Roto-Mix 425, Operator'S Manual

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TRACTOR HYDRAULIC SYSTEM RECOMMENDATIONS
10 GPM Minimum 15 GPM Maximum
1200 to 1600 PSI Operating Range
Hydraulic system should be self purging.
TRUCK RECOMMENDATIONS
Minimum engine horsepower - 200 hp net @ 2000 rpm (total hp required) to mix load and move vehicle)
Engine to Ground Ratio - The engine to ground ratio is obtained by multiplying the transmission
low gear ratio times the rear axle ratio. For best results, we recommend
an engine to ground ratio of 50 to 1.
Transmission - The first choice transmission would be an Allison MT 653.
PTO - The first choice of PTO is a hydraulic shift PTO ("Hotshift") rated at 300 ft-lbs
output torque with a pressurized lubrication system. Rotation should be of
engine rotation and at a percentage of engine speed of approximately 130%.
Truck Minimum GVWR - 32,900 lbs GVWR necessary to carry fully loaded mixer.
Rear Axle Minimum Capacity 21,900 lbs (single axle)
Front Axle Minimum Capacity - 11,000 lbs
Frame - 1,749,000 in-lb resistive bending moment
Cab to Axle:
Model 425 - 108 in
Model 500 - 120 in
Model 575 - 138 in
Auxiliary Hydraulic System - 10 GPM minimum
- 15 GPM maximum
- 1200 to 1600 psi operating range
- Hydraulic System Should Be Self Purging
A high flow, "Feed Lot", radiator is desirable as it is easier to keep clean.
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