A2-6 25C to 16C Spindle Collet Adapter Assembly

Spindle Collet Adapter Parts Lists:

• 25C-16C Draw Tube Adapter 74630000000000
• 25C-16C Reducer Bushing 74610000000000
• (4) Bolts: MS-0104219
• 20C-16C Adapter Cap 75430000000000
• Quad Ring 41 001115145
• 16C Key 74650000000000
• Permabond 910 QC-0010884

Mounting Instructions for 20C-to-16C and 25C-to-16C Spindle Collet Adapters for Hardinge 20C and 25C Spindle Lathes

• Remove any collet or step chuck which may be in the lathe spindle.
• Remove any spindle-mounted device (step chuck closer, jaw chuck, expansion collet mount, face plate, etc.) which may be on the machine.
• Thoroughly clean inside the spindle, as well as the spindle mount locating surfaces, to remove all chips, grit and coolant. Use a lint-free cloth to insure the surfaces are completely free of lint.
• Use Die Maker's Grease and coat all surfaces.
• Remove the draw tube from the spindle of the lathe. (Refer to the Operator's Manual for your lathe to obtain instructions for this procedure.)
• Clean the threads in the draw tube and on the Draw Tube Adapter. Coat the threads with Die Maker's Grease.
• Put the draw tube in a vise with soft or copper jaws. Grip the tube just behind the collet threads.
• Firmly tighten the Draw Tube Adapter into the machine draw tube using a spanner wrench or a piece of 1/4" round stock.
• Replace the draw tube in the lathe per the instructions in the Operator's Manual.
• Actuate the collet closer to its full forward position.
• Insert the Reducer Bushing into the spindle. This bushing slides over the Draw Tube Adapter inside the spindle.
• Mount the Adapter Cap on the spindle, orienting as shown on the face of the cap. Tighten the four mounting Bolts.
• Insert the 16C collet & turn the draw tube to catch the collet threads. Adjust the collet using the methods outlined in the lathe Operator's Manual.

NOTE: Do not Exceed 7,000 Lbs. draw force.