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47″, 55″, 63″ Big Swing Hollow Spindle Lathes

6″ to 21″ Spindle Bores, Center Distances: 80″ to 360″

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Summit® Big Swing Hollow Spindle Lathes (47″, 55″ and 63″) have set a new standard among machining tools in this size range with their unprecedented depth and combination of “standard” features. These lathes are designed to provide the precision and rugged reliability required for today’s demanding applications. The Big Swing Hollow Spindle lathes are available in center distances from 80″ to 360″ with spindle bores from 9″ to 21″ to cover a wide range of work pieces and feature castings that are heavily ribbed for rigidity and vibration dampening. The headstock is designed with straight cut final drive gears to provide quiet and efficient operation through the full range of spindle speeds. The extra wide (31.5″) bed ways are hardened and precision ground to provide high accuracy and long life and the bed is constructed from high-grade alloyed cast iron, normalized and aged to achieve maximum stability. An additional third way is provided on the front of the bed to provide additional support to the carriage to prevent deflection even in the heaviest cuts.

  • Quick Change Gear Box Will Cut Inch and Metric Threads
  • Hardened & Precision Ground Bed Ways
  • 4-way Rapid Traverse
  • Two Speed Tailstock
Included Accessories
  • Thread dial
  • Steady rest
  • Follow rest
  • Full Length Splash Guard (up to 240″)
  • Chuck Guards
  • Taper Attachment
  • Halogen Work Light
  • Coolant System
Specifications: 47-9 55-9 63-9
Capacities
Swing over bed 47″ / 1200mm 55″ / 1400mm 63″ / 1600mm
Swing over cross slide 32.6″ / 830mm 40.5″ / 1030mm 48.4″ / 1230mm
Workpiece Weights
Between centers 38,500 lbs / 17,500 kg
Headstock
Spindle bore 9″ / 230mm 12.2″ / 310mm 14.2″ / 360mm 21″ / 535mm
Spindle nose A2-15 A2-20 A2-28
Spindle speeds range 6 – 400 5 – 300 3 – 230
Carriage
Cross slide travel 30.7″ / 780mm
Compound travel 13.7″ / 350mm
Gearbox
Longitudinal feeds (no.) range (48) 0.13 – 1.92
Cross feeds (no.) range (48) 0.065 – 0.96
Threads per inch (no.) range (48) 1-15 TPI
Metric threads (no.) range (48) 2 – 30mm/pitch
Tailstock
Quill diameter 7.9″ / 200mm (Standard) or 11.4″ / 290mm for Rotary Quill (Optional)
Quill travel 11.8″ / 300mm
Tailstock center #7 MT
Bed
Width of bed 31.5″ / 800mm
Motor
Main drive motor 30 HP (40 HP & 50 HP optional)
Miscellaneous
Shipping weight (approx. 200″ centers) 39,620 lbs. 43,120 lbs 46,620 lbs.
Summit Machine Tool
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Summit Machine Tool
518 N Indiana Ave
Oklahoma City, OK 73106

Toll Free: (800) 654-3262
Local: (405) 235-2075
Fax: (405) 232-5169
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