German ELB CNC Vertical Grinding Machine

Manufacturer: German ELB Company CNC System: Siemens 840 D

Machine Tool Introduction: This machine tool is manufactured by the German ELB Company. As a world-leading manufacturer of grinding machines, the German ELB Company was the first European grinding machine enterprise to enter the Chinese market after the founding of the People's Republic of China. It is also a long-term strategic supplier for China's aero-engine industry.

The machine is a high rigidity vertical grinding machine designed and manufactured for processing high-precision large cylindrical and disc parts, featuring a gantry, double-slide, and double-grinding head structure. A single clamping can complete the compound grinding processing of the workpiece's inner and outer circles and end faces. The grinding head can be tilted +/- 90° to achieve high-precision taper processing.

The above is a schematic diagram of the machine tool.

This equipment is a heavy-duty machining tool with the grinding head slide located on a wide beam. The slide guide rail adopts a combined structure of ramp-style dovetail and flat guide rail, enhancing the stability and precision of processing. The radial bearing of the rotary worktable uses a roller bearing, and the axial direction uses a plane bearing with organic material coating. The machine tool worktable plane accuracy can reach +/- 0.004 mm, and the radial accuracy reaches 0.002 mm.

Main Technical Parameters:

• Worktable diameter Ø 1500 mm

• Swing diameter Ø 1700 mm

• External grinding diameter range Ø 150 - 1500 mm

• Internal grinding diameter range Ø 250 - 1300 mm

• Workpiece height (internal/external) 350 / 750 mm

• Maximum workpiece weight 2000 kg

• Worktable speed 0.02-20 rpm

• Y-axis travel 750 mm

• Z-axis travel 1700 mm

• Y-axis feed rate 0.02 - 500 mm/min

• Z-axis feed rate 0.02 - 1800 mm/min

• Grinding head main shaft power 10 - 46 kW

• Grinding head main shaft speed 1000 - 4600 rpm

• Grinding head slide travel 550 mm

• Maximum grinding wheel size Ø 400 x 80 mm

• Grinding head main shaft tilting range +/- 90°

This machine can be used for comprehensive processing of inner and outer rings, inner and outer diameters, end faces, and raceways of large roller bearings. It is also suitable for precision machining of key components of aircraft engines and grinding of gear raceways in wind power gearboxes. The equipment was imported from Germany and underwent a comprehensive upgrade in 2022, upgrading the control system to Siemens 840D and replacing the entire electrical system. It is now being commissioned and for sale in China. Equipment photos: CNC system photo (upgraded to Siemens 840 D system).