MANUAL LATHES
GTW-20
20″ Heavy Duty Engine Lathe
- Heavy duty 10-HP D1-8 spindle with 20” Swing
- Hardened and ground Turcite® coated bed ways
- Hardened and ground gear
- 12-speed geared head spindle
- Safety foot brake
- Safety chuck guard
MACHINE SPECIFICATIONS
Capacity & Dimensions
Swing over Bed | 20″ | (510 mm) |
Center Height | 10″ | (255 mm) |
Swing over Cross Slide | 13″ | (330 mm) |
Swing thru Gap | 26 3/8″ | (680 mm) |
Length of Gap in front of D1-8 face plate | 7 1/16″ | (180 mm) |
Bed Casting – width / height | 16 1/8″ / 12 7/32″ | (400 mm / 310 mm) |
Spindle
Spindle Motor Horsepower | 10 HP 3 Phase | |
Spindle Speeds – 12 speeds 20 – 1,550 RPM (high to low) | ||
Spindle Bore | 3 1/8″ | (80 mm) |
Spindle Nose | D1-8 Cam lock | |
Spindle taper in Spindle Nose | MT-7 | Morse Taper #7 |
Spindle taper reduction sleeve provided | MT-7 to MT-5 |
Carriage
Cross Slide Travel | 12 1/2″ | (320 mm) |
Cross Slide Width | 7 3/32″ | (180 mm) |
Cross Slide Lead Screw Pitch | .200″ / rev | |
Cross Slide Resolution per division | 0.001″ | (on diameters) |
Carriage Lead Screw Diameter | 1 1/2″ | (38 mm) |
Carriage Lead Screw Pitch | 4 TPI | (6 mm pitch) |
Feed Rod Dimensions | 7/8″ hexagon | 23 mm hexagon |
Compound
Compound Top Side Travel | 10″ | (255 mm) |
Compound Top Slide Width | 4 11/32″ | (110 mm) |
Cutting Tool Height Maximum | 1.0″ x 1.0″ | (25 mm x 25 mm) |
Tailstock (2 Speed Quill Advance)
Quill Diameter | 2-15/16″ | (255 mm) |
Quill Stroke | 6 5/16″ | (160 mm) |
Quill Taper | MT-5 | Morse Taper #5 |
Quill Tang Drive and Drift-Slot for Tailstock | included | |
Tailstock Body set-over adjustment | ±0.04″ | ±1 mm |
Thread Cutting
Leadscrew Diameter / Pitch | 1 1/2″ / 4 TPI | 38 mm / 6 mm pitch |
Thread Cutting Range – 60″ pitches | 2 – 112 TPI | |
Thread Cutting Range – 60 metric pitches | 0.2 – 14 mm | |
Thread Cutting Range – 50 diametral pitches | 4 – 112 M.P. | |
Thread Cutting Range – 50 module pitches | 0.2 – 7 M.P |
Feeds
Feeds – Longitudinal – 50 Feeds | 0.0014″ – 0.0387”/rev. (0.037 – 1.04 mm / rev) |
Feeds – Cross – 50 Feeds | 0.0007″ – 0.01935″/rev. (0.0185 – 0.52 mm/ rev) |
Feed stop shaft | 4 adjustable automatic feed stops to disengage the longitudinal feed |
Coolant Pump | 1/8 HP |
Machine Power Requirements (440 vac optional) | 220 vac / 3 Phase / 30 amps |