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Drill Motor Gear Specs?
Does anyone know the exact specs: Pitch diameter, pitch etc. for the gear that is on the Bosch drill motor. I am trying to make a gear reduction box for it (without the planetary reduction that comes with it) and I want to get the center to center distances right, and get the correct gear to mesh with it.
Near as I can measure the pitch seems to be 7mm but if anyone knows for sure - or where to find the info - I would much appreciate it. Thanks, Greg Team 709 |
Re: Drill Motor Gear Specs?
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Re: Drill Motor Gear Specs?
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Thanks again, Greg |
Re: Drill Motor Gear Specs?
firstcadlibrary has one, but they seem to be down right now.
The pinion gear is a 15 tooth, modular 7 pitch gear. Pitch Diameter is 10.5mm and the gear has a 9mm face width if you couldn't read the posted pdf. You can find gears to mate with it from PIC http://www.pic-design.com/ Also, a nice mm to inches converter can be found here http://www.omnis.demon.co.uk/ |
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Do the gears change from different years? I downloaded a drillmotor gear from FIRST CAD but it has 12 teeth...like the one on the drillmotor I'm looking at right now. Greg |
Re: Drill Motor Gear Specs?
The motor & pinion posted on FirstCadLibrary are not from last year. I intend to post this motor & pinion very soon.
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Re: Drill Motor Gear Specs?
Last year there was a new model bosch drill motor given in the kit. Previous years drills were from a 3/8 inch hand drill and last years were from a 1/2 inch. Every year the motors change up a little so its always good to be cautious when designing things pre-season.
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Re: Drill Motor Gear Specs?
For those that have knocked the pinion off of the drill motor:
1) Do you have any idea how much force (in tons) it took approximately? I have a 1/2ton arbor but I'm not sure whether or not it will do the trick. 2)What did you use for the punch itself? Thanks -Rc |
Re: Drill Motor Gear Specs?
I would not suggest taking that pinion gear off the Bosch. Doing so just adds about 10 things that can go wrong with it. The small metric gear on it now is press fit perfectly onto the small metric shaft. You can order mod7 gears from PIC to mate with it very nicely. In all, its just much more added complexity and time to save ordering 1 mod 7 gear.
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Pinion Removal
We took the pinion off the motor and a 1/2 ton will work fine. We used an M3 bolt as our punch. Line in up and slowly press it off .. like butter.
To place another pinion on the shaft, I suggest a 0.001" to 0.0015" press fit maximum. -Paul |
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Thanks one and all, Greg |
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60 teeth x 0.7 = 42 mm pitch diameter Good luck getting parts delivered from PIC. They have traditionally had a 3-4 week delivery for these types of gears, at best. Andy B. |
Re: Drill Motor Gear Specs?
Baker,
They must not like you too much. I get my 0.7 module gears from them in 2 weeks. It must be the accent. Does this violate your "Don't bother posting" rule? -Paul |
Re: Removing Drill Motor Gear
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Re: Drill Motor Gear Specs?
No, No, No; do NOT use a dremel. Use a press and push the gear off. Please see my post above in this thread. You could cause damage to the motor if you cut it off with a dremel.
-Paul |
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