| GMC LATHE | Specifications |
| Model | GT-2660 , GT-2680 , GT-26120 |
| Size | 26" x 60" , 26" x 80" , 26" x 120" |
| Swing over bed | 26" |
| Distance between centers | 60" , 80" , 120" |
| Max swing over cross-slide | 16-1/2" |
| Max swing in gap | 34-1/4" |
| Width of bed | 15-1/2" |
| Effective length in gap to spindle | 9" |
| Effective length in gap to chuck jaws | 6" |
| Spindle hole dia. | 4-1/8" |
| Spindle | D1-8 Camlok |
| Taper of spindle center | MT # 6 |
| Spindle speeds ( 12 ) | 36 - 1600 RPM |
| Longitudinal feeds | 0.0023 - 0.93 IPR, 65 kinds |
| Cross feeds | 0.0011 - 0.04 IPR, 65 kinds |
| Threads | Details |
| Inch threads | 28 - 2 TPI 27 kinds |
| Metric threads | 1 - 14 mm , 22 kinds |
| Diamentral pitch threads | 56 - 4 DP , 24 kinds |
| Module threads | 0.5 - MM , 18 kinds |
| Carriage | Details |
| Maximum travel of top slide | 5-3/4" |
| Maximum travel of cross-slide | 14" |
| Longitudinal rapid traverse | 18 ft / Min |
| Cross rapid traverse | 8 ft / Min |
| Tailstock | Details |
| Diameter of tailstock quill | 3" |
| Maximum travel of tailstock quill | 6" |
| Taper of tailstock quill center | M.T. # 5 |
| Max. weight of workpiece | 2000 lbs |
| Motors | Details |
| Main motor ( Pre-wired 220 V / 3 ) | 15 HP, 220/440 V, 3 phase |
| Rapid traverse motor | 1/3 HP, 220/440 V, 3 phase |
| Coolant pump motor Pre-wired 220 V / 3 ) | 1/8 HP, 220/440 V, 3 phase |
| Machine net weight | Details |
| GT-2660 | 8,150 lbs |
| GT-2680 | 8,700 lbs |
| GT-26120 | 9,350 lbs |
| Overall dimensions | Details |
| GT-2660 L x W x H | 122" x 45" x 66" |
| GT-2680 L x W x H | 142" x 45" x 66" |
| GT-26120 L x W x H | 182" x 45" x 66" |
Machine Standard Features and Equipment:
· ISO 9001 certified
· Large spindle bore 4-1/8”
· Adjustable mechanical spindle clutch for spindle start
Forward/reverse and brake, spindle brake without stop the spindle motor to longer motor 8 times life than most other Brand lathe with
electrical start/stop.
· 4-way rapid traverse on Longitudinal and cross ways
· All dual inch/metric dials.
· solid cast iron machine base
· Heavy Duty guideway width 15-1/2”
· Heavy Duty main motor 15 HP
· 12 spindle speeds from 36-1,600 rpm
· Oil pump on apron for all ways and leadscrews
· Threading and feeding rate change without changing gears
· Spindle is balanced, hardened and precision ground
· Spindle is supported at 3-point
by high precision bearings
· All gears and shafts are hardened and precision
ground
· Guideways induction hardened and precision ground
· Automatic lubrication system in headstock and feed box
Standard Equipment for “GMC” Heavy Duty Lathes
Model # GT-2660 / GT-2680 and GT-26120:
· Free Taper turning attachment, , installed
· 12” 3-jaw chuck with top reversible jaws
· 20” 4-jaw chuck with top reversible jaws
· 24” Face plate
· 10” drive plate
· 4-3/4” – 10-1/4” large steady rest
· 1”-3” follow rest
· Removable gap
· 4-way tools post
· Foot brake
· Halogen Work light
· Coolant system
· Oil pump on apron for lubrication to all ways and leadscrews
· Full length rear splash guard for GT-2660 & GT-2680 only
· Section splash guard
on Apron for GT-26120 only
· (2) dead centers and (1) reducing sleeve
· Thread chasing dial
· Tool box
