YOM:2009
Max. diameter of workpiece: 430 mm
Max. diameter of grinded hole: 250 mm
Max. depth of grinding: mm
Travel Z-axis: 730 mm
Travel X-axis: 100 mm
Main motor power: 5,5 kW
YOM:1988
Max. diameter of grinding: 280 mm
Max. length of grinding: 630 mm
Max. weight of workpiece: 60 kg
Device for internal grinding:
Machine weight: 3000 kg
Max. diameter of grinding: 250 mm
Max. length of grinding: 1500 mm
Max. weight of workpiece: kg
Device for internal grinding: NO
Max. height of grinding: 125 mm
Table dimensions: 2060 x 140 mm
Max. length of grinding: 1000 mm
Max. width of grinding: 320 mm
Max. workpiece height: 350 mm
Spindle bearing grinders: Horizontální
Main motor power: 4 kW
Total input: 6,8 kVA
YOM:2016
Max. diameter of grinding: 300 mm
Max. length of grinding: 600 mm
Max. weight of workpiece: 150 kg
Device for internal grinding: YES
Grinding spindle speed: 10 - 300 /min
Main motor power: 3,7 kW
YOM:1987
Max. diameter of grinding: 320 mm
Max. length of grinding: 1500 mm
Max. weight of workpiece: 350 kg
Device for internal grinding: NO
Total input: 16 kVA
Machine dimensions l x w x h: 4190 x 1976 x 1668 mm
YOM:2011
Control system Fanuc: 0i - TC
Max. diameter of grinding: 190 mm
Max. length of grinding: 400 mm
Max. weight of workpiece: 80 kg
Device for internal grinding: YES
Machine dimensions l x w x h: 2500 x 1900 x 1800 mm
YOM:2022
Control system Siemens: Sinumerik 840D Sl
Max. diameter of grinding: 500 mm
Max. length of grinding: 2000 mm
Max. weight of workpiece: 500 kg
Device for internal grinding: YES
Main motor power: 11 kW
YOM:2007
Control system Siemens: Sinumerik 840 D
Max. diameter of grinding: 350 mm
Max. length of grinding: 600 mm
Max. weight of workpiece: 80 kg
Device for internal grinding: NO
Travel X-axis: 400 mm
Grinding is a technology of precision chip machining. Nowadays, it is possible to reach precision in order of tenths of micrometers and surface roughness of up to 0,2 micrometer. Grinders are thus indispensable in the machinery industry and form an important part of the production process. In general, grinding is a technology that works on the principle of the material removal from the surface layer of the workpiece with fine grains of abrasive material, which are most often bonded to the grinding wheel.
Among the cylindrical grinders we differentiate grinders with centers and without centers. These machines are used for grinding internal and external rotating surfaces.
In case of center grinders the workpiece is usually clamped between centers and rotation is realized using a driver, which is fixed to the surface of the workpiece and tied to headstock. In most cases the workpiece rotates against the direction of rotation of the grinding wheel. Most common models from producer TOS we can mention:
Grinding is realized using the rotation of the grinding wheel, which grinds the surface of the workpiece as it rotates. Most popular producers of such grinders are: FERMAT, TOS, STUDER, DANOBAT, KELLENBERGER, ERWIN JUNKER, SCHAUDT.
Centerless grinders are also intended for grinding rotary surfaces. The clamping of the workpiece on the machine is different. It is supported with support ruler and the workpiece is placed between two discs – abrasive and drifting. The grinding wheel usually spins faster and does the grinding itself. The drive disc is most often made of flexible material (for example rubber) and ensures sufficient pressure.
A special category of grinders are grinders used for grinding of internal rotating surfaces. They works similarly to center grinders. However, the workpiece is just clamped on one side in the chuck or collet so that the hole can be ground from the other side.