For Machines Mfg. Since 7/09 | S E R V I C E | EVS Toolroom Lathes |
Gib
Screw
Figure 129. One of two rear saddle gib screws.
Left Gib
Screw
Figure 130. One of two front saddle gib screws.
Right Gib Screw
Figure 131. One of two tailstock gib screws.
Half Nut Adjustment
The half nut mechanism can be tightened if it becomes loose from wear. The pressure exerted by the half nut is controlled by a gib similar to the one in the saddle, which is on Page 66. The half nut gib is adjusted with two set screws.
Tool Needed: | Qty |
Hex Wrench 3mm | ................................................. 1 |
To adjust the half nut:
1.Disengage the half nut.
2.Remove the thread dial.
3.Turn the two
Leadscrew
Half Nut
Adjustment Set
Screws
(Thread Dial
Removed)
Half Nut
Figure 132. Half nut gib adjustment.
4.Engage/disengage the half nut several times and notice how it feels (you may need to move the carriage handwheel slightly to get the half nut to close).
The half nut is correctly adjusted when it has a slight drag while opening and closing. The movement should not be too stiff or too sloppy.
5.Repeat Steps
6.
