PRECISION ROTARY AUTOMATIC CYCLE (PRAC)
Fully Automatic. Ultra-Precise. Built for Speed.
The Precision Rotary Automatic Cycle (PRAC) is the pinnacle of rotary grinding automation. Featuring servo-controlled downfeed and automatic spindle positioning using a rotary actuator, the PRAC allows full-cycle A-B side grinding with minimal operator input. It’s ideal for production environments demanding speed, repeatability, and superior surface finishes.
✅ Key Benefits
- Servo motor controlled downfeed to 0.0001″ resolution
- Spindle auto-positions over part using rotary actuator
- Capable of A-B side grinding for full-face finishing
- 15.75″ rotary magnetic chuck handles large workpieces
- Allen-Bradley controls ensure cycle consistency
- Wired for 230V or 460V for flexible integration
- 7.5 HP spindle standard for powerful grinding
- Automation integration
| Feature | Specification |
|---|---|
| Chuck Size | 15.75″ Diameter Rotary Magnetic |
| Downfeed Type | Automatic, 0.0001″ (Servo Motor) |
| Spindle Positioning | Automatic via Rotary Actuator |
| Coolant System | 32-Gallon Tank |
| Spindle Motor | 7.5 HP (Standard) |
| Control | Allen-Bradley Processor |
| Electrical | Wired for 230V or 460V |
| Pneumatics / Hydraulics | Automation Integration |
| Machine Type | Fully Automatic Rotary Surface Grinder |
Ideal For
- High-volume rotary grinding
- Precision finishing with minimal operator input
- Shops requiring full A/B side grinding capability
- Facilities equipped for automation
Why Choose Swisher Finishing Systems?
Because when precision matters, so does partnership.
At Swisher Finishing Systems, we don’t just build grinders—we build relationships. Every machine we deliver carries 90+ years of proven performance, a hands-on commitment to your success, and the engineering depth of Crankshaft Machine Group behind it.
With Swisher, you get:
- A collaborative team of engineers and support specialists
- Custom solutions built around your workflow—not the other way around
- Deep application knowledge in grinding, finishing, and automation
- Machines designed to last decades, not product cycles
- Straight answers, quick support, and zero red tape
“If it’s worth grinding, it’s worth grinding with a Swisher.”
That’s not a tagline—it’s a promise backed by every rebuild, every retrofit, every project we stand behind.
Let’s get it right. Together.
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