MANUAL LATHES
GTD-44HL
44” – 55” HEAVY DUTY BIG BORE LATHES
- Hardened and ground Turcite® coated bed ways
- Hardened and ground gears
- 30-HP spindle motor
- 16-speed geared head spindle
- Rear spindle mount optional
- Safety chuck guard
MACHINE SPECIFICATIONS
Capacity & Dimensions
Swing over Bed | 44″ | (1,120 mm) |
Swing over Cross Slide | 31.89″ | (810 mm) |
Swing thru Gap | 61″ | (1,550 mm) |
Width of Gap (measured from spindle nose) | 22.05″ | (560 mm) |
Distance between Centers (Dependent upon bed selected) | 39″ – 315″ | (1,000 – 8,000 mm) |
Bed Width | 24″ | (610 mm) |
Spindle
Spindle Motor Horsepower | 30 HP | |
Spindle Speeds – 6″ Bore = 16 speeds from 4 – 420rpm | ||
Spindle Bore – (10″, 12″ & 15″ spindle bores optional) | 6″ | (152mm) |
Spindle Nose | A2 – 11 | A2 – 15 & A2 – 20 optional |
Spindle taper in Spindle Nose | MT-7 | MT-7 |
Spindle center height to base | 49″ | (1245mm) |
Spindle Weight Capacity
Workpiece weight limit when held by chuck only | 4,400 lbs | (2,000 kgs) |
Workpiece weight limit when held by chuck and tailstock | 13,200 lbs | (6,000 kgs) |
Workpiece weight limit when held by chuck, tailstock & steadyrest | 17,600 lbs | (8,000 kgs) |
Carriage
Cross Slide Travel | 20.87″ | (530 mm) |
Carriage Slide Width | 11.81″ | (300 mm) |
Width of Carriage | 31.10″ | (790 mm) |
Compound Rest Travel | 14.57″ | (370 mm) |
Cutting Tool Height Maximum | 1.26″ x 1.26″ | (32 x 32 mm) |
Tailstock (2 speed quill advance)
Quill Diameter (5.9″ diameter optional) | 4.92″ | (125 mm) |
Quill Stroke | 11.8″ | (300 mm) |
Quill Taper | MT-6 | MT-7 Optional |
Quill advance – 2 speed ratios | 1:1 and 5:1 | 5X Thrust Force Multiplier |
Tailstock body set-over adjustment | ±0.4″ | (±10 mm) |
Thread Cutting
Lead screw diameter & pitch | 2.36″ x 2 TPI | |
Thread Cutting Range – 70″ pitches | 0.25 – 30 TPI | |
Thread Cutting Range – 62 metric pitches | 1 – 120 mm | |
Thread Cutting Range -70 diametral pitches | 1 – 120 D.P. | |
Thread Cutting Range – 53 module pitches | 0.25 – 30 M.P. |
Feeds
Feed Shaft Diameter | 1.26″ | (32 mm) |
Feeds – Longitudinal | 0.0028″ – 0.34 / rev | (0.072 – 8.68 mm / rev) |
Feeds – Cross Sign | 0.0014″ 0.17″ / rev | (0.036 – 4.34 mm / rev) |
Power
Connected load – 86 Amps Full Load | Wired 440 vac (220 / 440 vac motor) | |
Coolant Motor (coolant capacity shown with pricing) | 0.25 HP | (0.2 kw) |
Rapid Traverse Motor | 1 HP | (0.75 kw) |