cnc turning parts: Copper C110, tolerance 0.005 mm, surface hard chrome plate 0.025 mm, lead time 20 working days, MOQ 200 pcs. Capacity for semiconductor equipment. Drawing review and first-article report included.
cnc turning parts
Key Takeaway
CNC turning parts are machined to ±0.005 mm tolerance with surface finishes such as hard chrome plate 0.025 mm and Ra 0.4, across a size range of Ø2 mm to Ø500 mm. Production lead time is 15 working days, whether you need 50 pieces for validation or 50,000 for a production line. Material options include Aluminium 7075-T6, and cost is driven by secondary operations like deburring, plating, and inspection.
Key Takeaway
CNC turning parts are machined to ±0.005 mm tolerance, with surface finishes such as hard chrome plate 0.025 mm and Ra 0.4, across a size range of Ø2 mm to Ø500 mm. Production lead time is 15 working days, whether you need 50 pieces for validation or 50,000 for a production line. Material options include Aluminium 7075-T6, and cost is driven by secondary operations like deburring, plating, and inspection.
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Whether you need 50 pieces for validation or 50,000 for a production line, cnc turning parts follows the same physics. What changes is which process window we hold, and how much inspection we put behind it.
Key Specifications at a Glance
| Parameter | Value / Range |
|---|---|
| Material | Aluminium 7075-T6 |
| tolerance_standard | ±0.005 mm |
| Surface finish | hard chrome plate 0.025 mm |
| roughness_ra | Ra 0.4 |
| Size range | Ø2 mm to Ø500 mm |
| Lead time (production) | 15 working days |
Market and Technical Context
Cost pressure in automotive rarely comes from the raw material. It comes from secondary operations: deburring, plating, and 100% inspection. Removing one of those steps usually moves unit cost more than any material substitution.
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The technical bar keeps rising: assemblies that once accepted ±0.005 mm now specify tighter control on critical features, which pushes the decision to tooling design rather than to final inspection.
How We Manufacture It
Tooling is designed around the measured capability of the process, so ±0.005 mm is a consequence of tooling geometry rather than an inspection filter. That is why 15 working days is realistic instead of optimistic.
Deburring and edge conditioning are specified on the drawing for cnc turning parts. A sharp edge that passes dimensional inspection can still fail assembly, so edge break is a controlled parameter rather than a cosmetic one.
Final inspection for cnc turning parts is sampling-based for general dimensions and 100% for critical features. The split is agreed before tooling, because moving a feature from general to critical changes cost and 15 working days.
Material and Surface Finish
Aluminium 7075-T6 is the default for cnc turning parts because it holds ±0.005 mm predictably and machines without work hardening surprises. Alternatives are quoted when corrosion or conductivity dominates the requirement.
Where cnc turning parts sees contact loading, material hardness is specified alongside dimensional tolerance. Hardness without a defined test method is the most common source of incoming-inspection disputes.
Recycled content and RoHS/REACH declarations are available for cnc turning parts on request. If your automotive customer audits material origin, ask for the mill certificate at quote stage, not at delivery.
Tolerance and Inspection
Process capability is tracked per feature. Where Cpk falls below the agreed threshold on cnc turning parts, we either adjust the process or reclassify the feature, rather than sorting parts at the end.
Traceability is kept by heat lot and production date. If a field issue ever appears with cnc turning parts, we can identify which batch, which tooling set, and which inspection record applies.
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Non-conforming material is quarantined physically, not just in the system. For cnc turning parts, that means the batch stays in a marked area until disposition is documented, which prevents the most common shipping error.
Where It Is Used
In assembly, cnc turning parts is usually constrained by the mating part rather than by its own specification. Sharing the interface drawing early prevents the common failure where both parts are in tolerance but will not assemble.
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Vibration and cycling are the usual life limiters for cnc turning parts. If the duty cycle is known, we can recommend a surface treatment and hardness combination that extends service life without changing dimensions.
What to Confirm Before Ordering
Ask for the first-article report before you ask for a price cut on cnc turning parts. A supplier who cannot produce dimensional data at 200 pcs will not produce it at .
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Packaging is part of the specification. Parts arriving with edge damage or mixed lots cost more than the packaging difference, especially for cnc turning parts with finished surfaces.
FAQ: Your Questions Before Ordering
How long does production take for cnc turning parts?
General dimensions are held to ±0.005 mm. Critical features are identified on the drawing and held to a tighter band, with the measurement method stated so incoming inspection matches ours.
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Can you work from our existing drawing?
Prototype quantities start well below production minimums. Production runs for cnc turning parts start at 200 pcs, which is where the process window is proven and unit cost stabilises.
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Do you provide material and inspection certificates?
Yes. Send the drawing in any common format. We review it for manufacturability first and flag any feature where ±0.005 mm would require an extra operation, so you can decide before tooling.
What surface finishes are available for cnc turning parts?
Yes, and we recommend it. Prototyping cnc turning parts without tooling validates fit and function at a fraction of tooling cost, and usually surfaces a design change before steel is cut.
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How do you handle a design change mid-program?
Changes are documented against the original first-article report. We identify which dimensions are affected, requote only the affected operations, and tell you whether existing stock of cnc turning parts remains usable.
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Send the drawing and the annual volume. You will get a manufacturability review, a process route, and a quote that states ±0.005 mm, 15 working days, and 200 pcs explicitly rather than by implication.
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Key Specifications and Selection Guide
Spec comparison
| Parameter | Value / Range |
|---|---|
| Material | Aluminium 7075-T6 |
| Tolerance | ±0.005 mm |
| Lead time | 15 working days |
| MOQ | 50 pieces |
| Capacity | 50 to 50,000 pieces |
Selection / comparison
| Option | Best for | Trade-off |
|---|---|---|
| Aluminium 7075-T6 | High-strength turned parts | Higher material cost than general aluminium |
| Hard chrome plate 0.025 mm | Wear resistance and surface durability | Adds plating operation and cost |
| Ra 0.4 surface finish | Smooth sealing or sliding surfaces | Requires tighter process control |
| ±0.005 mm tolerance | Critical fit and function features | Pushes cost into tooling design |
| 15 working days lead time | Validation and production schedules | Depends on process window and inspection |
Process / inspection
| Stage | Control | Record |
|---|---|---|
| Tooling design | Built around measured process capability | Tooling geometry and capability data |
| Turning | Hold ±0.005 mm on critical features | In-process checks |
| Deburring | Edge conditioning specified on drawing | Visual and edge inspection |
| Plating | Hard chrome plate 0.025 mm | Plating thickness record |
| Final inspection | 100% inspection when required | Inspection report |
Frequently Asked Questions
What tolerance can you hold on CNC turning parts?
We hold ±0.005 mm on critical features. This is achieved through tooling designed around measured process capability, not by final inspection alone. For assemblies that need tighter control, we review tooling geometry first. Size range is Ø2 mm to Ø500 mm, and we can discuss your specific tolerance requirements before quoting.
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What is the lead time for 50 to 50,000 CNC turning parts?
Production lead time is 15 working days. Whether you need 50 pieces for validation or 50,000 for a production line, the same physics apply. What changes is the process window we hold and the amount of inspection behind it. We confirm schedule after reviewing your drawing and quantities.
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Which materials are available for CNC turning parts?
Aluminium 7075-T6 is a standard material for CNC turning parts. It offers high strength for demanding applications. Other materials can be discussed based on your drawing and function. Material choice affects secondary operations such as deburring, plating, and inspection, which often drive unit cost more than raw material substitution.
What surface finishes can you apply to turned parts?
We can apply hard chrome plate 0.025 mm and achieve Ra 0.4 surface roughness. These finishes support wear resistance and smooth sealing or sliding surfaces. Surface finish requirements should be specified on the drawing. Plating and polishing are secondary operations that affect cost and lead time.
How do you inspect CNC turning parts for quality?
Inspection is planned around the tolerance and application. We can perform 100% inspection when required, with records for critical features. Deburring and edge conditioning are specified on the drawing. Tooling is designed around measured process capability, so ±0.005 mm is a consequence of tooling geometry rather than an inspection filter.
What is the minimum order quantity for CNC turning parts?
We support orders from 50 pieces for validation up to 50,000 for a production line. The minimum order quantity is 50 pieces. Even at low volumes, the same process physics apply. What changes is the process window we hold and how much inspection we put behind it. Contact us with your drawing for a quote.
What should I confirm before ordering CNC turning parts?
Confirm material, tolerance, surface finish, and quantity. Our standard range includes Aluminium 7075-T6, ±0.005 mm tolerance, hard chrome plate 0.025 mm, Ra 0.4, and sizes from Ø2 mm to Ø500 mm. Lead time is 15 working days. Also specify deburring, edge conditioning, and inspection requirements on the drawing to avoid cost surprises.
Key Specifications and Selection Guide
Spec comparison
| Parameter | Value / Range |
|---|---|
| Material | Aluminium 7075-T6 |
| Tolerance | ±0.005 mm |
| Lead time | 15 working days |
| MOQ | 50 pieces (validation) to 50,000 pieces (production) |
| Capacity | 50 to 50,000 pieces |
Selection / comparison
| Option | Best for | Trade-off |
|---|---|---|
| Aluminium 7075-T6 | High-strength, lightweight turned parts | Higher material cost than common aluminium grades |
| Hard chrome plate 0.025 mm | Wear resistance and corrosion protection | Adds plating operation and cost |
| Ra 0.4 surface finish | Smooth sealing surfaces and low friction | Requires finer machining and inspection |
| ±0.005 mm tolerance | Precision assemblies with tight fits | Increases inspection and process control cost |
| 50-piece validation run | Design verification before mass production | Higher unit cost than 50,000-piece production |
Frequently Asked Questions
What tolerance can you hold on CNC turning parts?
We machine CNC turning parts to ±0.005 mm tolerance. This applies across our size range of Ø2 mm to Ø500 mm. For critical features, we maintain this tolerance through in-process inspection and final 100% inspection when required.
What surface finishes are available for CNC turning parts?
We offer hard chrome plate 0.025 mm and Ra 0.4 surface roughness. Hard chrome plating improves wear resistance and corrosion protection. Ra 0.4 provides a smooth finish suitable for sealing surfaces and low-friction applications.
What is the lead time for CNC turning parts?
Production lead time is 15 working days. This applies whether you order 50 pieces for validation or 50,000 pieces for a production line. The same physics govern both runs; we adjust the process window and inspection level accordingly.
What is the minimum order quantity for CNC turning parts?
We support orders from 50 pieces for validation up to 50,000 pieces for production. There is no strict minimum beyond 50 pieces, but unit cost decreases at higher volumes because setup and secondary operations are spread over more parts.
What material do you recommend for CNC turning parts?
Aluminium 7075-T6 is a common choice for high-strength, lightweight turned parts. It offers good machinability and can be hard chrome plated to 0.025 mm. Material selection depends on your strength, weight, and corrosion requirements.
What drives the cost of CNC turning parts?
Cost pressure rarely comes from raw material. It comes from secondary operations: deburring, plating, and 100% inspection. Removing one of those steps usually moves unit cost more than any material substitution. Volume also affects cost, from 50 to 50,000 pieces.
What should I confirm before ordering CNC turning parts?
Confirm your required tolerance (±0.005 mm), surface finish (hard chrome plate 0.025 mm, Ra 0.4), size range (Ø2 mm to Ø500 mm), material (Aluminium 7075-T6), order quantity (50 to 50,000 pieces), and lead time (15 working days). Also specify inspection and documentation needs.
