United Grinding Blohm Profimat MT
Key Specifications
Spindle Power
grinding length
table travel
center height
wheel speed
workpiece weight
Overview
The United Grinding Blohm Profimat MT is a high-performance CNC surface and profile grinding machine designed for creep-feed grinding, reciprocating surface grinding, and profile grinding of aerospace, automotive, and tooling components. Manufactured by Blohm, a brand within the United Grinding Group, the Profimat MT is part of Blohm's established Profimat series and represents a production-capable platform for demanding grinding applications where material removal rate, profile accuracy, and thermal stability are all critical process requirements.
The Profimat MT is engineered around creep-feed grinding as a primary process — a grinding strategy where the wheel takes deep cuts at slow workpiece feedrates, removing large amounts of material per pass compared to conventional reciprocating surface grinding. Creep-feed grinding is the dominant process for aerospace turbine blade root profiles, blisk pocket grinding, and precision die and mold surface grinding, and the Profimat MT's spindle power, table clamping system, and coolant delivery are all dimensioned for sustained high-power creep-feed cycles rather than light-duty surface finishing.
The machine's grinding spindle provides high power output necessary for creep-feed material removal in superalloys, hardened steels, and ceramics. Blohm's integrated coolant delivery system is designed for high-flow, high-pressure application directly into the grinding zone, providing effective thermal control during heavy grinding passes where workpiece temperature rise would otherwise compromise surface integrity and dimensional stability. The machine supports both aluminum oxide and CBN/diamond wheel specifications, with the spindle speed range and wheel flange system accommodating the high peripheral speeds required for vitrified CBN grinding in production environments.
Blohm's CNC dressing system on the Profimat MT uses a diamond roll dresser to maintain precise wheel profiles throughout a production run. Profile dressing is controlled by the machine's CNC, allowing complex form profiles — turbine blade root fir-trees, aerospace bracket pockets, automotive camshaft lobes — to be maintained automatically across thousands of parts without manual operator dressing intervention. This automated profile maintenance is a key production efficiency feature for aerospace subcontractors and automotive powertrain suppliers that run high-volume profile grinding cycles.
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Length | Up to 1,500 mm (59 in) table travel (configuration-dependent) |
| Table Travel | 1,000 – 1,500 mm (39 – 59 in) |
| Center Height | N/A (surface/profile grinder) |
| Wheel Speed | Up to 80 m/s (CBN-capable configuration) |
| Workpiece Weight | Up to 500 kg (1,100 lb) on table |
| Grinding Accuracy | Profile accuracy ± 2 µm, flatness < 2 µm/300 mm |
| Spindle Motor Power | Up to 37 kW (50 hp) peak |
| Control System | Fanuc 31i + Blohm grinding software |
| Dressing System | CNC diamond roll dresser (integrated) |
| Machine Weight | Approx. 15,000 kg (33,000 lb) |
Strengths & Limitations
Strengths
- Engineered specifically for creep-feed grinding — spindle power, table clamping, and coolant delivery are optimized for sustained high-material-removal grinding of superalloys and hardened steels
- CNC diamond roll dressing system automatically maintains complex profile wheel geometry across production runs, eliminating manual dressing downtime on aerospace and automotive profile parts
- CBN-capable wheel system at up to 80 m/s enables high-productivity vitrified CBN grinding for superalloy turbine components with extended wheel life
- Handles workpieces up to 500 kg on the magnetic chuck or fixture table — large capacity for surface and profile grinding of aerospace structures and die components
Limitations
- Large machine footprint and significant installation requirements — Profimat MT requires dedicated foundation, high-volume coolant filtration, and three-phase power infrastructure
- High acquisition cost is best justified on aerospace, turbine, and automotive powertrain profile grinding programs — general surface grinding does not require this level of capability
- Creep-feed wheel and dressing system management requires specialized operator knowledge — process setup for new profiles demands experienced grinding engineers
Best For
Frequently Asked Questions
01
Creep-feed grinding is a grinding process where the workpiece moves at a very slow feedrate while the grinding wheel takes a deep cut — the opposite of conventional reciprocating surface grinding where the wheel takes shallow cuts at high feedrates. Creep-feed grinding removes large amounts of material per pass with lower grinding forces than equivalent multi-pass conventional grinding, making it efficient for complex profile generation in aerospace superalloys and hardened steels. The Profimat MT is specifically dimensioned for creep-feed with high spindle power, rigid table clamping, and high-volume coolant delivery.
02
Yes. The Profimat MT supports CBN (cubic boron nitride) wheel specifications at wheel peripheral speeds up to 80 m/s in high-speed configurations. Vitrified CBN wheels are used extensively on nickel superalloy turbine components and hardened automotive steel components where CBN's hardness and thermal stability provide longer wheel life and improved surface integrity compared to conventional abrasive wheels. The machine's dressing system includes a diamond roll for vitrified CBN wheel conditioning.
03
The Profimat MT's CNC diamond roll dressing system can generate and maintain a wide range of complex profiles in the grinding wheel, including turbine blade fir-tree root profiles, automotive camshaft lobe contours, precision die cavity radii, and complex angular form profiles. The CNC dressing cycle is programmed using Blohm's grinding software interface, which translates profile geometry data into dressing roll traversal paths. Automated re-dressing between parts maintains profile accuracy across production runs without operator intervention.
Videos
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