Machine Comparison
Hermle C 32 U vs Hermle C 250
Hermle vs Hermle · 5-Axis Machining Centers
Summary
The Hermle C 32 U and the Hermle C 250 are Hermle 5-axis machining centers with the same 15,000 rpm standard speed and a 20 kW standard spindle rating. The C 32 U is slightly larger, with 650 x 600 x 500 mm of X/Y/Z travel against 600 x 550 x 450 mm, and it changes tools faster at 3.5 seconds chip-to-chip against approx. 6 s.
Table load depends on the C 250's table: 300 kg on the swivelling rotary table or 1,100 kg on the rigid clamping table, against 500 kg (1,102 lb) on the C 32 U. The C 32 U carries 36 positions (expandable to 87) against 30 pockets standard. The C 250 offers a 42 kW rating at 20,000 rpm, a Heidenhain TNC7 control, and weighs approx. 8.2 t against 9,500 kg (20,944 lb).
Specifications Comparison
| Specification | Hermle C 32 U | Hermle C 250 |
|---|---|---|
| X-Axis Travel | 650 mm (25.6 in) ▲ | 600 mm |
| Y-Axis Travel | 600 mm (23.6 in) ▲ | 550 mm |
| Z-Axis Travel | 500 mm (19.7 in) ▲ | 450 mm |
| Max Table / Workpiece Load | 500 kg (1,102 lb) ▲ | 300 kg (swivelling rotary table); 1,100 kg (rigid clamping table) |
| Max Spindle Speed | 15,000 rpm (standard); up to 42,000 rpm optional | 15,000 rpm (SK 40); 16,000 rpm or 20,000 rpm (HSK A 63) |
| Spindle Power | 20 kW (27 hp) standard | 20 kW at 15,000 / 16,000 rpm; 42 kW at 20,000 rpm (20% c.d.f.) |
| Spindle Taper / Nose | HSK-A63 | SK 40 / HSK A 63 |
| Tool Capacity | 36 positions (expandable to 87) | 30 pockets standard (additional magazines ZM 30 / ZM 50 / ZM 88 k / ZM 216) |
| Chip-to-Chip Time | 3.5 seconds ▲ | approx. 6 s |
| Control | Heidenhain TNC 640 or Siemens 840D sl | Heidenhain TNC7 |
| Machine Weight | 9,500 kg (20,944 lb) | approx. 8.2 t |
Advantages
Hermle C 32 U
- 650 x 600 x 500 mm travel against 600 x 550 x 450 mm
- 3.5 seconds chip-to-chip against approx. 6 s
- 36 tool positions (expandable to 87) against 30 pockets standard
- Optional spindles up to 42,000 rpm
Hermle C 250
- Rigid clamping table option rated 1,100 kg
- 42 kW rating at 20,000 rpm with the HSK A 63 spindle
- Heidenhain TNC7 control
- Lighter at approx. 8.2 t against 9,500 kg (20,944 lb)
Verdict
Choose the Hermle C 32 U for aerospace and medical 5-axis production, where 650 mm of X travel, 3.5 seconds chip-to-chip and up to 87 tools help on complex contoured parts. Choose the Hermle C 250 for precision mold and die work and small, awkward medical parts, where the TNC7 control and the option of a 1,100 kg rigid clamping table give flexibility on a smaller machine.