looking for a long gear/extruded spur gear

looking for a long gear/extruded spur gear
Posted by dequo on 08 Apr, 2011 07:36
I need a long gear for a project, im sure theres a name for what i want but i havent been able to find anything.

It needs to be like a cylinder with teeth going lengthways, the opposite of a worm gear almost. the rest of the project can be adapted to its pitch diameter etc. Preferably a diameter of 35mm and about 10cm long.

i have though of getting it custom made but im sure somebody would sell something like this..

#1 Reply
Posted by GeoffS on 08 Apr, 2011 07:53
Look up timing belts or pulleys and you/ll find something like this:

is this what you're after?

#2 Reply
Posted by dequo on 08 Apr, 2011 08:22
yeah pretty much that but it needs to be able to mesh properly with a spur gear. the thread on that looks more rectangular

#4 Reply
Posted by DaveW on 08 Apr, 2011 09:33
How about this,
http://www.hpcgears.com/products/toothed_bar_stock.htm

HPC are very good, had them make some custom gears for me for robot wars, was surprisingly cheap

#5 Reply
Posted by mjkuwp on 08 Apr, 2011 12:52
Do you need one for a one-off project, or a supply of them for production? it makes a difference. Also you describe the gear as "tall" but specifiy 10mm thick by 35mm DIA... which seems short and fat. Is the difference semantics? or a typo? I guess relative to a lot of things I see 10mm thick would be unusual but I just wanted to make sure.