CGK-403 CNC High-Precision Screw Whirlwind Milling Machine
Compact Precision Milling for Small Screws and Worms
The CGK-403 brings internal whirlwind milling to small rolling-function components without requiring a long-bed machine.
The CGK-403 is a compact CNC high-precision screw whirlwind milling machine designed for the rolling-function-components industry. It machines small ball-screw raceways, trapezoidal screws, worms and other thread tooth profiles using an internal whirlwind milling head. The cutter plane intersects the workpiece axis at the thread helix angle while the workpiece rotates and the Z-axis feeds, generating the screw helix in a single continuous pass. Full CNC control with ±20° helix-angle capability and programmable 1–24 thread starts makes the CGK-403 well suited to high-mix, small-batch production of precision threaded parts up to 500 mm between centers and within a 1:40 length-to-diameter ratio.
Request a Quote →Key Features & Working Principle
Internal whirlwind kinematics let the CGK-403 mill accurate threads on small parts in a compact footprint.
Internal Whirlwind Milling
A rotating milling head cuts the thread profile while the workpiece rotates slowly, producing a smooth helix in one setup.
Compact 500 mm Footprint
500 mm between centers and Φ100 mm max mounting diameter keep floor-space and investment low for small-screw production.
Two-Axis Thread Generation
Workpiece rotation and Z-axis feed are interpolated to generate the helix; cutter rotation and X-axis feed control material removal.
1–24 Thread Starts
The CNC control programs up to 24 thread starts without manual indexing, ideal for multi-start worms and lead screws.
±20° Helix Angle Range
A maximum helix angle of ±20° covers both shallow-pitch ball screws and steeper worm profiles.
High-Precision Profile Accuracy
Profile error within a 2π arc is held to 0.006 mm, with cumulative error over any 300 mm span within 0.012 mm.
Why Choose the CGK-403
A compact whirlwind mill fills the gap between conventional thread cutting and large-bed screw mills.
Small-Part Specialization
Designed specifically for small ball screws, trapezoidal screws and worms from Φ12 mm to Φ50 mm.
Mirror-Like Thread Finish
Thread surface roughness reaches Ra≤0.3 μm, reducing or eliminating finish grinding on many components.
One Setup, Complete Profile
The thread profile is milled in one continuous pass, improving consistency versus multi-operation turning.
Suitable for Long/Diameter Ratios up to 40
The stated accuracy applies to parts with length-to-diameter ratios up to 40:1, covering most small screw geometries.
Wide Thread Variety
Ball-screw raceways, trapezoidal threads, worm profiles and custom thread forms are all machined with the same setup logic.
Automation-Ready
The compact footprint and CNC control make the machine easy to integrate with gantry loaders and automated cells for high-volume production.
CGK-403 — Technical Data
Main technical performance indicators from the factory datasheet.
| Parameter | Unit | CGK-403 |
|---|---|---|
| Model | — | CNC screw whirlwind milling machine |
| Max mounting diameter | mm | Φ100 |
| Max distance between centers | mm | 500 |
| Max milling diameter | mm | Φ50 |
| Min milling diameter | mm | Φ12 |
| Workpiece speed | rpm | 0–20 |
| Whirlwind milling head speed | rpm | 500–2000 |
| X-axis travel | mm | +100 / −30 |
| Helix angle | — | ±20° |
| Millable thread starts | — | 1–24 |
| Profile accuracy within 2π arc (L/D ≤ 40) | mm | ≤0.006 |
| Cumulative accuracy over 300 mm (L/D ≤ 40) | mm | ≤0.012 |
| Thread surface roughness | μm | Ra≤0.3 |
Applications
Built for manufacturers of small precision threaded components in the rolling-function-components industry.
Frequently Asked Questions
What parts is the CGK-403 designed for?
How does internal whirlwind milling work?
What accuracy can the CGK-403 hold?
What is the maximum part size?
Can it machine multi-start threads?
What information is needed for a quotation?
Configure a CGK-403 Screw Whirlwind Milling Machine
Send us your part diameter and length, thread form and pitch, number of starts, helix angle, accuracy class, surface-finish requirement, material and annual volume. Our engineering team will configure the CGK-403 and prepare a quotation.
Request a Quote →
