It would be an interesting experiment. I have a trashed tb6374 I would try it with, if the bearings weren’t too much. Just need to clean up the bore but been busy with my working motors.
X105 CrMo17, Chromium Nitrogen, I’ll drop this here but it’s unobtainium (read : limited sizes available and super expensive).
Bearing “tech” is overrated given how we use them, be it wheels or motors. Just get the strongest possible ones you can find. And if you can apply corrosion protection (good grease for example), you’re good.
(Else no need to change your motor bearings if they are not damaged)
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For reference, it seems the motor bearings are in the range or series 698 and 688
Silicon Nitride is a perfect cheap enough heat / wear / shatter / corrosion proof solution miles ahead of steel and can be found.Chromium Nitrogen is as you’ve described, unobtanium.
https://www.amazon.com/logo-Bearing-Industry-Bearings-Diameter/dp/B085TDT7GT/
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I don’t buy the marketing in ceramic bearings, it proves not to be better than steel bearings in practice (at least in inline skating where we apply a lot of torsional forces). No benefits = extra price is not worth it.
Steel bearings seem also to hold longer over time with proper care.
Why not focus on the motor rigidity itself instead? I’m usually a fan of experiments but pretty sure ceramics in motor is a waste of your time and money 
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complete void of marketing hype, silicon nitride is not found in the skate industry… in fact the entire skate industry pushes the completely wrong type of ceramics - Zirconium Oxide (ZrO2), which although smooth, is brittle and will shatter under high temperature, pressure and load. Silicon Nitride is for heavy industry use and will not warp or wear. You will hardly see silicon nitride out there in the ceramic limelight (it’s not even white!).
Here’s some copy pasta from wikipedia
Silicon Nitride Si3N4 bearing and bearing parts
Silicon nitride bearings are both full ceramic bearings and ceramic hybrid bearings with balls in ceramics and races in steel. Silicon nitride ceramics have good shock resistance compared to other ceramics. Therefore, ball bearings made of silicon nitride ceramic are used in performance bearings. A representative example is use of silicon nitride bearings in the main engines of the NASA’s Space Shuttle.
Since silicon nitride ball bearings are harder than metal, this reduces contact with the bearing track. This results in 80% less friction, 3 to 10 times longer lifetime, 80% higher speed, 60% less weight, the ability to operate with lubrication starvation, higher corrosion resistance and higher operation temperature, as compared to traditional metal bearings. Silicon nitride balls weigh 79% less than tungsten carbide balls. Silicon nitride ball bearings can be found in high end automotive bearings, industrial bearings, wind turbines, motorsports, bicycles, rollerblades and skateboards. Silicon nitride bearings are especially useful in applications where corrosion, electric or magnetic fields prohibit the use of metals. For example, in tidal flow meters, where seawater attack is a problem, or in electric field seekers.
Si3N4 was first demonstrated as a superior bearing in 1972 but did not reach production until nearly 1990 because of challenges associated with reducing the cost. Since 1990, the cost has been reduced substantially as production volume has increased. Although Si3N4 bearings are still 2–5 times more expensive than the best steel bearings, their superior performance and life are justifying rapid adoption. Around 15–20 million Si3N4 bearing balls were produced in the U.S. in 1996 for machine tools and many other applications. Growth is estimated at 40% per year, but could be even higher if ceramic bearings are selected for consumer applications such as in-line skates and computer disk drives.
High-temperature material
Silicon nitride thruster. Left: Mounted in test stand. Right: Being tested with H2/O2 propellants
Silicon nitride has long been used in high-temperature applications. In particular, it was identified as one of the few monolithic ceramic materials capable of surviving the severe thermal shock and thermal gradients generated in hydrogen/oxygen rocket engines. To demonstrate this capability in a complex configuration, NASA scientists used advanced rapid prototyping technology to fabricate a one-inch-diameter, single-piece combustion chamber/nozzle (thruster) component. The thruster was hot-fire tested with hydrogen/oxygen propellant and survived five cycles including a 5-minute cycle to a 1320 °C material temperature.
In 2010 silicon nitride was used as the main material in the thrusters of the JAXA space probe
Metal working and cutting tools
The first major application of Si3N4 was abrasive and cutting tools. Bulk, monolithic silicon nitride is used as a material for cutting tools, due to its hardness, thermal stability, and resistance to wear. It is especially recommended for high speed machining of cast iron. Hot hardness, fracture toughness and thermal shock resistance mean that sintered silicon nitride can cut cast iron, hard steel and nickel based alloys with surface speeds up to 25 times quicker than those obtained with conventional materials such as tungsten carbide. The use of Si3N4 cutting tools has had a dramatic effect on manufacturing output. For example, face milling of gray cast iron with silicon nitride inserts doubled the cutting speed, increased tool life from one part to six parts per edge, and reduced the average cost of inserts by 50%, as compared to traditional tungsten carbide tools.
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Also seen on high end moto forks, hard as fuk
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@DerelictRobot pay my rent and I’ll be your person battle hardener… hard spooge at a moment’s notice…
I seriously think Mike/Rob broke 4-5 motors in the short amount of time I was in their area. Don’t think they’ve broken any since the hardening…
Fuck, I really want to see what an impact actually does to the fully potted motor combos. Going to need a runaway Klaus for testing.
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But I desire to seize ze means of production.
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It’s a long hard sticky road buddy. Rent in SEO is dirt cheap.
I have 8 monsters I need hardened in a month or two. I would pay for this. Yeah, this particular brand has never had a report of loose mags on a factory unit, but I’m not a factory person.
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I’m single till July 1st. And also after then, but I won’t be in San Diego.
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Mike, no. 
Pls explain
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I see this dog more than Ive seen my mum
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I don’t. She says haaaaay.
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I’m just mike being mike. Can’t keep a relationship together, but I can make a questionable build going for a fair bit.
On topic, I want to abuse them and have them battle hardened AF.
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Lemme know when the time comes, can ship them straight to my place from ordering. I’ll give ya the discount.
Also, buy some ass pads when you start pushing 50mph.
wanna break your ass. It hurts. Bangin got significantly more difficult for the time being.
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