Heald 172 PLAIN ADJUSTABLE GAP INTERNAL GRINDER

HEALD MODEL #172 PLAIN ADJUSTABLE GAP INTERNAL GRINDER


Swing inside standard coolant guard................ 36"
Maximum diameter of hole that can be ground........ 14"
Maximum grinding stroke, depending on nature of work. 13"
Gap adjustment (standard)..................... 6 1/4" to 13 1/2"
Gap adjustment with special bridge................. 12" ‑ 20"
(Taper is depending upon nature of work)
Center of chuck spindle from floor................. 45"
Diameter of workhead spindle flange................ 12"
Hole through workhead spindle...................... 1 11/16"

SPEEDS & FEEDS
Table speeds unlimited between..................... 0 to 18 FPM
Workhead speeds adj. from...... 60 cy‑ac‑70‑105‑140‑210 RPM
Cross feed dial graduation represents dia. of work. .001"
Power feed adjustment.............................. 1 to 6 Teeth
Each ratchet tooth w/coarse gears... (std)......... .002"
Each ratchet tooth w/fine gears..... (optional).... .000138"

DRIVE
Pump drive motor......................... 2 HP, AC‑1200 RPM
Workhead motor: 1 1/2‑2‑3 Tapered HP, AC 600‑900‑1200‑1800 RPM
Wheelhead motor.......................... 5 HP, AC‑3600 RPM
Coolant pump motor....................... 1/4 HP, AC‑1800 RPM

GENERAL DATA
Capacity of oil reservoir..................... 35 Gallons
Capacity of coolant tank...................... 50 Gallons
Length & width of base on floor............... 115" x 36 1/2"
Floor space (total) without coolant tank...... 144" x 60"
Floor space (total) with coolant tank......... 144" x 66"
Weight of machine (net) 3 motor drive......... 12,540 lbs.

EQUIPMENT & FEATURES
8,200 RPM Red Head grinding spindle
36" T‑Slotted face plate
Manual single point diamond dresser
Manual or power table
4 Speed workhead
Motorized cross sliding workhead
Positive stop
All trip dogs