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

SPECIFICATIONS
FILES & ATTACHMENTS

Equipped With

SPECIFICATIONS:
Capacities:
Swing over bed                                     20 1/4”
Swing over cross slide                           11 7/8”
Swing over gap                                     27 5/8”
Length of gap                                       15”
Length of gap in front of faceplate          8 3/8”
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
FEATURES:
* Big 4 1/8” thru hole
* Inch/metric threads w/single switch lever
* Cuts most inch/metric threads without change gears
* Hardened & ground bedways
* Force lubrication to the headstock, carriage and bedways
* Mechanical disc clutch
* Removable gap
* Precision (3) bearing spindle
* Crossfeed and threading safety interlock
* Feed reversing at the apron
* 4-way rapid traverse
* Single lever control for feeds and rapids
* Two Speed Tailstock
EQUIPPED WITH:
* Standard Steady Rest
* Extra Capacity Steady Rest w/Rollers
* Follow Rest
* Thread Dial
* Coolant System
* Taper Attachment
* 12” 3 Jaw Chuck w/2 Piece Jaws
* Carriage Stop
* Work Light
* Full Length Splash Guard
* Service Wrenches & Spanners
NOTES:
SPECIFICATIONS SUBJECT TO VERIFICATION
OPTIONAL FEATURES:
12” Steel Body Precision Chuck w/2 Piece Jaws in Lieu of Standard Chuck                                 $2,600
15 ¾” Semi-steel 4 Jaw Chuck               $3,800
15 ¾” Steel Body 4 Jaw Chuck w/2 Piece Reversible Jaws                 $4,500
Aloris Quick Change Tool Post w/Holders (2#1, 2#2)                           $1,500
Fagor 2 Axis Digital Readout Installed     $4,100
Newall 2 Axis Digital Readout Installed   $4,400
**Installation Assistance                        TBD
DELIVERY:
SUBJECT TO STOCK

Files

Summit 20-24-28 Manual Lathes.pdf

Precision Rigging

Precision Finishing

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

Equipped With

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