Smithy GN1300 - Manual (Page 79)

Overview
This section of your manual covers threading operations on your Granite 1300
series lathe-mill-drill. This section will build the information presented in
chapters 8 and 9. If you have not read these sections, please do so before
continuing.
Leadscrew Safety Clutch Adjustment
Before begining your threading operation, note the leadscrew safety clutch may
need to be adjusted.
The lead screw safety clutch is functioning in the threading mode. It will slip to
prevent damage to the machine apron if the carriage is accidentally run into the
head of the machine.
N O T E : The clutch will not prevent damage if the carriage or cross-slide table
pass the end of their mechanical limits
The clutch assembly is located inside the lathe pulley box. It is a round flat nub
in the change gear shaft with the “D” gear. There are six setscrews above the
springs and ball bearings located radially around the clutch in front of the gear.
The setscrews screw inward toward the center of the clutch.
10 Threading
General Safety Operations
For your own safety and the safety of those around you, follow
the rules below and those listed in chapter 2 of this manual.
Never leave or walk away from an operating machine.
Do not change motor rotation direction until the motor and
spindle are fully stopped. Changing directions while the motor
is running can damage the motor.
CAUTION
CAUTION
DANGER
10-1 For Assistance: Call Toll Free 1-800-476-4849