Smithy GN1300 - Manual (Page 97)

4. Slowly tighten the four adjusting screws on the brass nut, one at a time, until a slight
drag is felt while turning the crossfeed handle.
5. Install the rear crossfeed support and tighten the locking bolt for the brass nut.
6. Recheck the backlash on the crossfeed.
If you find that the four adjusting screws are not staying in place, you can use a small
amount of a thread-locking compound to keep the screws tight.
Granite Series Leadscrew Handwheel Fabrication
& Installation (Earlier Machines)
Purchase part # G91027 or use the instructions below.
Installation of a handwheel to the right end of the leadscrew will allow a more precise
lateral feeding of the carriage travel than is now possible using the carriage feed hand-
wheel. The following is a simple handwheel plan that can be made using the Granite
machine. The wheel portion can be made from a piece of mild steel, aluminum, or cast
iron. The handle portion should be made of mild steel.
Hole is drilled & tapped to match
the thread of the handle that was
selected. The handle may be
fabricated from scratch or
purchased already made.
Center hole drilled 27/64
and threaded M12 x 1.25
Handwheel dimension - 85mm
Diameter - 9mm
9mm long & threaded to match the
small hole in the handwheel
Diameter & length of the handle
your preference
Screw the handwheel on the end of
the leadscrew. Install a bolt &
fender washer into the 5/16 x 24
hole that is in the end of the
leadscrew to hold the handwheel
in place. Screw the handle into the
handwheel & tighten into place.
Figure 12.7 Crossfeed Table Rear View Cross Section
Figure 12.8 Handwheel Fabrication & Installation
Granite 1300 Series Operator’s Manual
12-11 For Assistance: Call Toll Free 1-800-476-4849
Saddle
Brass Nut
Adjusting Screws
Table view from rear of
machine.