Column Type

GT Column Surface

Surface Grinder

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Feature

FEATURES AND CONSTRUCTION

Both V-ways of the table are precision ground and hand scraped, they are lubricated by hydrostatic lubrication system for smoother movement and longer machine life. The table moves in the longitude axes only while the machines column moves in the cross feed axes. The table is fully supported by the base casting even when at either end position.

All of the major cast iron components such as the base, table, column, wheel head and saddle are honey comb ribbed and are annealed to relieve stress improving the machine performance and life expectancy.

The vertical travel of the wheel head is driven by a precision ground ball screw and A.C Servo Motor with encoder. The slide ways are lubricated by an automatic lube system to insure smooth movements.

Easy setting of the cross travel, for automatic cross feed is on the control panel setting distance and reversal points viz the push buttons on the control panel.

POWERFUL PLC TOUCH SCREEN CONTROL

A precision ballscrew, and A.C. servo motor with encoder, coupled with the PLC touch screen control allows the operator a wide range of grinding programs and control features. Grinding cycles include: Surface, Plunge, and Crisscross modes.

A color touch screen is easy to read and simple to operate. Both rough and fine feed rates can be set on the touch screen. The wheelhead can be jogged up or down with use of two push button switches.

Specification

Model GT-3248 GT-3260 GT-3280 GT-32100 GT-32120
Table clamping surface W 32 inch 32 inch 32 inch 32 inch 32 inch
Table clamping surface L 56 inch 65 inch 84 inch 104 inch 124 inch
Maximum longitudinal travel - - - - -
Maximum cross travel 33.86 inch 33.86 inch 33.86 inch 33.86 inch 33.86 inch
Maximum grinding area W 31.89 inch 31.89 inch 31.89 inch 31.89 inch 31.89 inch
Maximum grinding area L 49 inch 61 inch 80 inch 100 inch 120 inch
Max. distance between spindle center to table 31.5/39.4(optional) 31.5/39.4(optional) 31.5/39.4(optional) 31.5/39.4(optional) 31.5/39.4(optional)
Down feed per division (MPG) 0.0001,0.0005,0.001 inch 0.0001,0.0005,0.001 inch 0.0001,0.0005,0.001 inch 0.0001,0.0005,0.001 inch 0.0001,0.0005,0.001 inch
Down feef per revolution (MPG) 0.01,0.05,0.1 inch 0.01,0.05,0.1 inch 0.01,0.05,0.1 inch 0.01,0.05,0.1 inch 0.01,0.05,0.1 inch
Auto downfeed Servo motor 0.0005-0.002 inch 0.0005-0.002 inch 0.0005-0.002 inch 0.0005-0.002 inch 0.0005-0.002 inch
Longitudinal table speed 10-105 fpm 10-105 fpm 10-105 fpm 10-105 fpm 10-105 fpm
Crossfeed intermittent 0.004-1.57 inch/feed 0.004-1.57 inch/feed 0.004-1.57 inch/feed 0.004-1.57 inch/feed 0.004-1.57 inch/feed
Crossfeed continuous 0.9-5 fpm 0.9-5 fpm 0.9-5 fpm 0.9-5 fpm 0.9-5 fpm
Crossfeed per division 0.0001,0.001,0.005 inch 0.0001,0.001,0.005 inch 0.0001,0.001,0.005 inch 0.0001,0.001,0.005 inch 0.0001,0.001,0.005 inch
Grinding wheel dimension (ODxIDxWidth) 20x5x2 / (20x5x3 optional) 20x5x2 / (20x5x3 optional) 20x5x2 / (20x5x3 optional) 20x5x2 / (20x5x3 optional) 20x5x2 / (20x5x3 optional)
Spindle speed(50/60HZ) 1450/1720 R.P.M. 1450/1720 R.P.M. 1450/1720 R.P.M. 1450/1720 R.P.M. 1450/1720 R.P.M.
Spindle motor 15/25(optional) H.P. 15/25(optional) H.P. 15/25(optional) H.P. 15/25(optional) H.P. 15/25(optional) H.P.
Hydraulic pump motor 7.5 H.P. 7.5 H.P. 7.5 H.P. 10 H.P. 10 H.P.
Total power motor 24/34 H.P. 24/34 H.P. 24/34 H.P. 26.5/36.5 H.P. 26.5/36.5 H.P.
Floor space L 187 inch 211 inch 250 inch 289 inch 329 inch
Floor space W 135 inch 135 inch 135 inch 135 inch 135 inch
Floor space H 96.8 inch 96.8 inch 96.8 inch 96.8 inch 96.8 inch
Net weight(approx) 17380 lbs 19140 lbs 22220 lbs 25300 lbs 27940 lbs
Chuck weight (lbs) 1200 lbs 1310 lbs 2070 lbs 2590 lbs 3100 lbs
Maximum workpiece on chuck 2640 lbs 3300 lbs 3960 lbs 3960 lbs 4400 lbs

Accessories

Standard Accessories
Grinding wheel (1 Pc.)
Wheel flange (1 set.)
Coolant system (1 set.)
Tools with box (1 set.)
Balancing arbor (1 Pc.)
Wheel extractor (1 set.)
Chiller for hydraulic oil (1 set.)
Hydro static system (1 set.)
Optional Accessories
Electro-magnetic chuck (Includes rectifier with automatic demagnetizing.)
Spare wheel flange
Balancing stand
Halogen machine lamp
Coolant system with paper filter
Magnetic dust separator
DRO 1 or 2 Axis
Variable speed spindle
Air conditioner for electric
Vertical spindle grinding equipment (OA type only)

PROMOTIONS

PROMOTIONS