface finish, and other critical requirements.

 

4. What materials can you use for CNC machined parts?

Common materials include aluminum, stainless steel, carbon steel, alloy steel, brass, copper, and titanium. Material grades can be specified according to your drawing or purchasing requirements.

 

5. What CNC machining tolerances can you achieve?

Typical tolerances depend on the part geometry, material, dimensions, machining process, and inspection requirements. Specific tolerances should be defined on the technical drawing and reviewed before production.

 

6. Can you manufacture both prototypes and production quantities?

Yes. CNC machined parts can be produced for prototypes, small batches, and repeat production according to project requirements.

 

7. Can you machine complex CNC parts?

Yes. Depending on the part geometry, suitable processes may include CNC turning, 3-axis milling, 4-axis machining, 5-axis machining, drilling, boring, tapping, and other secondary operations.

 

8. What surface finishes are available for CNC machined parts?

Available options may include as-machined, anodizing, passivation, polishing, plating, brushing, black oxide, and powder coating, depending on the material and application.

 

9. Can you provide inspection reports?

Dimensional inspection and inspection documentation can be provided according to customer requirements. Critical dimensions and features can be inspected against the approved drawing.

 

10. What information do you need for a CNC machining quotation?

The most useful information includes the 2D drawing, 3D CAD file, material grade, quantity, critical tolerances, surface finish, inspection requirements, and delivery requirements.

 

11. Can you handle repeat CNC machining orders?

Yes. Repeat production can be managed according to the approved drawing, specifications, quality requirements, and agreed production schedule.

 

12. How do I request a quote for a custom CNC machined part?

Send your 2D drawing, 3D CAD file, or sample information, together with the material and required quantity. Our team can review the requirements and provide a quotation based on the part specifications and production needs.

Send Your CNC Drawing

 

We're professional part types manufacturers and suppliers in China, specialized in providing high quality customized titanium products. We warmly welcome you to buy discount part types for sale here from our factory. For price consultation, contact us.