| Chuck Size | 20" | 508 mm |
| Horz/Vert | Vert | Vert |
| Power | 15 hp | 11.2 kW |
| Swing | 24" | 609.6 mm |
| Under Wheel | 12" | 304.8 mm |
| Grinding Wheel Width | 1" | 25.4 mm |
| Grinding Wheel Dia. | 11" | 279.4 mm |
| Dimensions | 78” L x 58” W x 105” H | 78” L x 58” W x 105” H |
| Weight | 8000 Lbs. | 8000 Lbs. |
Reference #: GMT-1487
Model # : 11-20
Serial # : 11051 / HOFFHACKER #1084-4020
Year of Manufacture: Nov 1963’ / Rebuilt by HOFFHACKER Approx 1993’
Table diameter: 20”
Maximum swing inside splash guards: 20-1/2”
Maximum work height under grinding wheel: 11"
(4) Geared table speeds: 15, 24, 41, 64 R.P.M.
Wheel speed: 1,200 R.P.M.
Wheel diameter: 12"
Power downfeed range of grinding wheelhead variable from: .10 mm – 1.20 mm
Maximum unbalanced work load on table: 500 Lbs.
Approximate remaining chuck life: 7/16”
Head Tilting: -55 – 0 Degrees / 0- +25 Degrees
Tilting Wheel Head for Parabolic Grinding
Wet Base design
Extended Column
20" Diameter electromagnetic chuck with NEUTROFIER II control
Motorized power rapid traverse to grinding wheelhead (vertical downfeed of wheelhead by hand or power)
Diamond grinding wheel
BIJUR lubrication system
Self-contained coolant system with machine splash guards
“MISTBUSTER” Varispeed
(2) Extra Diamond grinding wheels
(3) Leveling pads
(2) Wrenches
¼ H.P. 3/60/230 Volt coolant motor
1/2 H.P. 3/60/230 volt wheelhead rapid traverse motor
1 H.P. 3/60/230 volt table drive motor
15 H.P. 3/60/230 volt spindle drive motor with electrical controls and load meter
Machine is wired for 230 volt operation.
We use cookies to improve your experience. Privacy Policy.
We use different type of cookies to optimize your experience on our website. You may choose which type of cookies to allow and can change your preferences at any time. Remember that disabling cookies may affect your experience on the website. You can learn more about how we cookies by visiting our Privacy Policy.
These cookies are necessary to the core functionality our website and some of its features, such as access to secure areas.
These cookies are used to enhance the performance and functionality of our website but are nonessential. However, without these cookies, certain functionality may become unavailable.
These cookies gather information to help us understand site usage, measure marketing effectiveness, and personalize your experience.
These cookies enhance ad relevance, prevent repeat ads, ensure proper display, and sometimes tailor ads to your interests.
