end of the pipe. Apply slight pressure to the hand-
wheel to feed the reamer into pipe to remove the
burr as desired.
7. Remove foot from the foot switch.
8. Move the REV/OFF/FOR Switch to the OFF position.
9. Retract the reamer by releasing latch and sliding the
reamer away from pipe until the latch engages.
10. Move reamer up away from the operator.
Threading Pipe
Due to differing pipe characteristics, a test thread should
always be performed before the first thread of the day or
when changing pipe size, schedule or material.
1. Lower the die head into the threading position. Confirm
that the dies are correct for the pipe being threaded and
properly set. See the
Die Head Set-Up and Use
section
for information on changing and adjusting dies.
2. If needed, chose a correct operating speed for the
application. See
Changing operating Speeds
section.
3. Move the REV/OFF/FOR Switch to the FOR position.
4. With both hands, grasp the carriage handwheel.
5. Depress the foot switch.
6. Confirm cutting oil flow through the die head. Current
535 Threading Machines use through head oiling.
Machines made prior to 1996 have an oil spout which
must be swung to the down position to flood dies
with oil.
Figure 23 – Threading Pipe
7. Turn carriage handwheel to move the die head to
the end of pipe. Apply slight force to the handwheel to
start the die head onto the pipe. Once the die head
starts threading, no more force is required on the
carriage handwheel.
999-998-086.10_REV. C
15
535 Manual Chuck/535 Auto Chuck Threading Machines
8. Keep your hands away from the rotating pipe. Make
sure the carriage does not hit the machine. When the
thread is complete, open the die head (if the die head
does not open automatically). Do not run machine in
Reverse (REV) with dies engaged.
9. Remove foot from the foot switch.
10. Move the REV/OFF/FOR Switch to the OFF posi-
tion.
11. Turn the carriage handwheel to move the die head
past the end of the pipe. Raise the die head into
position up away from the operator.
12. Remove the pipe from the machine and inspect the
thread. Do not use the machine to tighten or loosen fit-
tings on the thread.
Threading Bar Stock/Bolt Threading
Bolt threading is similar to the pipe threading process. The
stock diameter should never exceed the thread major diam-
eter.
When cutting bolt threads, the correct dies and die head
must be used. Bolt threads may be cut as long as needed,
but make sure the carriage does not hit the machine. If long
threads are required:
1. At the end of carriage travel, leave the diehead closed,
remove foot from the foot switch and move the REV/ -
OFF/ FOR Switch to the OFF position.
2.
For Manual Chuck machines:
Open the chuck and
move the carriage and workpiece to the end of the
machine. Re-chuck the rod and continue threading.
3.
For Auto Chuck machines:
Move the REV/OFF/FOR
Switch in the REV position and tap the foot switch to
release the workpiece. Slide the carriage and work-
piece to the end of the machine. Re-chuck the rod and
continue threading.
Left Hand Threading
Cutting left hand threads is similar to the right hand thread-
ing process. To cut left hand threads left hand threading kit,
left hand die heads and dies are required. For reaming
with the machine in reverse a Model E-863 Reamer Cone
(cat# 46660) is required.
1.
For 535 Manual Chuck machines:
Install the left
hand threading kit (Cat# 96517) as per the kit instruc-
tions to allow oil flow in REV. (535 Threading Machines
made prior to 2001 do not require the kit).
2.
For 535 Auto Chuck machines:
Install the 535
Automatic Reversing Valve Kit (Cat# 12138) as per kit
instructions to allow oil flow in REV. The kit includes a
selector for LH or RH oil flow.
See Figure 24
.
