Heald
273A
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3/60/440
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W/hydraulic Unit, Coolant Unit, *contains 3 Pieces 0720-067-0013
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About This Item
Product Overview:
The 273A Universal Internal Grinder has proven itself as the performance standard for single-part to job-lot production. Although bore grinding is the 273A’s primary function, the machine’s designed-in versatility make it a capable machine for external, face, and some rotary surface grinding.
The Machine design incorporates frictionless hydrostatic ways under both the table and cross slide, which ensures smooth, accurate and long lasting operation. This, coupled with the superior dampening characteristics of a cast iron base, offers the ability to produce very close-tolerance, high-quality work.
Overall Capacity of the 273A ranges from the smallest of workpieces, up through workpieces requiring 20” of swing or weighing 1,000 lbs. The table’s 20” of travel allows for 16” of grinding stroke. The wheelhead cross slide travel is 1-1/2”, with automatic feed via the hydraulic feed box of 0.050”. Wheelslide feed increments. The workhead has a total adjustment of 10” to the front and 7-1/2” to the rear.
Product Features:
Variable speed wheelhead drive arrangement, eliminating the need for pulley changes
Workhead angular setting device, for accurate swivel positioning
Facing attachment, for face grinding feed control
Angular truing unit-manually operated
Radius truing unit-manually operated
Wheelheads - straight shank, belt- driven style (new or rebuilt)
Quills for above mentioned wheelheads.
Digital positioning scales.
Fixture operating mechanisms
12″ Extended Base
Red Head Spindle 8200 RPM Air Mist
4 position stop
Dresser
Plunge Cycle
Hydrostatic ways
Cross sliding work head
Sine bar attachment
Coolant Tank & Pump
General:
Manufacturer: Heald
Model Name: Grinder
Model Number/MPN: 273A
Inventory Number: 0720-067-0013
Condition: Good
Power Requirements:
Workhead Speed: 0 to 500 rpm
Frequency: 50/60 Hz
Phase: 3
Specifications:
Aisle: 06A
Bay: 2200
Weight (lb): 7295 lbs.
Swing over table: 24.5 in.
Hole length ground: 16 in.
Max Table Travel: 20 in.
Hole diameter ground: 18 in.
Grinding speed: 0 to 18 fpm
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