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SKU 42827 For technical questions, please call 1-800-444-3353. Page 11
The spindle bearing is very hot.
1. There is insufcient lubrication. Turn off the power, and check the bearing for lubrication. If
necessary, apply a medium weight bearing grease.
2. The spindle bearing is worn, or is xed too tight. Turn off the power, unplug the electrical
connection, and rotate the spindle by hand. It must turn freely. If not, check the bearing
adjustment. If you feel unevenness in the bearing, you will have to replace it.
3. The spindle has been turning at high speed for a long time. After long use, turn the machine off
for a while to give it a rest, and allow it to cool off.
The Table Travel is not Balanced
1. The spindle taper gap is too wide. Adjust the arbor bolt properly.
2. One of the leaf bolts may be loose. Check and tighten them if necessary.
3. The feed is too deep. Reduce the depth of the cut, and make several passes to reach the required
depth.
4. The gib strip may be out of adjustment. Check it and adjust it if necessary.
There is a vibration, and the cut is not smooth
1. The spindle bearing may be improperly adjusted or is worn. Check it and adjust or replace as
necessary.
2. The spindle is loose up and down. Check the adjustment of the two inner bearing covers. Adjust
them so there is no free play in the taper bearing, and the bearing turns freely. Tighten them
against each other to save this adjustment.
3. The gap of the taper sliding plate is too wide. Adjust the bolt tension.
4. The chuck is loose. Tighten the chuck.
5. The drill bit or cutter is dull. Sharpen or replace it. Use cutting uid to preserve tool life.
6. The workpiece is not held rmly. Check the clamps or vise you are using, and assure that the
workpiece cannot move.
The micro feed does not work smoothly
1. The clutch may be loose. Check this and tighten if necessary.
2. The worm or worm shaft may be worn. Check these and replace if necessary.
3. The handwheel xed screw may be loose. Check it and tighten if necessary.
The workpiece is not machined accurately
1. A heavy workpiece may be out of balance. Check to see that heavy workpieces are held in
balance.
Out of balance pieces may shift when being machined.
2. A hammer has been used on the workpiece. Never strike the workpiece with a hammer.
3. The table may not be level. Check the table with a spirit level to be sure it is level both side to
side and front to back.
4. The machine may not be stable in the oor. Check to be sure the machine is rmly mounted to
the oor.