Specifications

Southwestern Industries, Inc.
ProtoTRAK SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
141
Caution!
If the scale is not long enough for the table, it will break when the machine is
traversed past the scale travel.
1. Install the M5 Base on the bracket. See Section 5.1.6.1, Figure 25.
Parts required: M250C sensor and included hardware
a) Put in pusher screws. These are the screws with the rounded ends.
b) Position base and install puller screws and spherical washer sets. Use the pusher
screws to square the M5 base to the running surface.
c) Adjust the puller screws so that the raised bumps on the front of the base are
parallel to the table.
Note: The drawing shows a bubble level used for this adjustment. Alternatively, you may use a
dial indicator set-up on the table.
2. Install the sensor on the M5 Base using the clamp screw. See Section 5.1.6.2,
Figure 26.
3. Load the sensor against the running surface (table or run bar) using the load screw.
The white lines on the side of the M5 base tell you when it is loaded correctly.
Note: You want to load the gage wheel against the running surface using the flexure of the M5
Base. Do not tighten the clamp screw fully until after loading the sensor.
7.7 X and Y Glass Scale Installation - Optional
The Acu-Rite Glass Scales are shipped with complete installation instructions including
illustrations. This section gives summary instructions for the installation of the glass scales
on knee mills. If more instructions are needed, please see the booklet provided with the
scales.
See Figure 29 in Section 5.
7.7.1 X Axis Scale Installation
Note: New Bridgeport machines have Acu-Rite scale mounting holes pre-drilled.
1. With the table centered, position the scale and readerhead to make sure that the scale is the
correct length. The readerhead mounting bracket is attached to the saddle and the scale is
attached to the table.
2. Mount the readerhead mounting bracket to the saddle. Snug the screws, but do not tighten
at this time, you will be making fine adjustments to the bracket’s position after the scale is
installed.