Smithy Midas 1220 XL - Manual (Page 29)

Setting up Your MI-1220 XL
The Midas 1220 XL comes with all major components assembled, but it is not ready to
use right out of the crate. Do not start the motor until you correct the positions of the
cross slide and leadscrew handwheels (Figure 5.1). We reversed these handles at our
warehouse to protect them during shipment. A drop or two of oil on the shafts will help
the handles slide on. Starting the motor with these handles in their shipping positions will
damage the machine's gear, bearings, and handles. You must also install the tailstock
handwheel, two drill-press handles, millhead lock handle and millhead height adjustment
handle.
Setting Lathe and Mill Speeds
Changing belts changes lathe speeds. The lower speeds use the two short belts. There is
only one position for the motor pulley to idler pulley belt. It goes on the smallest sheave
of the motor pulley (behind the largest sheave, Figure 6.11) and on the largest sheave of
the idler pulley. For 160 rpm, set the idler pulley to the lathe spindle pulley belt on the
smallest sheave of the idler pulley to the largest sheave of the spindle pulley (position C).
Move it in one sheave for 250 rpm (position D) and one more for 400 rpm (position E).
Table 6.1Setting Lathe speeds (RPM)
For the higher speeds, remove the two small belts and use the single long belt from the
motor pulley to the spindle pulley. For 630 rpm (position F), run the belt from the outside
sheave (closest to the door) on the motor pulley to the largest sheave on the spindle
pulley. Move it in one sheave for 1000 rpm (position G). For 1600 rpm (position H), run
it from the largest motor pulley sheave to the smallest spindle pulley sheave.
Set mill speeds using various combinations of the lathe belts and the belt on top of the
millhead. For 125 rpm, place the mill belt in position A and the lathe belts in position C
(Figure 6.12). For 160 rpm, place the mill belt in position B and the lathe belts in
position C, etc.
LOW HIGH
C D E F G H
X
C 160
D 250
E 400
F 630
G 1000
H 1600
6-8 Or Visit www.smithy.com
Uncrating and Setting Up the MI-1220 XL