Spiral Balance sliding block and replacement parts

Quick Learner from New jersey
Jul 10, 2012 9:00 am

I am interested in purchasing 5 pair of spiral balances and would like to be sure that all parts will fit the windows I am working on. There are two parts that I am checking on: The sliding part at the end of the spiral that the window connects to and the block at the end of the tube. The channels in my windows are ~1-1/8 inches wide (depth?). As soon as I am sure your balances will fit my application, I will purchase and ask they be sent quickly / overnight. Thanks for your prompt response. John

A user submitted photo of window spiral balance
4 Replies
Tom from SWISCO
Jul 12, 2012 9:44 am
Good morning, and thank you for contacting us! I hope I can help you find the parts you're looking for.

The first part you mentioned--the sliding part that the window connects to--sounds like it might be a Pivot Lock Shoe. Take a look through that section and see if that's correct.

However, the second part's description--the block at the end of the tube--also may apply to the pivot shoe. I guess I'm not really sure what part that could be. Could you take a few pictures of it specifically for me to look at, and perhaps identify? Thank you!

As for the spiral balances, were you looking to help us find replacements for those, as well? If so, I'll need a bit more information. First, I'll need to know if the window is tilt or non tilt. Next, please give me the diameter and length of the metal tubes. Finally, I'll need to know the weight of the window sash itself. You can find this out by removing the sash from the window and placing it on a scale. Any common bathroom scale should do.
Professional from Princeton, NJ
Jul 16, 2012 6:59 am
Hi Tom:

Sorry for the late reply, and thanks for your detailed response.

Yes, the pivot lock shoe is the part I was referring to. The other part (a block that the color button end fits into. The spiral goes thru it.) I do not have a picture of, but is probably just a stabilizer piece to keep the balance from buckling and/or knocking when actuated. If it is not necessary, I guess it can be eliminated.

Will have to get back to you with all the information you requested (weights) as I already have the lengths. All diameters are 5/8". Also, all windows are tilt-type. I thought the color of the buttons were representative of the spring type / load.

Thanks again for your response.

Professional from Princeton, NJ
Jul 17, 2012 6:31 am

Hello again, Tom, OK, here's the poop;

All 5/8" Diameter, all with blue tips (I would have thought that the color had something to do with the load capacity)

2 pair 30" carrying 17 lb sashes

1 pair 28" carrying a 15 lb sash

1 pair 29" carrying a 17 lb sash

Also need all new 15-046 pivot Lock shoes (8 total) All windows are tilt-type.

I would also like to purchase a tensioning tool, unless one comes with the order.

Here's pics of the other block I was talking about that stabilizes the tube.

Thank you for your prompt attention and help.


A customer submitted photo of a spiral balance
Tom from SWISCO
Jul 17, 2012 8:43 am
Thanks for getting back to us, John! I recognize that block piece, now. That's what's known as a Single Hole Aligner. Please see our 26-139 and see if that will replace your own!

Now, for the balances. It sounds like you have our Series 600 spiral balances. Does that look about right? Please look at our S600-30 for the 30" tube, an S600-29 for the 29" tube, and finally the S600-28 for the 28" tube. I would keep the blue tip option for each one.

The color tips are, indeed, indicative of load capacity. The blue tip for the 30" balance can carry a window sash weight range of 12 through, and including, 31 pounds; the blue tip for the 29" balance can carry 12 through, and including, 31 pounds; and finally the blue tip for the 28" balance can carry 12 through, and including, 31 pounds. Just to give you an idea.

Please keep in mind that the weight range information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.

Finally, we do have a charging tool for this type of balance, but it is sold separately. Please see our 75-006 spiral balance charging tool for tilt windows.
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