261 HEALD HORIZONTAL SPINDLE, VERTICAL COLUMN TYPE
ROTARY SURFACE GRINDER
S/N 31763 Year: 1952
STANDARD CATALOG SPECIFICATIONS:
CAPACITIES:
Chuck face diameter.............................................................. 19"
Chuck magnetic diameter…….............................................. 16" fork pattern
Swing inside of coolant pan, maximum……......................... 18 1/2"
Wheel size............................................................................. 14"x 1.5"x 5"
Minimum wheel diameter......................................................... 9"
Distance from top of chuck to center of grinding wheel:
Maximum........................................................................... 17 1/2"
Minimum.......................................................................…... 4 1/2"
Maximum angle:
Convex........................................................................….. 17 degrees
Concave.....................................................................….. 10 degrees
Table travel (Not grinding stroke)............................................ 12"
Grinding stroke (Dependent on nature of work)....................... 8"
Vertical distance..................................................................... 10.5" approx.
SPEEDS & FEEDS:
Chuck speeds, unlimited between........................................... 50 225 RPM
Wheel speeds, approximate.............................................….... 1640 RPM
Table speeds, for grinding...................................................….... 0 12 FPM
Table speeds, for run out...................................................……. 35 FPM
One turn of feed hand wheel..................................................... .050"
Each graduation of feed dial...................................................... .001"
Power feed adjustment.................................................……... .0001" .0005"
(In increments of .0001")
DRIVE
Main drive motor, 60 cycles a c................................................ 15 HP 1750 RPM
Coolant pump motor, 60 cycles a c......................................... 1/2 HP 1800 RPM
GENERAL DATA:
Capacity of oil reservoir machine.......................................... 15 gallons
Capacity of coolant tank........................................................... 45 gallons
Floor space with coolant tank................................................... 77" x 83"
Weight of machine, net............................................................. 8,350 lbs.
Gross weight crated, approximate............................................ 9,350 lbs.
EQUIPMENT & FEATURES
Single point diamond dresser.
All proper guarding.
16" Magnetic chuck with controls.
Variable chuck speeds.
Specifications are deemed accurate, however, subject to verification or prior sale.
