01Z 02Z 03Z Series Gear Pump | OEM Replacement High Pressure

Product Overview:

The 01Z, 02Z, and 03Z Series High-Pressure Hydraulic Gear Pumps are engineered as the vital power core for heavy-duty, high-load hydraulic systems. Designed for industrial B2B clients seeking the perfect equilibrium between premium performance and cost-efficiency, this series encompasses Group 1 (01Z), Group 2 (02Z), and Group 3 (03Z) displacements, including specific configurations like the 01ZBG08F117D, 01ZBO37F130D, and 01ZA011C442D. Our defining competitive edge is Absolute Interchangeability. These gear pumps boast mounting dimensions, shaft extensions, and port configurations that offer a 100% drop-in replacement for leading global brands such as Marzocchi, Casappa, and Rexroth. Furthermore, we mandate 100% simulated operating condition testing on every single unit before dispatch, guaranteeing leak-free, highly stable hydraulic power even in the most unforgiving industrial environments.

Technical Specifications:

• Product Series: 01Z (Group 1), 02Z (Group 2), 03Z (Group 3) External Hydraulic Gear Pumps

• Specific Model Codes: 01ZBG08F117D, 01ZBO37F130D, 01ZA011C442D

• Displacement Range: 1.1 cc/rev to 90.0 cc/rev (covering micro to heavy-duty applications)

• Rated Continuous Pressure: Up to 250 bar (3,600 psi)

• Peak Operating Pressure: Up to 280 bar (4,000 psi)

• Maximum Speed: 4,000 rpm (for 01Z series) / 3,000 rpm (for 03Z series)

• Control Method: Fixed displacement, open-loop circuit control

• Volumetric Efficiency: ≥ 95% (tested under rated working conditions)

• Material Construction: High-strength extruded aluminum alloy body with precision cast-iron end covers

• Weight Range: Approx. 1.2 kg (01Z Series) to 7.5 kg (03Z Series)

Key Technical Advantages:

• Seamless Drop-in Replacement: Engineered to strict international SAE, DIN, and European standards for flanges and splined/keyed shafts. They serve as ideal, highly economical replacements for expensive Western OEM pumps without requiring any system modifications.

• 100% Simulated Load Testing: We do not rely on batch sampling. Every 01Z/02Z/03Z series pump (including specific models like 01ZA011C442D) undergoes rigorous, automated testing under true rated pressures, peak pressures, and thermal shocks, ensuring zero out-of-box failures.

• Axial Clearance Compensation: Integrated floating thrust plates utilize system pressure to automatically adjust axial clearance. This dynamic compensation maintains a high volumetric efficiency (above 95%) and minimizes internal leakage, even during continuous 250 bar operation.

• Low Noise & Extended Lifespan: Precision-ground gear profiles combined with heavy-duty DU Teflon-coated bearings drastically reduce fluid pulsation and mechanical vibration. This design absorbs high radial loads, significantly extending the pump’s service life under severe conditions.

Application Areas:

Due to their compact footprint, high-pressure tolerance, and unmatched reliability, the 01Z 02Z 03Z series are heavily adopted across various mobile and industrial machinery:

• Mobile Equipment: Mini excavators, skid steer loaders, agricultural tractors, and combine harvesters.

• Material Handling: Industrial forklifts, aerial work platforms (AWPs), and tail lift systems.

• Industrial Machinery: Plastic injection molding machines, hydraulic power units (HPUs), and CNC hydraulic stations.

Expert Maintenance Tips:

• Maintain Fluid Cleanliness: Contamination is the leading cause of premature gear pump failure. We strongly advise maintaining an oil filtration level of ISO 4406 18/16/13 or better. Ensure your suction line is equipped with an adequately sized strainer.

• Air Bleeding on Startup (Prevent Cavitation): When installing models like the 01ZBO37F130D or after a fluid change, never start the pump under load. Jog the electric motor to bleed out trapped air in the lines before running at full RPM to prevent irreversible cavitation damage to the gears and thrust plates.

• Strict Shaft Alignment: During installation, verify that the concentricity between the pump shaft and the prime mover (motor/engine) flywheel is within a 0.1mm tolerance. Misalignment causes excessive radial stress, leading to immediate shaft seal leaks or bearing seizure.