SHARP SG-820-2A Automatic Surface Grinder

SHARP SG-820-2A Automatic Surface Grinder

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SHARP 8 x 20 inch Automatic Surface Grinder SG-820-2A

  • The model has hydraulic table feed and motorized cross saddle feed. Besides regular surface grinding it can perform slot grinding.
  • 6” x 18” table, 7" x 21.6" travel, 1.5 HP (SG-618-2A)
  • 8" x 20" table, 9.2" x 23.6" travel,2 HP (SG-820-2A)
  • Ball screw on crossfeed
  • Advanced hydraulic system w/ independent oil tank for vibration free table
  • Slide ways are hand scraped and coated w/ TURCITE
  • Automatic crossfeed
  • Accurate slot-grinding capability
  • Double “V” way cross travel
  • One “V”, one flat way longitudinal travel
  • Honey combed shape ribs design: Honey combed shape ribs design assures long lasting table straightness without any twisting and deformation due to thermal expansion or cutting pressure. Bottom of the grinding table is hand scraped for fitness. One V and one flat ways ensure precise movement of the table.
  • Long lasting accuracy: Casting of the vertical column and the spindle is annealed for long lasting accuracy. Cartridge type spindle unit equipped with high precision preloaded angular contact bearings (ABEC 7) and direct drive motor of V3 vibration class to assure accurate grinding operations.
  • Optional overhead dresser: Optional overhead dresser greatly enhance the process in dressing the wheel. Automatic overhead dresser is also available as an option.         


  • Grinding wheel
  • Kanetsu chuck with coolant system (12 gal) and splash guard
  • Auto-lube system
  • Wheel adapter/flange
  • Wheel balancing arbor
  • Work light
  • Diamond dresser
  • Tool kit
  • Wired 220V or 440V
  • Fully loaded special package available


  • Permanent magnetic chuck (fine pole)
  • Electro-magnetic chuck (fine pole) w/ control
  • Overhead manual parallel dresser
  • Balancing stand
  • Extra wheel adapter (flange)
  • Dust collector
  • Coolant system w/paper filter (25 gal) & magnetic separator, 220V/440V
  • Digital Readout System
  • CE mark

Specifications are subject to change without notice.

NOTE: Data is provided by the manufacturer.



Stock NumberSG-820-2A
Max Grinding Length21.7 in.
Max Grinding width8.7 in.
Max Distance: Table to Spindle Center15.7 in.
Table Size8 x 20 in.
Longitudinal Travel23.6 in.
Cross Travel9.25 in.
LONGITUDINAL FEED OF TABLE: Hand Feed Per Revolution2.7 in.
LONGITUDINAL FEED OF TABLE: Hydraulic Feed3.3-82 ipm
CROSS FEED OF SADDLE: Hand Feed Per Revolution0.2 in.
CROSS FEED OF SADDLE: Hand Wheel Graduation0.0005 in.
CROSS FEED OF SADDLE: Intermittent Feed0.006-0.4 in.
CROSS FEED OF SADDLE: Continuous Traverse Feed47 ipm
VERTICAL FEED OF WHEEL: Hand Feed Per Revolution0.05 in.
VERTICAL FEED OF WHEEL: Hand Wheel Graduation0.0001 in.
GRINDING WHEEL: Outside Diameter8 in.
GRINDING WHEEL: Wheel Bore1.25 in.
GRINDING WHEEL: Wheel Width0.5 in.
MOTORS: Spindle2 HP
MOTORS: Hydraulic Table1 HP
Floor Area (W x H x L)6.91 x 4.91 x 6.5 ft.
Approximate Weight2,600 lbs.
Power Consumption (220V)4KVA/11 amps
Power Consumption (440V)4KVA/5.5 amps