Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of cnc turning in China. Please feel free to buy durable cnc turning made in China here from our factory. All customized products are with high quality and competitive price.
Turning Capabilities
|
Material Types |
Component Types |
Key Features |
|
Stainless steel (304) |
Shafts, sleeves, corrosion-resistant fittings |
Turning, facing, grooving, threading, boring |
|
Carbon steel (20#, 45#) |
Shafts, pins, structural components |
OD reduction, step turning, internal boring |
|
Alloy steel (40Cr) |
High-strength shafts, transmission components |
Threading (metric/UNC), grooving (O-ring recesses) |
|
Aluminum alloy (6061, 6082) |
Lightweight shafts, housings, connectors |
High-speed turning, fine surface finish |
|
Brass (H62) |
Terminals, fittings, conductive components |
Precision threading, grooving, parting |
|
Diameter Range: Φ2–Φ500mm |
Length Range: 3–1000mm |
Tolerances: ±0.02mm |
Process Specifications
|
Parameter |
Value |
|
Equipment |
CNC lathes and turning centers |
|
Diameter Range |
Φ2mm – Φ500mm |
|
Length Range |
3mm – 1000mm |
|
Dimensional Accuracy |
±0.02mm (steadily controlled) |
|
Geometric Tolerance |
Up to 0.02mm |
|
Secondary Operations |
Milling, drilling, tapping, heat treatment, surface treatment |
|
Certifications |
IATF 16949, ISO 14001, ISO 45001, IECQ QC080000 |
Performance Highlights
High precision and repeatability
CNC control delivers ±0.02mm dimensional accuracy with geometric tolerances up to 0.02mm - consistent from first part to the thousandth.
Broad material compatibility
We turn stainless steel (304), carbon steel (20#, 45#), alloy steel (40Cr), aluminum alloy (6061, 6082), and brass (H62). Each material is processed with optimized cutting parameters for required surface finish and accuracy.
Comprehensive turning operations
External turning (OD reduction), facing, grooving (O-ring/snap-ring recesses), threading (internal/external, metric/UNC), parting, and internal operations including drilling, boring, and reaming.
Large diameter and length capability
Diameter range Φ2–Φ500mm and length up to 1000mm - from small precision pins to large structural shafts.
Production turning for volume requirements
Consistent quality with reduced cycle times. Stable setups, controlled cutting parameters, and in-process monitoring ensure reliable outcomes across production batches.
IATF 16949-certified facility
Full PPAP Level 3 documentation available - process FMEA, control plans, capability studies - prepared to the same standard we apply to Tier 1 automotive customers.
Quality Control
Applications
Shafts and Pins
Precision shafts, stepped pins, and axles are turned from carbon steel, alloy steel, and aluminum to tight tolerances for automotive and industrial assemblies.
Bushings and Sleeves
Internal and external turning operations produce bushings and sleeves with precise bore diameters, consistent wall thickness, and controlled concentricity - critical for bearing assemblies and hydraulic systems.
Threaded Components
Internal and external threads - metric, UNC, and custom pitches - are machined directly on the lathe. Threaded fittings, fasteners, and connectors are produced with consistent lead and profile accuracy.
Aluminum and Brass Components
Lightweight aluminum (6061, 6082) and brass (H62) components - housings, connectors, terminals - are turned with optimized parameters for fine surface finish and dimensional accuracy.
Beyond Automotive
|
Sector |
Typical Components |
Key Requirements |
|
Industrial Equipment |
Shafts, bushings, hydraulic fittings |
Strength, wear resistance, pressure integrity |
|
Aerospace |
Precision pins, bushings, structural components |
Tight tolerances, traceability, material certs |
|
Medical |
Surgical instruments, implantable device components |
Precision, surface finish, biocompatible materials |
|
Electronics |
Connector pins, terminal components |
Tight tolerances, surface quality, conductivity |
Why CNC Turning
For cylindrical components, other manufacturing methods have limitations:
Milling – slower and less efficient for round parts
Cold heading – limited to simpler geometries, unable to produce threads or tight-tolerance bores
Cold extrusion – cannot produce threads, fine internal features, or tight-tolerance diameters
CNC turning delivers the productive middle ground - faster than milling for cylindrical parts, more geometrically flexible than cold heading, and capable of producing threads, grooves, bores, and tapered profiles with ±0.02mm precision.
Contact Us for Your New Project
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