Heald 271 PLAIN INTERNAL GRINDER

HEALD 271 PLAIN INTERNAL GRINDER
Year: 1952

STANDARD CATALOG SPECIFICATIONS
Swing over table (straight work). 22" dia.
Swing inside of standard coolant guard.. 12" dia.
Maximum length of hole that can be ground. 8"
Minimum diameter of hole that can be ground. 1/8” – max 5”
Maximum included angle of taper. 60 degrees
Center of chuck spindle from floor. 43 1/2"
Diameter of workhead spindle flange 9 5/8"
Table travel 16"
Wheelhead cross slide swivel to rear (max). 4 degrees

SPEEDS & FEEDS
Table speed, rapid traverse.. 35 FPM
Table speed, grinding. 0‑20 FPM
Workhead speeds. 590, 866, 1185, 1785 RPM
One turn of cross feed handwheel. .050" on dia.
Roughing cross feed (adjustable) .0001"‑.00005" on dia.
Finishing cross feed (non‑adjustable) .0001" on dia.
One turn of table handwheel.. .963" Table travel

DRIVE
Hydraulic pump motor, 60 cycle a‑c. 2 HP, 1800 RPM
Workhead motor, 60 cycle a‑c. 1 1/2‑1‑3/4‑1/2 HP
1800, 1200, 900, 600 RPM
Wheelhead motor, 60 cycle a‑c.. 1/2 HP, 1800 RPM

GENERAL DATA
Capacity of oil tank. 15 gallons
Capacity of standard coolant tank. 55 gallons
Length & width of base on floor. 66" x 28"
Floor space w/or without coolant tank 91" x 74"
Net weight of machine (approximate).. 7,600 lbs.

EQUIPMENT & FEATURES
Standard workhead flange type
Manual & power table
4 Speed workhead
Red Head spindle
Barrel stop
Coolant tank & pump