Hardinge Kellenberger TM300
Key Specifications
Y Travel
Max Spindle
Spindle Taper
Tool Capacity
Max Turn Length
max turning diameter
Overview
The Hardinge Kellenberger TM300 is a 5-axis multifunction turning and milling center from the Kellenberger brand within the Hardinge Grinding Group, designed for complete machining of complex shaft and chucked workpieces in a single setup. With a maximum turning diameter of 700 mm, turning length of 1,500 mm, and simultaneous 5-axis capability, the TM300 bridges the gap between traditional turning centers and dedicated grinding machines by combining turning, milling, drilling, and finishing operations on one platform.
The main spindle delivers 3,500 RPM with 600 Nm of torque, providing the power needed for heavy roughing and turning operations on steel, cast iron, and hardened materials. The milling spindle uses an HSK T63 interface running at 12,000 RPM with 100 Nm of torque, enabling productive milling, drilling, and tapping operations. A 240-degree B-axis swivel gives the milling spindle full angular access for compound-angle machining, while 300 mm of Y-axis travel allows off-center milling and drilling operations.
The TM300 is available in three configurations: the base TM300 with main spindle only, the TM300S with sub-spindle for backworking operations, and the TM300ST with sub-spindle and servo tailstock for long shaft support. Sub-spindle versions offer 3,500 RPM with up to 477 Nm of torque for secondary operations and part handoff. All variants include a 40-position tool magazine and run on a Siemens SINUMERIK ONE control with a 22-inch touchscreen.
At 15,000 kg and occupying a 6,000 x 2,452 mm footprint, the TM300 is a substantial machine designed for 6-sided complete machining of complex components. The ability to turn, mill, drill, and finish parts in a single setup eliminates the accuracy losses and handling time associated with transferring workpieces between multiple machines, making it particularly valuable for aerospace landing gear components, oil and gas valve bodies, and precision industrial shafts.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | Ø 700 mm |
| Max Turning Length | 1,500 mm |
| Main Spindle Speed | 3,500 RPM |
| Main Spindle Torque | 600 Nm (442 ft-lb) |
| Milling Spindle | HSK T63, 12,000 RPM, 100 Nm (73.8 ft-lb) |
| Y-Axis Travel | 300 mm |
| B Axis Swivel | 240 degrees |
| Sub Spindle Speed | 3,500 RPM (TM300S/ST variants) |
| Sub Spindle Torque | 477 Nm / 433 Nm (TM300S / TM300ST) |
| Tool Capacity | 40 |
| Tailstock | Servo tailstock, MT5 (TM300ST variant) |
| Axes | 5-axis simultaneous |
| CNC Control | Siemens SINUMERIK ONE (22" touchscreen) |
| Floor Space Required | 6,000 x 2,452 x 2,700 mm (236.2 x 96.5 x 106.3 in) |
| Machine Weight | 15,000 kg |
| Max Spindle Speed | 3,500 rpm |
| Spindle Torque Max | 600 Nm |
| Spindle Taper | A2-8 |
| Floor Space | 6,000 × 2,452 × 2,700 mm |
| Cnc Control | Siemens SINUMERIK One with 22″ touchscreen |
Specifications sourced from kellenberger.com — verified 2026-03-28
Strengths & Limitations
Strengths
- True 5-axis simultaneous machining with B-axis and Y-axis enables complete 6-sided machining in a single setup
- HSK T63 milling spindle at 12,000 RPM with 100 Nm delivers serious milling capability beyond typical mill-turn machines
- Main spindle torque of 600 Nm handles heavy roughing and turning operations on large-diameter hardened steel components
- Three configurations (base, sub-spindle, sub-spindle plus tailstock) allow matching the machine to specific production requirements
- SINUMERIK ONE control provides latest-generation CNC platform with digital twin capability and advanced 5-axis programming
- 40-position tool magazine supports complex multi-operation jobs without tool capacity constraints
Limitations
- Machine weight of 15,000 kg and 6-meter length require significant floor space and foundation preparation
- Complexity of 5-axis multifunction machining demands highly skilled programmers and operators
- Premium pricing reflects the multifunction capability but may exceed budget for shops that could separate turning and milling operations
- Kellenberger brand is less well-known than DMG Mori or Mazak in the multifunction turning segment, potentially affecting resale value
Best For
Frequently Asked Questions
01
New Kellenberger TM300 machines typically price between $800,000 and $1,400,000 depending on configuration. The base TM300 is at the lower end, while the TM300ST with sub-spindle and servo tailstock commands the highest price. Automation integration adds further to the total investment.
02
The TM300 is the base configuration with main spindle only. The TM300S adds a sub-spindle (3,500 RPM, 477 Nm) for backworking and part handoff. The TM300ST includes both sub-spindle (433 Nm) and servo tailstock with MT5 taper for supporting long shaft workpieces during machining.
03
While the TM300 is primarily a turning and milling center, its precision and rigidity support finish turning and hard turning operations that can substitute for grinding in many applications. Dedicated grinding operations would require a separate Kellenberger grinding platform.
04
The TM300 runs on a Siemens SINUMERIK ONE control with a 22-inch touchscreen. This latest-generation platform supports 5-axis simultaneous programming, digital twin simulation, and full Industry 4.0 connectivity.
