It is currently Wed Oct 21, 2020 5:08 pm




Post new topic Reply to topic  [ 8 posts ] 
 Pulley component source? 
Author Message
User avatar

Joined: Fri Jul 23, 2010 6:05 pm
Posts: 444
Location: US Virgin Islands
Post Pulley component source?
I'm brainstorming a pan/tilt head but I was wondering where everyone is getting there Synchronous Sprocket, Timing pulleys..... I cant find a website that has a lot of pictures of all the components that are available. For brainstorming purposes I need to visually see whats available. What is the name of the component used when you lace a belt through them to force the belt around more of the timing pulley?


Fri Aug 06, 2010 7:26 am
Profile
User avatar

Joined: Fri Mar 12, 2010 12:16 pm
Posts: 370
Location: Gloucester UK
Post Re: Pulley component source?
Zigmo wrote:
I'm brainstorming a pan/tilt head but I was wondering where everyone is getting there Synchronous Sprocket, Timing pulleys..... I cant find a website that has a lot of pictures of all the components that are available. For brainstorming purposes I need to visually see whats available. What is the name of the component used when you lace a belt through them to force the belt around more of the timing pulley?


The belt tighteners are simple rollers so they could be almost anything in terms of design as long as they rotate. This site has a heap of pdf files on the basic components

http://www.hpcgears.com/

_________________
Wildlife and Nature photography
http://www.photosbykev.com


Fri Aug 06, 2010 9:52 am
Profile
Post Re: Pulley component source?
I don't know where you're located, but if in the US, there's always Stock Drive Products: http://sdp-si.com/eStore/ - they have lots of pictures, cad diagrams, etc. and you can order online =)

I'm trying to compile a list of useful vendors here: http://openmoco.org/node/221 I'll add HPC gears, thanks Kev.

!c


Fri Aug 06, 2010 10:03 am
User avatar

Joined: Fri Mar 12, 2010 12:16 pm
Posts: 370
Location: Gloucester UK
Post Re: Pulley component source?
shutterdrone wrote:
I don't know where you're located, but if in the US, there's always Stock Drive Products: http://sdp-si.com/eStore/ - they have lots of pictures, cad diagrams, etc. and you can order online =)

I'm trying to compile a list of useful vendors here: http://openmoco.org/node/221 I'll add HPC gears, thanks Kev.

!c

no problem Chris, another supplier I use for manipulator/robotic components is http://www.ondrives.com/index.php

_________________
Wildlife and Nature photography
http://www.photosbykev.com


Fri Aug 06, 2010 10:26 am
Profile
User avatar

Joined: Fri Jul 23, 2010 6:05 pm
Posts: 444
Location: US Virgin Islands
Post Re: Pulley component source?
Great. Thanks for the links I have found most of what I was looking for. One question. Do they make a flange similar to the on linked below, but with a bottom to it? so that the rod does not go all the way through but the end of the rod rest in the bearing.

https://sdp-si.com/ss/PDF/79501102.PDF


Fri Aug 06, 2010 5:42 pm
Profile
Post Re: Pulley component source?
Zigmo wrote:
Great. Thanks for the links I have found most of what I was looking for. One question. Do they make a flange similar to the on linked below, but with a bottom to it? so that the rod does not go all the way through but the end of the rod rest in the bearing.


Generally, no. At least, I've not seen stock pulleys that are captive like that. A question - why would you want one end captive?

!c


Fri Aug 06, 2010 7:08 pm
User avatar

Joined: Fri Mar 12, 2010 12:16 pm
Posts: 370
Location: Gloucester UK
Post Re: Pulley component source?
Zigmo wrote:
Great. Thanks for the links I have found most of what I was looking for. One question. Do they make a flange similar to the on linked below, but with a bottom to it? so that the rod does not go all the way through but the end of the rod rest in the bearing.

https://sdp-si.com/ss/PDF/79501102.PDF
You do realise that the shaft to fit into that needle race bearing needs to have a very high surface finish because the bearing doesn't have an inner sleeve?

I can understand using a bearing on the outboard side of the pulley to remove any loading on the gearbox output shaft but it will prevent you just slackening the belt to slip it off the pulley, the belt will need to be disconnected at one end and then fed through the pulley system.

With the very light loads involved and the very low rpm you shouldn't need any additional bearings.

regards
Kev

_________________
Wildlife and Nature photography
http://www.photosbykev.com


Fri Aug 06, 2010 10:40 pm
Profile
Post Re: Pulley component source?
Ok, and after realizing I completely mis-reading your post, I'd like to ask, what are you trying to do with a captive bearing? Support the motor shaft, or support the output shaft?

If you're looking to support the output shaft, I wouldn't suggest supporting it on both sides.

You can support it on the output side only, using a double-bearing arrangement. It has the benefits of ensuring an aligned shaft without the nightmares of trying to exactly align two holes. The output load can be fully supported by a dual-bearing on one side only, a gap between the two bearings makes this possible. In the videos of my pan and tilt unit, they are supported on one side in this fashion.

Take, for example, a product like this: http://us.misumi-ec.com/us/ItemDetail/10300101530.html You can also get custom shafts made at Misumi for cheap (you can design them online).

!c


Sat Aug 07, 2010 2:03 am
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © phpBB Group.
Designed by Vjacheslav Trushkin for Free Forums/DivisionCore. pozycjonowanie