Free Drive Belts - Bills Blog

[Gary Dillard]

Originally Posted by Raul

I ordered the 5mm HTD belts and aluminum sprockets. I was expecting to get sprockets that had the rims on them as the picture in the catalog showed. Instead, I received ones with no rims. I went through the catalog again to make sure I ordered the proper part number and did not see any mention of rim vs. rimless options. Did anyone else have a similar experience?
If you were able to get the ones with rims, please let me know how you did it.

Hi Raul; I hunted through the catalogs and I agree it is pretty confusing. It appears to me that the HTD belts do not come with a flange; If you look at the figures for the GT2 sprockets they call out a type "A" on the top of the picture for unflanged and type "AF" on the bottom of the picture where the flange is shown. In the HTD picture it shows the same flange on the bottom but doesn't call out a different type; in the type columns for the HTD sprockets I don't see any types with an "F" suffix.

[Jared Russell]

Raul,

Please let us know what you hear from Gates. I would love to use the belting donation this season, and would prefer to use the HTD profile (better interoperability with other manufacturers' parts) over the proprietary GT2 profile - but if Gates doesn't produce (aluminum) HTD pulleys with flanges, I will need to find another plan. I don't trust a non-flanged pulley for many/any uses in FRC.

Jared

[Ed Sparks]

I ordered some P22-5M-15AL (5mm pitch, 15mm wide, HTD) pulleys last year and they were as expected (flanged on both sides, minimum plain bore MPB, hubbed aluminum).

I have our order in for this year for the same series of pulleys and will report back on what actually ships.

The data for this series of pulleys is found on page 207 of the catalog.

[Raul]

Originally Posted by Ed Sparks

I ordered some P22-5M-15AL (5mm pitch, 15mm wide, HTD) pulleys last year and they were as expected (flanged on both sides, minimum plain bore MPB, hubbed aluminum).

I have our order in for this year for the same series of pulleys and will report back on what actually ships.

The data for this series of pulleys is found on page 207 of the catalog.

I ordered the 9mm wide ones - that may be the difference. I just need to call them next week to determine if the 9mm are available with flanges.

[Raul]

OK, I exchanged some emails with the Gates rep. He said that for Aluminum HTD sprockets with 5mm pitch and belt width of 9mm or 15mm, any sprocket with up to 34 teeth will come with flanges and any sprocket with more than 34 teeth with come without flanges. These are the only options.