261 HEALD HORIZONTAL SPINDLE, VERTICAL COLUMN TYPE
ROTARY SURFACE GRINDER
S/N 30784 Year: 1951
STANDARD CATALOG SPECIFICATIONS
CAPACITIES
Chuck face diameter............................. 17.5"
Chuck magnetic diameter......................... 16"
Swing inside of coolant pan, maximum............ 18 1/2"
Wheel size...................................... 14" x 1 1/2" 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 (manual).
All proper guarding.
Coolant pump and tank.
16 Fork pattern chuck.
Plain feed box.
Separate hydraulics.
Neutrofier variable chuck controls.
Specifications are deemed accurate, however, subject to verification or prior sale.
