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300 Power Drive
Pipe
No. 450/460
Tristand
Vise
Bolt (3)
Oiler
Universal
Drive
Shaft
Figure 22 – Threading with Nos. 141 and 161 Geared
Threaders using No. 840A Universal Drive
Shaft
7. Using socket wrench, tighten workholder clamp screw
(Figure 15) securely.
8. Slip square socket of No. 840A Universal Drive Shaft
over square end of threader drive shaft and tighten
two (2) set screws.
IMPORTANT! When properly positioned, sliding shank of
universal drive shaft should be approxi-
mately centered to allow movement in
either direction.
9. Position No. 418 Oiler directly under threader.
Threading Using Nos. 141 and 161
Geared Threaders with No. 840A
Universal Drive Shaft
1. Follow Steps 1 through 6 of Geared Threader Oper-
ating Instructions (Close-Coupled Method).
2. Turn REV/OFF/FOR switch to OFF position.
3. Loosen two (2) set screws and remove universal
drive shaft from threader.
4. 141 and 161 – Loosen jaw clamp screw (Figure 15)
and turn workholder to OPEN position.
5. Loosen chain vise and remove pipe.
NOTE! If, by accident, a RIDGID Geared Threader is
backed off too far and threaded barrel becomes
disengaged from workholder, the threader must
be removed from the Power Drive and be put on
a bench. Re-engage the threads carefully by
hand. Do not attempt this by power.
Chuck
Handwheel
Centering
Device
Stand
Foot Switch
Ridge Tool Company
No. 819 Nipple Chuck
The RIDGID No. 819 Nipple Chuck is designed for hold-
ing short and close nipples or studs for threading. The
No. 300 Power Drive should be equipped with 2 (two)
support bars, No. 311A Carriage and self-opening or
quick-opening die head.
Capacity:
/
" to 2" Standard Pipe (NPT)
1
8
1
/
" to 2" Bolts or Studs UNC or UNF
4
Pipe Adapters
/
/
/
/
1
",
1
",
3
",
1
",
8
4
8
2
3
/
", 1", 1
1
/
", 1
1
/
"
4
4
2
Short or Close Nipple
Threading Procedure
1. Grip pipe in machine chuck. Thread and ream one
end and cut nipple to desired length.
2. Turn directional switch to OFF position and remove
pipe.
3. Place nipple chuck body (Figure 23) in Power Drive
chuck, gripping jaw grooves. Tighten chuck with
snap spin of handwheel.
4. Position insert (Figure 23) with small end toward
chuck body for
1
/
" to
8
chuck body for 1" pipe; no insert required for 1-
pipe and up.
Nipple Chuck
Body
Figure 23 – Installing Nipple Chuck Body and Insert
5. Select proper size nipple chuck adapter and screw
into nipple chuck (Figure 24) by hand. Tighten with
wrench provided with nipple chuck.
Stud Adapters
/
" to 2" UNC
1
4
1
/
" to 1
1
/
" UNF
4
2
3
/
" pipe; large end toward
4
1
/
Insert
19
"
4
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