Planetary Gearbox

How is the Inline Gearhead connected to anything? Does it have input and output shafts, or something more like a splined fitting / opening into which a shaft can be inserted, or does it have input and output pulleys, or chain sprockets, or what?

Given the answer to that question for the input side of the Gearhead, you now have to find either a motor that fits that couples up to the input directly, or find appropriate adapters. If you describe the input to the gear reducer, ideally including a drawing or sketch (legible), someone might be able to help you.

rhkramer: The output side of the gearbox has a shaft that is supposed to spin at 1/100 of the speed of the motor driving the gearbox. The input to the gearbox allows access to three small gears arranged in a triangular configuration with a small space centrally located between them. The motor driving the unit should have a shaft and gear that meshes with all three gears at the same time. In this gearbox, the diameter of that gear is about 1/4 inch. This gearbox is about the size of my hand. It should easily lift 1000 pounds if I used it as a winch.

You are correct that I must find a motor with a shaft and gear to mesh with the gearbox. Or I must find an adapter to join the motor to the gearbox. I believe that all winches, hoists, milling machines and other motor-driven machines of this type use planetary drives with this or similar configurations. I know what I need, but where can I get it? Perhaps my only option is to tear a winch apart to seperate the motor from the gearbox and reattach them in the way that I want.

Thank you for your response.

If you only have the gearhead and no matching motor - it may be a lot of fiddle (cost) to match one.

If you have a motor but wrong voltage - you can get it rewound.

But maybe have a look at the Maxon product range. Sounds of a size. It's quality stuff.

[and unfortunately, no, I don't get a kick-back]

Thanks, Guru. Maxon has what I need. I don't know why CGI couldn't help me.

wl haynes

You're missing the sun gear in the planetary gear set. It has to be part of the assemby. It was matched on manufacture. I don't think you will find a matching sun gear on any old electric motor shaft. Best get the sun gear from cgi. It will come either with an attached shaft, or a hole for a shaft. Preferably you would like a hole, and then machine it to fit your motor shaft. But, you will need some kind of rigid concentric mounting frame from the motor to the planetary box.