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Spiral Beval Gear with 4:1 ratio ?

Spiral Beval Gear with 4:1 ratio ?

Spiral Beval Gear with 4:1 ratio ?

(OP)
Is there a manufacture that produces spiral bevel gears with a ratio of 4:1 or larger?  
The diametral pitch will be 12 or 10 and it will be preferred if they are Aerospace quality.


Thanks
Dave

RE: Spiral Beval Gear with 4:1 ratio ?

You can probably find a high quality (automotive) hypoid R&P close to that, but it has an offset axis.

As for AGMA 12 or better (aerospace quality) spiral bevel sets, I don't think you'll find anything "off the shelf". But there are literally dozens of capable gear manufacturers that can produce high-quality, case hardened & ground spiral bevels to your specifications.  Anyone with a Gleason grinder can do it.

You also might try to find a replacement gear set from a light helicopter gearbox.  Most helicopter transmissions use spiral bevels.

Or if you've got some budget, I can recommend the name of a very good helicopter transmission guy that could design those gears for you.

Good luck.

RE: Spiral Beval Gear with 4:1 ratio ?

(OP)
tbuelna

Thanks for the info.

RE: Spiral Beval Gear with 4:1 ratio ?

Yes there is,

ATA gears in Finland up to 7:1 when i last needed them

Greetz,

Martin

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