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Re: Bearing application
Re: Bearing application -- RTC RACING	Post Reply	Top of thread	Forum

Posted by: kelly_bramble ® Administrator 08/10/2005, 08:25:18 Author Profile Mail author Edit

I don't know anything specifically about the 6205 2RS bearing, however proper bearing installation is often over looked by mechanics. If the bearing is a sealed type, then inspect the bearing for proper rotation in the direction of operation. When installing the bearing, be sure that alignment is correct and that the retaining mechanism/bracket installs correctly and that alignment isn't lost. If the bearing is an open taper, barrel type, and you are required to apply the bearing grease, this is a great opportunity to reduce rolling friction. Taper type bearings, as used in automotive front axle / spindle applications, require pre-greasing. This is normally done at the factory with a special machine, which forces grease through the bearing and completely greases the bearing. At home, there is a technique where grease is applied to the palm of your hand, and the bearing is slowly and systematically greased by forcing the grease up through the crevices of the bearing with a scraping motion of the bearing on the palm of the hand to the grease. With all this said, you can reduce the friction in the bearing by investigating different bearing greases appropriate to your application. A lower viscosity bearing grease should reduce rolling friction. Keep in mind that the bearing will likely require replacement sooner.

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Re: Bearing application
Re: Re: Bearing application -- kelly_bramble	Post Reply	Top of thread	Forum

Posted by: kelly_bramble ® 08/10/2005, 08:32:30 Author Profile Mail author Edit

Another possibility, and I suspect this is what your realy after, is to identify a replacement bearing with less friction. The bearing could have less friction by design, or becuase the bearing has less friction producing contact surfaces. Sometimes lighter-duty interchangable bearings are a good short run application replacment. Not to go overboard, however bearing rolling friction could be verified with realy simple test fixture. You could also use this rolling-friction test fixture to verify you are actualy installing the lowest friction bearing from a lot of bearings.

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Re: Bearing application
Re: Bearing application -- RTC RACING	Post Reply	Top of thread	Forum

Posted by: randykimball ® 08/06/2005, 11:56:01 Author Profile Mail author Edit

First things first, are you having bearing failure problems? The 6205 doubled sealed is a good light duty bearing (if it is comming from a good manufacturer and not some cheap rip-off). If there is room for a wider bearing you can replace it with a double wide (two rolls of balls) bearing of the same OD and ID, but some wider. This would improve the load rating, IF you have a load bearing problem (I doubt you do). The 6205 is a ball bearing package, you could go to a roller bearing package to reduce friction but would loose side to side control, which means you would need to add a thrust bearing pair somewhere... then we have added bearings and friction back into the equation. .... My experience would lead me to use what the manufactures have proven to work in the best models and take advantage of their research and development man hours spent. -randykimball- moderator The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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Re: Bearing application
Re: Re: Bearing application -- randykimball	Post Reply	Top of thread	Forum

Posted by: RTC RACING ® 08/06/2005, 13:32:01 Author Profile Mail author Edit

I'm not having any bearing failure, just looking to reduce resistance in the drive system and suspension. Is the NTN bearing a good way to go? I see that they make bearings specifically for snowmobiles and low temperatures.

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Re: Bearing application
Re: Re: Bearing application -- RTC RACING	Post Reply	Top of thread	Forum

Posted by: randykimball ® 08/06/2005, 17:33:09 Author Profile Mail author Edit

Let us give others a chance to chime in, the value here is that we have the inputs from many kinds of professionals ... it is quite a brain trust! I really doubt you are going to gain any significant improvements over the NTN's you are using. BUT, there are those aboard that know more on this subject. -randykimball- The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Sun, Aug 07, 2005, 22:35:34

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Re: Bearing application
Re: Re: Bearing application -- randykimball	Post Reply	Top of thread	Forum

Posted by: RTC RACING ® 08/06/2005, 21:24:08 Author Profile Mail author Edit

Thanks for your input and time Randy. Jay

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Re: Bearing application
Re: Re: Bearing application -- RTC RACING	Post Reply	Top of thread	Forum

Posted by: Dale ® 08/11/2005, 02:18:48 Author Profile Mail author Edit

I'mm not sure on your size of bearing but recently i've discovered the use of ceramic baerings.....but......depends on how much u want to spend. They are very expensive. Im guessing around 100 to 150 dollars EACH. Bones

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