BJM Pumps KZN-HYD6R - Manual (Page 4)

5
HYDRAULIC FLOWS
Hydraulic circuits must be open center, single direction and have an unrestricted return
flow from the hydraulic motor to the oil reservoir.
Pump Model
Input Flow (GPM) Max Pressure (PSI)
KZN-HYD3 (R) 10 2500
KZN-HYD4(R) 15 2500
KZN-HYD6(R) 25 2500
Operating this unit at pressures or flows in excess of those listed above or connecting
this unit to a closed center or reversing circuit will cause damage to the unit and will
void the warranty!
Please review the enclosed hydraulic schematic(s). If you are not sure if the hydraulic
power source being used to drive this pump is properly sized or connected, call BJM
Pumps, LLC.
Please read and understand this manual BEFORE you attempt to operate this pump.
*Note: Specifications subject to change without notice.
Note: Generally, hydraulic motors that run with flows and pressures less than 40 gpm
and 3000 psi can run without case drain. Larger motors are more subject to the
development of internal pressure due to inherent “ability” to allow more bypass
pressure and oil across the internal clearances. This combines with the larger exposed
surface area of the internal seals in the larger motor to make the risk of seal damage
significant enough to require a third line. (KZN-HYD models do not require a third line).
If needing more than 150 feet on the hydraulic hose, we suggest the next size up in
return hydraulic line to help evacuate the internal motor pressure which is present for a
longer period of time due to the extended run of the hose.