<p>Make: Bridgeport </p>
<p>Model: Series 1 J Head 42" x 9" </p>
<p>Condition: Used, overall in great shape. </p>
<p></p><p>J Head Series 1 With 6" Vice, Power x Feed, E Shaping Attachment, Tooling, Work Light</p><p>This mill Has a 10" Riser </p><p>42" x 9"</p><p></p><!--StartFragment--><li><strong>X-Axis (Longitudinal Table Travel)<!--TgQPHd|[]--></strong>: <strong>30 inches<!--TgQPHd|[]--></strong> manual (reduced slightly to ~26–28 inches when utilizing the automatic power feed unit on the right side).<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Y-Axis (Cross Saddle Travel)<!--TgQPHd|[]--></strong>: <strong>12 inches<!--TgQPHd|[]--></strong> (This is the defining specification of the <strong>12<!--TgQPHd|[]--></strong>/BR frame stamp).<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Z-Axis (Vertical Knee Travel)<!--TgQPHd|[]--></strong>: <strong>16 inches<!--TgQPHd|[]--></strong> manual vertical lift.<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Ram Travel<!--TgQPHd|[]--></strong>: <strong>12 inches<!--TgQPHd|[]--></strong> forward-and-back sliding range across the turret.<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Max Workpiece Capacity<!--TgQPHd|[]--></strong>: Up to <strong>750 lbs<!--TgQPHd|[]--></strong> centered on the table</li><!--StartFragment--><li><strong>Spindle Taper<!--TgQPHd|[]--></strong>: Standard <strong>R8<!--TgQPHd|[]--></strong> taper (the industry benchmark for manual machine collets).<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Quill Travel<!--TgQPHd|[]--></strong>: <strong>5 inches<!--TgQPHd|[]--></strong> total stroke distance.<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Main Drive Motor<!--TgQPHd|[]--></strong>: Original standard factory build was a <strong>1 HP or 1.5 HP<!--TgQPHd|[]--></strong> motor (typically wired for 230/460V 3-Phase power).<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Spindle Speeds (Manual Belt Change)<!--TgQPHd|[]--></strong>: 8 distinct speed points split across two ranges:<!--TgQPHd|[]--><ul><li><em>Low Range<!--TgQPHd|[]--></em>: 80, 135, 210, 325 RPM<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><em>High Range<!--TgQPHd|[]--></em>: 660, 1115, 1750, 2720 RPM</li></ul><!--StartFragment--></li><li><strong>Functionality<!--TgQPHd|[]--></strong>: A self-contained motor and gearbox system driving a reciprocating vertical ram for cutting interior keyways and slots.<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Stroke Adjustability<!--TgQPHd|[]--></strong>: Adjustable between <strong>0 to 4 inches<!--TgQPHd|[]--></strong> of total vertical stroke travel.<!--TgQPHd|[]--><!--TgQPHd|[]--></li><li><strong>Operating Speeds<!--TgQPHd|[]--></strong>: 6 distinct settings depending on the step-pulley configuration:<!--TgQPHd|[]-->
<ul><li><em>At 60Hz input<!--TgQPHd|[]--></em>: <strong>60, 85, 120, 170, 245, and 350 strokes per minute<!--TgQPHd|[]--></strong></li></ul>
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