Advanced Search


Supertec 8″ x 20″ CNC Cylindrical Grinder with Fanuc Series O-GC Control, G20P-50


Shipping: Add to Cart to Calculate

In stock

Make Offer

Inventory #: 7046





Product Description

SuperTec 8″ x 20″ CNC Cylindrical Grinder w/ Fanuc Series O-GC Control

Inventory # 7046-P

Model: G20P-50 CNC

S/n: GC10004 “2004”



Swing over table: Ø 8″

Distance between centers: 20″

Max. grinding diameter: Ø  7″

Max. load held between centers: 176 lbs.

Grinding Wheel:

Diameter x width x bore: Ø 14″ x 1″

Wheel speed: 1,940 rpm

Max. peripheral speed: 1,800 M / min.


Sliding angle degree: 90°

Max. increment speed: Ø 6 M / min. (236)

Infeed travel: 6″

Min. increment infeed: Ø .00040″


Spindle speed: 50 – 500 rpm (variable)

Center taper: #3 MT

Spindle Type: Fixed & Rotary

Diameter of bore: 0.79″


Quill travel: 1″

Center taper: #3 MT


Rapid feedrate: 0 – 315″ / min.

Min. increment feed: 0.000040″

Swiveling angle C.C.W.: 7°

Motor: 5 hp / 230v / 3 ph

Work head motor: 1/2 hp

Hydraulic pump: 1 hp

Lubrication pump: 1/4 hp

Coolant pump: 1/8 hp


Machine Base:

The heavily ribbed box-type base is made of Meehanite casting, providing excellent rigidity to ensure machine stability. Optimum distance between the guideways offers excellent table support to increase Z axis positioning accuracy and repeatability.

Work Head:

The sturdy rigid-designed workhead equipped with precision bearings is electronically controlled giving variable spindle speeds. Workhead swivels 90°counterclockwise to 30°clockwise for various grinding operations. A combination live and dead-type spindle allows for quick changeover from center to chuck operation or vice versa. A dual oil seal and cover prevent coolant seepage into the workhead.


The design of the tailstock is both rigid and robust. Housed in a Meehanite case body, the hardened nitralloy steel sleeve is designed to carry a MT3 center for G20P/G25P. Movement of the sleeve is adjusted by a knob to give a light or heavy load. An optional hydraulic tailstock with foot pedal is available for easy loading and unloading of parts.

Wheel Spindle:

Cartridge type wheel spindle is equipped with four super precision angular contact class 7 (ABEC) bearings ensure high accuracy.


Both the double V and flat guideways are hand scraped and Turcite coated, and utilize an automatic lubrication system, precision ballscrew, AC servo motor and a 0.001mm (0.000020″) linear feedback system. This combination allows for a smooth movement of the wheelhead which delivers a longer way life with superior positioning accuracy and repeatability. The enlarged and properly sloped drainage troughs under the wheelhead base help to control thermal growth and provides the rapid coolant drainage needed during heavy grinding cycles.

Work Table:

The rigid table with box-type construction travels on a cushion of oil with no metal to metal contact. An automatic lubrication system operates continuously to ensure smooth movement and consistent accuracy. Z-axis positioning accuracy and repeatability is assured with an AC servo motor and high precision, pre-tensioned ballscrews. A swiveling table dial indicator enables rapid cylindrical corrections and taper grinding applications. The table is fully supported over the full travel to avoid any overhang.

Automatic Lubrication System:

Slideways, ballscrews and spindle are continuously lubricated by an auto-lube system to ensure long service life and maintain maximum accuracy. Hydraulics coolant and lubrication systems are separated from machine to eliminate vibration and dissipate heat.

Equipment Included:

Fanuc Series O-GC Control

Marposs Gauge

Coolant System

Hydraulic unit

Work light

Mechanical Specifications:

Overall Dimensions: 96″ L x 80″ W x 74″ H

Overall Weight: approx. 6,160 lbs.

New Replacement Cost: $98,690.00

Price: $42,500.00

FOB Our Baltimore, MD Warehouse

Additional Information

Weight6160 lbs

Can't Find What You Need? Give Us a Call: 1-800-394-4399