Heald 275

HEALD 275 EXTENDED BRIDGE INTERNAL GRINDER
Year: 1978



STANDARD CATALOG SPECIFICATIONS
Swing over swivel plate, diameter............ 16" dia.
Swing over bed............................... 26"
Swing inside guard........................... 14"
Hole length, maximum......................... 5""
Hole diameter, maximum....................... 5 1/2"
Hole diameter, minimum....................... 1/8"
Taper (included angle) bridge swivel......... 30 degrees
Taper (included angle) work head swivel...... 60 degrees
Center of work head spindle from floor....... 49 1/2"
Table travel................................. 16"
Wheel head cross slide swivel to rear........ 4 degrees

SPEEDS & FEEDS
Table speed, rapid traverse.................. 35 FPM
Table speed, grinding........................ 0 to 20 FPM
Work head speeds (4)................... 570, 875, 1150, 1750
One turn of cross feed hand wheel...... .050", .060" on dia.
Wheel wear compensation, manual.............. 0 to .004"
Power cross feed....................... .038", .042" on dia.
Roughing feed, adjustment.............. .0001" to .0005"
Finishing feed, nonadjustable................ .0001 on dia.
One turn of table hand wheel................. .963"

DRIVE
Hydraulic pump motor..................... 2 HP, 1800 RPM
Work head motor.......................... 1 1/2 1 3/4 1/2 HP
440 Volts.......................... 570, 875, 1150, 1750 RPM
Wheel head motor......................... 5 HP, 3600 RPM
Coolant pump motor....................... 1/2 HP, 1800 RPM

GENERAL DATA
Capacity of oil tank.......................... 15 gallons
Capacity of coolant tank...................... 55 gallons
Length & width of base on floor............... 105" x 36"
128" x 36"
Floor space with or without coolant tank...... 126" x 74"
149" x 74"
Net weight of machine......................... 10500 lb.
Gross weight of machine....................... 12000 lb.

EQUIPMENT & FEATURES
48" Extended bridge.
All trip dogs.
Face stop.
Single point dresser.