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IATF16949:2016
ISO13485:2016
ISO9001:2015
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20% off your first order. Save up to $1,000/€1,000. Ends 31 Dec 2024.
IATF16949:2016
ISO13485:2016
ISO9001:2015
Call Us 24/7
+86 135 1000 5651
Send Mail Us
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What is CNC Turning?
CNC turning is a computer-controlled digital precision machining technology. Its working principle involves rotating the workpiece and cutting it with tools to shape rotationally symmetrical components such as shafts, sleeves, and disk-type parts.
Core Features of CNC Turning:
Stable Precision: Standard machining tolerance ±0.03mm; Precision grade: up to ±0.001mm
Material Versatility: Compatible with stainless steel, aluminum alloys, brass, engineering plastics, etc.
Enhanced Efficiency: Single-piece processing speed is 3-5 times faster than conventional lathes, enabling rapid small-batch delivery
Complex Forming: Capable of machining threads, tapered surfaces, and special-shaped grooves
Consistency Assurance: Automated production eliminates human errors, with batch component dimensional variations <0.02mm
CNC Turning Materials
Our warehouse stocks a comprehensive range of plastic and metallic materials for diverse industries, including common grades such as POM, ABS, aluminum alloys, stainless steel, brass, low-carbon steel, alloy steel, and titanium alloys.
Aluminum Alloys
Stainless Steel
Brass
Low-Carbon Steel
Alloy Steel
Titanium Alloys
Surface Treatment Solutions for Turned Parts
We provide full-spectrum surface finishing services ranging from industrial-grade (Ra3.2) to precision mirror-grade (Ra0.4). Our precision CNC lathes equipped with vibration-damped tool holder systems ensure stable texture control on materials including aluminum alloys, stainless steel, and brass, supporting concentric, crosshatched, and non-directional surface patterns. All turned components undergo CMM-verified roughness parameter inspections to meet critical application requirements such as hydraulic sealing surfaces and optical device mounts.
| Aluminum | Cylindrical surfaces on aluminum turned parts typically achieve significantly smoother finishes compared to milling processes. |
| Other Metals | For enhanced matt finishes, we recommend fine sandblasting treatment on metal components. |
RT Manufacture CNC Turning Tolerances
We comply with ISO 2768 standards for CNC turning operations.
| Nominal Dimension Ranges | Plastics (ISO 2768-m) | Metals (ISO 2768-f) |
| 0.5mm* to 3mm | ±0.00394 (±0.1mm) | ±0.00197±0.05mm) |
| Over 3mm to 6mm | ±0.00394(±0.1mm) | ±0.00394 (±0.1mm) |
| Over 6mm to 30mm | ±0.00787(±0.2mm) | ±0.00591(±0.15mm) |
| Over 30mm to 120mm | ±0.0118(±0.3mm) | ±0.00787(±0.2mm) |
| Over 120mm to 400mm | ±0.0197 (±0.5mm) | ±0.0118 (±0.3mm) |
| Over 400mm to 1000mm | ±0.0315 (±0.8mm) | ±0.0197 (±0.5mm) |
| Over 1000mm to 2000mm | ±0.0472 (±1.2mm) | |
| Over 2000mm to 4000mm | ±0.0787(±2mm) | |
| * Tolerances for nominal dimensions below 0.5mm must be clearly specified on technical drawings. | ||
Our Highest CNC Turning Capabilities
| Part size limitations | Metric units | Imperial units |
| Maximum part diameter | 230 mm | 9.06in |
| Maximum part length | 1800 mm | 70.87in |
Put Your CNC Parts Into Production Today
Industrial Application Scenarios and Solutions for CNC Turning
With 15 years of precision CNC machining expertise, we deliver professional CNC turning services to 20+ global industries, spanning automotive, aerospace, medical devices, and energy equipment sectors. Our capabilities range from micron-level precision components to heavy-duty industrial parts up to 2 meters in size. Having successfully served 35+ specialized fields, we leverage multi-axis turn-mill machining capabilities – integrating CNC turning with CNC milling for complex geometries – and military-grade inspection systems to overcome 12 critical industry challenges, including thin-walled part deformation, vibration in deep-hole machining, and ultra-hard material processing, delivering customized CNC machining solutions.
Automotive Manufacturing
Aerospace
Medical Devices
Industrial Automation
Optical Equipment
Energy Equipment
Semiconductor Equipment
Micro Precision Components
Automotive Manufacturing
Typical Components:
Drive shafts, piston pins, hydraulic valve cores
Key Processes:
Precision turning of alloy steels with hardness ≥ HRC45
Deep-hole machining (length-to-diameter ratio 8:1)
Batch production consistency control (CPK ≥ 1.33)
Aerospace
Typical Components:
Engine bushings, landing gear pivots, avionics connectors
Key Processes:
Precision turning of titanium alloys/nickel-based superalloys
Thin-wall deformation control (0.5mm ±0.03mm wall thickness)
100% penetrant testing certification
Medical Devices
Typical Components:
Surgical instrument joints, implant bases, probe housings
Key Processes:
Mirror-finish turning of medical-grade 316L stainless steel (Ra ≤0.4μm)
Biocompatible surface treatment (electropolishing)
Class 10,000 cleanroom production
Industrial Automation
Typical Components:
Robotic harmonic reducer parts, linear guide sliders, sensor housings
Key Processes:
High-speed aluminum alloy turning (cutting speed ≥300m/min)
Integrated turn-mill machining for complex grooves
Assembly surface roundness ≤0.005mm
Optical Equipment
Typical Components:
Laser mirror mounts, spectrometer turntables, fiber connector bases
Technical Challenges:
Anti-oxidation treatment for aluminum alloy mirror surfaces (Ra0.2μm)
Ultra-high coaxiality requirements (runout ≤0.003mm on Ø50mm datum)
Pre-treatment for vacuum coating substrates
Energy Equipment
Typical Components:
Nuclear valve spindles, wind turbine bearing sleeves, geothermal pump shafts
Breakthroughs:
Continuous turning of large Inconel 718 workpieces (Ø800×2000mm)
Hardness gradient control for heavy-duty parts (surface HRC58 → core HRC32)
H2S-resistant surface nitriding
Semiconductor Equipment
Typical Components:
Vacuum chamber flanges, wafer clamp rings, etching nozzles
Critical Techniques:
Copper-free aluminum alloy turning (Class 100 cleanliness)
Multi-step thin-wall deformation <0.01mm
Ultra-high vacuum seal surfaces (helium leak rate ≤1×10⁻⁹ Pa·m³/s)
Micro Precision Components
Typical Components:
Medical: Insulin pump gearboxes (Φ1.2mm bore turning)
Electronics: MEMS sensor bases (±0.005mm geometric tolerance)
Horology: Escapement arbors (Ra0.1μm surface finish)
Core Technologies:
Swiss Tornos sliding headstock lathes (Φ0.3mm micro-turning)
Submicron-level in-process measurement compensation
Stress-free clamping (deformation <0.002mm)
Surface Treatment of Custom CNC Turned Parts
Sandblasting and Anodizing Specifications
| Sandblasting Type | Anodizing | Hard Anodizing |
| 80#-180# | Type II (color optional) | Type III (color varies according to the material itself) |
What Are the Advantages of Our Custom Turning Services?
Complimentary First-Article Full-Dimensional Inspection Report
Guaranteed 7-15 Working Days Delivery Cycle for Standard Orders
Tailored Process Service
Full Support for Drawing-Based Manufacturing & Sample Replication
Expert Engineering Team with an Average of 15+ Years of Industry Tenure
AS9100-Compliant Quality Management System with End-to-End Traceability
Turned Parts We Manufacture
CNC turning parts
Medical cnc turning
Precision cnc turning
CNC turned parts
Brass cnc turned parts
CNC precision turned parts
CNC turning machine parts
Aluminum cnc turning parts
CNC precision turning parts
Global Partners Validate
Authentic feedback from clients across 28 countries demonstrates our excellence in CNC turning precision, process innovation, and delivery speed. 95% of customers particularly commend our rapid response system—96-hour delivery for standard components and 10-15 day turnaround for complex parts—while maintaining strict ±0.01mm tolerance control.
James Whitmore
Mechanical Design Engineer
Their CNC turning process revolutionized our prototype development. The brass sensor housings with 0.8mm micro-grooves were delivered in 7 working days, outperforming local suppliers’ lead times by 60%.
Sophia Müller
Procurement Director
We’ve entrusted them with harmonic reducer core components for three consecutive years. 15 production batches consistently achieved CPK ≥1.67. Their quick-turn CNC machining service has repeatedly rescued our production line emergencies.
Rajesh Kapoor
Technical Director
They achieved Ra0.4μm mirror finishes on 316L stainless steel valve cores, with batch dimensional variations controlled within ±0.007mm. The most responsive Asian supplier we’ve partnered with.
Emily Chen
Project Manager
From drawing approval to receiving titanium alloy bone screw samples in just 15 days, with zero delays across three design iterations. Their CNC turning service is a game-changer for startups.
Luca Ferrari
Quality Supervisor
Deep-hole machining (L/D=12:1) on nickel-alloy turbine bushings fully complies with AS9100 standards. Their inspection reports surpass our European factories’ in detail and professionalism.
Amina Bah
Supply Chain Manager
Emergency repair parts arrived via air freight within 96 hours. The wear-resistant coating on tungsten steel crusher sleeves exceeded OEM precision. A perfect balance of quality and speed.
Our Other Manufacturing Solutions
Over 50 injection molding materials
No structural restrictions
No minimum order quantity
Extensive sheet metal manufacturing processes
Delivery as fast as 7 business days
Affordable
Low-volume production of various prototypes
Tolerances as low as ±0.1 mm (±.004 in.)
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