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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 10" x 20" & 12" x 24" hydraulic surface grinders
Freeport 10" x 20" hydraulic surface grinder
Freeport 10" x 20" and light 12" x 24"
 automatic surface grinders

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
Key to model identifiers
H = hydraulic long feed
AH = power long and cross feed
AHR = power long and cross and vertical rapid traverse
AHD = power long and cross feeds; vertical rapid traverse and auto incremental downfeed
SD = digital control (CNC)

 
SGS-1020
H / AH / AHR / AHD
SGS-N1224
H / AH / AHR / AHD
max. surface grinding area
254 x 508mm
10" x 20"
304 x 609mm
12" x 24"
working surface of table.
230 x 500mm
9.1" x 19.7"
2600 x 600mm
10.2" x 23.6"
max. horizontal travel of table.
565mm
22.2"
690mm
27.2"
max. cross travel of table.
263mm
10.4"
313mm
12.3"
table surface to spindle center
500mm   19.7"
table speed
5~25 M/min
200~1000 inch/min
automatic cross feed of saddle
0~9mm     0"~0.35"
vertical handwheel per graduation
0.01mm   0.0005"
vertical handwheel per revolution
2mm  (0.1")
cross feed handwheel (1 gra)
0.01   (0.0005")
crossfeed handwheel (1 rev)
4mm  (0.2")
downfeed micro adjustment (1 gra)  
downfeed micro adjustment (1 rev)
AHD   0.2mm     (0.01")
longitudinal travel adjustable from-to
50~508mm  2" x 20"
50~609mm  2" x 24"
cross feed travel adjustable from-to
0~254mm   0"~10"
0~304mm    0"~12"
spindle motor
2 HP   *3 HP
hydraulic pump motor
H/AH 1 HP        AHD/SD  2 HP
cross feed motor
40W
downfeed motor
AHR 1/5    AHD 1/4 HP
grinding wheel (ODxTxID)
205 x 13 x 31.75mm
8" x 0.5" x 1.25"
spindle speed ( variable speed optional)
3500 RPM
coolant motor
1/8 HP
dust collector motor
1/2 HP
net weight
1,350 kgs
2,970 lbs

1,400 kgs
3,080 lbs