TC2 Hydraulic Chuck and 5C Collet Chuck Installation

Use the foot pedal to move draw tube to the fully retracted position. Hold one of the jaws with a crescent wrench and loosen the screws and remove two of the jaws.

Hold the remaining jaw with the crescent wrench and loosen the six screws that are holding the chuck to the spindle

Leave one or two screws in the chuck loosley to prevent the chuck from falling when it comes loose from the draw tube.

Remove the remaining jaw from the chuck.

Remove the chip cover from the center of the chuck

Move the draw tube to the fully extended (open) position. Install the draw nut tool, and unscrew the chuck from the draw tube.

Once the chuck is free from the draw bar remove the one or two screws that were left in the chuck and remove the chuck from the machine.

Once the chuck is removed from the spindle reinstall the center cap and jaws to the chuck and bag the hardware and keep with the chuck for use at a later date.Take note the jaws are numbered and so is the chuck. When reassembling the chuck be sure to put the jaws in the locations that correspond to the numbers.

Clean all of the mounting surfaces and threads with WD40 and use an air gun to remove any chips and debris.

Check mounting surfaces for any nicks or burrs stone if needed with a fine grit stone.

Set the draw tube to th e fully extended position and E-Stop the machine. Apply a light lithium grease or anti-seize to the draw tube threads.

Clean the mounting surfaces and threads on the chuck and apply a lithium grease or anti-seize to the threads. Again check the mounting surface for nicks or burrs and stone if needed.

Lift chuck by hand and align draw nut with draw tube. Thread the chuck onto the draw tube by hand about 1 turn. Now line the chuck up with the alignment pin on the spindle and the mounting screw holes. Install the 6 mounting screws, thread them in but leave them loose for now.

The chuck may have 3 alignment pockets, any one could be used.

Using the chuck draw nut tool thread the chuck onto the draw tube 7.5 more turns (8.5 turns total).

Do not force the draw nut when removing or replacing the chuck. Forcing the draw nut can damage the drawtube threads. The draw nut should turn without binding.

Install a .0001" dial indicator and measure the concentricity of the chuck. Adjust the chuck by tightening or loosening the locking screws at the high or low spots, Adjust to .0008" (20um) or less. See video for reference.

Attach one jaw to the chuck, making sure the number on the jaw matches the number on the slot.

Hold the jaw with a crescent wrench and torque the 6 mounting screws to 53.5 ft-lbs in a crossing pattern. Recheck concentricity one more time to verify it didn't change after torquing the mounting screws.

Detail showing jaw and chuck number locations.

Reinstall the chip cover and all three jaws (matching jaw and slot) to the chuck so the chuck is ready for operation. Torque jaws to 53.5 ft-lbs.

This part of the procedure starts with the chuck removed. For chuck removal procedure see steps 1 and 2.

To install the collet chuck clean the draw tube and collet chuck adapter threads thoroughly. Make sure the draw tube is in the fully extended position. Apply a light coat of lithium grease or anti-seize to the draw tube threads.

The adapter may be installed into the collet chuck when not in use to prevent it from getting lost, if so remove it before installing to draw tube.

Fully thread the collet chuck adapter onto the draw tube.

Do not force adapter onto the draw tube it should thread easily. Forcing the adapter could damage the draw tube threads.

Retract the draw tube.

Clean the taper and mounting surface of the spindle and the inside taper and back mounting surfaces of the collet chuck.

Align one of the 3 alignment holes with the drive button on the spindle and push the collet chuck onto the chuck adapter on the draw tube.

O-ring in collet chuck may have swollen over time. If you run into difficulty installing the chuck over the collet adapter, the o-ring may need to be replaced. A spare O-Ring comes with the collet chuck kit.

Insert the six(6) M10 X 30 SHCS screws and torque to 53.5ft-lbs.

To install the collet move the draw tube to the fully extended position. Remove the drive key(silver M5 SHCS) and both of the M5 X 16 SHCS from the collet chuck.

The 5C collets have a keyway in them that corresponds with the drive key in the collet chuck. When the collet is installed and adjusted the collet is oriented so the tip of the drive key fits into the keyway. The drive key is then tightened to prevent the collet from coming loose during operation.

Take note of where the keyway on the collet is located. Use the collet tool to install the collet and thread into draw tube adapter until collet angle contacts angle in collet chuck. Continue to thread collet into draw tube adapter until the keyway in the collet lines up with one of the tapped holes in the collet chuck.

Collet tool comes from the manufacturer with the collet chuck kit.

Insert and tighten drive key in collet keyway. Insert and tighten the two(2) M5 X 16 SHCS into the collet chuck.

To verify the collet adjustment clamp and unclamp the collet several times to verify the collet clamps tightly on the material when closed and that the material can be removed and reinserted when open.

You may need to remove the drive key and M5 X 16 SHCS and tighten or loosen the collet 120 degrees to get proper collet adjustment. Reinsert drive key and both M5 SHCS when adjustment is complete.

There are two sensors located on the coolant collector at the back of the spindle. These sensors are used to indicate the limits of drawtube actuation.

After changing the work clamping device the drawtube travel may have changed and the sensors may need realigning.

To realign the sensors:

Loosen the two screws holding each sensor plate in place.

Open chuck or collet, then move the left sensor plate (chuck out sensor) so the sensor will only light up when the drawtube is at its fully forward or "out"position and tighten the two screws holding the sensor plate in place.

Close the chuck or collet and move the right sensor plate (chuck in sensor) so the sensor will only light up when the drawtube is at its fully backward or "in" position and tighten the two screws holding the sensor plate in place.

Actuate the drawtube back and forth a few times to confirm the sensors are detecting the max travel of the drawtube actuation.

When the work holding device is clamping on a workpiece neither sensor should be lit. The work holding device should be clamping the work piece in the center of the drawtube travel.