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EGA-38 Series CNC

Angular Type Cylindrical Grinder

Angular Type Grinding Cycle

1. Plunge grinding
2. Traverse grinding
Both sides feed
LHS feed
RHS feed
3. Plunge
Both sides feed
LHS feed
RHS feed
4. OD +End Face Grinding

Machine Design Feature

Specification
  EGA-2550
Grinding Capacity Swing over table mm Ø250
Distance between centers mm 500
Max. grinding daimeter mm Ø230
Max. grinding length - dresser on workhead side mm 350
Max. grinding length - dresser on tailstock side (Opt.) mm 500
Max. load held between center kg 80
Center distance between spindle and slide table mm 130
GrindingWheel Infeed angle deg 60*
Diameter x Width x Bore mm  Ø455x50xØ127 (5")
Motor rated power /  max. torque Kw/Nm 3.75kw / 13Nm 
Wheel speed rpm 1400
Workhead Swiveling angle deg 90
Spindle speed (infinite variable) rpm 10~600
Motor rated power /  max. torque kw 0.75
Center taper - MT3
Spindle type - Fixed or Rotary
Diameter of bore mm Ø20
Tailstock Quill travel mm 25
Cente taper - MT3
 X Axis Travel mm 200
Max. rapid feedrate m/min 6
Heidenhain linear scale resolution um 0.05
Min. increment mm 0.0001
Servo motor rated power kw 1.2(F)/1.5(M)
Z Axis Travel mm 750
Swiveling angle deg ±7
Max. rapid feedrate m/min 8
Min. increment mm 0.0001
Servo motor rated power kw 1.2(F)/1.5(M)
Motor Hydraulic pump kw 0.38
Hydrodynamic grinding wheel spindle lubrication pump kw 0.2
Guide way lubrication pump kw 0.2
Coolant pump kw 0.2
Machine Net Weight (semi-enclosed splash guard) kg 3100
Gross Weight kg 3500
Standard accessories
Infinite variable workhead w/servo motor
Diamond Dresser and Stand
Automatic wheel speed change (15 steps)
Carbide tip center
X Axis Heidenhain linear scale (resolution 0.05 um)
Levelling bolts and blocks
Operation manual and part lists
Fanuc CNC Controller (Oi TF)
Grinding Wheel + Wheel Flange
Standard oil cooler (cooling fan)
Standard coolant tank 140L
MPG handwheel 2 Axes control
Touch probe (for EGA series only)
LED working light
Tools and Tool Box
Electricity cabinet w/ heat exchanger
Semi-enclosed splash guard
Wheel Extractor
4-color indication signal light
Electrical wiring diagram
Optional accessories
FANUC 0i-TF iGrind program
Mitsubishi controller (M80) iGrind program
Electrical cabinet air conditioner
Interanl grinding attachment (for EGP series only)
Workhead upgrade to MT5 (not suitable for 25 series)
Tailstock upgrade to MT5 (not suitable for 25 series)
Roller type balancing stand/ arbor
Automatic 3-jaw hydraulic chuck
CE standard electrical cabinet
Touch probe
Workpiece carrier
Full-enclosed splash guard
Workpiece supporting seat, 2pc / set
2 Point Steady Rest
3-point steady rest
3-jaw scroll chuck
4-jaw scroll chuck
BS VM25 Integration system (OD gauging+ crash & gap control + dynamic balance system)
BS VM15 Integration system (OD gauging+ crash & gap control)
Hydraulic tailstock (w/ foot pedal)
Z Axis Heidenhain linear scale (resolution 0.05 um)
Manual grinding wheel balance system (vibrator)
Grinding wheel dynamic balance system
Wheel spindle lubrication oil cooler
Transformer
Gap & crash control device
Safety door lock
Workhead spindle adjustment arbor
Auto gauging device
Coolant system with magnetic separator
Coolant system with paper filter
Oil & mist collecting system
Spare grinding wheel flange
Full-Carbide center tip
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.

Work Head

NN bearing design work spindle offers heavy duty load bearing capability and optimal rotation accuracy and high rigidity. The servo motor drive offers steady speed and torque during the grinding operation. A positive air purge system keeps grinding swarf and coolant out of the work head prolonging its life.

Rigid Machine Base

The machine based is designed to insure the table is fully supported on both ends. A Meehanite casting and box rib design also insure the stability and rigidity of the machine.

Wheel Head (Contact bearing Type/Babbitt Bearing Type)

Contact bearing type spindle (optional) is easy to maintain and environmental friendly and small temperature rise. Babbit bearing type spindle applies SNCM220 super alloy steel with multiple heat treatments makes the surface hardness of spindle up to HRC 60 degree. These features ensure the fast cutting capability and best roughness performance in grinding operation.

X-axis

The hand scraped Double V guideways provide maximum support to the wheel head for maximum stability and grinding capacity. This design insures the greatest accuracy over the life of the machine.

Tail Stock

A coolant nozzle is installed on the top of the tailstock for cooling the center tip. An air floating devise allows for smoother movement and protection of the table. The quill is oil-bathed to ensure smooth movement. An optional taper adjustment tailstock that allows the operator to easily adjust for taper error is available as an option.