JACOBS 18N HD BALL BEARING SUPER CHUCK, 1/8-3/4 IN CAP, #4MT/5MT ADAPTOR

THIS IS A JACOBS 18N HEAVY DUTY BALL BEARING SUPER CHUCK, DESIGNED FOR DRILLING APPLICATIONS AS PART OF GENERAL TOOLING AND ACCESSORIES. IDENTIFIED BY THE PART NUMBER 18N, THIS JACOBS CHUCK FEATURES A BALL BEARING DESIGN BUILT FOR HIGH-PRECISION AND HEAVY-DUTY USE. THE CHUCK’S CAPACITY IS SPECIFIED FROM 1/8 TO 3/4 INCHES, WHICH IS EQUIVALENT TO A METRIC RANGE OF 3 TO 19 MILLIMETERS. THE UNIT IS CONFIGURED WITH A NO. 4 MORSE TAPER (#4MT) ARBOR AND INCLUDES AN ADAPTOR SLEEVE TO ALLOW MOUNTING ONTO A NO. 5 MORSE TAPER (5MT) SPINDLE, ENSURING ADAPTABILITY ACROSS DIFFERENT MACHINE TOOL INTERFACES.