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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
6" x 18",  8" x 16"    and    10" x 20"
 Manual Precision Surface Grinders
Freeport SGS-816M 8 inch x 16 inch manual surface grinder
Freeport sgs-1020m 10 inch x 20 inch manual surface grinder
SGS-816-M
SGS-1020-M
M models are all manual feeds
MR models have rapid traverse up and down

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-618
M and MR
SGS-816
M and MR
SGS-1020
M and MR
Max. grinding  surface WxL
152 x 457mm
6" x 18"
203 x 406mm
8" x 16"
254 x 508mm
10" x 20"
Working Surface of table.
150 x 457
5.9" x 18 "
160 x 406
6.3" x 16"
230 x 500
9" x 19.7"
Max. Horizontal travel of table.
480mm    18.9"
430mm   16.9"
540mm    21.3"
Max. Cross travel of table.
163mm     6.4"
213mm   8.4"
263mm   10.4"
Distance between table surface and spindle center
460mm  18.1"
500mm  19.7"
Table speed
Manual
Automatic cross feed of saddle
Manual
Vertical handwheel (1  gra)
0.01mm    0.0005"
optionally 0.0001"
0.01mm    0.0005"
Vertical handwheel (1 rev)
2mm     0.1"
optionally  0.05"
2mm   0.1"
Cross feed handwheel (1 gra)
0.02mm    0.001"
0.1mm    0.005"
Cross feed handwheel (1 rev)
0.01mm    0.005"
Down feed micro adjustment (1 gra)
MR    0.001mm     0.00005"
Down feed micro adjustment (1 rev)
MR    0.1mm   0.005"
Longitudinal travel adjustable
Manual
Cross feed travel adjustable
Manual
Spindle motor
2 Hp
2 Hp 
optionally  3 Hp
Hydraulic pump motor
Manual
Cross feed motor
Manual
Down feed motor
MR   1/5 Hp
Grinding wheel OD x T x ID
205 x 13 x 31.75mm
8" x 1/2 " x 1.25"
Spindle speed
3500 RPM
Coolant motor
1/8 Hp
Dust collector motor
1/2 Hp
Net Weight
700 kgs
1,540 lbs
650 kgs
1,340 lbs
1,200 kgs
2,640 lbs
Gross weight
850 kgs
1,870 lbs
800 kgs
1,760 lbs
1,400 kgs
3,080 lbs