Saddle type surface grinder
Three axis servo driven precision rotary surface grinder, rotary disc grinding, high workpiece accuracy.
Three axis servo driven precision rotary surface grinder, rotary disc grinding, high workpiece accuracy.
Main feature /
■ Accuracy
Table surface guaranty(Testing grinding piece*6, thickness difference) : 2μ
Downfeed(minimum unit) : 1μ
■ Spindle & motor
Vertical driven by AC servo motor.
3HP V3 grade low virbration spindle motor
Direct drive spindle, ABEC Class 7 (P4) bearings, 0.003m/m TIR.
1 roller bearing and 2 angular contact ball bearings at front, 2 angular contact ball bearings at rear side of spindle. (YRG-03)
2 angular contact ball bearings at front, 2 angular contact ball bearings at rear side of spindle. (YRG-04)
■ Cross and Rotary table
Z axis and rotary table are driven by servo motor.
Rotary table with constant peripheral velocity.
■ Base & slide ways
Z axis double V and longitudinal V& flat, and TURCITE B coated with hand scraped, 3 axes are box ways.
One-piece casting base and slide way.
All main casting are made of "Meehanite GC275" and have been annealed stress for long lasting and accuracy.
Technical data
| DESCRIPTION \ MODEL | Unit | YRG-03 | YRG-04 | ||
| CAPACITY | Rotary table diameter | mm | Ф300 | Ф400 | |
Maximum distance from table top to spindle center line | mm | 210 | 280 | ||
| Maximum Cross (Z axis) travel | mm | 235 | 285 | ||
| Table rotating speed | rpm | 20-200 | 15-200 | ||
Auto down feed setting (one/two side feed) | mm | 0.001-0.999 | 0.001-0.999 | ||
| Maximum grinding diameter | mm | Ф350 | Ф450 | ||
| SPINDLE&WHEEL | Spindle motor | HP/P | 3 | 3/4 | |
| Spindle speed(50/60HZ) | rpm | 2860/3460 | 1430/1735 | ||
| Grinding wheel OD xTx B(50HZ) | mm | 中205x13x31.75 | 中355x32x127 | ||
| Grinding wheel OD x Tx B(60HZ) | mm | Ф180x13xФ31.76 | 中305x32xФ127 | ||
| MOTOR | Rotary table servo motor | W | 900 | 400 | |
| Vertical servo motor | W | 300 | 300 | ||
| Cross servo motor | W | 400 | 400 | ||
| FEED | VERTICAL (Y AXIS) | ||||
| Vertical rapid feed 100% | mm/min | 300 | 240 | ||
| Verticala slow feed 10% | mm/min | 30 | 24 | ||
| MPG | Per revolution(X1,10X100) | mm | 0.1/1/10 | 0.1/1/10 | |
| Per graduation(X1X10X100) | mm | 0.001/0.01/0.1 | 0.001/0.01/0.1 | ||
| CROSS (Z AXIS) | |||||
| Cross rapid feed 100% | mm/min | 1200 | 1200 | ||
| Cross slow feed 10% | mm/min | 120 | 120 | ||
| MPG | Per revolution(X1,X10,X100) | mm | 0.1/1/10 | 0.1/1/10 | |
| Per graduation(X1X10,X100) | mm | 0.001/0.01/0.1 | 0.001/0.01/0.1 | ||
| DIMENSION&WEIGHT | Floor space(LxWxH) | mm | 2100x1500x2130 | 2270x1700x2130 | |
| Packing dimensions(LxWxH) | mm | 1700x1910x2260 | 2370x2220x2230 | ||
| Machine weight(Approx.) | kg | 1247 | 1800 | ||
Remark：We reserve the right to modify the specification relating to any of the above machines without notice.