A 12.5-meter crankshaft grinding machine is a large, precision machine tool designed for grinding crankshafts used in heavy-duty engines, such as those in marine vessels, power plants, or large industrial machinery. Below are key details about such a machine:
Key Features & Specifications
1. Max. Grinding Length: 12.5 meters (capable of handling very long crankshafts).
2. Swing Over Table: Typically 800–1500 mm (varies by model).
3. Workpiece Weight Capacity: Often 10–30+ tons (depending on machine design).
4. Grinding Wheel Diameter: Usually 600–1200 mm with high-precision balancing.
5. Control System: CNC (Computer Numerical Control) for high accuracy (±0.005 mm or better).
6. Applications:
– Marine diesel engine crankshafts (e.g., Wärtsilä, MAN B&W).
– Large industrial gas/steam turbine shafts.
– Locomotive and power generation crankshafts.
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Manufacturers & Models
– Landis (Fives Group): Landis LT2He, high-precision CNC grinders for large crankshafts.
– Naxos-Union (EMAG): Specializes in heavy-duty crankshaft grinding machines.
– AZ Spa (Italy): Offers large crankshaft grinders wit.jpg)
dvanced automation.
– JUNKER Group: High-speed grinding solutions for large components.
Process & Technology
– In-Process Gauging: Real-time measurement for precision adjustments.
– CBN Grinding Wheels: For high material removal rates and extended wheel life.
– Automatic Wheel Balancing & Dressing: Ensures consistent finish quality.
Industries Served
– Shipbuilding & marine engineering
– Oil & gas (large compressor shafts)
– Power generation (diesel/gas turbines)
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