Advanced Search

The Green Industry's Resource Center

Old 03-13-2013, 08:52 PM
etap etap is offline
LawnSite Member
Join Date: Dec 2010
Location: louisville,ky
Posts: 13
would all pulleys have to be the same

I have a zero turn,and i had to replace the center pulley,because i bent the pulley taking off blade. It was 4.75 and i replaced with 5 inch but the two pulleys outside are 4.75. Thx
Reply With Quote
Old 03-13-2013, 09:28 PM
piston slapper's Avatar
piston slapper piston slapper is offline
LawnSite Platinum Member
Join Date: Mar 2010
Location: Tampa Fl
Posts: 4,236
If the belt works...should be ok...though the center blade will spin a tad slower..
Might be an issue in thick grass..
If You Have All The Answers...Except The One You Need...You're Not Trying Hard Enough...
Do The Work
Reply With Quote
Old 03-13-2013, 09:56 PM
dutch1's Avatar
dutch1 dutch1 is online now
LawnSite Silver Member
Join Date: Dec 2004
Location: Jayhawk
Posts: 2,227
Ya beat me to the gravy, Slapper--I was doing a bit of figgerin with my sharp pencil.

I just picked out a Toro Z 60' that just claims a blade tip speed of 18,500 ft/min=222,000 in/min. Assuming a 20" blade, that yields a spindle speed of about 700rpm. Replacing the 4.75 diameter with a 5" pulley will reduce the spindle speed to about 630rpm or a blade tip speed 197820 in/min or 1648 ft/min. In other words, about a 10% loss of rpm/blade tip speed.

Like you say Slapper, it may be an issue in tall/thick grass(quality of cut) but it also may negatively effect deck clearing capabilities. How much of an effect, I can't predict.
Reply With Quote
Old 03-15-2013, 08:27 PM
birddseedd birddseedd is offline
LawnSite Silver Member
Join Date: Jan 2012
Location: Kalamazoo MI
Posts: 2,114
I always go to the local industrial supply shop for my bearings and pulleys. much cheaper than what youll get at the mower shop and higher quality.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Layout Style:

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Grand View Media
All times are GMT -4. The time now is 08:27 PM.

Page generated in 0.06715 seconds with 8 queries