2017 Bosch Seat Motor

[Richard Wallace]

My team has had good results, both last year and this year, using 3/8" hex shaft after drilling out the plastic spline and broaching. However, none of our applications have required the full torque capability listed on this motor's data sheet. We have used it to adjust tilt angle for various mechanisms that do not have a lot of overhanging load.

After broaching 3/8" hex, the plastic coupling is fairly thin. Has anyone used this method and loaded it heavily; e.g., torque > 100 in-lb?

[kprzewodek]

Originally Posted by Richard Wallace

My team has had good results, both last year and this year, using 3/8" hex shaft after drilling out the plastic spline and broaching. However, none of our applications have required the full torque capability listed on this motor's data sheet. We have used it to adjust tilt angle for various mechanisms that do not have a lot of overhanging load.

After broaching 3/8" hex, the plastic coupling is fairly thin. Has anyone used this method and loaded it heavily; e.g., torque > 100 in-lb?

We've also had a good experience broaching 3/8". Not sure if it reached full loading but it was pretty close.

I also tried adding a 1/2" socket bit and filled the gaps with epoxy. Haven't torture loaded but it was holding up for some mid load prototyping.

Just remembered we did some torture testing. Information is in last years thread about half way through. https://www.chiefdelphi.com/forums/s...sch+seat+motor. I should point out that this was using a rotary broach which doesn't quite give you the flat sides that a linear broach provides.