(1) NEW SUMMIT PRECISION ENGINE LATHE, MODEL #: 20-4 X 80B

Brand
SUMMIT

Model
20-4 x 80B

Stock #
83158

Condition
New

Year
N/A

Equipped With

Specifications:
Capacities

Swing over bed                                     20 1/4”

Swing over cross slide                           11 7/8”

Workpiece Weights

At the headstock                                   400 lbs.

Between chuck and tailstock                  2,000 lbs.

Between chuck and tailstock

   w/steady rest                                      4,000 lbs.

Headstock

Spindle speeds (no.) range RPM            (15) 11.5-1400

Hole through spindle                             4 1/8”

Spindle nose                                         D1-8 Camlock

Headstock Center                                  #6 MT

Quick Change Gearbox

Threads per inch (no.) range      (64)       ¼ - 60

Metric threads (no.) range          (64)       .5 - 120

Module threads (no.) range        (64)       .125 - 30

Diametral Pitch (no.) range        (64)       1 - 240

Longitudinal feeds (no.) range    (124)     .00145-.44474

Cross feeds (no.) range             (56)       .0007-.22237

Leadscrew (Dia) range               (2”)       2 TPI

Feed rod diameter                                 1”

Carriage & Apron

Cross Slide Travel                                 12 ½”

Compound rest travel                            5 3/8”

Graduation of apron handwheel              .020

Graduation of cross slide handwheel      .002 (Dir read)

Tailstock

Travel of spindle barrel                          9 ½”

Diameter of spindle barrel                      3 ½”

Taper of center                                     #5 MT

Two Speed                                           1:1, 4:1

Bed

Width of bed                                         15 ¾”

Depth of bed                                         16 7/8”

Hardness of bed (Rockwell C)                42-48

Taper Attachment

Degrees of taper                                   +/- 10 Degrees

Maximum turning length per setting        15 ¾”

Motors

Main Drive                                            10 HP

Coolant pump                                       ¼ HP

Steady and Follow Rest

Standard Steady Rest                            ½”-6 1/8”

Extra Capacity Steady Rest                   5” – 11”

Follow rest                                            ½”- 7 7/8”

Shipping Data

Overall width                                         48”

Overall height                                        60”

Overall length                                        156”

Weight                                                  7,700 lbs

 

Electrics:
220/440/3/60

Standard Features:

Ø  Big 4 1/8” thru hole

Ø  Inch/metric threads w/single switch lever

Ø  Cuts most inch/metric threads without change gears

Ø  Hardened & ground bedways

Ø  Force lubrication to the headstock, carriage and bedways

Ø  Mechanical disc clutch

Ø  Precision (3) bearing spindle

Ø  Crossfeed and threading safety interlock

Ø  Feed reversing at the apron

Ø  4-way rapid traverse

Ø  Single lever control for feeds and rapids

Ø  Two Speed Tailstock

Included Accessories:

Ø  Standard Steady Rest

Ø  Extra Capacity Steady Rest w/Rollers

Ø  Follow Rest

Ø  Thread Dial

Ø  Coolant System

Ø  Taper Attachment

Ø  12” Cast Body 3 Jaw Chuck w/2 Piece Jaws

Ø  Carriage Stop

Ø  Work Light

Ø  Full Length Splash Guard

Ø  Service Wrenches & Spanners

Options:

12” Steel Body 3-Jaw Chuck

    w/2 Piece Reversible Jaws in Lieu of

    Standard Chuck                                 $1,900

15 ¾” Semi-steel 4 Jaw Chuck               $5,000

15 ¾” Steel Body 4 Jaw Chuck

    w/2 Piece Reversible Jaws                 $5,500

Aloris Quick Change Tool Post

   w/Holders (2#1, 2#2)                           $1,600

Newall 2 Axis Digital Readout Installed   $5,000

Fagor 2 Axis Digital Readout Installed     $4,000

**Installation Assistance                        TBD

DELIVERY:
SUBJECT TO STOCK

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