441 Combustion Fan Rebuild? Bearings?

[ctbale]

I have a 441 I am about to take apart. High pitch from the combustion fan. Can the bearings on these be replaced? I tried searching but only came up with info in the 422s
thanks!

[hawkins111]

Lots of info on the site. The thread titled "Monitor 441 Heater" post # 335 by Adnadeau has a great picture break down of the 441 motor and blower assy. Get good bearings if you overhaul the motor. Cheap ones off EBAY are not worth the effort, as you will be doing it again in a year or two. Left hand threads on the fan shaft.

[ctbale]

NSK made in japan look good?

https://www.ebay.com/itm/1-PCS-NSK-608-ZZ-Deep-Groove-Metal-Shield-Ball-Bearing-608ZZ-Made-In-Japan-New/333220300703?hash=item4d957a479f:g:SSAAAOSwe5tc9KYw

[adnadeau]

Bearing assemblies have an ABEC rating. A rating of 1 is just average; 3 is better. Check out McMaster-Carr 6661K12 under Precision Ball Bearings.

[ctbale]

Those 6661K12 look really good.

got 4 of the NSK coming. cant beat $5/ea delivered for a top shelf bearing.






http://www.nsk.com/common/data/ctrgPdf/e126h.pdf