Atomically precise roller gearbearing - Revision history

Apm: Category:Far term target

2026-03-29T19:41:41Z

← Older revision		Revision as of 21:41, 29 March 2026
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	Adding a soft herringbone tooth trajectory can prevent rollers from sliding out despite compressive force. <br>		Adding a soft herringbone tooth trajectory can prevent rollers from sliding out despite compressive force. <br>
	In tapered roller gearbearings backlash can be elegantly brought to zero by applying some optimal axial pretension.		In tapered roller gearbearings backlash can be elegantly brought to zero by applying some optimal axial pretension.

			[[Category:Far term target]]

Apm: /* Shapecomplementary atomic teeth gearbearings */

2025-08-21T11:55:00Z

Shapecomplementary atomic teeth gearbearings

← Older revision		Revision as of 13:55, 21 August 2025
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	* For conical rollers rows or spirals are not an option as the teeth <br>continuously and slowly vary in width, a shape that atoms can't easily model at smallest scales.		* For conical rollers rows or spirals are not an option as the teeth <br>continuously and slowly vary in width, a shape that atoms can't easily model at smallest scales.

	Some inter-meshing gear pairs that could also be used as ~~gearberings~~ <br>		Some inter-meshing gear pairs that could also be used as gearbearings <br>
	have been atomistically modeled and theoretically simulated via [[molecular dynamics simulation]]s. <br>		have been atomistically modeled and theoretically simulated via [[molecular dynamics simulation]]s. <br>
	See e.g. the planetary gearbox on the page: [[Example crystolecules]]. <br>		See e.g. the planetary gearbox on the page: [[Example crystolecules]]. <br>

Apm: flip typo fix

2025-08-21T11:53:12Z

flip typo fix

← Older revision		Revision as of 13:53, 21 August 2025
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	* Cycloid gears have flank lower sliding speeds than evolvent gears and are known for their low friction properties.		* Cycloid gears have flank lower sliding speeds than evolvent gears and are known for their low friction properties.
	* The varying pressure angle of cycloid flanks is less problematic in the absence of tangential loads as present in gear-trains <br> helical tooth trajectories can further help there		* The varying pressure angle of cycloid flanks is less problematic in the absence of tangential loads as present in gear-trains <br> helical tooth trajectories can further help there
	* Full cycloid profile gears can be pressed together reducing backlash to zero by pre-tension. <br> ~~Evlovent~~ flanks need high pressure angles for that and incur more sliding speed		* Full cycloid profile gears can be pressed together reducing backlash to zero by pre-tension. <br> Evolvent flanks need high pressure angles for that and incur more sliding speed

	== Conductive roller gearbearings ==		== Conductive roller gearbearings ==

Apm: /* Sealing & dirt */

2025-08-21T11:46:14Z

Sealing & dirt

← Older revision		Revision as of 13:46, 21 August 2025
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	compartmentalizing space and thereby:		compartmentalizing space and thereby:
	* making a [[PPV]] possible and		* making a [[PPV]] possible and
	* leaving not a single stray gas molecule in.		* leaving not a single stray gas molecule in (excluding all stray gas molecules).
	----		----
	As for dirt from hard ionizing radiation splitting it off from AP surfaces:		As for dirt from hard ionizing radiation splitting it off from AP surfaces:

Apm: /* Lower friction at higher speeds */ some fixes

2025-08-21T11:43:32Z

Lower friction at higher speeds: some fixes

← Older revision		Revision as of 13:43, 21 August 2025
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	* contact area reduction only linear		* contact area reduction only linear

	At the cost of high design effort ~~going for~~ [[infinitesimal bearings]] reduces losses quite a bit. <br>		At the cost of high design effort choosing to use [[infinitesimal bearings]] reduces losses quite a bit. <br>
	Roller gearbearing based infinitesimal bearings will likely be much ~~preferrable~~ over sliding ~~infiniresimal~~ bearings. <br>		Roller gearbearing based infinitesimal bearings will likely be much preferable over sliding infinitesimal bearings. <br>
	Infinitesimal bearings need rollers to distribute speeds equally anyway.		Infinitesimal bearings need rollers to distribute speeds equally anyway.

Apm: /* Superlubricating toothflank gearbearings */

2025-08-21T11:41:52Z

Superlubricating toothflank gearbearings

← Older revision		Revision as of 13:41, 21 August 2025
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	When tooth flanks contact, then ideally the atomic bumpyness is as imcommensurable as possible. <br>		When tooth flanks contact, then ideally the atomic bumpyness is as imcommensurable as possible. <br>
	Such design leads to [[superlubricity]] when tooth-flanks rub more or less forcefully along each other ~~([*\|accidentally suggestive])~~.		Such design leads to [[superlubricity]] when tooth-flanks rub more or less forcefully along each other.

	Flank shapes can be approximated by [[strained shell structures]]. <br>		Flank shapes can be approximated by [[strained shell structures]]. <br>

Apm: /* Superlubricating toothflank gearbearings */ comma

2025-08-21T11:40:19Z

Superlubricating toothflank gearbearings: comma

← Older revision		Revision as of 13:40, 21 August 2025
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	Very much conventional gears. <br>		Very much conventional gears. <br>

	When tooth flanks contact then ideally the atomic bumpyness is as imcommensurable as possible. <br>		When tooth flanks contact, then ideally the atomic bumpyness is as imcommensurable as possible. <br>
	Such design leads to [[superlubricity]] when tooth-flanks rub more or less forcefully along each other ([*\|accidentally suggestive]).		Such design leads to [[superlubricity]] when tooth-flanks rub more or less forcefully along each other ([*\|accidentally suggestive]).

Apm: /* Shapecomplementary atomic teeth gearbearings */ improvements

2025-08-21T11:38:12Z

Shapecomplementary atomic teeth gearbearings: improvements

← Older revision		Revision as of 13:38, 21 August 2025
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	* For cylindrical rollers atoms can be arranged in rows or spirals. <br>		* For cylindrical rollers atoms can be arranged in rows or spirals. <br>
	* For conical rollers rows or spirals are not an option as the teeth <br>continuously and slowly ~~would~~ vary in width ~~which~~ atoms can't.		* For conical rollers rows or spirals are not an option as the teeth <br>continuously and slowly vary in width, a shape that atoms can't easily model at smallest scales.

	Some ~~prototypes~~ have been modeled theoretically via ~~means of~~ molecular dynamics ~~modelling~~.		Some inter-meshing gear pairs that could also be used as gearberings <br>
			have been atomistically modeled and theoretically simulated via [[molecular dynamics simulation]]s. <br>
			See e.g. the planetary gearbox on the page: [[Example crystolecules]]. <br>

	See: [[Examples of diamondoid molecular machine elements]]		See: [[Examples of diamondoid molecular machine elements]]

Apm: grave => gravel

2025-08-21T11:29:54Z

grave => gravel

← Older revision		Revision as of 13:29, 21 August 2025
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	'''Why no lubricants?''' Because: <br>		'''Why no lubricants?''' Because: <br>
	The atoms of lubricants are like ~~grave~~ at the nanoscale and <br>		The atoms of lubricants are like gravel at the nanoscale and <br>
	atomically precise surfaces of [[Base materials with high potential\|''good'']] [[gemstone like compounds]] feature:		atomically precise surfaces of [[Base materials with high potential\|''good'']] [[gemstone like compounds]] feature:
	* [[FAPP]] no [[wear]] (no structural irreversibility) and		* [[FAPP]] no [[wear]] (no structural irreversibility) and

Apm: /* External links */

2025-08-21T11:28:47Z

External links

← Older revision		Revision as of 13:28, 21 August 2025
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	Tapered roller bearing can be made tapered into gearbearings. <br>		Tapered roller bearing can be made tapered into gearbearings. <br>
	Adding a soft herringbone tooth trajectory can prevent rollers from sliding out despite compressive force. <br>		Adding a soft herringbone tooth trajectory can prevent rollers from sliding out despite compressive force. <br>
	In tapered roller gearbearings backlash can be elegantly brought to zero by applying some ~~very~~ axial pretension.		In tapered roller gearbearings backlash can be elegantly brought to zero by applying some optimal axial pretension.