Sealed bearings on deck spindles - Lawn Mower Forums : Lawnmower Reviews, Repair, Pricing and Discussion Forum
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post #1 of 7 (permalink) Old 08-20-2019, 09:49 PM Thread Starter
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Sealed bearings on deck spindles

Seen a post on YouTube where the a person removed a bearing from a spindle, it has a grease fitting but the bearings was sealed. Please look at this video, is it true.

https://youtu.be/d3eC2OIg85o
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post #2 of 7 (permalink) Old 08-21-2019, 01:26 PM
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Seen a post on YouTube where the a person removed a bearing from a spindle, it has a grease fitting but the bearings was sealed. Please look at this video, is it true.

https://youtu.be/d3eC2OIg85o
yes the grease fittings are mostly just for decoration, some spindles makers dont even bother putting them on it any more

if you want to look at it close you can pry off and pop out the plastic seal to expose the bearings so the grease fitting can lube them but to be honest its easier to just replace the $4 sealed bearings every 4-5 years
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post #3 of 7 (permalink) Old 12-22-2019, 10:18 AM
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The majority or the ball bearings in the spindles, and most of the belt idlers is a 6203 2 RS bearing 5/8" X 1 1/2".
Yeah they cost between $5 or $10 I got 17 yrs out of them on my machine, just replaced them this summer.
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post #4 of 7 (permalink) Old 12-25-2019, 08:20 AM
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Originally Posted by [email protected] View Post
Seen a post on YouTube where the a person removed a bearing from a spindle, it has a grease fitting but the bearings was sealed. Please look at this video, is it true.

https://youtu.be/d3eC2OIg85o
Hello--yep most time it true--I always grease all bearings once a year even [sealed ones] with a needle grease fitting on grease gun---sometime with metal seals on them drill a little hole and insert needle and grease,,I have NEVER had a bearing fail on anything

Even on Balder ele. motors I work on I see it all time --people bring them in get fixed bearing burned up and has grease fitting and theres grease everywhere except inside bearing---I take one seal off one side of bearing and install new ones then can grease.

I buy them 10 at time for $14 and just replace bearing for people--alot cheaper than whole idle pulley--I put on metal lathe cut rig off install new bearing and tack weld back on--works good.
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post #5 of 7 (permalink) Old 12-31-2019, 10:25 PM
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I had never greased the deck spindle bearings on my 2007 Cub Cadet. Needless to say, they finally gave out last summer. They were still intact, but they were loud as heck. I didn't realize how bad they were until I replaced them. The ones I replaced them with have grease fittings and they work. THat is how I initially filled them before putting them on the deck. I will be sure to grease the every spring going forward now. The mower is so much quieter now when I engage the deck than it used to be. I don't know how I put up with it.
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post #6 of 7 (permalink) Old 01-08-2020, 09:54 AM
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yes it's true....
I started buying, repairing and selling riding lawn mowers last year....I've replaced perhaps 14-16 spindle bearings on a variety of brands.....and all of them have been sealed. Many of the spindles had zerk fittings for greasing anyway....If they are sealed and used for typical residential purposes, they should last a long time. If you decide to cut in muddy conditions, and I've seen some mower decks and chassis' coated with mud, who knows??

I read somewhere one guy likes to filling up the spindle with grease even with sealed bearings to help dissipate any heat. He could possibly be right, but I'm not buying it...if a bearing is getting that hot, it's gonna self destruct anyway.
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post #7 of 7 (permalink) Old 01-14-2020, 07:17 PM
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This is the set that I ordered and installed on them and they were not pre-lubed. The zirks worked fine for lubing them.




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