Wanted: Non-Metallic Self-Lubricating Ring Gear

For a gear transmission not only the diameter is important but also the module or the diametral pitch and this you do not give.

The feasibility depends on the torque you intend to transmit. Rpm is quite high and if the tangential load goes over a limit which depends on the material capability to diffuse generated heat the plastic tooth will melt. So giving a hint for the material to be used is with data you gave not possible. You find ( I presume you are in the UK) a lot of nylon gear suppliers via kellysearch or other engines. There are several qualities some of them with incorporated lubricants either solid (graphite...) or special greases. But in all cases the limit is the transmitted power and generated heat.

Best you use google as I did and find the supplier near to your place.

Maybe by using the term 'non-metallic' it's bit misleading.. it can be made of metal(s) or metal alloys as long as it equals or surpasses the strength and wear properties of the usual steel [with lubricant] internal gears and is self lubricating.

Seems like Delrin [DuPont] and Phenolic are the standard non-metallic materials used and they both have many variations.

I will have to get back to you with the calculations because I have a design issue to solve right now plus I'm rather busy with other things. Thx Jon

Hello J_London_UK:

Here are some nonmetallic gears. Not sure if they have the one you want, but my first choice would be the top link in Hertford UK.

The second site will make gears to order, in any material.

Hope this helps.

• Huco Dynatork based in Hertford, UK is a provider of Non Metallic Gears. They also supply Bevel, Spur, Steel, Worm and Stainless Steel Gears and they offer ...
  www.kellysearch.com/qz-product-44388.html - 76k - Cached - Similar pages

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• http://www.rushgears.com/Prototypes/pl.php

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  The gears may be manufactured from metallic or non-metallic materials. The metallic gears with cut teeth are commercially obtainable in cast iron, steel and ...
  www.agroengineers.com/gears/Gear-Materials.shtml - 21k - Cached - Similar pages

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• ▷▷▷ PION - www.goPION.com : Mechanical Engineering Solutions ... Steel Gears - Permissible stress. Non-metallic Gears. Non-metallic gears - Physical Properties Non-metallic gears - Permissible Stress ...
  www.gopion.com/pion-php/board.php?board=TReport&command=body&no=29 - 43k - Cached - Similar pages
• Non Metallic Gears - Worldwide - Page 1 of 2 - Suppliers of Non ...

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• Steel Gears on ThomasNet.com from 2 D.P. to 250 plus D.P. Materials used include alloy steels, stainless steels, aluminum alloys, plastics, & non-metallic... Steel Gears Product ...
  www.thomasnet.com/products/steel-gears-34390401-1.html - 78k - Cached - Similar pages

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• [PDF] OBERDORFER PUMPS CHEMSTEEL SERIES S923 NON-METALLIC File Format: PDF/Adobe Acrobat - View as HTML
  Gear & bearing combinations of metallic and. nonmetallic wear surfaces. ... Gears available in metallic 316 stainless steel and. Alloy C. Also in Teflon®, ...
  www.oberdorfer-pumps.com/Spec_sheets/NM%20923.pdf - Similar pages Take care, I to am in the UK. Have a great holiday..............................

Many thanks! I am actually in China for now but all info helps form an overall knowledge of what does what and is available commercially and I may make the prototype in the UK or France anyway. Regards, Jon