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Duo-Safety: Roof Ladder Rung, Aluminum

Duo-Safety: Roof Ladder Rung, Aluminum

Duo-Safety: Roof Ladder Rung, Aluminum

Duo-Safety: Roof Ladder Rung, Aluminum

$14.39
Product Code:
W-RA-1

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Aluminum Replacement Roof Ladder Rung

All rungs are 1-1/4" diameter by .065" wall thickness. (Standard Rung), unless your section width is wider than 24". In this case, you probably have heavy rungs - 1-1/4" diameter by .105 wall thickness.

Rung Replacement: It is the recommendation from the factory that all rungs be replaced when any rung shows signs of worn/smooth serration's or if any rung is dented, worn through or damaged in any manner. 

  • All replacement rungs are supplied 24" - standard .065 wall.
  • To remove any welded rung from the rail or plate, you must use a rung reamer tool.
  • There is no need to replace the rung plates unless they are damaged.

The reamer tool pilots itself in the rung hole, and cuts only the old rung away, thereby leaving the proper size hole for the new rung to be welded in place.  If Duo Safety's standard reamer tool will not fit inside your rung - be sure the ladder is a Duo-Safety Ladder and check the width of the section.  If the section width is over 24" wide - you have heavy rungs in that section.  Heavy rungs are supplied to meet the N.F.P.A. load rating in all sections wider than 24" wide. In these cases you must order Duo Safety's Heavy Rung Reamer Tool and heavy rungs for replacements.

The reamer tool is powered by a 1/2" drill. (not included)
1.    Insert in damaged rung.
2.    Start drill and use very slight pressure to start the cut.
3.    Cut through the weld and inner plate crimp to remove the old rung.
4.    Repeat the process on other rail/plate. (Remove all debris)
5.    Slide new rung through both rails and mark for length and cut same with hack saw.
6.    Hold rung flush and reweld the joint. (Duo Safety suggests Heli-arch/ wire feed)
7.    If you have replaced more than 3 rungs per section, Duo Safety suggests you order and use Duo Safety's hand rung expander tool to expand the rung to the inner plates. (Not used on heavy rungs or less than 3 rungs per section.)
 
Duo-Safety Ladder Corp. ladders all depend 95% on the welded rung joints to hold all ladders together. The minimum yield of the welded joint is 8,000 P.S.I.
 
The expansion process on the inner plates is a 5% back up system to help protect the weld joint from flexing and cracking.
 
Thus- if you only replace a few rungs per section - you do not need the expander tool. But if you replace more than 3 rungs per section, it is suggested you use the expander tool.
 
RUNG EXPANDER KIT:
 
For field use to replace rungs in any Duo-Safety aluminum ladders, please order and use the Duo Safety rung expander kit if you are replacing more than three rungs in any one section.

The rung expander kit consists of:‚Äč 1. Hand rung expander tool. 2. Rung reamer tool. 3. Instruction sheet.

You remove the damaged rung with the rung reamer tool and your 1/2" drill motor. This tool cuts the old rung away from the ladder rail and inner plate assembly and leaves the proper size finished hole to be able to re-weld the new rung into the rail. (Duo Safety suggests Heli-arch welding). You then finish the job with the hand rung expander to expand the rung tight on the inner plate assembly (see instructions with kit).
 
There are two plans available for use of the Rung Expander Kit (rung expander tool & rung reamer tool) or Rung Reamer Tool only. (1) Loan Plan - the rung expander kit or rung reamer tool only is shipped on memorandum billing - a credit is issued upon its return. The only charge is for shipping. (2) Purchase Plan - the rung expander kit or rung reamer tool only may be purchased outright
 


Special discounts may apply for high volume sales. Contact our Bids & Quotes department for more information.