8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]
8" x 20" Okamoto Reciprocation Table Surface Grinder, Model 820N, Power Feed 3-axis, Incremental Down Feed, DRO, Serial Number 2101 [G8025-10502]

8″ x 20″ Okamoto Model 820N Reciprocating Table Surface Grinder with 3-Axis Power Feed – Incremental Down Feed & DRO, Serial Number 2101, Inventory Reference G8025-10502

Model Number: 820N

Serial Number: 2101

Reference No: Surface Grinder, Reciprocating Tablre & G8025-10502

Condition: used

Mfg Date:

Model Number 820N

Serial Number 2101

Reference Number Surface Grinder, Reciprocating Tablre & G8025-10502

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Description

OKAMOTO SURFACE GRINDER
   Model 820N   Type Reciprocating Table   Serial Number 2101

SPECIFICATIONS
CHUCK: Walker Electro-Magnetic
   Size 8" W x 20" L (203.2 x 508mm)
CAPACITY TABLE: (1) T-Slot
   Working Surface Pad length 9½" (749.3mm)
   Longitudinal Movement of Table Infinitely Variable thru
           25.59" (649.99mm)
   Transverse (Cross) Movement 9.05"  (229.87mm)
   Longitudinal movement per Revolution by: Hand 1.85"
           Hydraulic (Automatic) 1-83 FPM           
   Cross (Transverse) movement 9.05" by: Hand Feed Per
           Revolution 0.2" to 0.47" (5.08 x 11.94mm)
   Continuous Cross Feed Per Minute 4 – 40 IPM  (101.6 – 1,016 m/mm)
   Maximum distance under 8" diameter wheel to 
          Table Surface 15.6"  (396.24mm)
GRINDING WHEEL: standard,  8"diameter x 1" face x 1¼"bore
                                        (203.2 x 25.4 x 31/75mm)
GRINDING WHEEL ASSEMBLY: Movement by Hand and 
           Automatic with Incremental Downfeed.
   Automatic Down Feed Per Table Stroke (OPT) 0.0001 - .0015"
   Automatic Downfeed per Table Reversal 0.0001 – 0.0015" 
   Graduation of handwheel 0.002"
   Vertical Fine Feed (Manual): 0.0001" to 0.0015"
           Hand feed per Revolution 0.00001"
   Vertical Rapid Feed 19 IPM  (482.6m/mm)
MOTOR DRIVES: Machine Wired 460 volts
   Spindle 3 hp (2.2 kw) 230/460 volts
   Hydraulic Pump 0.054hp (.04 kw) 230/460 volts
   Down Feed 1.5 hp (1.1 kw) 230/460 volts
   Coolant Pump ¼ H.P. 230/460 volts
CONTROLS: Wheel Start Button.
   Hydraulic Pump Start Buttons.
   Emergency Stop Button.
   Auto Down Feed Switch.
   Cross Feed Direction Switch.
   Rapid Feed Up / Down Buttons.
   Coolant On / Off Switch
   Table Feed Switch. Table Stop Button.
   EMERGENCY STOP Button.
CONTROLS ON GRINDER:
   Table Speed Adjustment.
   Cross Feed Control.
   Step Feed Control.
   Magnetic Chuck Control
EQUIPPED WITH: 
   1- Grinding Wheel Hubs.
   Stone Dresser (Built on) w/ Manual adjustment down,
       cross movement handle.
   1- Diamond Nib for dresser.
   DRO Sony two Axis for Vertical Wheel Assembly &
       Table Knee Cross Feed.
   Walker Magnetic Chuck Control.
   Automatic Lubrication.  Coolant Pump. Splash Guards
COMPLETE FACTORY SAFETY GUARDS

Floor Space 84½" R-L x 58" F-B  x 72" Height
         (2,146.3 R-L x 1,473.2 F-B x 1,828.8mm Ht.)
Approximate weight 3,500 lbs.

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