Made in Taiwan  ISO 9001 certified Spindle run-out within 0.00005” ( 50 millionths inch )   Turcite-B coating on guideways  3HP Yaskawa inverter drive spindle motor  Infinity Yaskawa inverter drive spindle speeds from 0-4,000 rpm Easy to read digital readout on actual spindle rpm speeds Electric variable automatic feeding control on carriage and cross slide  Quick change tool post slide for threading  Inverter drive main motor 3HP, 220V, works on both power 3 phase/1 phase Dual range inch/metric quick change gear box for model # GMCTL-618EVS Digital control & inverter drive gearbox ( no change gear ) for #GMCTL-618E, easy cutting threads, variable inch / metric threads range  Automatic thread length control w/ fine adjustable stops for accurate threading 36 kinds of inch threads, and 36 kinds of metric threads Spindle is balanced, hardened and precision ground High precision pre-loaded angular contact bearings for spindle   Lubrication system for headstock, feed box, ways and leadscrews  Power 220V, 3 phase ( 220V, 1 phase is optional )  One year industrial  warranty for parts Specifications   GMC TL-618EVS Max. swing over cross slide               6” Distance between centers               18”                    Max. swing over bed               11” Swing over carriage                   9” Spindle capacity:                                       with 3-jaw chuck                 6” With expanding collets               3” With round 5C collets              1-1/16” With hexagon 5C collets               7/8” With Square 5C collets                3/4” With step chucks         1-1/16” to 6” Spindle nose diameter             2.189” Spindle nose ID/OD   5C / 4 degree taper Spindle thru hole Bar stock diameter with 5C closer         1-1/4”         1-1/16” Variable spindle speeds 0-4,000 rpm (with 5C) 0-3,000 rpm (with 6” 3-jaw chuck) Leadscrew diameter / pitch  1” /  8TPI Carriage power feed speed range 5/16” to 7” /min. Cross slide power feed range   3/16” to 4” / min. Cross slide travel          6” Quick change compound slide travel       0.1” Compound slide travel          3” Inch threads 11-118 TPI , 36 kinds  Metric threads  0.275-2.7mm, 36 kinds Tailstock quill diameter        1-3/8” Tailstock quill taper      MT# 2  Tailstock quill travel      3-3/4”                              Spindle motor ( inverter drive )  3HP, 220V, 3 phase or 1 phase DC feeding motor    110V, 70 W  Inverter drive for gear box          ---  Coolant pump  1/8HP, 220V, 3 phase  Machine weight , approx.          2,530 LBS  Machine dimensions, LxWxH     73” x 30”x 67” For more complete information: https://www.gmcmachinetools.com/catalog