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> #820DX okamoto 8" x 20" hydraulic surface grinder ('90)
#820DX okamoto 8" x 20" hydraulic surface grinder ('90)
For Sale: #820DX okamoto 8" x 20" hydraulic surface grinder ('90)
Subject #820DX okamoto 8" x 20" hydraulic surface grinder ('90)
Ad is submitted by poster:
Preowned 8" x 20" OKAMOTO Hydraulic Surface Grinder, Model 820DX, S/N 62115 (New 1990)
Maximum grinding length x width
Minimum/Maximum distance from underside of
8" diameter grinding wheel to top of table
Maximum weight of workpiece on table (inclusive of
Longitudinal movement of table, hydraulic
Longitudinal movement of table, hand
Longitudinal movement of saddle, hand
Vertical Movement of Wheelhead:
Automatic feed per stroke of table
Automatic feed per reversal of saddle
8" diameter x 1.25" bore x 1" width
Hydraulically actuated longitudinal and cross feeds
Servo driven automatic incremental down feed of grinding wheelhead in programmable
coarse and fine increments from 0.00005" to 0.0015" in both the plunge and surface
grinding modes of operation
Automatic cycle with sparkout timer from 0 to 5 passes with optional automatic table
stop at the right end of its setting stroke at the completion of grinding cycle
Electronic handwheel for manual vertical movement with each graduation equivalent to
Digital display of both saddle position and of vertical axis position
Motorized power rapid traverse to grinding wheelhead
8" x 20" O.S. WALKER fine division electromagnetic chuck with variable hold control
Cartridge type grinidng wheel spindle with super precision, pre-loaded ball bearings
Cross feed handwheel with precision ball screw to assure accurate positioning capability
1/2 H.P. 3/60/230-460 volt vertical feed motor (AC Servo)
1 H.P. 3/60/230-460 volt hyraulic pump motor
2 H.P. 3/60/230-460 volt spindle drive motor and electrical controls
Machine is wired for 460 volt operation.
(F.O.B. Truck, Hauppauge - Long Island, NY)
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Posted By: Tanya Boyer
Contact: tboyer@repair--parts.com (Tanya Boyer) (this is a temporary forwarding address).
