Product Overview
The P7600-F160NM467 6G and P3100B367AHNJ20-14AQZA07-1 are high-pressure external gear pumps manufactured by PERMCO in the United States. PERMCO is a leading global manufacturer of high-pressure hydraulic gear pumps, gear motors, flow dividers, and intensifiers. PERMCO high-pressure gear pumps utilize standardized, universal, and serialized design technology, enabling the same series to be configured into multi-pump combinations with different displacement options. A variety of port configurations, mounting flanges, and shaft extensions are available to meet user requirements.
P7600-F160NM467 6G belongs to the 7600 Series, PERMCO‘s large-displacement heavy-duty roller bearing gear pump series, with displacements ranging from 66.3 to 198.8 cc/rev. The 7600 Series features a heavy-duty roller bearing design with a large-frame cast iron housing, offering working pressures up to 207 bar (3,000 psi), peak pressures of 241 bar (3,500 psi), and speeds from 600 to 2,400 rpm. The series is widely used in loaders, dump trucks, garbage trucks, winches, and mining machinery for heavy-duty applications.
P3100B367AHNJ20-14AQZA07-1 belongs to the 3100 Series, PERMCO‘s small-displacement high-pressure roller bearing external gear pump. With displacements ranging from 16.4 to 65.5 cc/rev, rated pressures of 2,500 psi (17.2 MPa), and peak pressures of 3,000 psi (20.7 MPa), the series operates at speeds from 600 to 2,400 rpm. It is widely used in trucks, sanitation vehicles, agricultural machinery, and small to medium construction equipment.
As original specification models within the PERMCO 7600/3100 lines, these products enable direct form-fit-function interchangeability with original PERMCO units—no modifications to piping or mounting interfaces required. Our replacement solutions strictly adhere to PERMCO technical standards and undergo 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products.
Technical Specifications
Model 1: P7600-F160NM467 6G (7600 Series)
Applicable Model:
Model Code Breakdown (per PERMCO 7600 Series naming convention):
P7600: Series code, P = Pump, 7600 = 7600 Series
F: Mounting flange type
160: Displacement code (160 cc/rev)
NM467: Rotation, shaft, and port configuration code
6G: Specific configuration identifier
Series Technical Specifications (per PERMCO official documentation):
Product Series: PERMCO 7600 Series Large Displacement Gear Pump
Pump Type: External Gear Pump
Housing Material: High-Strength Cast Iron, Doweled Construction
Gear Material: High-Strength Alloy Steel
Bearing Type: Heavy-Duty Roller Bearings
Displacement Range: 66.3 – 198.8 cc/rev (4.04 – 12.10 in³/rev)
Rated Operating Pressure: 207 bar (3,000 psi)
Peak Pressure: 241 bar (3,500 psi)
Speed Range: 600 – 2,400 rpm
Flow Rate (@1,000 rpm): 17.5 – 52.4 GPM
Operating Temperature Range: -20°C to +82°C (mineral hydraulic oil)
Fluid Compatibility: Mineral Hydraulic Oil, Water-Glycol
Recommended Filtration: 10 μm (β200)
Seals: NBR Standard, FKM Optional
Port Connections: SAE Flange, ORB Thread
Weight: Approx. 50 – 60 kg
This Model (P7600-F160NM467 6G) Detailed Specifications (estimated based on 7600 Series parameters):
Geometric Displacement: Approx. 160 cc/rev
Rated Operating Pressure: 207 bar (3,000 psi)
Peak Pressure: 241 bar (3,500 psi)
Speed Range: 600 – 2,400 rpm
Theoretical Flow (@1,000 rpm): Approx. 160 L/min
Rotation Direction: Per specific configuration
Housing Material: High-Strength Cast Iron
Bearing Type: Heavy-Duty Roller Bearings
Model 2: P3100B367AHNJ20-14AQZA07-1 (3100 Series)
Applicable Model:
Model Code Breakdown (per PERMCO 3100 Series naming convention):
P3100: Series code, P = Pump, 3100 = 3100 Series
B: SAE Type B Mounting Flange
367: Displacement code
AHNJ20: Shaft, rotation, and seal configuration
14AQZA07-1: Port and specific configuration code
Series Technical Specifications (per PERMCO official documentation):
Product Series: PERMCO 3100 Series High-Pressure Gear Pump
Pump Type: External Gear Pump
Housing Material: High-Strength Cast Iron, Doweled Construction
Gear Material: High-Strength Alloy Steel
Bearing Type: High-Pressure Roller Bearings
Displacement Range: 16.4 – 65.5 cc/rev (1.00 – 4.00 in³)
Rated Operating Pressure: 17.2 MPa (2,500 psi)
Peak Pressure: 20.7 MPa (3,000 psi)
Maximum Speed: 2,400 rpm
Speed Range: 600 – 2,400 rpm
Maximum Flow Rate: Approx. 64 L/min
Operating Temperature Range: -20°C to +82°C (mineral hydraulic oil)
Fluid Compatibility: Mineral Hydraulic Oil, Water-Glycol, Emulsion Fluids
Volumetric Efficiency: ≥ 90%
Weight: Approx. 8 – 12 kg
This Model (P3100B367AHNJ20-14AQZA07-1) Detailed Specifications (estimated based on 3100 Series parameters):
Geometric Displacement: Approx. 36.7 cc/rev (displacement code 367)
Rated Operating Pressure: 17.2 MPa (2,500 psi / 172 bar)
Peak Pressure: 20.7 MPa (3,000 psi / 207 bar)
Speed Range: 600 – 2,400 rpm
Rotation Direction: Per specific configuration
Housing Material: High-Strength Cast Iron
Bearing Type: High-Pressure Roller Bearings
Key Technical Advantages
1. Heavy-Duty Roller Bearing Design — Long Service Life and High Reliability
Both the PERMCO 7600 and 3100 Series feature heavy-duty roller bearing construction rather than traditional sleeve bushings. The roller bearing design enables the pumps to withstand higher radial and shock loads, extending service life by approximately 30% compared to bushing-type designs under continuous heavy-load cyclic operation. This makes them particularly suitable for construction machinery applications such as loaders, dump trucks, and garbage compactors that experience frequent start-stop and high-impact conditions.
2. Pressure-Balanced Wear Plates — High Volumetric Efficiency
Utilizing pressure-balanced floating side plates, these pumps achieve automatic clearance compensation. This design ensures optimal clearance between gear faces and side plates under all operating conditions, effectively minimizing internal leakage. The 3100 Series achieves volumetric efficiency ≥ 90%, while the 7600 Series maintains high efficiency even under heavy-duty conditions.
3. High-Strength Cast Iron Housing with Doweled Construction — Superior Durability
Both the 7600 and 3100 Series feature high-strength cast iron housings with doweled construction. This design ensures dimensional stability and resistance to deformation under high-pressure conditions. Gears and shafts are manufactured from high-strength alloy steel, quenched and precision ground for superior wear and impact resistance.
4. Modular Design — Flexible Multi-Pump Configurations
PERMCO gear pumps utilize standardized, universal, and serialized design technology, enabling the same series to be configured into multi-pump combinations with different displacement options. A variety of SAE-standard port configurations, mounting flanges, and shaft extensions are available. Through dedicated intermediate housings, rear covers, front covers, and adapter shafts, multi-pump combinations of different series and displacements can be assembled.
5. 100% Factory Tested — Quality Assurance
All PERMCO gear pumps undergo 100% factory testing. Through rigorous testing that simulates actual operating conditions, every pump is verified to meet design performance standards before delivery.
Application Areas
7600 Series (P7600-F160NM467 6G)
Loaders: Wheel loader hydraulic working systems
Dump Trucks: Hydraulic hoist systems
Garbage Trucks: Sanitation vehicle hydraulic systems
Winches: Hydraulic drive for various winch applications
Mining Machinery: Hydraulic systems for heavy mining equipment
Lubrication Trucks: Hydraulic systems for lubrication vehicles
3100 Series (P3100B367AHNJ20-14AQZA07-1)
Trucks: Hydraulic systems for various truck applications
Sanitation Vehicles: Street sweepers, cleaning vehicle hydraulic systems
Agricultural Machinery: Tractors, harvesters, and other agricultural equipment
Small to Medium Construction Equipment: Small to medium loaders, excavator hydraulic systems
Expert Maintenance Tips
1. Installation Precautions
PERMCO gear pumps are uni-directional rotation pumps—verify that the system‘s required rotation direction matches the pump’s identification marking before installation.
Ensure coaxial alignment between the pump and drive shaft; flexible couplings are recommended to avoid radial loads on the pump shaft.
The suction line diameter must not be smaller than the pump inlet port to prevent cavitation.
The 7600 Series pump is heavy (approx. 50–60 kg)—ensure the mounting bracket has adequate load capacity.
2. Fluid Management
Use anti-wear hydraulic oils conforming to ISO VG 32 / VG 46 / VG 68 standards.
System fluid cleanliness must meet recommended standards, with 10 μm (β200) filtration recommended.
Operating temperature should be maintained within -20°C to +82°C.
When using water-glycol fluids, maximum operating temperature must not exceed 57°C.
Prime the pump by filling the housing with hydraulic fluid through the suction port before initial start-up. Never run the pump dry.
3. Start-Up & Commissioning
Use jog start method for initial start-up; verify correct rotation direction before continuous operation.
Allow the pump to run under no-load (low pressure) conditions for 2-3 minutes to purge air and ensure proper lubrication.
Gradually increase to operating pressure while monitoring noise, temperature, and system pressure for normal operation.
4. Routine Maintenance
PERMCO gear pumps themselves are maintenance-free; however, regular maintenance of the entire hydraulic system is essential for trouble-free pump operation.
Inspect system fluid cleanliness and condition every 1,000-2,000 operating hours.
Regularly replace return line filters and suction strainers to prevent contaminant ingress into the pump body.
