(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 inch
SWING OVER CROSS SLIDE -------------- 11 7/8 inch
SWING OVER GAP ---------------------- 27 5/8 inch
LENGTH OF GAP ----------------------- 15 inch
LENGTH OF GAP IN FRONT OF FACEPLATE - 8 3/8 inch
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 inch
SPINDLE NOSE ------------------------ D1-8 CAMLOCK
HEADSTOCK CENTER -------------------- #6 MT
QUICK CHANGE GEARBOX:
THREADS PER INCH (NO.) RANGE -------- (64) 1/4 - 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 inch) 2 TPI
FEED ROD DIAMETER ------------------- 1 inch
CARRIAGE & APRON:
CROSS SLIDE TRAVEL ------------------ 12 1/2 inch
COMPOUND REST TRAVEL ---------------- 5 3/8 inch
GRADUATION OF APRON HANDWHEEL ------- .020
GRADUATION OF CROSS SLIDE HANDWHEEL - .002 (DIR READ)
TAILSTOCK:
TRAVEL OF SPINDLE BARREL ------------ 9 1/2 inch
DIAMETER OF SPINDLE BARREL ---------- 3 1/2 inch
TAPER OF CENTER --------------------- #5 MT
TWO SPEED --------------------------- 1:1, 4:1
BED:
WIDTH OF BED ------------------------ 15 3/4 inch
DEPTH OF BED ------------------------ 16 7/8 inch
HARDNESS OF BED (ROCKWELL C) -------- 42-48
TAPER ATTACHMENT:
DEGREES OF TAPER -------------------- 10 DEGREES
MAXIMUM TURNING LENGTH PER SETTING -- 15 3/4 inch
MOTORS:
MAIN DRIVE -------------------------- 10 HP
COOLANT PUMP ------------------------ 1/4 HP
Electrics:
220/440/3/60
STEADY AND FOLLOW REST:
STANDARD STEADY REST ---------------- 1/2 inch-6 1/8 inch
EXTRA CAPACITY STEADY REST ---------- 5 inch ?? 11 inch
FOLLOW REST ------------------------- 1/2 inch- 7 7/8 inch
SHIPPING DATA:
OVERALL WIDTH ----------------------- 48 inch
OVERALL HEIGHT ---------------------- 60 inch
OVERALL LENGTH ---------------------- 156 inch
WEIGHT ------------------------------ 7,700 LBS
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)                           $1,400
Fagor 2 Axis Digital Readout Installed     $4,100
**Installation Assistance                        TBD

DELIVERY:
SUBJECT TO STOCK

Not Quite What You're Looking For?

Our knowledgeable staff will assist you with all of you questions.

Contact Us