Hydraulic motors

[David the spud man]

Hi I need to change out a hydraulic motor and was wondering can anyone tell me whats the difference between smp (omp) and smr (omr) hydraulic motors both of them have similar measurements and specs I've attached a photo

 

[Fergieman]

 

[Mr Happy]

They are similar apart from the gear wheel sets are different. It depends on the application to which motor suits the application better.

 

[Bury the Trash]

Hi I need to change out a hydraulic motor and was wondering can anyone tell me whats the difference between smp (omp) and smr (omr) hydraulic motors both of them have similar measurements and specs I've attached a photo

i reckon go for an R one ,

 

[David the spud man]

They are similar apart from the gear wheel sets are different. It depends on the application to which motor suits the application better.

It's for a wood chipper they drive the feed rollers

 

[David the spud man]

They are similar apart from the gear wheel sets are different. It depends on the application to which motor suits the application better.

Would it make a difference which I get as I replaced one last year which I put the smr version on but learnt afterwards the omr version was on it

 

[David the spud man]

Sorry meant to say omp/smp version was on it originally and I replaced one with the onr/smr version

 

[Mr Happy]

It's for a wood chipper they drive the feed rollers

Definitely the Danfoss OMR motor as your application requires torque not speed.

 

[David the spud man]

Definitely the Danfoss OMR motor as your application requires torque not speed.

Thanks

 

[Bury the Trash]

Thanks

I expect you know it and its shown on them charts but obviously the capacity of the motror needs to fairly well match what you need for your use .... and as cc goes up (bigger size) speed slows down but torque increases at the same flow rate.
Knowing your pump flow output will help to select one or simply measuring / looking at the serial plate of the old one to see what it was on the machine before hand goes with out saying i guess.

 

[David the spud man]

I expect you know it and its shown on them charts but obviously the capacity of the motror needs to fairly well match what you need for your use .... and as cc goes up (bigger size) speed slows down but torque increases at the same flow rate.
Knowing your pump flow output will help to select one or simply measuring / looking at the serial plate of the old one to see what it was on the machine before hand goes with out saying i guess.

I have since ordered the smr version 250 the original was an smp250 it's on a woodchipper feed rate speed doesn't bother me torque is most important to me to pull in any odd shaped pieces. My orignal fear was that one might be for constant running and the other would be intermittent

 

[Mr Happy]

I have since ordered the smr version 250 the original was an smp250 it's on a woodchipper feed rate speed doesn't bother me torque is most important to me to pull in any odd shaped pieces. My orignal fear was that one might be for constant running and the other would be intermittent

Hope you don't mind me asking. What was the cost of the cost of the SMR 250 motor compared to the SMP?

 

[David the spud man]

€140+ vat for smr
€146+vat for smp
Just got it yesterday it was a good brand just can't think of the name of the top of my head these are euro prices