Kubota RC40 Cutting deck RPM

[jrt750]

Hello Gentleman .


I wondering if anyone here can tell me the blade speed for a Kubota 3 blade grass cutting deck the gear box is one to one ratio so tractor pto speed would be the same .
The model is ..............RC40G17R............


I'am asking because I plan on adapting this to another contraption . It will surprise me if some one tell me something above 2000 rpm because I have never seen a 90 degree drive like this run really fast.
the other way to ask this is the Kubota G17 whats the max PTO RPM?


In advance Thank you very much ... John

 

[Xfaxman]

So it is evidently a mid mount deck. I don't have any Kubota experience and searching didn't find the G17 PTO RPM. If you don't get an answer here, try this: https://www.tractorbynet.com/forums/kubota-lawn-garden/

The right angle gearbox on my out front deck runs at 1850 RPM:

 

[jrt750]

Thank you, it is a start I will continue my search .

 

[gimmodog]

Hello Gentleman .


I wondering if anyone here can tell me the blade speed for a Kubota 3 blade grass cutting deck the gear box is one to one ratio so tractor pto speed would be the same .
The model is ..............RC40G17R............


I'am asking because I plan on adapting this to another contraption . It will surprise me if some one tell me something above 2000 rpm because I have never seen a 90 degree drive like this run really fast.
the other way to ask this is the Kubota G17 whats the max PTO RPM?


In advance Thank you very much ... John

My search found 78.3 m/s 15,400 FPM by doing a search for "rc40 mower deck blade tip speed

 

[Xfaxman]

My search found 78.3 m/s 15,400 FPM by doing a search for "rc40 mower deck blade tip speed

Now the question is, can you do the math using pulley diameter and gearbox ratio to find the PTO shaft RPM?

 

[jrt750]

Gearbox Input Shaft to blade ratio 1:1... the cutting deck I have has three 14" blades. 15,400 fpm is really high . At this speed the rpm would be over 4000rpm . Im going to work with 1800 rpm and see how that works . I will use the appropriate sized pulleys to get the rpm I'm looking for.

Thank you for the replies.

 

[CincyFlyer]

Gearbox Input Shaft to blade ratio 1:1... the cutting deck I have has three 14" blades. 15,400 fpm is really high . At this speed the rpm would be over 4000rpm . Im going to work with 1800 rpm and see how that works . I will use the appropriate sized pulleys to get the rpm I'm looking for.

Thank you for the replies.

Bear in mind that a single-blade 21" push mower will be spinning at 3,600 rpm! That's pushing 20K fpm ... so 15,400 isn't out of the real of possibilities. We are talking only of the tip speed. (The bent 78" propeller in the corner of my music room would spin at 2,700 rpm, for a tip speed of 55K fpm.