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Home > Ordnance Documents and other related manuals > > Figure 3. Tapers Used for Milling Machines.
Spindle.
Size Designation.

Milling Machine Operations
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
FIGURE 3.
TAPERS USED FOR MILLING MACHINES.
Always tighten the locknuts after the  overarm is positioned.
On some
milling machines, the coolant supply nozzle is fastened to the overarm.  The
nozzle can be mounted with a split clamp to the overarm after the arbor
support has been placed in position.
(8)
Arbor Support.  The arbor support is a casting containing a bearing
which aligns the outer end of the arbor with the spindle.
This helps to
keep the arbor from springing during cutting operations.  Two types of arbor
supports are commonly used.
One type has a small diameter bearing hole,
usually 1-inch maximum in diameter.
The other type has a large diameter
bearing hole, usually up to 2 3/4 inches.
An oil reservoir in the arbor
support keeps the bearing surfaces lubricated.
An arbor support can be
clamped
8






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