m35 pto gear question

[ODdave]

Dose anyone happen to know the pitch of the pto gear for the spicer 3053? I am thinking of changing to a muncie pto with an atached hydrolic pump. I need to know what gear to order for it.

 

[eddiec]

Do you need a pic, measurement, number of teeth, angle? Not really sure what u are asking for. Is there a number on the gear itself?

 

[73m819]

Ask MR. G.

 

[ODdave]

I need the angle of the teeth and the "depth" How much the gear sticks out past the mounting flange.

I am hoping G steps in.

 

[m16ty]

I checked awhile back and I found out that short of having a gear custom made, you won't find one. Chelsea did make a gear but it's been obsolete for several years. I couldn't get anybody to ever confirm that Muncie ever made a gear. If you can find somebody with an old Chelsea catalog it's in there but it's no longer available.

You may have better luck than I did but all I ended up with was dead ends.

 

[spicergear]

I was on a PTO search for a long time too. The lion's share of the civvy/commercial market has the teeth with the opposite helix angle as well. Best bet is to buy a pump and divorce mount it or build a cage between the PTO and pump and mount it with a coupler...but that'll take some doing.

 

[SCSG-G4]

Sounds like it will be easier to find a busted PTO and rob the gear out of it.

 

[ODdave]

Sounds like it will be easier to find a busted PTO and rob the gear out of it.

Ya.....if I knew what gear I needed I might be able to do that. I am not looking for spicer parts.

 

[davey8943]

Dave,

Its a tough measurement to take with a pair of hand calipers, but I come up with something close to 0.475.

I have a "scrap" sitting on my work bench I would be happy to send if it would help...

Dave

 

[spicergear]

Ya.....if I knew what gear I needed I might be able to do that. I am not looking for spicer parts.

Most of the PTO-hydraulic pump combination that I've seen are not single shaft units, they're two shaft that would necessitate having two gears, not just one.

 

[gringeltaube]

PTO Input Gear Specs

..........I need to know what gear to order for it.

Maybe they have an updated catalog for all gear options as well as relative axial position, and hopefully we can find one that matches...?
Otherwise I would try to do what Tom suggested.

Below is what I can measure (relatively precisely) from mine... but this is far from being enough info to have gears custom fabricated, though.

G.

 

[ODdave]

G, Can you explain these mesurements, Pitch diam, Circular pitch, & helix angle?

I come up with 55* angle on the gear, (tore apart a PTO today)

 

[ODdave]

Hey G, page 12 Bottom left. What do you think about gear # S70 ?http://www.munciepower.com/clientuploads/directory/Resources/TR/TR-G94-01.pdf

 

[gringeltaube]

Hey G, page 12 Bottom left. What do you think about gear # S70 ?http://www.munciepower.com/clientuploads/directory/Resources/TR/TR-G94-01.pdf

Very interesting info, indeed! A huge qty of PTO's in every configuration for every imaginable application BUT... nothing (that I could find) would fit our old Spicers:
Besides correct size, position and depth we need to look for a gear 7.2 (or 7.18 )P 20º PA 29ºRH, according to their chart and nomenclature.

..... Can you explain these mesurements, Pitch diam, Circular pitch, & helix angle?

... in words AND keep it easy to understand for everyone? NO!
Like "Helix angle, definition: the angle the involute tooth form makes with the transverse plane at the pitch radius...."

Instead I made diagrams showing helix- vs lead angle, also pitch diameter/ circle and circular pitch.... (very much simplified, of course)

Otherwise just google helical gear terminology to find all the complicated definitions ....


G.

 

[m16ty]

Here's a PDF of Chelsea PTO gears. Go to page 7 for a list of transmissions.

http://www.adifp.com/ChelseaPDF/ChelseaParts_Lists/HY25-2352-M1_US.pdf

I will add that I talked to Chelsea several years ago and the gear to fit the 3053/3052 was obsolete.