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male H.H. Roberts Machinery Limited
1324 Matheson Blvd E., Mississauga, Ontario, Canada. L4W-2Z7, Fax 905-624-9065
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Freeport
SGS-T Series
Twin head double column Surface Grinders
51" x 83"  to  51" x 240"
Freeport T Series two head double column surface grinder
Freeport T-2012 Double Head, Double Column Digital (CNC) Surface Grinder

View a video on the Freeport double column surface grinders. Well produced and in English)
This shows grinding on several different models of the double column machines.  Work shown includes flat thin plates, bases, columns and tables of machining centers, V-bed lathes, boring mill sub-tables etc.
Click on the icon below.
video on Freeport double column grinders

 
SGS-T2012
AHD/PNC
SGS-T3012
AHD/PNC
SGS-T4012
AHD/PNC
SGS-T5012
AHD/PNC
SGS-T6012
AHD/PNC
Maximum grinding surface
1300 x 2100
51.2" x 82.7"
1300 x 3100
51.2" x 122"
1300 x 4100
51.2" x 161.4"
1300 x 5100
51.2" x 200.8"
1300 x 6100
51.2" x 240.2"
Working surface of table
1200 x 2000
47.2" x 78.7"
1200 x 3000
47.2" x 118"
1200 x 4000
47.2" x 157.4"
1200 x 5000
47.2" x 196.9"
1200 x 6000
47.2" x 236.2"
Max. Horizontal travel
2200mm
86.6"
3200mm
126"
4200mm
165.4"
5200mm
204.7"
6200mm
244.1"
Max. Cross travel
1400mm     55.1"
Distance between table
surface and spindle center
1150mm      45.3"
Inclination of universal head
+/- 90°
Table speed
5~25M/min    16 ~ 80 fpm
Automatic cross feed of saddle
0~25mm      0"~1"
Down feed handwheel min scale
0.005mm     0.0002"
Cross feed handwheel (1 div)
AHD 0.02mm     0.001"
PNC-0.005mm    0.0002"
Cross feed handwheel (1 rev)
5mm    0.2"
Longitudinal travel adjustable
150 ~ 2300
5.9" x 90.6"
150 ~ 3300
5.9" x 129.9"
150 ~ 4300
5.9" x 169.3"
150 ~ 5300
5.9" x 208.7"
150 ~ 6300
5.9" x 248"
Cross feed travel adjustable
0 ~ 1400mm     0" ~ 55.1"
Horizontal spindle motor
20 Hp * 30 Hp
Vertical spindle motor
10 Hp * 15 Hp
Hydraulic pump motor
10 Hp
15 Hp
20 Hp
25 Hp
Cross feed motor
AHD      1/4 Hp
PNC 1/2 Hp    AC Servo
Down feed motor
AHD   850W DC SERVO   
PNC       AC SERVO
Horizontal grinding wheel
Standard  510 x 50 x 127mm   20" x 2" x 5" *
Optinal  510 x 75 x 203.2mm    20" x 3" x 8"
Vertical grinding wheel
406 x 50 x 127mm
16" x 2" x 5"
Horizontal spindle speed
1,250 RPM
Vertical spindle speed
1,750 RPM
Flow rate of coolant pump
90 l/min
135 l/min
180 l/min
Max. load capacity addition to
magnetic chuck
3,800 kgs
8,360 lbs
4,800 kgs
10,560 lbs
5,600 kgs
12,320 lbs
7,000 kgs
15,400 lbs
8,400 kgs
18,480 lbs
Net weight
23,000 kgs
50,600 lbs
26,000 kgs
57,200 lbs
29,000 kgs
63,800 lbs
32,000 kgs
70,400 lbs
35,000 kgs
77,000 lbs