Backhoe PTO/RPM for backhoe
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txdon
Super Star Member
The speed for the loader is dependent on the application and the operator's level of experience.
Don't know about the Bush Hog BH.
Don't know about the Bush Hog BH.
DK35vince
Super Member
To high of RPM's may make the hoe to fast and jerky, to slow of RPM's and the hoe will be slow.
Vary the RPM's till you find the backhoe speed you are comfortable with and use it.
Vary the RPM's till you find the backhoe speed you are comfortable with and use it.
Stef
Platinum Member
FIW, I have a B3030 equipped with a BH75. When I use the backhoe my RPM is around 2000. That way, it's neither too slow nor too fast. I have to admit though, at 2000 rpm, if the operator isn't used to the unit it can be jerky (I'm thinking about swinging and moving the dipperstick together). I think the best way to do it is to begin slowy and raise the rpm progressively to a point where you feel comfortable.
About the loader, it's different. You adjust the rpm to the job you're doing. If you want full power and speed then you raise the rpm, but for smooth operations you lower the rpm.
About the loader, it's different. You adjust the rpm to the job you're doing. If you want full power and speed then you raise the rpm, but for smooth operations you lower the rpm.
RodgerF
Silver Member
- Joined
- Jul 8, 2004
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- S.W. PA
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- New Holland TC 30, Kubota L3901DT, RK24 with FEL and mower, Massey Ferguson 35 and 2 Farmal Cubs
I run a Bush Hog 750 on the back of a TC30 using the tractor hydraulics. I find 12-1300 rpms is about right for my experience level. The hoe can do everything is designed to do at that rpm, just a little slower. If yours is anything like mine watch the boom swing, it's quick.
Rodger
Rodger
Stef
Platinum Member
RodgerF, definitively the boom swing is, IMHO, the trickiest movement. Depending on the rpm it can move very quickly. I pay good attention when I'm working with my backhoe with somebody on the ground. Most of the time, folks around it don't seem to remember how quick an accident can happen.
v8dave
Platinum Member
I've posted this a few times before, I hope others don't mind.
For a beginning backhoe operator, the backhoe will be jerky to operate at first. Try the first ten or so hours of use at ~75% of PTO speed, which on a B7610 is around 2,000 rpm, maybe even 1,800 RPM for the first several hours. This is just to keep the bucking down as you learn. What happens is at first you tend to operate only one control/spool/valve/cylinder at a time and all the pump power goes to that one cylinder and it operates real fast--too fast--especially in swing and boom lift. So, running at slower speed, things slow down and you get used to feathering the valves and doing multiple operations simultaneously.
As experience comes you begin to do multiple operations simultaneously and the backhoe will seem too slow. It actually will be slower because the pump power is spread across several functions. You can now speed up the engine and get faster cycle times. When you can "rake" the ground level toward you with the bucket teeth, you've gotten the feel of how to feather the valves and multiple valve operation down.
One more tip: You will be tempted to operate the curl and boom or dipper simultaneously in hard to dig situations. This actually decreases the power available as the boom or dipper will stall and open the pressure relief valve, dumping hydraulic fluid and power. The bucket curl is the most powerful of the controls, use it alone in tough dig situations.
Happy digging.
For a beginning backhoe operator, the backhoe will be jerky to operate at first. Try the first ten or so hours of use at ~75% of PTO speed, which on a B7610 is around 2,000 rpm, maybe even 1,800 RPM for the first several hours. This is just to keep the bucking down as you learn. What happens is at first you tend to operate only one control/spool/valve/cylinder at a time and all the pump power goes to that one cylinder and it operates real fast--too fast--especially in swing and boom lift. So, running at slower speed, things slow down and you get used to feathering the valves and doing multiple operations simultaneously.
As experience comes you begin to do multiple operations simultaneously and the backhoe will seem too slow. It actually will be slower because the pump power is spread across several functions. You can now speed up the engine and get faster cycle times. When you can "rake" the ground level toward you with the bucket teeth, you've gotten the feel of how to feather the valves and multiple valve operation down.
One more tip: You will be tempted to operate the curl and boom or dipper simultaneously in hard to dig situations. This actually decreases the power available as the boom or dipper will stall and open the pressure relief valve, dumping hydraulic fluid and power. The bucket curl is the most powerful of the controls, use it alone in tough dig situations.
Happy digging.
Stef
Platinum Member
v8dave, I'd like to know what's the backhoe you're using on which tractor. I ask because I have a B3030 equipped with a BH75. I have a lot of hours of experience with a backhoe. With my former BX23 I was using the backhoe at full rpm (3200 I think) when digging and it seems to me that the backhoe was a bit slow to my taste. Now with a B3030+BH75 I run between 2000 and 2200 when digging and it's pretty fast. Fast enough that I never tried to use it at 2600 (PTO rpm). But now that you mention it, I'll try that next time. I'm pretty sure that if I time myself digging a trench, let's say 100', at 2100 or 2600 I'll see no difference. Maybe this is a question of hydraulic flow rate. In your exemple a B7610 has 7 gpm and a B3030 has 9.1 gpm.
v8dave
Platinum Member
Stef, I sorry I didn't see your reply/question until today when I was doing a search for one of my posts.
I have a B4672 backhoe. When I swing the backhoe back to the dig from the spoils pile, I am also extending the boom, extending the dipper and moving the bucket. With all this going on, the swing back speed was too slow for me at 1,800 rpm. So, I now regularly run the backhoe at PTO speed to speed things up.
I have a B4672 backhoe. When I swing the backhoe back to the dig from the spoils pile, I am also extending the boom, extending the dipper and moving the bucket. With all this going on, the swing back speed was too slow for me at 1,800 rpm. So, I now regularly run the backhoe at PTO speed to speed things up.