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MST 120011 bearings width - Volante2016 - 04-18-2017

Hello, can anybody tell me wich is the width of MST 120011 ball bearing ? What does the dimension 5x11 mean? Diameter x width? or inner/outer diameter?
I bought the MST kpi knuckles for the sakura d4 rwd and the smaller bearing (outer) is too short... the wheel (hex) is moving (left-right).


RE: MST 120011 bearings width - littlemonsta - 04-18-2017

(04-18-2017, 08:30 AM)Volante2016 Wrote:  Hello, can anybody tell me wich is the width of MST 120011 ball bearing ? What does the dimension 5x11 mean? Diameter x width? or inner/outer diameter?
I bought the MST kpi knuckles for the sakura d4 rwd and the smaller bearing (outer) is too short... the wheel (hex) is moving (left-right).

It should 5x11x4. I'm using yeah racing knuckles. I use a 5x11x3 and it is still ok. It's a copy of MST. Should be the same. Interim while waiting for the bearings you can use a plastic wire wrappers. Stretch them to fit the bearing then lightly burn it to tighten it.

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RE: MST 120011 bearings width - Volante2016 - 04-19-2017

I don't understand what to do with the wire wrapper... The wheel is moving along the x axes. Meaning in and out (or left/right). Not front/back. The problem seems to be in the width of the bearing. The pin that goes into the axle doesn't touch the bearing. It leaves a gap... I will upload photos later...

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RE: MST 120011 bearings width - littlemonsta - 04-19-2017

you need to increase the diameter of current bearing. The d4 bearing is smaller by 1mm. I will show you how I fixed this after work.

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MST 120011 bearings width - littlemonsta - 04-19-2017

[attachment=3732]

This is what I use. It is similar to the plastic on wire ends.

[attachment=3733]

Stretch it to size of bearings

[attachment=3734]

Cover the bearings . And use heat from lighter to tighten the plastic again.

[attachment=3735]

If you don't have that you can try electrical tape


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RE: MST 120011 bearings width - Volante2016 - 04-19-2017

Very nice tutorial! But the problem for me is not the diameter. It's the width (height) of the bearing...

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RE: MST 120011 bearings width - littlemonsta - 04-20-2017

(04-19-2017, 02:41 PM)Volante2016 Wrote:  Very nice tutorial! But the problem for me is not the diameter. It's the width (height) of the bearing...

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Can you upload your photo ?

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MST 120011 bearings width - Volante2016 - 04-20-2017

Ok. Sorry for the delay. I was busy with work...

As I found out, the mst bearing is 5x11x5 while the original D4 is 5x10x3... (!). I am wondering why people say it would fit... :(

You can see how deep it sits... I just ordered the original mst...

By the way I am very happy with my new ball bearing tool I bought from eBay![Image: 74797ff5308d6700a3060721c96fbaf2.jpg][Image: 76086b3901e8ab945913312ad376c46e.jpg]

[Image: aa135fadc0826afb61700fc056e8f5b8.jpg]

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RE: MST 120011 bearings width - littlemonsta - 04-20-2017

ok understand what you mean. you can still try what i did. If the diameter big enough it will hold the bearing from slipping in and out. Or you can just wait for the bearings to come.


MST 120011 bearings width - Volante2016 - 04-20-2017

Thanks again! I don't have electronics yet, so I don't mind waiting for the bearings...

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