4 Installation
4.4 Tailstock Column Installation
4-14
162068-1CD
162068-1CD
MH-SERIES
POSITIONER
4.4.3
Leveling the Tailstock
4.4.3.1
Type I Leveling Procedures
The tailstock must be leveled in two directions, axially and cross-axially.
Since it only takes three points to define a plane, use only three of the four
leveling bolts to level the system. It is important to consistently use the
same three leveling bolts throughout each process. The fourth leveling
bolt will be used as an anchor only.
Before proceeding, make sure that the tailstock is in the proper place.
Make sure a leveling bolt, lock-nut, and leveling shim is installed in each
column base hole.
Fig. 4-24: Leveling the Tailstock - Type I
To level the tailstock assembly axially, proceed as follows:
1. Place a level on top of the tailstock column in the axial direction.
2. Use the leveling bolts A, B, and C to adjust the axial level. Adjust bolts
A and B equally.
To level the tailstock assembly cross-axially, proceed as follows:
1. Place a level on top of the tailstock in the cross-axial direction.
2. Use the same three leveling bolts used above and adjust them until
the level is balanced, adjusting B and C equally.
3. Repeat the axial and cross-axial leveling steps until level readings are
achieved both ways
4. Drive the fourth leveling bolt down to the leveling shim.
5. Check level axially and cross-axially again. When level, tighten the
anchoring system (customer-supplied) to the specified torque.
6. Tighten the four lock-nuts to the column base.
AXIAL
CROSS-AXIAL
DRIVE ASSEMBLY
A
B
C
LEVELING SHIM
ANCHOR
(CUSTOMER
SUPPLIED)
LEVELING BOLT
LOCK-NUT
HEADSTOCK
RISER
COLUMN BASE
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