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Duct Rodder Sizing Chart

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Three Types of Rod


  COBRA®: Cobra is our highest quality rod, designed for heavy-duty
applications. It gets its extra strength from a unique construction process that ensures greater rigidity and strength, enabling it to endure the additional force required for long duct runs with multiple bends and sweeps. A braided wrap of reinforcing fibers increases its rigidity and helps bond the core with the outer plastic coating. The coating is made from a polymer blend for greater toughness and superior abrasion resistance to ensure extra long life. Includes one male and one female end fitting, and a tapered head.
Conduit Sizes* in (mm) Recommended Duct Rod Size in (mm)
1/2(13) 3/16 (5)
3/4(19) 3/16 (5)
1(25) 3/16,1/4(5,6)
1 1/4 (32) 3/16,1/4(5,6)
1 1/2 (38) 1/4,5/16(6,8)
2(51) 1/4,5/16(6,8)
2 1/2 (64) 1/4,5/16(6,8)
3(76) 6/16,7/16,9/16(8,11,13)
3 1/2 (89) 5/16,7/16,9/16(8,11,13)
4(102) 5/16,7/16,9/16(8,11,13)
5 (127) 7/16,9/16(11,13)
6 (152) 7/16,9/16(11,13)
8 (203) 9/16(13)
*Conduit sizes based on standard radius bends and should be considered minimums. A larger diameter rod than what is listed is not recommended. Please call 800-290-7752 for any assistance.
  PYTHON®: Our Python rod is best suited for less demanding
applications. It has strength properties similar to our Cobra rod, but is more flexible. Also, like the Cobra, it has a heavy-duty outer plastic coating to resist abrasions and reduce wear. Includes one male and one female end fitting, and a tapered head.
  MINI-COBRA®: Our Mini-Cobra rod includes our 3⁄16” (5 mm) and 1⁄4”
(6 mm) diameter rods used primarily for smaller duct sizes and shorter runs. The rod has the same flexibility and strength features of our Python rod and comes wound in 16” (406 mm) and 24” (610 mm) cages in 50’ (25 m) to 600’ (200 m) lengths. Includes two male end fittings and two tapered heads.
REPLACEMENT ROD: Replacement rod is available for all Condux Duct Rodders. Please contact our Net-Tech Sales Team to place your order. Have your existing duct rodder part number ready to ensure an accurate match. Replacement rod 3⁄16” (5 mm) to 1⁄4” (6 mm) comes with end fittings and tapered heads taped in a hand coil. The 5⁄16” (8 mm) to 9⁄16” (13 mm) rod comes with end fittings and a tapered head in a disposable replacement cage.
Duct Rod Specifications    
         
Duct Rod Dia. in (mm) Duct Rod Pull Strength lbs (N) Core O.D.** in (mm) Coating O.D.* in (mm) Min. Bending Radius in (mm)
3/16(5) 200 (890) .125(3.2) .187(4.8) 3(76)
1/4 (6) 350(1,557) .187(4.8) .250 (6.3) 5(127)
5/16(8) 950 (4,226) .237 (6.0) .312 (7.9) 7(178)
7/16(11) 950 (4,226) .300 (7.6) .437(11.1) 11 (280)
9/16(13) 1,400(6,227) .375 (9.5) .500(13.0) 11 (280)
         
**Core O.D. Tolerance ±.007" (.2 mm); *Coating O.D. Tolerance ±.015" (.4 mm).

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