Knight Hawk Supply
Your One-Stop Hydraulic Source
Commercial Intertech Series 300 and 400 Pumps and Motors -- Repair Parts, Hydraulic Pumps, Motors, and Valves

Commercial’s P400 series of high pressure, fixed displacement gear pumps are available in single and multiple assemblies. These units are rated for service up to 4500 psi. They’re available in three models offering you a displacement range from 1.5 to 5.5 CIR. These units are cast from high-strength iron which provides the structural integrity needed at high pressures. Gear widths have been selected to keep shaft deflections and bearing loads within acceptable design limits. Body seals have been strengthened and the fastener pre-load increased to assure reliability under high pressure conditions. A wide variety of SAE B and C mounting flanges and drive shaft configurations are available. Porting is through SAE split flange or “O” ring fitting. Special hardened steel alloy gears with integral drive shaft run between pressure-balanced, bronze wear plates to make these rugged pumps highly efficient. Long shaft journals provide superior bearing surfaces and add to long service life. Pumps can be assembled for rotation in either direction.

Displacement per inch of gear
P430 1.97 CIR
P450 2.55 CIR
P465 3.60 CIR

Oil Recommendations
Commercial pumps work well on most good hydraulic oil as well as synthetic and fire resistant fluids. Some of these products require special seals.
Viscosity – 50 SUS min. @ operating temperature.
7500 SUS max. @ starting temperature
Viscosity index – 90 minimum
Analine point – 175 minimum
Additives – Foam depressant
Rust inhibitors
Maximum recommended system operating temperature
is 180° F. or 83° C.

Dimensional Data



315 Series - Special Assemblies
P315/M315 gears with various drive shafts.
P315 port end cover with built-in relief valve. Tandem use only - no inlet port available.
P315 port end cover with side ports up to 1 I/2" S.F. inlet.
P315 port end cover with integral priority valve. Built-in relief valve on primary circuit.
Clutch pump mount model available.

330 Series - Special Assemblies
P330 dual outlet pump bearing carrier that will accept a 2 1/2" S.F. inlet port.
P330/M330 gears with optional number of gear teeth (10 tooth gears are standard; 13 tooth gears are optional).
P330/M330 gears with various drive shafts and gear widths.
P330/315 piggyback.
P330 port end cover with side ports up to 2" S.F. inlet.
Narrow P330 dual rotation port end cover that accepts side and/or rear ports.
Narrow P330 port end cover that accepts side and/or rear ports.
P330 port end cover that accepts rear threaded ports.
P330 port end cover with integral priority valve. No relief valve on primary circuit.
P330 pad mount shaft end cover with two drive shafts.
P330 SAE "B" 2 bolt short shaft end cover.
FD330 flow divider assemblies.

350 Series - Special Assemblies
P350/M350 gears with optional number of gear teeth (10 tooth gears are standard; 13 tooth gears are optional).
P350/M350 gears with various drive shafts and gear widths.
P350/315 piggyback.
P350 add-a-pump port end cover with the ability to mount any pump that has an SAE "A" or "B" 2 bolt mounting flange and SAE "A" or "B" splined drive shaft.
P350 port end cover that is shorter and narrower than standard P350 PEC. Accepts 1 1/2"
diameter beaded inlet tube.
P350/M350 SAE "C" 4 bolt, ductile iron shaft end cover.
P350/M350 SAE "B" 2 bolt short shaft end cover.
FD350 flow divider assemblies.

365 Series - Special Assemblies
P365 bearing carriers with special porting arrangments accept 3" S.F. inlet ports.
P365/M365 gears with various drive shafts and gear widths.
P365/330 piggyback.
P365 add-a-pump port end cover with the ability to mount any pump that has an SAE "A" or "B" 2 bolt mounting flange and SAE "A" or "B" splined drive shaft.
M365 SAE "C" 4 bolt, compacted graphite shaft end cover.
FD365 flow divider assemblies.

Call, Fax or Email Knight Hawk Supply for more information on
Commercial Intertech parts and components