Top Seller
SUMMIT 20" x 120"B Lathe,
Location:
Hialeah, FL
Manufacturer:
Summit

Specifications

Condition:
used
Stock number:
4544
Division:
Metalworking
Electrics:
220/440/volt, 3 phase, 60 Hz.
Specifications:
SUMMIT MODEL 20-4 x 120B LATHE
Subcategory:
Lathes, engine

Description

STANDARD ACCESSORIES:
Thread dial, Standard steady rest w/rollers (1/2" to 6-1/8" cap.)
Follow rest, Coolant system, Taper attachment, 12-1/2"
diameter 3 jaw chuck with top two piece jaws (semi-steel body)
Turret carriage stop, Four way rapid traverse, Work light and
10 HP main motor
OPTIONAL ACCESSORIES:
BISON 16" dia. 4 jaw chuck, direct mount, semi-steel body (150 lbs) 1,700.00
BISON 20" dia. 4 jaw chuck, direct mount, semi-steel body (250 lbs) 2,600.00
NEWALL "DP700" two axis digital readout system. . . . . . . . . . . 4,350.00
Installation of NEWALL digital readout system . . . . . . . . . . . 600.00
DORIAN quick change toolpost with five holders. . . . . . . . . . . 1,250.00
Inland freight to your facility (estimated) . . . . . . . . . . . . 2,500.00
ELECTRICS: 220/440/volt, 3 phase, 60 Hz.
SPECIFICATIONS: SUMMIT MODEL 20-4 x 120B LATHE
CAPACITIES:
Swing over bed 20-1/4" (515mm)
Swing over cross slide 11-7/8" (300mm)
Swing over gap 27-5/8" (700mm)
Length of gap 15" (380mm)
Length of gap in front of faceplate 8-3/8" (213mm)
Distance between centers 120" (3000mm)
HEADSTOCK:
Spindle speeds--number 15
Spindle speeds--range 11.5 to 1500 rpm
Hole thru spindle 4-1/8" (105mm)
Spindle nose type D1-8 camlock
Headstock center No 6MT
Number of bearings on spindle 3
Main spindle bearing--Outside diameter 8-1/2" (220mm)
Main spindle bearing--Inside diameter 5" (130mm)
QUICK CHANGE GEARBOX:
Threads per inch--number 64
--range 1/4 to 60
Metric threads--number 64
--range 0.5 to 120
Module threads--number 64
--range 0.125 to 30
Diametral pitch--number 64
--range 1 to 240
Longitudinal feeds--number 124
--range .00145 to .44474
Cross feeds--number 124
--range .0007 to .22237
Leadscrew diameter/threads 2"/2 TPI
CARRIAGE & APRON:
Compound rest travel 5-3/8" (136mm)
Compound rest width 5-7/8" (150mm)
Cross slide travel 11-3/8" (290mm)
Cross slide depth of bridge 4-3/4" (120mm)
Cross slide width of bridge 8-1/4" (210mm)
Length of carriage bearing on ways 23"#" (584mm)
Graduation of apron handwheel .020" (0.5mm)
Travel of carriage per
revolution of handwheel 0.875" (22mm)
Graduation of carriage cross
slide handwheel (direct read) 0.002" (0.05mm)
TAILSTOCK:
Travel of spindle barrel 9-1/2" (241mm)
Diameter of spindle barrel 2-15/16" (75mm)
Taper #5 MT
Tailstock body--length on bed 13-3/4" (350mm)
Length of graduations on
tailstock barrel 6" (152mm)
BED:
Width of bed 15-3/4" (400mm)
Depth of bed 16-7/8" (429mm)
Hardened & ground inserted ways 44-48 Rockwell C
TAPER ATTACHMENT:
Degrees of taper +/- 10 degrees
Maximum turning length per setting 15-3/4" (400mm)
DRIVE & MOTORS:
Main drive motor 10 HP (7.5KW)
Coolant pump motor 1/4 HP (0.18KW)
MISCELLANEOUS:
Steady rest capacity--minimum 1/2" (12.5mm)
--maximum 6-1/8" (155mm)
Follow rest capacity--minimum 1/2" (12.5mm)
--maximum 7-7/8" (200mm)
Centerline height above floor 44-1/2" (1130mm)
SHIPPING DATA:
Overall (W x H x L) 48" x 60" x 184"
1220mm x 1525mm x 4925mm
Weight (approx) 7,800 lbs (3,545 kgs)