PCD Scroll End Mill
Engineered exclusively for the most demanding involute profiling in the aerospace, automotive, and fluid handling industries. Our custom PCD scroll end mills are designed to conquer the extreme challenges of machining deep, narrow scroll channels for aerospace environmental control systems (ECS), high-vacuum pumps, and advanced EV thermal management systems. By combining ultra-rigid tool bodies with specialized PCD edge geometries, we eliminate thin-wall chatter and deliver the perfect perpendicularity and mirror-like finishes required for absolute hermetic sealing.
Ideal Machining Operations
Aerospace Environmental Control Systems Machining ultra-lightweight, high-precision scroll compressors and avionics cooling pumps for commercial aircraft and satellites.
Scroll Compressors & Vacuum Pumps High-efficiency milling of fixed (stator) and orbiting (rotor) scrolls for industrial oil-free air compressors and semiconductor-grade vacuum pumps.
EV Thermal Management Systems Precision machining of automotive electronic compressor scrolls for modern electric vehicles.
Thin-Wall & Floor Finishing for Hermetic Seals Simultaneously achieving strict perpendicularity on the delicate scroll wraps and absolute flatness on the scroll floor for leak-free sealing across all demanding industries.

- Extended Tool Life
- Reduced Cycle Time
- Consistent Precision
- Mirror Surface Finish
Advantages of Sundi Scroll Milling Cutters
Absolute Perpendicularity & Zero Deflection
Deep scroll channels often cause standard tools to deflect (bend), creating tapered walls that destroy compressor efficiency. Our scroll mills feature maximized core diameters and high-rigidity heavy-metal shanks to ensure perfectly straight 90-degree walls.
Hermetic Seal Surface Finishes
The precision-lapped PCD cutting edges and custom wiper geometries generate flawless, mirror-like finishes on both the scroll walls and the floor, strictly meeting the critical sealing requirements of vacuum pumps and compressors without the need for gaskets.
Chatter-Free Thin-Wall Milling
The involute "wraps" of a scroll are incredibly thin and prone to harmonic vibration. We engineer specific variable pitch and relief angles to actively suppress chatter, protecting the fragile aerospace and automotive thin walls from distortion or breakout.
Massive Chip Evacuation
Machining deep, curved, narrow slots creates a severe chip-packing hazard. Our custom flute capacities, paired with high-pressure through-coolant designs, forcefully blast chips out of the involute path, preventing recutting and tool snapping.