For rotor cutters
The PG 700 CNC from the SRM Line is designed for grinding the cutters of screw pump and compressor rotors; cutters up to Ø 500 mm are ground.
Profile cutter grinding
JUNGNER PG 700 CNC
High-precision profile cutter grinding machine for the cutters of screw pump and compressor rotors
Ø 500 mm Max. cutter diameter
43 kW Grinding spindle power
25,000 rpm Spindle speed
700 mm X-axis stroke
0.25 µm Probe repeatability (2σ)
ⓘ Manufacturer data (JUNGNER product page and technical specification). Values may change and vary; not binding on Boztaş.
Why PG 700 CNC?
Reduces finish grinding
According to the manufacturer, the accuracy achieved can reduce or completely remove the need for finish grinding; the flexible swivelling grinding spindle, integrated probe measuring and dedicated software support this.
Integrated measuring
Renishaw MP 250 strain-gauge probe; 0.25 µm unidirectional repeatability (2σ), ±1 µm 3D lobing in X, Y and Z, 0.08 N trigger force.
Technical data
| Feature | PG 700 CNC |
|---|---|
| Axes | |
| X axis: stroke / rapid traverse / positioning accuracy | 700 mm / 10 m/s / 1.2 µm |
| Y axis: stroke / rapid traverse / positioning accuracy | 300 mm / 10 m/s / 1.2 µm |
| Z axis: stroke / rapid traverse / positioning accuracy | 300 mm / 10 m/s / 1.2 µm |
| Linear-axis resolution | 0.0001 mm |
| B axis: stroke / speed / accuracy | Endless (∞) / 37.5 rpm / ±1.8″ |
| C axis: stroke / speed / accuracy | ±95° / 2,160 °/min / ±1.8″ |
| Rotary-axis resolution | 0.0001° |
| Measuring system | Heidenhain external encoders on all axes |
| Workhead and tool capacity | |
| Clamping interface | HSK-100 or ISO-50 |
| Max. cutter diameter | Ø 500 mm |
| Grinding spindle and wheel | |
| Spindle | Flexible swivelling grinding spindle |
| Spindle speed | 0–25,000 rpm |
| Spindle power | 43 kW |
| Max. grinding wheel diameter | Ø 300 mm |
| Measuring | |
| Measuring probe | Renishaw MP 250, touch trigger, strain-gauge technology |
| Unidirectional repeatability | 0.25 µm (2σ) |
| 3D lobing (X, Y, Z) | ±1 µm |
| Stylus trigger force | 0.08 N |
| Dressing | |
| Dresser speed | 4,000 rpm |
| Max. dresser wheel | Ø 150 mm |
| Control | |
| CNC control | Fanuc 30iMB |
| Software | Dedicated profile-cutter grinding software, integrated probe measuring functions |
Manufacturer data (JUNGNER product page and technical specification). Rapid-traverse values are reproduced in the unit given in the specification (m/sec).
Technical data is taken from information published by the manufacturer. The manufacturer may change it without notice, and values may vary with the model and the machine configuration. The data is for information only and is not binding on Boztaş; binding values are stated only in a written quotation.
Processes that can be combined on this machine
- Profile cutter grinding
- Integrated probe measuring
- Wheel dressing
Typical workpieces
- Cutters for screw pump and compressor rotors
Related industries: Machine BuildingHydraulics
Frequently asked questions
Which cutters is the PG 700 CNC designed for?
For the cutters that machine screw pump and compressor rotors. The maximum cutter diameter is Ø 500 mm; the workhead clamping interface is HSK-100 or ISO-50.
Can cutters be measured on the machine?
Yes; the machine has integrated probe measuring functions. The Renishaw MP 250 probe offers 0.25 µm (2σ) unidirectional repeatability, ±1 µm 3D lobing in X, Y and Z and a 0.08 N trigger force.
What are the spindle and wheel capacities?
The grinding spindle has 43 kW at 0–25,000 rpm, with a maximum wheel diameter of Ø 300 mm. The dressing unit runs at 4,000 rpm with dresser wheels up to Ø 150 mm.
Other JUNGNER models
JUNGNER TG 560 CNC 5-axis precision CNC grinding machine for resharpening and manufacturing tools, cutters and broaches 5 + 1560 mm1.2 µm Technical data 
JUNGNER TG 600 CNC CNC tool and cutter grinder whose multi-spindle turret grinds complex tool geometries in one set-up 3–611–18.5 kWØ 300 mm Technical data 
JUNGNER MG 560 CNC 5-axis precision CNC grinding machine for the complete manufacturing of cold swaging rifling mandrels 5 + 1600 rpm11.5 kW Technical data