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J & W Official Announcemen..
JG850H Series
JG850H Series Vertical Machining Center

The pre-tension precision angular contact ball bearings imported from abroad, offer maximum rigidity and precision of spindle. Main spindle adopt AC servo or inverter unit, so spindle with high rigid and little vibration.
Ballscrew adopt super long high precious C3 grade double nuts preloaded, this ensures high positioning accuracy and reliability
With special guideway seat design, narrow guide distance, wide guide face, supporting on whole travel range, sliding guideways series machining center have the advantages of no overhang, strong load and larger torque cutting, also coated with wearable TURCITE-B fluorin resin plastics, and presious scratch and grind by hand, make axes smoothly motion and machine have unvarying precision.
RENISHAW double frequency laser interferometer is used to test the positioning accuracy and repeatability of machine and ensures high precious pitch compensation and backlash compensation.
Important elements and test pieces cut on the machine are tested by BROWN & SHARPE 3D coordinate measuring machine.
Sliding guideway series machining center have wide guideway and good loading capacity, they are suitable for high rigidity, high precision and high efficiency machining occasions.
Positive-displacement timing and rationing centralization lubrication system is used. This ensures every oil site is lubricated with sufficient oil. Bothe oil low level buzzer and PLC give warning signal reminding the operator of adding lubricant.
Large power, large capacity and high lift coolant pump ensure sufficient cooling and effective chip flushing (optional)






Worktable size  510 x 1050 mm  550 x 1000 mm  550 x 1200 mm   600 x 1300 mm   650 x 1300 mm
T-slot size

 5 x 18 mm

T-slot pitch

 100 mm

 120 mm

 125 mm

Cross travel(X axie)

820 mm 850mm  1000 mm  1000 mm  1100 mm 

Longitudinal travel (Y axie)

510 mm 550 mm  550 mm  600 mm  650 mm 

Vertical travel(Z axie)

650 mm

620 mm 665(650) mm

Distance between column guide and 

spindle center

575 mm 610 mm  610 mm  655 mm  700 mm 

Distance between spindle nose and 


130-780 mm 125-775 mm  100-750 mm  130-750 mm  150-815 mm 

Spindle hole taper



Spindle power

7.5/11 kw

Max. spindle speed

 8000 rpm

8000(6000) rpm

Max. feeding speed

 6000 mm/min

Rapid travel speed(X/Y/Z)

18/18/15 m/min

15/15/12 m/min

Positioning accuracy(X/Y/Z)

±0.016 mm

 ±0.012 mm

Re-positioning accuracy(X/Y/Z)

±0.01 mm

 ±0.008 mm

Max. worktable capacity

700 kg

800 kg

1000 kg

Overall size(L x W x H)

2650 x 2420 x 2600 mm 2700 x 2510 x 3000 mm 3000 x 2510 x 3000 mm 3300 x 2700 x 3000 mm 3300 x 2700 x 3000 mm

Weight of machine

5500 kg 7000 kg 7600 kg 8500 kg 9000 kg

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