YOM:1989
Control system Siemens: Simatic S7-300
Max. diameter of workpiece: 2.6 in
Max. diameter of grinded hole: 2.6 in
Max. depth of grinding: 1.6 in
Min. diameter of grinding: 0.4 in
Travel X-axis: 1.6 in
YOM:2022
Control system Siemens: Sinumerik 840 D
Max. diameter of grinding: 10 in
Max. length of grinding: 30 in
Max. weight of workpiece: 250 kg
Device for internal grinding: YES
Distance between centres: 30 in
Max. diameter of grinding: 10 in
Max. length of grinding: 60 in
Max. weight of workpiece: kg
Device for internal grinding: NO
Max. height of grinding: 5 in
Table dimensions: 82.4 x 5.6 in
YOM:1988
Max. diameter of grinding: 11.2 in
Max. length of grinding: 25.2 in
Max. weight of workpiece: 60 kg
Device for internal grinding:
Machine weight: 3000 kg
Control system Siemens: Simatic S7-1200
Max. diameter of grinding: 12.4 in
Max. length of grinding: 40 in
Max. weight of workpiece: 60 kg
Device for internal grinding: YES
Machine dimensions l x w x h: 151 x 92 x 80 in
YOM:2008
Max. length of grinding: 400 in
Max. width of grinding: 71.8 in
Max. workpiece height: 48 in
Spindle bearing grinders: Vertikální
Machine weight: 70000 kg
Machine dimensions l x w x h: 1008 x 400 x 204 in
YOM:2001
Max. diameter grinding wheel: 11.2 in
Max. dimensions of workpiece: 25.2 in
Machine weight: 1000 kg
YOM:1971
Max. length of grinding: 16 in
Max. width of grinding: 9.2 in
Max. workpiece height: 18.4 in
Spindle bearing grinders: Horizontální
YOM:1983
Max. diameter of grinding: 10 in
Max. length of grinding: 60 in
Max. weight of workpiece: 300 kg
Device for internal grinding:
Distance between centres: 60 in
Machine dimensions l x w x h: 248.8 x 94.8 in
YOM:2022
Control system Siemens: Sinumerik 840D Sl
Max. diameter of grinding: 20 in
Max. length of grinding: 40 in
Max. weight of workpiece: 500 kg
Device for internal grinding: YES
Main motor power: 11 kW
YOM:2022
Control system Siemens: Sinumerik 840D Sl
Max. diameter of grinding: 20 in
Max. length of grinding: 80 in
Max. weight of workpiece: 500 kg
Device for internal grinding: YES
Main motor power: 11 kW
YOM:2022
Control system Siemens: Sinumerik 840D Sl - 802 D si - Sinumerik 840D Sl - 802 D si
Max. diameter of grinding: 25.2 in
Max. length of grinding: 120 in
Max. weight of workpiece: 3000 kg
Device for internal grinding: YES
Main motor power: 18,5 kW
Max. length of grinding: 25.2 in
Max. width of grinding: 8 in
Max. workpiece height: 12 in
Spindle bearing grinders: Horizontální
Clamping area of table: 8 x 25.2 in
Max. weight of workpiece: 180 kg
YOM:2011
Control system Fanuc: 0i - TC
Max. diameter of grinding: 7.6 in
Max. length of grinding: 16 in
Max. weight of workpiece: 80 kg
Device for internal grinding: YES
Machine dimensions l x w x h: 100 x 76 x 72 in
YOM:1980
Control system Kavalír: K51-1
Max. diameter of grinding: 34 in
Max. length of grinding: 80 in
Max. weight of workpiece: kg
Device for internal grinding: NO
Max. length of grinding: 0 in
Clamping area of table: 80 x 24 in
Max. width of grinding: 28 in
Spindle bearing grinders: Vertikální
Main motor power: 22 kW
Machine weight: 12000 kg
YOM:2001
Control system Siemens: Simatic S7
Max. length of grinding: 0 in
Max. width of grinding: 52 in
Max. workpiece height: 0 in
Spindle bearing grinders: Horizontální
Total input: 58 kVA
Max. diameter of grinding: 11.2 in
Max. length of grinding: 25.2 in
Max. weight of workpiece: 70 kg
Device for internal grinding: YES
Distance between centres: 25.2 in
Main motor power: 9,3 kW
YOM:2002
Control system Siemens: Simatic OP17
Max. diameter of grinding: 12.8 in
Max. length of grinding: 80 in
Max. weight of workpiece: 350 kg
Device for internal grinding: NO
Machine dimensions l x w x h: 184 x 79.2 x 70.4 in
YOM:2009
Max. diameter of workpiece: 17.2 in
Max. diameter of grinded hole: 10 in
Max. depth of grinding: 0 in
Travel Z-axis: 29.2 in
Travel X-axis: 4 in
Main motor power: 5,5 kW
YOM:2016
Max. length of grinding: 40.8 in
Max. width of grinding: 12.2 in
Max. workpiece height: 15.2 in
Spindle bearing grinders: Horizontální
Main motor power: 4 kW
Max. weight of workpiece: 400 kg
YOM:2019
Max. diameter of grinding: 12.8 in
Max. length of grinding: 40 in
Max. weight of workpiece: 150 kg
Device for internal grinding:
Spindle taper: MT 4 .
Machine dimensions l x w x h: 170.76 x 70.4 x 61.8 in
Max. length of grinding: 40 in
Max. width of grinding: 12.8 in
Max. workpiece height: 14 in
Spindle bearing grinders: Horizontální
Main motor power: 4 kW
Total input: 6,8 kVA
YOM:1993
Max. length of grinding: 60 in
Max. width of grinding: 20 in
Max. workpiece height: 22 in
Spindle bearing grinders: Horizontální
Machine dimensions l x w x h: 135.2 x 72 x 95.6 in
Machine weight: 14000 kg
YOM:2001
Control system Fanuc: 160 i - MB control
Max. diameter grinding wheel: 0 in
Max. dimensions of workpiece: 14.4 x 10 x 10 in
Table dimensions: 36 x 10.4 in
Travel X-axis: 14.8 in
Travel Y-axis: 10 in
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.