Toolguy said:
The
B3030 manual lists 500 lbs as the maximum wieght for a rear mower.
Typically, a tractor can lift approximately twice as much (or more) at the 3ph as the manual lists for implements used while in motion. Manuals usually list the maximum lift capacity, and then the weight recommendations for implements used while in motion are normally listed at about half of that, or less. Attachments used while the tractor is sitting still (chippers, post hole diggers, cement mixers, generators, etc.) do not have max. weight recommendations listed. The reason for this is the potential for abuse and warranty issues. A
B3030 can lift much more than 500 lb. at the 3ph. But let's say your nephew from the city comes to visit, gets on the
B3030, puts it in high range, and races out across a furrowed field perpendicular to the furrows. Normally, the
B3030 could handle a 1000 lb. rough cutter with no problem, but as the irresponsible kid races across the furrows with a 1000 lb implement attached, the downward forces of oscillation increase the G-forces and the stress on the 3ph is equivalent to 2000 or 3000 lb. on the hitch each time the tractor bounces. If the hitch breaks, Kubota doesn't want to pay the warranty costs to fix it. The implement weights listed in the manuals are quoted at numbers low enough that tractor abuse will not break the 3ph. You should be able to operate with much heavier implements with no problems at all as long as you do not abuse the tractor. If you abuse the tractor with an implement heavier than the recommended weight, however, Kubota can say, "Ahh, you had a heavier than recommended implement on the tractor, so the warranty is voided and we don't have to pay." As long as you are going to use the tractor sensibly, I would pay more attention to the max. lift capacities than the recommended max. per implement. Still, it is important to observe the differing lift capacities at differing distances behind the hitch (a box blade has its center of gravity closer to the 3ph than a brush hog does, therefore the tractor can lift a heavier box blade than it can a brush hog).