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CNC Universal Cylindrical Grinder
PRECISION, RIGID SPINDLE
The grinding wheel spindle is supported by two special hydrodynamic bearings on the ends with five-point support, providing maximum rigidity and stability of spindle running. In case insufficient lubrication oil occurs, the spindle stops automatically to avoid wearing on the spindle and bearings.
SPECIAL VIBRATION ABSORBING DESIGN
The forced lubrication system of the grinding wheel spindle features vibration absorbing function. The oil film pressure, created by the hydrodynamic bearings, automatically absorbs vibration according to the current working condition.
Feeding mode
- Manual grinding feeding
- Z-axis Hydraulic movement/ Manual movement
A COMPETITIVE EDGE FOR FLEXIBLE GRINDING
- The workhead can swivel 120°, variable spindle speed.
- The spindle can be fixed and runs reversibly, making it ideal for flexible grinding operations for internal and external cylindrical grinding applications.
One-piece fabricated base
- 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.
Hydraulic tailstock(CNC)
- The sleeve movement is hydraulically operated for convenient workpiece loading and unloading. Workpiece clamping and unloading force can be adjusted by turning a knob. The sleeve is precision machined from hardened alloy, featuring maximum wear resistance and rigidity.
Universal /NC cylindrical grinding example
Taper grinding between two centers
Hold on taper grinding
Straight plunge grinding
Universal /NC /CNC cylindrical grinding example
Hold on horizontal grinding
Horizontal grinding between two centers
Universal cylindrical grinding example
Internal grinding
Internal taper grinding
CNC cylindrical wheel dressing cycles
Forming wheel with curve
Straight grinding wheel
CNC cylindrical grinding example
Curve & end face plunge grinding
Tapered traverse grinding
| CAPACITY | ITEMS | MODLE | ||||||||
| JHU-2706CNC | JHU-2710CNC | JHU-2715CNC | JHU-2720CNC | JHU-3506CNC | JHU-3510CNC | JHU-3515CNC | JHU-3520CNC | |||
| Capacity | Max Ø work swings(mm) | 270 | 350 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Max grinding length(mm) | 600 | 1000 | 1500 | 2000 | 600 | 1000 | 1500 | 2000 | ||
| Max grinding dia.(mm) | 250 | 330 | ||||||||
| Max job weight in centers | 70 kgs | 130 kgs | 70 kgs | 130 kgs | ||||||
| Range of touch probe | 500 | 900 | 1400 | 1900 | 500 | 900 | 1400 | 1900 | ||
| Workhead | Speed range(rpm) | 60Hz | 11~500 (Variable speed) | |||||||
| 50Hz | 9~420 (Variable speed) | |||||||||
| Swivel angle | 120° (CCW:90° ; CW:30°) | |||||||||
| Center | MT.4 | |||||||||
| Spindle rotation | Setting, Normal and reverse rotation | |||||||||
| Worktable | Swivel angle CCW/CW | 11° / 6° | 9° / 5° | 7° / 4° | 5° / 3° | 11° / 6° | 9° / 5° | 7° / 4° | 5° / 3° | |
| Max.feed ratc | 8 mm | |||||||||
| Min. setting unit (mm) | 0.001 mm | |||||||||
| Wheel head | Grinding wheel size (D x W x B) | 405 x (25 ~ 50) x 152.4, 455 x 50x152.4(opt.) | ||||||||
| Max peripheral (m/min) | 2000 | |||||||||
| Grinding wheel speed (2 step)(rpm) | 60 Hz | 1499:1600(Standard) 1508:1603(Standard) |
||||||||
| 50 Hz | ||||||||||
| Max. feed rate | 6 m/min | |||||||||
| Max.stroke | Grinding wheel 175mm | |||||||||
| Min. setting unit | 0.001 mm | |||||||||
| Tail stock | Center travel | 30 mm | ||||||||
| Center | MT4 | |||||||||
| Motor | Grinding wheel motor | 3.75KW, 5HP, 4P, 7.5HP(opt.) | ||||||||
| Worktable motor | 1.8KW | |||||||||
| Hydraulic motor | 0.75KW, (1HP), 4P | |||||||||
| Compulsory lubrication motor | 0.75KW, (1HP), 4P | |||||||||
| Coolant motor | 0.2KW, (1/4HP), 2P | |||||||||
| Magnetic separator motor | 0.03KW, (1/25HP), 4P | |||||||||
| Servo motor(X) | 1.2 KW | |||||||||
| Servo motor(Y) | 1.8 KW | 1.8 KW | 2.5 KW | 2.5 KW | 1.8 KW | 1.8 KW | 2.5 KW | 2.5 KW | ||
| Hydraulic system |
Hydraulic tank | 60L | ||||||||
| Compulsory lubrication tank | 30L | |||||||||
| Coolant tank | 100L | |||||||||
| General Specification | Machine N.W. (Full cover) | 4250 | 5370 | 6500 | 7400 | 4350 | 5470 | 6600 | 7500 | |
| Machine G.W. (Approx. kgs) | 4850 | 6000 | 7400 | 8400 | 4950 | 6100 | 7500 | 8500 | ||
| Machine size (Approx) | L(mm) | 3740 | 4700 | 6400 | 6800 | 3740 | 4700 | 6400 | 6800 | |
| W(mm) | 2160 | 2160 | 2160 | 2160 | 2160 | 2160 | 2160 | 2160 | ||
| H(mm) | 2310 | 2310 | 2310 | 2310 | 2310 | 2310 | 2310 | 2310 | ||
| Packing size (Approx) | L(mm) | 4000 | 5000 | 6600 | 7000 | 4000 | 5000 | 6600 | 7000 | |
| W(mm) | 2280 | 2280 | 2280 | 2280 | 2280 | 2280 | 2280 | 2280 | ||
| H(mm) | 2300 | 2300 | 2300 | 2300 | 2300 | 2300 | 2300 | 2300 | ||
| * Manufacturer reserves the right to change specification without prior notice. | ||||||||||
