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S7640 is mainly used in tool factories and tool workshop, leadscrew nut workshop of machinery factories to grind cylindrical & conic internal threads with V -typed & circular profiles.
Equipeed with automatic wheel dresser, it can effect onw way or 2 way grinding.
Precison rolling bearings used on wheel spindle, speed of which can be steplessly varied through a frequency converter motor.
specifications
| |
Model |
S7640A |
|||
| Type | Ø400X350 | ||||
| max.chuck diameter | mm | Ø 600 | |||
| piece length | mm | 400 | |||
| centre height | mm | 320 | |||
| thread diameter ground | V-typed | mm | Ø150-Ø400 | ||
| Circular | mm | Ø150-Ø280 |
|||
| |
Conical |
mm |
120 |
||
| max.thread | |||||
| length ground |
Cylindrical |
mm |
350 | ||
| thread pitch ground | Metric | mm | 1.5-60 | ||
| British |
teeth/inch | 1/1"-12/1" | |||
| max.helix angle of thread ground | R8°, L8° | ||||
| number of starts | 1,2,3,4 | ||||
| |
In grinding |
r/min |
0.5-10 |
||
| work rotation | |||||
| In rapid return | r/min | 30 | |||
| max. longitudinal traverse of table | mm | 750 | |||
| cross movement of wheelhead | mm | 0-205 | |||
| graduation on cross feed |
mm |
0.01/0.005 | |||
| hand wheel : coarse /fine | |||||
| cross feed for one revolution |
mm |
2 |
|||
| of cross feed hand wheel | |||||
| wheel spindle rotation | r/min | 4000-10000 | |||
| max.wheel diameter | mm | Ø125 | |||
| min.wheel diameter | mm | Ø80 | |||
| machine size (LxWxH) | mm | 3206 x 1642 x 1750 | |||
| machine weight | Kg | 5800 | |||
| working accuracy |
For V-typed thread with the pitch not more than 6 mm |
adjacent |
mm |
±0.005 |
|
| On 25mm |
mm | ±0.007 |
|||
| On 100mm |
mm |
±0.007 |
|||
Strong fumigated wooden package is applied for transportation by sea or by land.
Being the No.1 thread grindign machine maker,we provide fine quality and reliable performance machines, and the good quality service for our customers. For the technical questions, we have the R&D team of rich experince, complete after sale service, etc. So that, you will enjoy the experince of using our products.
Shaanxi Hanjiang Machine Tool Co., Ltd, the only complex thread grinding machine manufacturer in China since 1969.Our main products: high precision CNC / manual universal thread grinding machines, internal thread grinding machines, worm grinding machines, gauges(ring / plug ) grinding machines, ballscrews, linear guides, screw rototrs, air ends for air compressors,gears,etc.
We are the national standard maker of thread grinding machines in China. Experinced R&D team,well trained techncians and professional sales service team are always ready to provide you the best user's experince in using our products.
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