Heald 282

282 HEALD INTERNAL ROLL TYPE CENTERLESS GRINDER
Year: 1952



STANDARD CATALOG SPECIFICATIONS
Maximum outside diameter of work.................. 8"
Maximum length of hole that can be ground......... 4"
Minimum diameter of hole that can be ground....... 1/8"
Maximum included angle of taper
(Sizematic only).................................. 60 degrees
Center of wheel spindle from floor................ 47 1/2"
Regulating roll (std)............................. 10" dia.
(Can be ground down to 8 3/4" diameter)
Pressure & supporting rolls (std)................. 3" dia.
(Can be ground down to 2 1/2" diameter)

SPEEDS & FEEDS
Table speed, rapid traverse...................... 35 FPM
Table speed, for grinding........................ 0 - 20 FPM
Table travel..................................... 10"
One turn of crossfeed handwheel.................. .060" on dia.
Wheel wear compensation.......................... 0 - .004 on dia.
Maximum power crossfeed.......................... .042" on dia.

DRIVE
Main drive motor, 60 cycles a-c.................. 2 HP, 1800 RPM
Wheelhead motor, 60 cycles a-c................ 7 1/2 HP, 3600 RPM
Regulating roll motor w/speed reducer,
60 cycles a-c.................................... 1/2 HP, 3600 RPM
Coolant pump motor, 60 cycles a-c................ 1/2 HP, 1800 RPM
Motors manufactured by Westinghouse w/Square D Electrics
Hydraulic pump manufactured by Vickers

GENERAL DATA
Capacity of oil tank.............................. 15 gallons
Length of width of base on floor.............. 66 1/4" x 28 1/8"
Floor space....................................... 88" x 77"
Net weight of machine (approximate)............... 8,100 lbs.