# New Direct Drive Inrunner 65150

**URL:** https://foil.zone/t/new-direct-drive-inrunner-65150/3840
**Category:** Propulsion System (Motor, Gears)
**Created:** [February 22, 2019, 9:35am UTC](https://foil.zone/t/new-direct-drive-inrunner-65150/3840 "2019-02-22T09:35:28Z")
**Posts on this page:** 1
**Showing post:** 956

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### Author: ![michion](https://foil.zone/letter_avatar_proxy/v4/letter/m/ecccb3/32.png) [@michion](https://foil.zone/u/michion)
#### Post date: [May 9, 2020, 12:28am UTC](https://foil.zone/t/new-direct-drive-inrunner-65150/3840/956 "2020-05-09T00:28:59Z")

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Probably the bearings.

> [@Flipsky/ Maytech 65161 propellers for sale](https://foil.zone/t/flipsky-maytech-65161-propellers-for-sale/5475/5):
>
> The NSK bearings in this motor are not bad bearings but,and it’s a big but, the axial load ratings for this bearing are about 160 kg for 1 million revolutions. That’s how they rate them. Obviously 1 million revolutions is not much in an electric motor.  
> General rule is to divide the rating by 12 for longevity.  
> So our 6901 bearing is good for about 13 kg of axial load each.  
> But we still don’t have any radial loads so our bearings are toast!  
> I’m with you, definitely going to use a thrust bearing.

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