Looking for a planetary gear box

[HAL9000v2.0]

and I have some limitations:
1:25 - 1:40 ratio so I gues it will be 3 stage
maximal odo 57 mm
maximal length 250mm
minimal modulus of exit stage is 1
with or w/o housing
under 200$
I preffer metric but ulu-ulu maesures will be fine too...

If someone know where to find that please let me know..

 

[Hillhater]

How much power & torque will this have to handle ??

 

[MitchJi]

Hi Hal,

The Matex units Ben used might fit your requirements (link to Ben's build thread):
http://endless-sphere.com/forums/viewtopic.php?f=28&t=15233

The goal of this project is to mate a magnetic clutch (for brake regen) with a compact planetary drive--two 75 series Matex gears (total 12:1 reduction) powered by a 10-turn Astro 3210.

Probably doesn't meet your price requirement unless you look on Ebay:
http://www.neugartusa.com/Produkte/ple.html

The PLE – precision planetary gear head is designed for economical drive solutions in automation
It represents and economical alternative to the PLS-series planetary gears in applications where the extremely low backlash and high stiffness is not required.

# low backlash
# high output torque
# patented PCS®
# high efficiency (96%)
# 22 ratios i=3,...,512
# low noise
# high quality (ISO 9001)
# any mounting position
# easy motor mounting
# life time lubrication
# 30000 hrs design life
# optional NEMA output flange

I sent them an email about using it with an Astro 3210 or 3220 and got these replies:

Thank you for your interest in Neugart USA. Looking at your specifications, it would appear that we have several options that would work for your project. From the motor sheet, it would appear that the maximum torque your motor is capable of producing is 500 inoz, which equates to 3.53 Nm. Depending on the reflected inertia, the gearbox at 5:1 should only see around 8Nm. Our PLE 40-5 is rated for 14 Nm, and can handle maximum speeds up to 18,000 RPM. It is available in both inline and right angle configurations. There are a variety of different configurations available on the input, and that could affect the pricing significantly.

There are a variety of different configurations available on the input, and that could affect the pricing significantly. Because of the number of different options available, it would be more efficient to speak to you about your application over the phone, rather than sending several emails back and forth. If that is not possible, we can still hash out the details via email.

I have worked with 2 other companies using our gearboxes with electric bicycle applications and we have had very positive results...

There are two companies that we have worked with. One company used a motor by Astroflight, so Bob should be familiar with our company. In their final version we offered our DMA (direct motor attachment) which allowed a savings in both space and cost.

As for the noise, there are too many variables that can affect the sound level (load, mounting, etc) but our controlled testing shows 58 dbA @ 3000 RPM no load.

Pricing for the PLE 40 single stage (ratio 3, 4, 5, 8) start at around 300.00 in low quantity, depending on the mounting.

Another possibility might be the Neu P62 6.75:1 planetary gearbox:
http://www.neumotors.com/Site/Gear_Drives.html

. The P62 is suitable for well over 10,000 watts. With a 12mm shaft you can run props that are over 30 inches in diameter!

http://www.castlecreations.com/products/neumotors/2200/2230/2230-1y.html

P62 6.7 gear ratio Gearbox - (add $289.00)

 

[boostjuice]

Assuming you want to feed this planetary gearbox with a multi KW RC motor, i dont think your going to keep the output torque below the max rating of any sub $200 fully housed, quality gearbox. At least not without getting lucky on minimal quantities on eBay.

Here's another manufacturer anyway....
http://anaheimautomation.com/products/gearbox/planetary-gearbox.php?tID=109&pt=t&cID=30

Closest to your specs would be the GBPH-0602-CS-[025>040]

OD = 60mm
Total length (inc OP shaft) = 133mm
length (without OP shaft) = 105mm
Stages = 2
Available ratios in your target range = 25, 28, 30, 35, 40 : 1
Continuous OP torque = 48Nm
Peak OP torque = 96Nm
Max IP speed = 6000RPM
Efficiency = 95%
Radial Load (OP)= 85.73 Kilogram-force
Noise Level 68 = dB
OP modulus = ???
Price: $298.90

As an example, apart from being input speed limited to 6000RPM, an Astro 3210 would exceed the OP torque limits of this gearbox at any reduction ratio > 13.6 : 1
Astro 3210 Max continuous OP torque (for 1 minute) = 3.53Nm
48Nm/3.53Nm = 13.6

To allow for higher reduction ratios, you would have to move up to the more expensive range of 90mm OD gearboxes by this manufacturer.

What motor do you have in mind?

 

[HAL9000v2.0]

Thank you all. I have to study this a while.
I will use TURNIGY 50-65C 320kv.
I need around 300rpm on exit. torque as much as it can get.
here is volts/ratio chart for this motor
desired max power is around 1k so I guess 24V40A will be the best choice of voltage and battery discharge ... then the gear ratio will be around 1:26.

Must think of it a while
Thanks again.

 

[HAL9000v2.0]

I just get this one. It is not what I was looking but it will be fine for testing. It was 50$...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140442799284&ssPageName=ADME:B:BOC:US:1123#ht_1374wt_1138

 

[boostjuice]

Heres the datasheet for it if you haven't already found it http://www.zf.com/na/content/media/...al_drives/ZF_Servoplan_PGE_Catalog_rev_c_.pdf <Page 10>


-Max. input speed = 6000rpm
-Nominal input speed = 3000rpm
-Nominal output torque relating to 3000rpm input speed = 19Nm

 

[HAL9000v2.0]

Just came. it came out over 200$ because !"§{@|€˘°°^%&/& seller send paypal bill inside with shipping included so I have to pay custom, tax, and some other sheeet...
But it is in great condition. Almost no ressistance. Ofcourse on slow speed. I must make some modifications tomorow and then will make some pictures...
Regardeless on price, me like