282 HEALD INTERNAL ROLL TYPE CENTERLESS GRINDER
S/N 31669 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.
EQUIPMENT & FEATURES
Sizematic feed box for controlling work size by maintaining a constant relationship between diamond and wheel contact.
Hydraulic dresser with diamond holder.
Table reversal dogs.
EQUIPPED WITH
Centerless work head with all rolls.
Manual loading.
Specifications are deemed accurate, however, subject to verification or prior sale.
