Small DC motor w/ gearbox

Hi all,
I'me looking for a small geared DC MOTOR ratio 54:1, supplied at 12vdc and capable to take optical encoders. Any information about suppliers will be wellcome.
Thanks in advance, best regards, Carlos Oliveira
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snipped-for-privacy@sapo.pt says...

That's somewhat of a loose requirement to ask for. If you could give us what your desired output RPM and torque requirements are, then perhaps somebody can make some useful suggestions.
Unless, of course, you have some specific need to have a 54:1 reduction - I'd like to hear what you're doing that needs that specific ratio!
My company is carrying a variety of gear motors (non at that low of a ratio) that *might* be useful to you - we'll see!
Regards, Dave
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Hello Dave,
You' re right! this is very few requirements to ask for on searching by a geared DC motor. I want to replace the R.A. drive of my telescope (LX200), by a better accurate system. I' ve got to respect the native ratio of the drive or modify it just a little bit (that' s what I' m trying to do). The original ratio is 60:1 with a 90 tics optical encoder and I want to use a different kind of encoder (100 tics) reason why I' m looking for a ratio 54:1. This system works together with a worm and a 180 teeth worm gear which I can't change. So, the ratio is critical but the RPM is not, because the speed is not constant, it varies depending on the mode of working. The torque is not very important because the original drive is made with a ordinary mini dc motor (toys-type) 12-18vdc with typical torque ratings of 1 to 5 oz.in. per ampere. This motors have typical resistances of 4 to10 ohms. Let' s point to a final torque (after the gearbox) between 150 and 200 oz.in.. Now, with this more specific explanation, where can I find such device? Please see the attached photo, for an example of what I want. Thanks again for your help and I' ll be waiting for you.
Best regards, Carlos Oliveira
----- Original Message -----
Newsgroups: comp.robotics.misc
Sent: Thursday, February 05, 2004 5:37 AM Subject: Re: Small DC motor w/ gearbox

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? 2004?2?4???? UTC+ 8??3:55:34?Carlos???

Sell: China Shenzhen ZHAOWEI Machinery & Electronics Co. Ltd engages in designing , manufacturing and marketing all kinds of electric motors. They are mainly suitable for the following applications: smart home application used in sm art kitchen and laundry, medical instrument for personal care, smart E-tran smission applied in automobile, industry automation applied in telecommunic ation and a great variety of plastic/metal planetary gearbox in different s izes. In order to develop the oversea market, we are current seeking new partne rs around the world to create a bright future together. ZhaoWei is a right choice and excellent partnership with sincere services.
Company: Shenzhen ZHAOWEI Machinery & Electronics Co., Ltd URL: http://www.zwgearbox.com/ Contact: Anny Liu Tel?+86-755-27322652 Fax?+86-755-27323949 E-mail: snipped-for-privacy@zwgearbox.com Add: Blk. 18, Longwangmiao Industry Park, Fuyong Tn., Bao?an Dist., Shenzhen 518103, Guangdong, China
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Sell: China Shenzhen ZHAOWEI Machinery & Electronics Co. Ltd engages in designing , manufacturing and marketing all kinds of electric motors. They are mainly suitable for the following applications: smart home application used in sm art kitchen and laundry, medical instrument for personal care, smart E-tran smission applied in automobile, industry automation applied in telecommunic ation and a great variety of plastic/metal planetary gearbox in different s izes. In order to develop the oversea market, we are current seeking new partne rs around the world to create a bright future together. ZhaoWei is a right choice and excellent partnership with sincere services.
Company: Shenzhen ZHAOWEI Machinery & Electronics Co., Ltd URL: http://www.zwgearbox.com/ Contact: Anny Liu Tel?+86-755-27322652 Fax?+86-755-27323949 E-mail: snipped-for-privacy@zwgearbox.com Add: Blk. 18, Longwangmiao Industry Park, Fuyong Tn., Bao?an Dist., Shenzhen 518103, Guangdong, China
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China Shenzhen ZHAOWEI Machinery & Electronics Co. Ltd engages in designing , manufacturing and marketing all kinds of electric motors. They are mainly suitable for the following applications: smart home application used in sm art kitchen and laundry, medical instrument for personal care, smart E-tran smission applied in automobile, industry automation applied in telecommunic ation and a great variety of plastic/metal planetary gearbox in different s izes. In order to develop the oversea market, we are current seeking new partne rs around the world to create a bright future together. ZhaoWei is a right choice and excellent partnership with sincere services.
Company: Shenzhen ZHAOWEI Machinery & Electronics Co., Ltd URL: http://www.zwgearbox.com/ Contact: Anny Liu Tel?+86-755-27322652 Fax?+86-755-27323949 E-mail: snipped-for-privacy@zwgearbox.com Add: Blk. 18, Longwangmiao Industry Park, Fuyong Tn., Bao?an Dist., Shenzhen 518103, Guangdong, China
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