6207 upper main bearing .. Question..

rk970

Seaman
Joined
Jul 15, 2013
Messages
71
I need to replace the upper main bearing on my 86 125hp. The bearing # is a NTN 6207 CT2 C4. It has a plastic bearing cage.. I can find 6207 C4 bearings but they all seem to have a steel bearing cage.. Is it ok to use an upper bearing with the steel bearing cage or should I spend 3x to for a bearing with the plastic bearing cage..
Robert
 

ondarvr

Supreme Mariner
Joined
Apr 6, 2005
Messages
11,527
You already have several different metals involved, it's not an issue.
 

rk970

Seaman
Joined
Jul 15, 2013
Messages
71
The three (908h4b, 2 from 1258x5a) crankshafts I have the upper bearing is a 6207 (C4 clearance) and all have plastic cages in them.. The upper bearing does not get a lot of lubrication. .
Any hoo.. Most 2cycle motorcycle builder use bearings with the glass reinforce plastic cages.. It may have to do with a steel bearing cage running with little lube generating excessive heat.
 
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