Power Seven Series - Heavy Duty Engine Hollow Spindle Lathes

American Turnmaster Power Seven Series
Models 70, 80, 90, and 100 Swing
Heavy Duty Lathe with 4-Shear Bed and Variable Spindle Speeds

Outstanding Features
• Massive one-piece floor type bed and base (no pedestals) for maximum rigidity and vibration absorption
• Highest quality Meehanite G-50 castings
• 4-shear bed with dual way center guide plus front lateral way for carriage support under heavy cutting
• Automatic lubrication throughout
• Massive power tailstock with 11” (280 mm) diameter quill and built-in rotary (live) center. Movement of body on bedways and quill travel controlled by hydraulics
• A2-15 American Standard spindle nose with 9” (230 mm) spindle bore is standard
• Variable spindle speeds in four automatic ranges through pneumatic shifting, 10 to 300 RPM
• Hardened and precision ground bed and cross-slide ways
• Hardened and precision ground head stock gears
• 4-way power rapid traverse plus geared feed and rapid traverse to top slide for oblique cutting
• Carriage mounted pendant controls
• Pendant controls for tailstock functions

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Power Seven Specifications

Standard Equiptment

6” (153 mm) Spindle Bore
4-speed auto shift transmission
Built-in air supply system for auto shift
Pendant control console on Carriage
Electric-mechanical Apron stop
Overload Safety Device
Automatic Lubrication System
Flood Coolant System
Necessary Service Tools, Operators Manuals and Test Certificate
Complete 3/50 – 60/440/480 Volt Electrics

Carriage mounted Pendant Control Station incorporating the following:
Spindle forward – reverse
Spindle jog
Carriage rapid traverse
4-step spindle speed range selection
Electric power auto stop
Spindle start
Emergency stop
Variable speed potentiometer switch

Tailstock control incorporating:
Hydraulic Quill Travel, forward
Hydraulic Quill Travel, reverse
Tailstock bed travel, forward
Tailstock Bed travel, reverse
Emergency stop

MODEL	70 Series	80 Series	90 Series	100 Series
Capacity
Swing over bed	70” (1790 mm)	80” (2040 mm)	90” (2290 mm)	100” (2540 mm)
Swing over cross slide	53” (1350 mm)	63” (1590 mm)	73” (1840 mm)	82” (2090 mm)
Distance between centers	47 1/2” (1210 mm)
Width of bed, across 4-shears	40” (1020 mm)
Width of bed, including auxiliary lateral guide	54” (1370 mm)
Headstock
Spindle bore, standard	9.055”		230 mm
Spindle nose, standard	A2-15
Spindle speeds, number	INFINTE VARIABLE
Spindle speed range	10 to 300 RPM
Number of Auto Shift Speed Ranges	4
Range 1 speeds	10 to 40 RPM
Range 2 speeds	25 to 90 RPM
Range 3 speeds	40 to 150 RPM
Range 4 speeds	80 to 300 RPM
Main drive motor	50 HP with 75 HP Inverter		38 kW with 56 kW Inverter
Options (extra cost)	75 HP with 100 HP Inverter100 HP with 125 HP Inverter		56 kW with 75 kW Inverter75 kW with 92 kW Inverter
Carriage & Apron
Travel, cross slide	51.180" (1300mm)
Travel, top slide (power)	19.685" (500mm)
Threads & Feed
Inch thread range	½ to 28 tpi (60)
Metric thread range	1 to 56 mm (60)
Modular thread range	0.25 ~ 14 mp (60)
Diametral thread range	0.2 ~ 112 DP (60)
Longitudinal feed range	0.018 ~ 0.1 ipr		0.045 ~ 2.55 mpr
Cross feed range	0.01 ~ 0.05 ipr		0.023 ~ 1.28 mpr
Rapids, longitudinal	80 ipm		2000 mpm
Rapids, cross	40 ipm		1000 mpm
Tailstock (Hydraulic Movement of Body and Quill
Diameter of Quill	11"(280mm)
Quill traverse (two speed)Taper of center (built-in live)	No. 6 MT
Quill travel (power)	10"(250mm)
Control Station	Pendant Control
Weight Capacity & Physical Workpiece weight capacity:
Between centers	35,000 lbs (15,876 kg)
Between centers, with one steady rest	40,000 lbs. (18,145 kg)
Between centers, with two steady rests	45,000 lbs. (20,412 kg)
In-chuck x 10” (250 mm)	22,000 lbs (10,000 Kg)
Machine Net Weight Power Six (80”) 2000 mm centers	49,940 lbs 22,700 Kgs	53,240 lbs 24,200 Kgs	41,140 lbs 25,700 Kgs	43,340 lbs 27,200 Kgs