Precision CNC Turning Services
High-Precision Custom Turned Parts — ±0.002mm Tolerance, 24h Quote
GUNRI delivers precision CNC turned components for mission-critical applications. From prototyping to series production, we machine 30+ materials on Swiss-type and multi-axis lathes with tolerances down to ±0.002mm. Upload your CAD files for a technical quote within 24 hours.
Free technical review • NDA available • No minimum order quantity
How CNC Turning at GUNRI Works
From your CAD file to a finished precision part in 4 simple steps
01
Send Your CAD File
Share your STEP, IGS, or PDF drawings with our engineering team. We review your design for manufacturability.
02
Receive 24h Technical Quote
Our engineers evaluate tolerances, material requirements, and production methods. You receive a detailed quote within 24 hours.
03
Precision Manufacturing
Your parts are machined on Swiss-type or multi-axis lathes under strict ISO 9001:2015 quality controls with CMM verification.
04
Delivery & Support
Finished parts are inspected, packaged, and shipped with full traceability. Material certificates and inspection reports included.
Why Choose GUNRI for Precision CNC Turning?
30 years of precision mold component expertise backed by ISO 9001:2015 quality standards
±0.002mm
Ultra-Precision Tolerances
Consistent tolerances down to ±0.002mm (±0.00008″), verified by CMM and optical measurement equipment for reliable interchangeability.
ISO 9001:2015
Quality Management System
Certified quality management system with strict metrology, in-process inspections, and full material traceability for every batch.
30+
Material Selection
Machine stainless steel, aluminum, brass, copper, titanium, and engineering plastics including PEEK, PTFE, and POM with strict chip control.
Swiss-Type
Advanced Machining
Swiss-type and multi-axis CNC lathes enable one-stop processing of complex parts, reducing setup errors and lead times for high-volume runs.
24h Quote
Fast Engineering Response
Upload your CAD files and receive a detailed technical quote within 24 hours. Our engineers review tolerances, materials, and manufacturability.
NDA
IP Protection
We sign NDAs to protect your intellectual property at no charge. Your designs remain confidential throughout the quoting and production process.
Our CNC Turning Capabilities
Leveraging 30 years of precision mold component expertise, GUNRI provides end-to-end CNC turning services for industries including automotive, medical, and industrial automation.
- CNC Turning Shafts — Precision shafts for automotive, medical, and industrial applications.
- CNC Threading Services — Internal and external threading with consistent pitch accuracy.
- CNC Sleeves Services — Custom sleeves and bushings with tight concentricity tolerances.
- CNC Small Diameter Micro Parts — Micro components from 0.5mm diameter using Swiss-type machining.
Materials & Finishing
We maintain strict chip control and surface finish integrity across a wide range of materials.
Stainless Steel
- 303, 304, 316, 420, 17-4 PH
Non-Ferrous Metals
- Brass, Copper, Bronze
Lightweight Alloys
- Grade 5 Titanium, 6061/7075 Aluminum
Engineering Plastics
- PEEK, PTFE, POM (Delrin)
Surface Finishing
- Anodising (Aluminum)
- Plating (Zinc, Nickel, Chrome)
- Bead Blasting
- Polishing (Ra ≤0.2µm)
- Passivation (Stainless Steel)
Post-Treatments
- Heat treatment available
- Material certificates included
- Dimensional inspection reports
Uncompromising Quality Control
Quality is the cornerstone of our manufacturing philosophy. Our facility operates under a strict ISO 9001:2015 certified quality management system with full traceability from raw material to finished part.
- CMM Inspection: Coordinate Measuring Machine verifies every critical dimension.
- Optical Measurement: Non-contact measurement for complex geometries and surface finish.
- Sub-Micron Metrology: Digital micrometers with sub-micron resolution for tight tolerances.
- Material Traceability: Certificates for all raw materials, from steel to engineering plastics.
Industry Applications
| Industry | Typical Components |
|---|---|
| Medical & Healthcare | Surgical instruments, implantable devices, diagnostic housings |
| Automotive Engineering | Fuel system components, sensor housings, customized pins |
| Industrial Mold & Die | High-precision core pins, ejector sleeves, guide bushings |
Frequently Asked Questions About CNC Turning Services
What is precision CNC turning?
Precision CNC turning is a computer-controlled machining process where lathes rotate a workpiece while cutting tools shape it to exact specifications. It produces cylindrical components such as shafts, pins, bushings, and sleeves with tolerances as tight as ±0.002mm.
What tolerances can you achieve for CNC turned parts?
We consistently hold tolerances down to ±0.002mm (±0.00008″), verified by CMM and optical measurement equipment in our ISO 9001:2015 certified facility. This ensures reliable interchangeability in mission-critical applications.
What materials do you support for custom CNC turning?
We machine over 30 materials, including stainless steel (303, 304, 316, 420, 17-4 PH), aluminum (6061, 7075), brass, copper, bronze, titanium (Grade 5), and engineering plastics such as PEEK, PTFE, and POM.
How do I get a quote for custom turned parts?
Upload your STEP, IGS, or PDF drawings to milla@gunri.com.cn. Our engineering team reviews your design and delivers a technical quote within 24 hours. NDAs are available to protect your intellectual property at no charge.
What file formats do you accept for CNC turning?
We accept STEP (.stp), IGES (.igs), and PDF drawings. For best results, include tolerances, surface finish requirements, and material specifications in your design files.
Ready to Start Your Project?
Send us your CAD files for a free technical review and quote within 24 hours. We treat every tolerance with absolute respect.
Submit STEP, IGS, or PDF • Technical quote within 24 hours • NDA upon request