Controls & Components - Grizzly T25937 Owner's Manual

Controls &
Components
To reduce your risk of
serious injury, read this
entire
using machine.
Refer to Figures 2–3 and the following descrip-
tions to become familiar with the basic controls
and components of this machine. Understanding
these items and how they work will help you
understand the rest of the manual and stay safe
when operating this machine.
Table Controls and Components
E
Figure 2. Table controls and components.
A. Backlash Adjustment Lever & Lock: When
the worm gear and handwheel are disen-
gaged, these allow the operator to turn the
table by hand without using the handwheel.
The backlash lever also allows adjustment
of the backlash between the worm gear and
worm wheel. Loosen the lock, then rotate the
lever to adjust the backlash. To disengage
the gear and wheel, rotate the lever clock-
wise until they disengage.
Note: Backlash lever features a set screw
that controls backlash adjustment.
B. Vernier Scale: Has graduations that derive
20" (20 arc seconds).
-4-
manual BEFORE
A
B
C
D
C. Handwheel Scale: Has a resolution of 2'
(2 arc minutes) and displays whole degree
marks. A full rotation of the handwheel turns
the rotary table 4°.
D. Rotary Table Locks (1 of 2): Lock the table/
chuck in place. This reduces the stress on
the worm and worm gear interface, and helps
ensure the table does not change position
during heavy machining operations. When
cutting circular slots, a slight drag can be
applied with the table lock to increase preload
and prevent chatter caused by any backlash
in the worm gear.
E. Degree Scale: Displays a quick reference
for table positioning. It is graduated in whole
degrees.
Tailstock Controls and Components
G
F
K
J
Figure 3. Tailstock controls and components.
F. Dead Center: Used in combination with rota-
ry table and chuck to support long, slender
workpieces.
G. Tailstock Body: Houses dead center.
Mounts to mill table using T-bolts.
H. Adjustment Knob: Moves dead center for-
ward and backward in tailstock body.
I. Height Adjustment Bolts: Allow tailstock
body to be adjusted vertically.
J. Dead Center Lock Screw: Secures position
of dead center.
K. Dead Center Guide Screw: Prevents dead
center from spinning inside tailstock. Also,
helps secure adjustment knob setting.
Model T25937 (Mfd. Since 3/16)
H
I