Grizzly G4000 Lathe User Manual


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Offsetting Tailstock
I]ZiV^ahidX`XVcWZd[[hZiha^\]ian[gdbi]Zhe^c"
YaZXZciZga^cZidXjih]VaadliVeZgh^cVldg`e^ZXZ
bdjciZYWZilZZcXZciZgh#L]Zc i]ZiV^ahidX` ^h
d[[hZiidlVgYi]ZdeZgVidg!i]ZbVX]^cZYldg`e^ZXZ
l^aaWZhbVaaZgVii]ZiV^ahidX`ZcY#8dckZghZan!^[
i]ZiV^ahidX`^hd[[hZiVlVn[gdbi]ZdeZgVidg!i]Z
iVeZgl^aaWZhbVaaZgVii]Zhe^cYaZZcY#
Tools Needed Qty
=ZmLgZcX])bb############################################## &
LgZcX]&)bb################################################### &
To set the tailstock offset:
1. AddhZc i]Z iV^ahidX` adX` cji hZZ Figure
28#
2. 6aiZgcViZanaddhZcVcYi^\]iZci]ZildVY_jhi"
bZci hZi hXgZlh dcZ dc Z^i]Zg h^YZ d[ i]Z
iV^ahidX`jci^ai]Z YZh^gZYd[[hZi^h^cY^XViZY
dc i]Z d[[hZi hXVaZ! i]Zc gZi^\]iZc i]Z adX`
cji#
3. Id gZijgc i]Z iV^ahidX` WVX` id i]Z dg^\^cVa
edh^i^dc! gZeZVi Step 2 jci^a i]Z XZciZgZY
edh^i^dc^hgZVX]ZY#
Note: For purposes of accuracy, you may
want to perform the Aligning Tailstock pro-
cedure on this pageafter offset adjustments
have been made.
Aligning Tailstock
I]ZiV^ahidX`lVhVa^\cZYl^i]i]Zhe^cYaZVii]Z
[VXidgn# =dlZkZg! lZ gZXdbbZcY i]Vi ndj iV`Z
i]Z i^bZ id ZchjgZ i]Vi i]Z iV^ahidX` ^h Va^\cZY
idndjgdlcYZh^gZYidaZgVcXZh!ZheZX^Vaan^[ndj
]VkZbVYZiV^ahidX`d[[hZiVY_jhibZcih#
To align the tailstock with the spindle:
1. JhZVegZX^h^dcaZkZaidbV`ZhjgZi]ZaVi]Z
WZYlVn ^h ZmVXian aZkZa [gdb h^YZ"id"h^YZ
VcY [gdci"id"WVX`# >[ cZXZhhVgn! jhZ h]^bh
WZilZZci]ZaVi]ZVcYX]^eeVc#
2. 8ZciZgYg^aaV+adc\e^ZXZd[gdjcYWVghidX`
dcWdi]ZcYh#HZi^iVh^YZ[dgjhZ^cStep 5#
Note: If the tailstock is out of alignment by
only a few thousands of an inch, the center
drill will find the center point during the drilling
process. If the tailstock appears grossly out
of alignment, adjust the tailstock offset until it
appears to be centered.
3. BV`ZVYZVYXZciZgWnijgc^c\Vh]djaYZgdc
V h^b^aVg e^ZXZ d[ gdjcY hidX`! i]Zc [a^e i]Z
e^ZXZdkZg^ci]ZX]jX`VcYijgcV+%ed^ci
hZZFigure 29#
Note: As long as the fabricated dead center
remains in the chuck, the point of this center
will remain true to the spindle center line.
However, if it is removed, the point will have
to be re-finished before using it for this proce-
dure again.
Figure 29.I]Z[VWg^XViZYYZVYXZciZg#
Figure 28.IV^ahidX`d[[hZii^c\Xdcigdah#
AdX`Cji
D[[hZi
HXVaZ
6Y_jhibZci
HZiHXgZl
&d['
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