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NC 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.


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.

 


Specifications

CAPACITY
ITEMS
MODLE
JHU-2706
JHU-2710
JHU-2715
JHU-3506
JHU-3510
JHU-3515
Capacity
Max Φ work swings
270 mm
350 mm
Max grinding length
600 mm
1000 mm
1500 mm
600 mm
1000 mm
1500 mm
Max grinding dia.
250 mm
330 mm
(kgs)Max job weight(kgs)
70 kgs
130 kgs
70 kgs
130 kgs
Workhead
Speed range
60Hz 11~500 Variable speed
50Hz 9~420 Variable speed
Swivel angle
120° (90° CCW ; 30° CW)
Center
MT.4
Spindle rotation
Setting, Normal and reverse rotation
Worktable
(mm/min) Horizontal travel speed
50 ~ 4000
50 ~ 3000
50 ~ 3000
50 ~ 3000
Handwheel feed/revolution
20 mm
CCW/CW Swivel angle
11° / 6°
9° / 5°
7° / 4°
11° / 6°
9° / 5°
7° / 4°
Min travel
8 mm
Wheel head
Grinding wheel size (Dia X Width X Bore)
405 x 25 ~ 50 x 152.4
(m/min) Max peripheral
2000
Grinding wheel speed (2 step)
60 Hz 405:1499:1600(Standard)
50 Hz 405:1508:1603(Standard)
Total front and rear travel
Grinding wheel 405:175
Grinding wheel 405:192
Speedy feed travel
40 mm
Wheelhead total feed travel
Grinding wheel 405:135
Grinding wheel 405:152
Grinding Wheel Feed
Handwheel feed/revolution
1 mm
Tail stock
Center travel
30 mm
Center
MT.4
Motor
Grinding wheel motor
3.7KW, (5HP), 4P
Worktable motor
0.4KW, (1/2HP), 4p-100H, 150H
Hydraulic motor
1.5KW, (2HP), 4P
Compulsory lubrication motor
0.2KW, (1/4HP), 4P
Coolant motor
0.2KW, (1/4HP), 4P
Magnetic separator motor
0.03KW, (1/25HP), 4P
Internal grinding motor
1.5KW, (2HP), 2P
X Servo motor
1 KW
Y Servo motor
1.5 KW
Hydraulic
system
Hydraulic tank
60L
Compulsory lubrication tank
22L
Coolant tank
100L
G. Weight
(kgs) (Approx.)
3150
4100
5150
3350
4300
5350
Packing
Size
(mm) (Approx.)
2800
3400
4400
2800
3400
4400
(mm) (Approx.)
1650
1650
1650
1650
1650
1650
(mm) (Approx.)
1820
1820
1820
1820
1820
1820
* Manufacturer reserves the right to change specification without prior notice.

CAPACITY
ITEMS
MODLE
S40
M60
M85
L85
L100
Working
capacity
Max. swing oven table. mm
Φ 400
Φ 600
Φ 850
Φ 850
Φ 100
Max. distance between c.c. M
1.5
2
3
3
4
5
3
4
5
Max. weight of workpiece in centers. kg
800
15000
18000
Max. weight of workpiece in neck rests. kg
1500
4000
6000
Max. O.D. ground. mm
Φ400
Φ600
Φ850 ~ Φ600
Rang of grinding dia. mm
Φ5-400
Φ10-600
Φ10-850
Φ20-850
Φ10-1000
Max. dia of crown. mm
By program
Wheelhead
&
Carriage
(X axis)
Wheel size (O.D.xWidthxBore) mm
Φ500 x Φ152.4 x Φ50
Φ760 x Φ304.8 x Φ50
Type of lubricating system -
Hydrostatic & dynamic system
Rotating speed of wheel R.P.M
100-1800
300-1200
Max. cross feed rate mm/min
1000
2000
Cross feed per pulse mm/p
0.0001
Table
(Z axis)
Travel of table or head (Z axis) mm
Center Distance+200
Travel speed of table mm/min
25-3000 25-6000
Type of lubricating system -
Hydrostatic & dynamic system
Neck rests
Roll neck diameter range mm
Φ30-Φ120
Φ50-Φ250
Workhead
&
Talstock
Rotaion speed of work heed R.P.M
10-150
10-100
Size of center -
MT#5
MT#6
Moving speed of tailstock mm/min
Manual
Stroke of quill mm
50
80
Power
rating
Grind wheel motor HP
15
30
40
Workhead motor HP
3
7.5
10
Table traverse motor (Z axis) NM
12
22
30
Tailstock move motor NM
8
12
Cross feed motor (X axis) HP
2HP/220Liter
2HP/320Liter
2HP/450Liter
G. Weight
(kgs) (Approx.)
8290
8580
9780
11200
12800
14400
11800
13400
15000
Packing
Size
(mm) (Approx.)
6500
7500
9500
10795
12795
14795
11800
13800
15800
(mm) (Approx.)
2280
2280
2280
2280
2280
2280
2280
2280
2280
(mm) (Approx.)
1500
1500
1500
1650
1650
1650
1650
1650
1650


Standard Accessories

A. Tools and Tool box B. Grinding wheel and grinding wheel flange C. Wheel Dressser
 
D. 2-point center rest (1m, 1.5m) E. Water pump and tank  


Optional Accessories

A. Magnetic Separator B. Balancing Arbor C. Balancing Base
D. 3-jaw Chuck E. 3-Point Center Rest Assembly(Big) F. 3-Point Center Rest Assembly(Small)
 
G. High Speed Spindle (8,000~20,000rpm) H.Center Ring and Jaw Plate(6", 7")