Heald N0. 72A Universal Internal Grinding Machine

11-18 spindle regularly furnished grinds holes.............. 2 3/8" dia. and larger x 11" long, also 3" dia. and larger x 18" long
7 1/2" spindle grinds holes................................. 1 1/8" dia. and larger by 7 5/8" long
10" spindle grinds holes.................................... 2 3/8" dia. and larger by 10" long
15" spindle grinds holes.................................... 3" dia. and larger by 15" long
18" spindle grinds holes.................................... 3" dia. and larger by 18" long
Standard grinding wheels for 11"-18" spindle................ 2 3/4" and 3 1/2" dia.
Speed of above wheels....................................... 4950-4500 surface feet per minute
Vertical adjustment of knee................................. 2 1/2"
Traverse adjustment of cross slide table.................... 28"
Total table travel with dogs................................ 28 1/4"
Main table.................................................. 55 3/4" long x 16 1/2" wide
Finished top with two T slots............................... 24" long x 13" wide
Cross slide table........................................... 44 1/2" long x 12 3/4" wide
Finished top with two T slots............................... 38" long x 12 3/4" wide
Greatest and least distance of finished pad on cross slide
table below center of grinding circle....................... 9 1/2" and 7"
Greatest and least distance to top of main table with cross
slide removed............................................... 14" and 11 1/2"
Wheel eccentric speed....................................... 48 - 92 RPM
Main table feed............................................. 11.64" and 20.07" per min.
Tight and loose pulleys..................................... 10" dia. x 4 1/2" face - speed 700 rpm
Motor....................................................... 7 1/2 HP - 1150 ROM
Approx. Floorspace required................................. 87 3/4" x 109 3/4"
Approx. Weight.............................................. 4700 lbs

Equipped With:
(4) Red Head Spindles
Magnetic Chuck
3-Jaw Chuck
4-Jaw Chuck
(2) Face Plates
Over a Dozen Quills
Countless Grinding Wheels
Coolant Tank / Pump