72" Extended Bridge, 16" Swing, 20" Swing Inside Guards, 9" Magnetic Chuck
| Swing | 20" | 508 mm |
| Max Grinding Bore | 8.5" | 215.9 mm |
| Travel-Long | 30.25" | 768.35 mm |
| Workhead Swivel | 60 degrees | 60 degrees |
| Workhead Power | 1.8 hp | 1.3 kW |
| Wheel Power | 5 hp | 3.7 kW |
| Workhead Speed | 1,800 RPM | 1,800 RPM |
| Dresser | Yes | Yes |
| Dimensions | 117 x 36 x 140 x 36 | 117 x 36 x 140 x 36 |
| Weight | 11000 lbs | 11000 lbs |
276 HEALD 72" EXTENDED BRIDGE INTERNAL GRINDER
S/N G3382 Year: 1971
STANDARD CATALOG SPECIFICATIONS
CAPACITIES
Swing inside guards........................... 20" dia.
Swing over swivel plate........................16” dia.
Hole length................................... 12" max.
Hole diameter (Maximum)....................... 8 1/2", 5 1/2"
Hole diameter (Minimum)....................... 1/8"
Taper (included angle) Bridge swivel........ 30 degrees
.............................................. 17 degrees
Taper (included angle) Work head swivel..... 60 degrees
Center of work head spindle from floor........ 48"
Work head spindle flange...................... 9 5/8"
Table travel.................................. 30 1/4"
Wheel head cross slide swivel to rear......... 4 degrees
SPEEDS & FEEDS
Table speed, rapid traverse................... 30 FPM
Table speed, grinding......................... 0 20 FPM
Work head speeds.............................. 400/266/200/133
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 cross feed (adjustable).............. .0001" to .0005"
Finishing cross feed (non adjustable)......... .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 1/4 HP
......................................... 1800, 1200, 900, 600 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.......... 117" x 36" x 140" x 36"
Weight of machine (net, approx.)......... 11,000 lbs.
EQUIPMENT & FEATURES
Red Head grinding spindle.
9” Magnetic chuck.
Single point diamond dresser.
Face stop.
12” 3-Jaw chuck.
2-Axis Sony DRO.
Specifications are deemed accurate, however, subject to verification or prior sale.
All exchange units/returns must be shipped within 30 days. All exchange units/returns must be shipped using DDP terms - Grinders Clearing House, Inc. dba GCH Machinery, is not responsible for any customs formalities or shipping costs.
If Grinders Clearing House, Inc. dba GCH Machinery does not receive exchange/core unit back within 30 days, GCH will invoice FULL replacement cost (OUTRIGHT Cost) to customer.
