Name of a product | Inventory number | Producer | YOM | Parameters | ||
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BUC 63 A /3000 |
231959 | TOS Čelákovice | 1988 | Max. diameter of grinding: 630 mm Max. length of grinding: 3000 mm Max. weight of workpiece: 2500 kg Device for internal grinding: NO |
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30-15 S 3030 |
241066 | WALDRICH COBURG GmbH | 1971 | Max. length of grinding: 5540 mm Max. width of grinding: 1500 mm Max. weight of workpiece: kg Travel X-axis: 5400 mm Travel Y-axis: 1700 mm Travel Z-axis: 1545 mm |
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540L |
241369 | Jones & Shipman | Max. length of grinding: 480 mm Max. width of grinding: 170 mm Max. workpiece height: mm Spindle bearing grinders: Horizontální Table dimensions: 450x150 mm Main motor power: 1,5 kW |
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AWH 600 CNC |
241426 | PMT MACHINES | 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 |
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BH 25A/1500 |
201837 | TOS Hostivař | 1983 | Max. diameter of grinding: 250 mm Max. length of grinding: 1500 mm Max. weight of workpiece: 300 kg Device for internal grinding: Distance between centres: 1500 mm Machine dimensions l x w x h: 6220 x 2370 mm |
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BHU 32 |
231872 | TOS Hostivař | Max. diameter of grinding: 320 mm Max. length of grinding: 2000 mm Max. weight of workpiece: 250 kg Device for internal grinding: NO Distance between centres: 630 mm Main motor power: 7,5 kW |
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BKO 50/1700 |
241346 | TOS Hostivař | Max. diameter of grinding: 500 mm Max. length of grinding: 1700 mm Max. weight of workpiece: 120 kg Main motor power: 7,5 kW Machine dimensions l x w x h: 4830x2550 mm Machine weight: 7800 kg |
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BKUJ 50 |
231418 | TOS Hostivař | 1966 | Max. diameter of grinding: 500 mm Max. length of grinding: 1800 mm Max. weight of workpiece: 250 kg Machine dimensions l x w x h: 4720 x 2100 x 1750 mm Machine weight: 7800 kg Main motor power: 12,5 kW |
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BN 102 NC |
201544 | Erwin Junker | 2001 | Max. diameter grinding wheel: 280 mm Max. dimensions of workpiece: 630 mm Machine weight: 1000 kg |
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BPH 20 |
202054 | Považské Strojárne | Max. length of grinding: 630 mm Max. width of grinding: 200 mm Max. workpiece height: 300 mm Spindle bearing grinders: Horizontální Clamping area of table: 200 x 630 mm Max. weight of workpiece: 180 kg |
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BPH 320 A |
231741 | TOS Hostivař | 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 |
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BPH 320 A |
241304 | TOS Hostivař | 1989 | 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 |
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BPH 320 A |
241105 | TOS Hostivař | 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 |
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BPV 40A/2000 |
231565 | TOS Hostivař | Max. length of grinding: 2000 mm Max. width of grinding: 400 mm Max. workpiece height: 500 mm Spindle bearing grinders: Vertikální Main motor power: 70 kW Machine dimensions l x w x h: 7600 x 2900 x 2890 mm |
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BPV 700/2 |
221374 | Kovosvit Holoubkov | Max. length of grinding: mm Clamping area of table: 2000 x 600 mm Max. width of grinding: 700 mm Spindle bearing grinders: Vertikální Main motor power: 22 kW Machine weight: 12000 kg |
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BRH 20 N |
201596 | Považské Strojárne | 1971 | Max. length of grinding: 400 mm Max. width of grinding: 230 mm Max. workpiece height: 460 mm Spindle bearing grinders: Horizontální |
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BRH 40/1500 |
241327 | Považské Strojárne | 1997 | Max. length of grinding: 1500 mm Max. width of grinding: 470 mm Max. workpiece height: 500 mm Spindle bearing grinders: Horizontální Work surface: 400x1500 mm Machine dimensions l x w x h: 5650x2300x2000 mm |
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BU 16 |
241031 | TOS Hostivař | Max. diameter of grinding: 160 mm Max. length of grinding: 320 mm Max. weight of workpiece: 25 kg Device for internal grinding: NO Spindle taper: Morse 3 . Spindle speed: 0 - 2812 /min. |
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BU 25H/750 |
231516 | TOS Hostivař | 1995 | Max. diameter of grinding: 250 mm Max. length of grinding: 750 mm Max. weight of workpiece: kg Device for internal grinding: YES |
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BU 28 1000 |
241249 | TOS Hostivař | Max. diameter of grinding: 295 mm Max. length of grinding: 1000 mm Max. weight of workpiece: 60 kg Device for internal grinding: YES Main motor power: 6,6 kW Machine dimensions l x w x h: 2800x1450x1480 mm |
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BU 28/630 |
241275 | TOS Čelákovice | Control system Mitsubishi: M 70 Max. diameter of grinding: 295 mm Max. length of grinding: 630 mm Max. weight of workpiece: 65 kg Device for internal grinding: NO Main motor power: 4 kW |
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BUA 16 A |
231932 | TOS Hostivař | Max. diameter of grinding: 160 mm Max. length of grinding: 250 mm Max. weight of workpiece: 10 kg Device for internal grinding: YES Machine dimensions l x w x h: 1900x1100x1500 mm Machine weight: 1400 kg |
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BUA 20 |
241032 | TOS Hostivař | Max. diameter of grinding: 200 mm Max. length of grinding: 450 mm Max. weight of workpiece: 45 kg Device for internal grinding: NO Machine dimensions l x w x h: 2790 x 1570 mm Machine weight: 2100 kg |
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BUA 25/1000 NC |
201393 | TOS Hostivař | Control system Siemens: Simatic S7-1200 Max. diameter of grinding: 310 mm Max. length of grinding: 1000 mm Max. weight of workpiece: 60 kg Device for internal grinding: YES Machine dimensions l x w x h: 3775x2300x2000 mm |
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BUA 25/630 |
231969 | TOS Hostivař | 1988 | Max. diameter of grinding: 250 mm Max. length of grinding: 630 mm Max. weight of workpiece: 60 kg Device for internal grinding: YES Main motor power: 4 kW Machine weight: 3100 kg |
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.