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Sharp SG Series Automatic Surface Grinders

SG-618-3A

SG-820-3A w/options
Extended Description
 
SG-618-3A
SG-820-2A
SG-820-3A
Axis Controlled
3 Axis
2 Axis
3 Axis
Table Working Surface
5.9"x18.3"
8"x20"
8"x20"
Max. Table Travel
7"x21.6"
9.25"x23.6"
9.25"x23.6"
Spindle Center to Table
15.7"
15.7"
15.7"
Max. Grinding Length
19.7"
21.7"
21.7"
Max. Grinding Width
5.9"
8.7"
8.7"
Crossfeed Intermittent Feed
0.006" to 0.3" IPM
0.006" to 0.4" IPM
0.006" to 0.4" IPM
Crossfeed Traverse Feed
47.2 IPM
47 IPM
47 IPM
Crossfeed Handwheel
0.0005"/graduation
0.0005"/graduation
0.0005"/graduation
Crossfeed Handwheel
0.2"/revolution
0.2"/revolution
0.2"/revolution
Vertical Feed Rate (automatic)
0.00005" to 0.00495"
-
-
Vertical Rapid Feed
1.1 to 9 IPM
n/a
1.1" to 11.8" IPM
Vertical Handwheel
0.0001"/graduation
0.0001"/graduation
0.0001"/graduation
Vertical Handwheel
0.04"/revolution
0.05"/revolution
0.05"/revolution
Longitudinal Feed
3.3 to 82 FPM
3.3 to 82 FPM
3.3 to 82 FPM
Longitudinal Handwheel
2.7"/revolution
2.7"/revolution
2.7"/revolution
Downfeed Total Stock Removal
0.00005" to 9.99995
n/a
0.00004" to 39.3"
Downfeed Fine Stock Removal
0.00005" to 0.00495"
n/a
0.0004" to 0.0016"
Downfeed Spark Out
0-9 Passes
n/a
0-9 Passes
Grinding Wheel
8" dia. x 0.63" wide x 1.25" ID
8" dia. x 0.5" wide x 1.25" ID
8" dia. x 0.5" wide x 1.25" ID
Grinding Wheel Speed
3,600 RPM
3,420 RPM
3,420 RPM
Spindle Motor
1-1/2 HP
2 HP
2 HP
Hydraulic Motor
1 HP
1 HP
1 HP
Machine Weight
2,200 lbs.
2,540 lbs.
2,640 lbs.
Dimensions
83"x51"x80"
83"x59"x78"
83"x59"x78"
Standard Equipment
Optional Accessories*
  • Grinding Wheel
  • Wheel Adaptor
  • Work Light
  • Balancing Arbor
  • Diamond Dresser
  • Toolkit
  • 10"x3/4" Grinding Wheel (with inverter)
  • Permanent Magnetic Chuck
  • Electro Magnetic Chuck w/ Control
  • Spare Wheel Adaptor
  • Coolant System
  • Dust Collector
Designed for Accuracy, Longevity and Durability
  • One "V" and one flat way for longitudinal travel. Both ways are hand-scraped and covered with Turcite-B coating.
  • Automatic cross feed.
  • Accurate slot grinding achieved using saddle locking system combined with cross feed ball screw.
  • Automatic lubrication system.
  • Advanced hydraulic system with independent oil tank provides vibration-free table movement.
  • Hydraulic table stroke setting.
* Optional Accessory Links are to pages on this site containing the items matching the type of accessory and are our best sellers. The accessories listed on this page can be installed by the Sharp or we can install other brands as well. The links do not necessarily represent the brands that would be installed by Sharp if you choose to have those options installed by the manufacturer.

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