Electric Motors: Difference between revisions

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=Small DC Frame Sizes=
*$6 for 24V, 1000RPM - 15W - [https://www.aliexpress.com/item/32280906770.html?spm=a2g0o.detail.1000023.9.658d42aeDrP7oL]
=No Gearbox=
*550, 775, 895 - etc frame sizes - [https://www.aliexpress.com/item/4000076831509.html?spm=a2g0o.productlist.0.0.639345b0lirhXc&algo_pvid=9344b49b-d40b-41bc-b3f3-b06eeb1b11a8&algo_expid=9344b49b-d40b-41bc-b3f3-b06eeb1b11a8-1&btsid=0ab6d69515855077293774332e5688&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_]
*Ex. 775 motor - 150W - [https://www.aliexpress.com/item/32834217654.html?spm=a2g0o.productlist.0.0.639345b0lirhXc&algo_pvid=9344b49b-d40b-41bc-b3f3-b06eeb1b11a8&algo_expid=9344b49b-d40b-41bc-b3f3-b06eeb1b11a8-9&btsid=0ab6d69515855077293774332e5688&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_]
*Ex 895 motor - 360W - $17 - 12000 RPM - [https://www.aliexpress.com/item/32834217654.html?spm=a2g0o.productlist.0.0.639345b0lirhXc&algo_pvid=9344b49b-d40b-41bc-b3f3-b06eeb1b11a8&algo_expid=9344b49b-d40b-41bc-b3f3-b06eeb1b11a8-9&btsid=0ab6d69515855077293774332e5688&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_]. '''Good power but fast.'''
*150W for $12 - [https://www.aliexpress.com/item/4000052346615.html?spm=a2g0o.productlist.0.0.5997283fRByhuw&algo_pvid=a68a32d2-a431-47ed-b8da-5c2279857a83&algo_expid=a68a32d2-a431-47ed-b8da-5c2279857a83-2&btsid=0be3769015855092010962271e72ea&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_]
=Geared=
*14W - $6 - 1000 RPM - or slow, down to 22 kg-cm [https://www.aliexpress.com/item/32280906770.html?spm=a2g0o.detail.1000023.9.658d42aeDrP7oL]. '''Cheap but too low power'''.
=Using Existing Drills=
*Corded drills may be used as a power source.
*Cheap option, for good torque - 600W. $30 off the shelf. [https://www.harborfreight.com/12-in-heavy-duty-variable-speed-reversible-drill-69452.html?cid=paid_google|||69452&utm_source=google&utm_medium=cpc&utm_campaign=&utm_content=&gclid=EAIaIQobChMI-Kusj7bA6AIVA4NaBR04fQJ8EAQYASABEgL88fD_BwE]
*$15 for 3/8" drill - 300W - [https://www.harborfreight.com/38-in-Variable-Speed-Reversible-Drill-60614.html?ccdenc=eyJjb2RlIjoiNjkxOTkwMTMiLCJza3UiOiI2MDYxNCIsImlzIjoiMTQuMzkiLCJwcm9kdWN0X2lk%0D%0AIjoiOTE1MiJ9%0D%0A&cid=paid_google|||60614&utm_source=google&utm_medium=cpc&utm_campaign=&utm_content=&gclid=EAIaIQobChMItaKdwrbA6AIVCj0MCh3qUAM4EAQYASABEgIoLPD_BwE]
*Best option for powering a shredder-  use common drills.
=Treadmill Motor=
*The best option for the money in terms of power for any electric motor, $50 for 3 hp. [https://www.surpluscenter.com/Electrical/DC-Motors/Special-Purpose-DC-Motors/3-HP-Icon-Health-And-Fitness-Treadmill-Motor-M-184002-10-3033.axd]
=NEMA Motor Sizes=
*See [[Nema Stepper Sizes]]
=Basic=
*This page explores sourcing for various electric motors
*'''Summary: 4 hp treadmill motors (high voltage DC) are the cheapest replicable source of motors per horsepower - at $20 per horsepower. Next is 5 hp compressor motors for $180, or $60/kW. Interesting, the surplus treadmill motors are a win. Since they are 130VDC, you could rectify regular wall power or use batteries'''
=BLDC Hub Motors=
=BLDC Hub Motors=
*$100/kW - [https://www.amazon.com/motor%EF%BC%8CCE-Electric-brushless-electric-bicycle/dp/B01N1FGU6R/ref=asc_df_B01N1FGU6R/?tag=hyprod-20&linkCode=df0&hvadid=309768114180&hvpos=1o11&hvnetw=g&hvrand=15490972971724339893&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9023315&hvtargid=pla-668923236380&psc=1]
*$100/kW - [https://www.amazon.com/motor%EF%BC%8CCE-Electric-brushless-electric-bicycle/dp/B01N1FGU6R/ref=asc_df_B01N1FGU6R/?tag=hyprod-20&linkCode=df0&hvadid=309768114180&hvpos=1o11&hvnetw=g&hvrand=15490972971724339893&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9023315&hvtargid=pla-668923236380&psc=1]
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=220 AC=
=220 AC=
'''Best price per kW for motors - $70/kW'''
'''Best price per kW for motors - $70/kW'''
*5 hp compressor motor - $180 - $60/kW - [https://www.ebay.com/itm/5-HP-SPL-3450-RPM-Air-Compressor-60-Hz-Electric-Motor-208-230-Volts-USA/123136559401?hash=item1cab82c929:g:K08AAOSw~TBa~APJ]
*5 hp/ 3kW compressor - continuous duty -  $215 - [https://www.amazon.com/VEVOR-Electric-208-230V-Compressor-Compressors/dp/B07D8RCL78/ref=sr_1_1_sspa?keywords=4+kW+electric+motor&qid=1558289906&s=gateway&sr=8-1-spons&psc=1]
*5 hp/ 3kW compressor - continuous duty -  $215 - [https://www.amazon.com/VEVOR-Electric-208-230V-Compressor-Compressors/dp/B07D8RCL78/ref=sr_1_1_sspa?keywords=4+kW+electric+motor&qid=1558289906&s=gateway&sr=8-1-spons&psc=1]


=Weird=
=Weird=
*3hp AC 200V - $60 - [https://www.surpluscenter.com/New-Arrivals/3-HP-3600-RPM-200-Volt-AC-AO-Smith-Motor-10-3188.axd]
*3hp AC - $30 - [https://www.travers.com/cut-off-saw-motor/p/87-117-537/]
 
=See Also=
*[[Electric Motor Sourcing]] merge with? Yeah we should. tons of duplicate pages
*[[Open Source Motor/Engine Construction Set]]

Latest revision as of 02:24, 24 December 2020

Small DC Frame Sizes

  • $6 for 24V, 1000RPM - 15W - [1]

No Gearbox

  • 550, 775, 895 - etc frame sizes - [2]
  • Ex. 775 motor - 150W - [3]
  • Ex 895 motor - 360W - $17 - 12000 RPM - [4]. Good power but fast.
  • 150W for $12 - [5]

Geared

  • 14W - $6 - 1000 RPM - or slow, down to 22 kg-cm [6]. Cheap but too low power.

Using Existing Drills

  • Corded drills may be used as a power source.
  • Cheap option, for good torque - 600W. $30 off the shelf. [7]
  • $15 for 3/8" drill - 300W - [8]
  • Best option for powering a shredder- use common drills.

Treadmill Motor

  • The best option for the money in terms of power for any electric motor, $50 for 3 hp. [9]

NEMA Motor Sizes

Basic

  • This page explores sourcing for various electric motors
  • Summary: 4 hp treadmill motors (high voltage DC) are the cheapest replicable source of motors per horsepower - at $20 per horsepower. Next is 5 hp compressor motors for $180, or $60/kW. Interesting, the surplus treadmill motors are a win. Since they are 130VDC, you could rectify regular wall power or use batteries

BLDC Hub Motors

220 AC

Best price per kW for motors - $70/kW

  • 5 hp compressor motor - $180 - $60/kW - [12]
  • 5 hp/ 3kW compressor - continuous duty - $215 - [13]

Weird

See Also

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