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Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:01 am
by walter
Lately I found out there are a number of very good bevel gear gear boxes available.
All using geared motors.
It is amazing how simplistic these gear boxes actually are against the modification of a standard gear box I did before.
Looking on the internet I found bevel gears with module 1 15 teeth and a 6mm bore.
Making them small enough to be viable for my project.
Also I found Merkle-Kroff geared motors that just stated 6-12 volt 30 rpm.
When I received them I soon realized I had a problem.
The motors rpm's where way to slow, the drive shaft was 1/4 inch and 10mm to short.
All the screw sizes had some strange American threads.
I had to re tap the mounting screw holes to be able to use screws I had.
But the overall quality was very good.
Here is how I went about it.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:04 am
by walter
The bevel gears

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:10 am
by walter
Geared motor all ready with new motor fixed.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:19 am
by walter
This is the original motor.As can be seen the shaft is knurled.Also the new motor with a new pinion.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:21 am
by walter
Gear housing and cover.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:22 am
by walter
All gears removed.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:24 am
by walter
All the gears.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:26 am
by walter
Old and new main gear shaft. New shaft is 10mm longer.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:29 am
by walter
Side plate. It also will be used to fix the gear box to the side wall of the tank.

Re: Building a Bevel gear Gear Box

Posted: Thu Jun 07, 2018 6:30 am
by walter
Bottom plate.