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Feature
The spindle head design places the center of gravity at the rear portion to help balancing the whole spindle mechanism to increase spindle accuracy and loading capacity.
Spindle driven by servo motor offers optimum speed and torque performance.
Complete one piece cartridge spindle can avoid the eccentricity of spindle housing and reduces the heat increase for spindle longevity.
X axis lower slide design offers easy adjustment of the workhead for grinding parts with different lengths.
Machine incorporates roller type linear guide ways for X/Z/Y axes for high dynamic rigidity and better loading capacity. This drastically increases the grinding accuracy.
C1 grade precision ball screw with large leading pitch is used to achieve high accuracy.
Low-gravity base structure, with slant bed design for better coolant draining and grinding swarf removal.
Grinding Example
Standard grinding cycles and multi-steps graphic
Inner through
2 Step straight hole
Inner through hole + outer end-face
Inner blind hole + Inner end-face
Inner taper
Inner blind hole + ID chamer
Inner radius groovin
Inner through hole + Inner radius
Multi-step grinding
Profile grinding
Form grinding
Specification
| Model | EGM-350 CNC | EGM-350L CNC | EGM-450 CNC |
|---|---|---|---|
| General capacity | |||
| Max. grinding ID | φ15.7″ | φ11.8″ | φ15.7″ |
| Max. grinding OD | φ15.7″ | φ12.9″ | φ15.7″ |
| Swing over workheads | φ19.6″ | φ13.3″ | φ16.1″ |
| Max. grinding depth | 10.2″ | 10.2″ | 10.2″ |
| Max. weight of workpiece | 110 Lbs. | 661 (w/ steady rest) Lbs. | 110 Lbs. |
| Max. length of workpiece | 11.8″ | 29.5″ | 11.8″ |
| Type of workhead | Dual indenpendent wheelhead | Dual indenpendent wheelhead | Dual indenpendent wheelhead |
| Workhead (X Axis) | |||
| 3-Jaw chuck | Hydraculic – 8″/10″(opt.) | Manual – 8″/10″(opt.) | Hydraculic – 8″/10″(opt.) |
| Swiveling angle range | +15°~ -5° | +15°~ -5° | +15°~ -5° |
| Manual travel distance (toward Z axis) | 9.8″ | 21.6″ | 9.8″ |
| Spindle speed (infinite variable) | 0~1000 (Variable speed) rpm | 0~1000 (Variable speed) rpm | 0~1000 (Variable speed) rpm |
| Servo motor rated power | 1.8(F)/2.2(M) kw | 1.8(F)/2.2(M) kw | 1.8(F)/2.2(M) kw |
| Grinding weelhead(Y axis) | |||
| OD grinding wheel size | N/A | N/A | φ16″x2″xφ5″ |
| ID grinding wheel size | φ3.9″ | φ3.9″ | N/A |
| Max. spindle speed | 10,000 (std.) rpm | 10,000 (std.) rpm | 10,000 (std.) rpm |
| Spindle motor/ max. torque | 3.75Kw / 13Nm | 3.75Kw / 13Nm | 3.75Kw / 26Nm |
| Grinding Wheelhead (Z axis) | |||
| OD grinding wheel size | φ3.9″ | φ3.9″ | N/A |
| ID grinding wheel size | N/A | N/A | φ3.9″ |
| End-Surface grinding spindle (Opt.Z2) | N/A | N/A | N/A |
| Max. spindle speed | 20,000 (std.) rpm | 20,000 (std.) rpm | 20,000 (std.) rpm |
| Spindle motor/ max. torque | 3.75Kw / 13Nm | 3.75Kw / 13Nm | 3.75Kw / 13Nm |
| X axis | |||
| Travel | 16.5″ | 16.5″ | 17.7″ |
| Rapid feedrate | 314″ In/min | 314″ In/min | 314″ In/min |
| Heidenhain linear scale resolution | 0.000002″ | 0.000002″ | 0.000002″ |
| Min. increment | 0.000010″ | 0.000010″ | 0.000010″ |
| Servo motor rated power | 1.8(F)/2.2(M) Kw | 2.5(F)/3.0(M) Kw | 1.8(F)/2.2(M) Kw |
| Y axis | |||
| Travel | 13.7″ | 13.7″ | 13.7″ |
| Rapid feedrate | 314″ In/min | 314″ In/min | 314″ In/min |
| Min. increment | 0.000010″ | 0.000010″ | 0.000010″ |
| Servo motor rated power | 1.8(F)/2.2(M) Kw | 1.8(F)/2.2(M) Kw | 1.8(F)/2.2(M) Kw |
| Z axis | |||
| Travel | 13.7″ | 13.7″ | 13.7″ |
| Rapid feedrate | 314″ In/min | 314″ In/min | 314″ In/min |
| Min. increment | 0.000010″ | 0.000010″ | 0.000010″ |
| Servo motor rated power | 1.8(F)/2.2(M) Kw | 1.8(F)/2.2(M) Kw | 1.8(F)/2.2(M) Kw |
| Motor | |||
| Hydraulic motor | 0.75 Kw | 0.75 Kw | 0.75 Kw |
| Coolant pump | 0.37+0.18 Kw | 0.37+0.18 Kw | 0.37+0.18 Kw |
| Machine | |||
| Net weight | 12786 Lbs. | 14990 Lbs. | 13890 Lbs. |
| Gross weight | 13890 Lbs. | 16100 Lbs. | 14990 Lbs. |
| Packing size (L x W x H) | 132″x88″x77″ | 159″x88″x77″ | 132″x88″x77″ |
Accessories
