- / Features /
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The wheel spindle is supported by 20kg/cm2 high pressure oil at axial and radial direction. This design eliminates contact-friction between metals without the need to replace parts. Outstanding features of the spindle include high rigidity, high accuracy, long service life, minimum vibration and low heat growth, etc. 
Work Head - Maximum Rigidity! High precision!
The cartridge spindle is supported by 8 P4-class angular contact ball bearings and roller bearings at front and rear end. This assures outstanding machining stability and makes the machine ideal for heavy duty machining. FANUC servo motor drive. The spindle provides centering and synchronized motion functions. Fast interchange between center and chuck. The work head permits 90° counter-clockwise swiveling and 30° clockwise, making the machine suitable for various grinding modes.
HYDRAULIC TAILSTOCK
The sleeve movement is hydraulically operated for convenient workpiece loading and unloading. With foot pedal to control workpiece clamping and unclamping. Workpiece clamping and unclamping force can be adjusted by burning a knob. The sleeve is precision machined from hardened alloy, featuring maximum wear resistance and rigidity.
ONE-PIECE FABRICATED BASE
Deformation-free The machine base is one-piece manufactured from Meehanite cast iron, tempered for maximum stability of material. Box type base construction features superior stability and rigidity. The base permits fast coolant exhaust, preventing thermal deformation from influencing machine accuracy.
WHEELHEAD FEEDING SADDLE
Equipped with 0.0005mm Linear Scale for Feedback Control The wheelhead moves on double "V" slideways. Top slideway surfaces are coated with Turcite-B and precision scraped. Equipped with high resolution 0.0005mm linear scale for close-loop feedback.
HYDRAULIC PRESSURE SENSOR
The pressure switch provides pressure sensing function. The spindle can't start until lubrication oil pressure reaches the setting value. In case hydraulic system is abnormal, spindle runnign stops. When setting pressure, fast response can be achieved in case pressure error is within 5kg.
HIGH PRESSURE OIL SYSTEM
The high pressure oil system includes high pressure filter can, accumulator, pressure switch, check valve and throttle valve. Pressure can be adjusted in axial and radial direction. In case power failure occurs, the accumulator may keep pressure for 5 minutes.
AUTOMATIC LUBRICATION SYSTEM
All moving and running parts are lubricated by automatic lubrication system. The lubrication system is separately mounted from the machine to avoid mounted from the machine to avoid vibration and facilitate heat dissipation. - / Specifications /
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ITEM CNC PLUNGE CNC ANGULAR JHP-3506CNC JHP-4006CNC JHP-3510CNC JHP-4010CNC JHA-3505CNC JHA-4005CNC JHA-3508CNC JHA-4008CNC Capacity Max. work swing Ø350mm Ø400mm Ø350mm Ø400mm Ø350mm Ø400mm Ø350mm Ø400mm Max. grinding length 620 mm 1020 mm 520 mm 820 mm Max. grinding dia. Ø330mm Ø380mm Ø330mm Ø380mm Ø330mm Ø380mm Ø330mm Ø380mm Max. job weight 150kg 150kg Distance between centers 600 mm 1000 mm 600 mm 1000 mm Center height 175 mm 200 mm 175 mm 200 mm 175 mm 200 mm 175 mm 200 mm Grinding wheel Grinding wheel sizes Ø510x50 ~ 100xØ203.2 Ø600x50 ~ 100xØ203.2 Grinding wheel speed 1250 rpm 1250 rpm Max. peripheral speed 33 m/sec 33 m/sec Wheel head Feed angle 90° 60° Swivel angle ±0° ±0° ±0° ±0° Rapid traverse speed 6 m/min 6 m/min Max. travel 280 mm 280 mm Min. setting unit 0.001 mm 0.001 mm Grinding feed rate 0.001 ~ 6000 mm/min 0.001 ~ 6000 mm/min Hydrostatic pressure 20 kg 20 kg Tailstock Retraction of sleeve 30 mm 30 mm Sleeve diameter D: 70 mm D: 70 mm Center taper NO#4 (Opt. NO.#5) NO#4 (Opt. NO.#5) Hydraulic cylinder pressure 20 kg 20 kg Wrok head Spindle speed (variable) 10 ~ 500 rpm/min 10 ~ 500 rpm/min Center taper NO#4 (Opt. NO.#5) NO#4 (Opt. NO.#5) Spindle type Short type Short type Swivel angle 120 (90CCW ; 30CW) 120 (90CCW ; 30CW) Work table Swivel angle (C.W.) +9 +7 +9 +7 Swivel angle (C.C.W.) -5 -4 -5 -4 Rapid traverse speed 10 mm/min 10 mm/min Min. setting unit 0.001 mm 0.001 mm Max. travel 700 mm 1100 mm 600 mm 900 mm Grinding feed rate 0.001 ~ 6000 mm/min 0.001 ~ 6000 mm/min Motor Grinding wheel spindle 7.5HP 4P (Opt. 10HP 4P) 10HP 4P (Opt. 15HP 4P) Work head 1.5KW 1.5KW Work table feeding (Z-axis) 1.8 KW 1.8 KW Wheel table feeding (X-axis) 1.8 KW 1.8 KW Hydraulic pump 1HP 4P 1HP 4P Wheel head pump 2HP 4P 2HP 4P Coolant pump 1/4HP 2P 1/4HP 2P Magnetic coolant separator 1/25HP 2P 1/25HP 2P Oil cooler 1HP 2P 1HP 2P Oil tank Hyd. Oil tank (slideways, screw ends & measurement) 60L 60L Wheel head lubrication 50L 50L Coolant tank 160L 160L Machine N.W. Fully enclosed 7460kg 8080kg 7460kg 8080kg Semi enclosed 6840kg 7800kg 6840kg 7800kg G.W. Fully enclosed 7860kg 8480kg 7860kg 8480kg Semi enclosed 7240kg 8200kg 7240kg 8200kg Machine dimensions (LxWxH) Fully enclosed 4110x2100x2000 4900x2100x2000 4110x2100x2000 4900x2100x2000 Semi enclosed 3300x2100x1850 4200x2100x1850 3300x2100x1850 4200x2100x1850 Packing dimensions (LxWxH) Fully enclosed 4290x2200x2200 5090x2200x2200 4290x2200x2200 5090x2200x2200 Semi enclosed 3480x2200x2100 4380x2200x2100 3480x2200x2100 4380x2200x2100 - / Standard Accessories /
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A. CNC control
B. X-axis linear scale
C. Hydraulic tailstock with manual movement
D. Grinding wheel and flange
E. Tungsten carbide tipped centers
F. Automatic lubrication system
G. High pressure oil system
H. Diamond dresser/dressing device (for JHA series)
I. Diamond dresser/dressing device (for JHP series)
J. Coolant tank and pump
K. Leveling bolts and blocks
L. Wheel lifting tool (for electric hoist)
M. Tool kits and toolbox.
N. Magnetic coolant separator
O. Touch probe gauge - / Optional Accessories /
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A. 2-point steady rest
B. 3-point steady rest
C. Paper filter
D. SBS wheel balancing system
E. Marposs auto in-process gauge:8-90mm
F. Marposs cursh control device (gap control)
G. Marposs thickness measuring gauge: 8-90mm
H. Center ring and drive plate
I. Work holder
J. Wheel dressing device (lower table)
K. Wheel lifting tool
L. Wheel balancing stand
M. Wheel balancing arbor
N. Fully endosed splash guard & Oil mist device
O. Oil cooler
P. 6"/8" 3-jaw scroll chuck
Q. Dressing device (tailstock)
