Cincinnati, Heald #3EF-750, multi-surface internal grinder, 2-spdl., 30"/13" swing, 26" table travel, 10 HP, 3000 RPM, 1986

1986 CINCINNATI/HEALD 3EF-750 internal grinder with dual spindles. Max swing: 30 in, swivel: 13 in. Allen Bradley 9 Series controls. Motors: Work head 4.5 HP, Wheel head 10 HP. Includes air mist spindles, rotary dresser.
3EF-750 CINCINNATI/HEALD CINTERNAL 2 SPINDLE
MULTI-SURFACE INTERNAL GRINDER
S/N 913527P86-0103 Year: 1986
STANDARD SPECIFICATIONS
Capacities
Maximum swing in guard……………………………………… 30"
Maximum swing 45 deg. swivel………………………………. 13"
Work head angular adjustment………………………………… 0-60
Work slide travel (X-direction)……………………………….. 11"
Longitudinal bridge adjustment (Z-direction)…………………. 8"
Maximum table travel………………………………………….. 26"
Grinding stroke – maximum…………………………………… 22"
- minimum……….…………………………… 0
Wheel slide travel……………………………………………… 14"
Wheel head mounting position span…………………………… 10-5/8" – 14-5/8"
Front wheel head adjustment (longitudinal)…………………… 4"
Front wheel head swivel………………………………………. +5, -15
Rear wheel head swivel……………………………………….. +5, -10
Wheel head spindle flange to wheel slide – maximum……….. 39"
- minimum…………. 0
Work head load capacity……………………………………….. 1000 lbs.
……………………………………….. CG 6" from flange
Accuracies
Axes resolution…………..………………………………… .000025"
Work head rotation…………………………………………. .000030"
Speeds & Feeds
Axes speeds – grinding - maximum……………………..… 99.9 IPM
- minimum…………………..……. 0
Rapid axes speed…………………………………………… 400 IPM
Feed rates…………………………………………………… 0 to .999 IPM
…............................................................................ maximum incr. -1001 IPM
Axes feed resolution………………………………………… .000025"
Work head speeds (reversible & variable)…………………. 30 – 999 (1 IPM incr.)
Drives
Axis drive motors (PWM)…………………………………. 6 ft/lb. (8.13Nm)
…………………………………. Torque .4 HP (3kw) @ 2000 RPM
Work head motor…………………………………….. 4 1/2 HP (3.4 kw) @ 4500 RPM
Wheel head motor…………………………………… 10 HP (7.5 kw) @ 3000 RPM
Hydraulic pump motor………………………………. 2 HP (1.5kw) @1800 RPM
General
Allen Bradley 9 Series controls.
(2) Air Mist internal spindles.
3 Jaw air chuck with adjustable jaws.
Rotary and single point dresser with hydraulic lift.
Oil tank capacity…………………………………………… 10 gal.
Base, length & width………………………………………. 99" x 52"
Required floor space, width & depth……………………… 121" x 193"
Overall machine height from floor………………………… 60"
Overall electric cab. height from floor…………………….. 72"
Machine weight……………………………………………. 16,950 lbs.
Specifications are deemed accurate, however, subject to verification or prior sale.

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