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SnowRidge · 01-08-2009, 08:49 AM

Mith, the deck mounted hydraulic motor that came on my 48" brush cutter was a re-branded M+S Hydraulic MLHR 50 wheel motor. M+S Hydraulic is a Bulgarian company. The motor seized, and I replaced it with a Parker TJ0050US080AAAA wheel motor, which has roughly the same specs. The Parker was built to order for me. Nobody had them in stock.

I strongly suggest you do not directly deck mount the motor, as Power Trac is now doing with the 48" brush cutter. In my opinion, the shock loading is what caused my motor to fail very early in life. The older models have a different motor mounted on a bracket. The motor is coupled to a blade hub by a Lovejoy coupler. It provides at least some isolation from shock loads. The variant I have has none.

It is easy to find straight shaft motors of the right size for the old style brush cutters. It is very difficult to find tapered shaft wheel motors for the current models, other than the M+S model that failed, which is quite expensive. The Parker was much cheaper, but must be built to order, and most US suppliers don't catalog it.

I did not want to go with a larger displacement wheel motor, which are much more readily available, as it would have produced unacceptably slow blade speeds.

01-08-2009, 08:49 AM	#20 (permalink)
SnowRidge Elite Member Join Date: Jul 2003 Location: East Tennessee Posts: 3,092	Re: Mower deck hydraulic motor. Mith, the deck mounted hydraulic motor that came on my 48" brush cutter was a re-branded M+S Hydraulic MLHR 50 wheel motor. M+S Hydraulic is a Bulgarian company. The motor seized, and I replaced it with a Parker TJ0050US080AAAA wheel motor, which has roughly the same specs. The Parker was built to order for me. Nobody had them in stock. I strongly suggest you do not directly deck mount the motor, as Power Trac is now doing with the 48" brush cutter. In my opinion, the shock loading is what caused my motor to fail very early in life. The older models have a different motor mounted on a bracket. The motor is coupled to a blade hub by a Lovejoy coupler. It provides at least some isolation from shock loads. The variant I have has none. It is easy to find straight shaft motors of the right size for the old style brush cutters. It is very difficult to find tapered shaft wheel motors for the current models, other than the M+S model that failed, which is quite expensive. The Parker was much cheaper, but must be built to order, and most US suppliers don't catalog it. I did not want to go with a larger displacement wheel motor, which are much more readily available, as it would have produced unacceptably slow blade speeds.