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. Be sure to use cutting fluid to preserve tool life.
6.The workpiece is not held firmly. 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 fixed 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 floor. Check to be sure the machine is firmly mounted to the floor.
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