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EGM/EGI series

CNC precision Complex ID & OD Grinder

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

Machine Design Feature

iGrind Operation

High speed box type dressing.
With EGM high speed box type dressing function, it drastically reduces the wheel dressing time.
This function allows the operator to input the specifications of the dresser and the geometric data of the profile to create the optimal dressing path.

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Grinding Sample
Specification
  EGI-150 CNC EGM-350 CNC EGM-350L CNC EGM-450 CNC
General capacity Max. grinding ID mm φ200 φ400 φ400 φ400
Max. grinding OD mm φ300 φ400 φ330 φ400
Swing over workhead mm φ500 φ500 φ340 φ500
Max. grinding depth mm 200 260 280 260
Max. weight of workpiece kg 50 50 300 (w/ steady rest) 50
Max. length of workpiece mm 200 300 750 300
Type of workhead Single feeding wheelhead Dual indenpendent wheelhead Dual indenpendent wheelhead Dual indenpendent wheelhead
Workhead 3-Jaw chuck   Hydraculic - 8"/10"(opt.) Hydraculic - 8"/10"(opt.) Manual- 8"/10"(opt.) Hydraculic - 8"/10"(opt.)
Swiveling angle range deg +15°~ -5° +15°~ -5° +15°~ -5° +15°~ -5°
Manual travel distance (toward Z axis) mm 250 250 550 250
Spindle speed rpm 0~1000 (Variable speed) 0~1000(Variable speed) 0~1000(Variable speed) 0~1000 (Variable speed)
Servo motor rated power kw 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M)
Spindlehead(Y axis) OD grinding wheel size mm N/A  N/A   N/A φ405x50xφ127
ID grinding wheel size mm N/A  φ100 φ100 N/A 
Max. spindle speed rpm N/A  10000 (std.)  10000 (std.) 1300 (std.)
Spindle motor/ max. torque Kw/Nm N/A 3.75Kw / 13Nm 3.75Kw / 13Nm 3.75Kw /  26Nm
Wheelhead(Z axis) OD grinding wheel size mm   N/A φ100 φ100  N/A
ID grinding wheel size mm φ100 N/A N/A φ100
End-Surface grinding spindle (Opt.Z2)  mm φ80(CBN) N/A N/A N/A
Max. spindle speed rpm 20,000 (std.) 20000 (std.) 20000 (std.) 20,000 (std.)
Spindle motor/ max. torque Kw/Nm 3.75Kw /  13Nm 3.75Kw / 13Nm 3.75Kw / 13Nm 3.75Kw /  13Nm
X axis Travel mm 400 420 420 450
Rapid feedrate m/min 8 8 8 8
Heidenhain linear scale resolution um 0.05 0.05 0.05 0.05
Min. increment mm 0.0001 0.0001 0.0001 0.0001
Servo motor rated power Kw 1.8(F)/2.2(M) 1.8(F)/2.2(M) 2.5(F)/3.0 (M) 1.8(F)/2.2(M)
Y axis Travel mm N/A  350 350 350
Rapid feedrate m/min N/A  8 8 8
Min. increment mm N/A  0.0001 0.0001 0.0001
Servo motor rated power Kw N/A  1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M)
Z axis Travel mm 350 350 350 350
Rapid feedrate m/min 8 8 8 8
Min. increment mm 0.0001 0.0001 0.0001 0.0001
Servo motor rated power kw 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M) 1.8(F)/2.2(M)
Motor Hydraulic motor Kw 0.75 0.75 0.75 0.75
Coolant pump Kw 0.37+0.18 0.37+0.18 0.37+0.18 0.37+0.18
Macine Net weight  kg 5000 5800 6800 6300
Gross weight kg 5500 6300 7300 6800
Packing size (L x W x H) mm 3350x2250x1950 3350x2250x1950 4000X2250X1950 3350x2250x1950
Standard accessories
Control system: Mitsubishi M80 or FANUC Oi-TF with 10.4” screen
Workhead spindle A2-5
MPG handwheel: EGI 2 Axes, EGM 3 Axes control
Full-enclosed splash guard
Standard coolant tank 140L
Automatic lubrication system
Wheel spindle surface detecting & crash control system (current indicator)
LED working light
X Axis Heidenhain linear scale (resolution 0.05 um)
4-color indication signal light
Three-direction dresser stand x 1 set, diamond dresser x 3 pcs
Levelling bolts and blocks
Hydraulic 8" 3-jaw chuck (w/ solid roary cylinder)
Tools & tool box
Electrical wiring diagram
Electricity cabinet w/ heat exchanger
Operation manual & part lists
Grease type grinding wheel spindle: (Select 2 pc from 8,000~50,000RPM)
Electrical lubricator
Optional accessories
Manual strong type 7" 3-jaw chuck
Oil & mist collecting system
Spindle oil mist lubrication system
ID auto. gauging device
Coolant system with magnetic separator
Coolant system with paper filter
Coolant system with magnetic separator & paper filter
Diamond roller dressing device
Dressing sensor system
Workhead spindle A2-6 (65mm thru-hole)
Soft-Jaw turning assembly
B axis linear scale w/ digital readout
Safety door lock
Mitsubishi controller (M80) iGrind program
Mitsubishi controller (M80) dressing program: Radius / Taper / Multiple step / form shape
CE standard electrical cabinet
Electrical cabinet air conditioner
Grease type grinding wheel spindle
Oil mist type grinding wheel spindle
EGM350 series CNC control systems are available for MITSUBISHI or FANUC control. It also can operate with graphic conversational programming as optional accessory. With this option, the operator don’t need to use G / M code to edit the programs. Therefore, it is easy to learn and use for grinding operation even for beginners.
EGM350 series CNC control systems are available for MITSUBISHI or FANUC control. It also can operate with graphic conversational programming as optional accessory. With this option, the operator don’t need to use G / M code to edit the programs. Therefore, it is easy to learn and use for grinding operation even for beginners.
EGM350 series CNC control systems are available for MITSUBISHI or FANUC control. It also can operate with graphic conversational programming as optional accessory. With this option, the operator don’t need to use G / M code to edit the programs. Therefore, it is easy to learn and use for grinding operation even for beginners.
Complete one piece cartridge spindle can avoid the eccentricity of spindle housing and reduces the heat increase for spindle longevity.
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.
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/W axes for high dynamic rigidity and better loading capacity. This can increase the grinding accuracies drastically.
C1 grade precision ball screw with high efficiency, high rigidity, large leading pitch is used for high accuracy and longevity.
Low-gravity base structure, with slant bed design for easy and smooth coolant draining and grinding chip removal.