HEALD Model 74 Internal Grinder, used condition. Features 36 swing, 20 max grinding bore, 7 stroke, 13 long travel, 60 workhead swivel, 3 workhead power, 7.5 wheel power. Includes dresser. Perfect for precision grinding needs.
| Swing | 36" | 914.4 mm |
| Max Grinding Bore | 20" | 508 mm |
| Stroke | 7" | 177.8 mm |
| Travel-Long | 13" | 330.2 mm |
| Workhead Swivel | 60 | 60 |
| Workhead Power | 3 hp | 2.2 kW |
| Wheel Power | 7.5 hp | 5.6 kW |
| Workhead Speed | 123 RPM | 123 RPM |
| Dresser | Yes | Yes |
74 HEALD INTERNAL GRINDER
S/N 5349
STANDARD SPECIFICATIONS
CAPACITIES:
Swing over table (straight work)........................ 36"
Maximum diameter of hole that can be ground............. 20"
Grinding stroke......................................... 7"
Taper swivel on work head.......................... 60° inc. angle
Center of chuck spindle from floor...................... 50"
Diameter of work head spindle flange.................... 12"
Hole through work head spindle.......................... 1 11/16"
Total table travel...................................... 13"
SPEEDS AND FEEDS
Table speeds unlimited between............... 0 to 18 ft. per min
Work head speeds adjustable from............. a-c 41-62-82-123 RPM
Cross feed dial graduation represents................... .001"
Power feed adjustment........................ 1 to 6 teeth
Each ratchet tooth with coarse gears (standard)......... .0002"
Each ratchet tooth with fine gears (optional)........... .000128"
DRIVES
Pump motor............................... 2 HP, ac - 1200 RPM
Work head motor..1-1 1/2"-2-3 Tapered HP, ac-600-900-1200-1800 RPM
Wheel head motor......................... 7 1/2 HP, ac-3600 RPM
EQUIPMENT AND FEATURES
All trip dogs.
Cam facing stop.
Cross sliding work head.
Manual or hydraulic table.
All pick feeds.
30” O.D. magnetic chuck.
Single point dresser.
Bijur Lube.
4 Speed work head.
Specifications are deemed accurate, however, subject to verification or prior sale.
