Product Overview
The 26003-LZJ, 26002-LZB, 26001-LZG, 26006-RZG, and 26005-LZC are aluminum external gear pumps from the Eaton Vickers 26 Series 26000 model family. This series is renowned for its low-noise, high-efficiency, and high-reliability performance.
The 26000 series features a high-strength aluminum alloy housing with displacements ranging from 6.6 to 30.6 cm³/rev (0.40 – 1.87 in³/rev) . Rated pressure is 210 bar (3000 psi) with maximum speeds of 3600 rpm. The series is designed for retrofit applications replacing B1 and B2 gear pumps, offering additional shaft, port, and mounting options for easy conversion. Compared to earlier 10-tooth designs, the 13-tooth gear profile minimizes flow ripple, significantly reducing noise and vibration.
Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine Vickers 26000 series pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing to validate pressure-flow-efficiency performance curves.
Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with Eaton Vickers original equipment. All Vickers brand names and model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer and is not an original Vickers product.
Technical Specifications
26000 Series General Specifications
Brand Series: Eaton Vickers 26 Series 26000 Model
Product Type: Fixed Displacement External Gear Pump
Housing Material: High-strength aluminum alloy
Rated Pressure: 210 bar (3000 psi)
Intermittent Pressure: 240 bar (3500 psi)
Maximum Speed: 3600 rpm (26001–26006)
Minimum Speed: 750 rpm
Maximum Continuous Temp: 105°C (220°F)
Minimum Operating Temp: -29°C (-20°F)
Inlet Vacuum: 0.8 bar absolute
Mounting Flange: SAE A 2-Bolt Flange
Seals: Standard NBR
Model-Specific Specifications
26001-LZG
Displacement: 6.6 cm³/rev (0.40 in³/rev)
Flow (@3600 rpm): 24.3 L/min (6.4 GPM)
Input Power (@max pressure & speed): 9.7 kW (13.0 hp)
Rotation: Left-hand (Counterclockwise / CCW)
Shaft: 5/8″ Keyed shaft
Ports: SAE O-ring ports
26002-LZB
Displacement: 8.2 cm³/rev (0.50 in³/rev)
Flow (@3600 rpm): 29.6 L/min (7.8 GPM)
Input Power (@max pressure & speed): 11.9 kW (15.9 hp)
Rotation: Left-hand (Counterclockwise)
Shaft: 3/4″ 11-tooth splined shaft
Ports: SAE O-ring ports
Weight: Approx. 2.7 kg
26003-LZJ
Displacement: 9.5 cm³/rev (0.58 in³/rev)
Flow (@3600 rpm): 35.0 L/min (9.2 GPM)
Input Power (@max pressure & speed): 14.1 kW (18.9 hp)
Rotation: Left-hand (Counterclockwise)
Shaft: 9T 16/32 splined shaft
Ports: SAE O-ring ports
Dimensions: L 128.3 mm × W 130 mm × H 130.9 mm
26005-LZC
Displacement: 13.8 cm³/rev (0.84 in³/rev)
Flow (@3600 rpm): 50.5 L/min (13.3 GPM)
Input Power (@max pressure & speed): 20.0 kW (26.8 hp)
Rotation: Left-hand (Counterclockwise)
Shaft: 19.05 mm (0.75″) straight shaft with key
Ports: SAE O-ring ports
Weight: Approx. 4.49 kg
26006-RZG
Displacement: 16.7 cm³/rev (1.02 in³/rev)
Flow (@3600 rpm): 54.7 L/min (14.4 GPM)
Input Power (@max pressure & speed): 22.0 kW (29.4 hp)
Rotation: Right-hand (Clockwise)
Shaft: SAE splined shaft
Mounting Flange: SAE A 2-Bolt Flange
Torque (@0 pressure): 4 Nm (36 lb-in)
Key Technical Advantages
1. 13-Tooth Gear Design – Ultra-Low Noise Operation
The 26000 series features a 13-tooth gear profile, compared to 10 teeth in previous designs, minimizing flow ripple and significantly reducing noise and vibration. Improved trap reliefs not only increase power but also keep oil flowing smoothly to reduce noise. Optimized trap relief areas help reduce pressure pulsation for low-noise operation while lowering input power requirements.
2. High-Strength Aluminum Alloy Housing – Lightweight Design
The high-strength aluminum alloy housing with aluminum end caps delivers significant weight savings over cast iron equivalents. The 26002-LZB weighs only approx. 2.7 kg, and the 26005-LZC approx. 4.49 kg—ideal for weight-sensitive mobile hydraulic equipment.
3. Precision Machining & Improved Bearing Lubrication – Long Service Life
High-precision shafts and gears improve mechanical efficiency, reduce wear, and extend pump service life. An improved bearing lubrication system uses inlet oil rather than high-pressure oil, increasing volumetric efficiency for more power output.
4. Field-Reversible Rotation – Maximum Installation Flexibility
An improved new wear plate allows simple field reversal of pump rotation direction. Rotation can be changed without additional parts, significantly simplifying inventory management and field adaptation.
5. Broad Speed & Temperature Operating Range
Supports a wide speed range of 750 to 3600 rpm, with operating temperatures from -29°C to +105°C. Maintains stable flow characteristics from cold start to high-speed continuous duty.
6. Wide Equipment Compatibility & 100% Drop-In Interchangeability
The 26000 series is designed for retrofit applications replacing B1 and B2 gear pumps. Additional shaft, port, and mounting options provide maximum flexibility for easy conversion. Delivers 100% drop-in interchangeability with genuine Vickers 26000 series pumps.
7. 100% Simulated Duty-Cycle Testing
Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at rated pressure and full speed range—ensuring zero-defect, plug-and-play performance upon installation.
Application Areas
Tractors & Harvesters: Agricultural machinery hydraulic systems
Machine Tools: Industrial machine tool hydraulic systems
Steering Circuits: Power steering hydraulic systems
Compactors & Sweepers: Municipal and sanitation vehicles
Rotary & Reel Mowers: Turf care equipment
Lift Trucks: Material handling equipment
Fan Drive Systems: Engine cooling systems
Auxiliary Work Circuits: Construction equipment auxiliary hydraulics
Expert Maintenance Tips
1. Fluid Cleanliness Control
Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. Install a ≤10 μm absolute filtration filter upstream of the inlet port to prevent particle contamination from damaging precision gear pairs and bearings.
2. Inlet Line Requirements
Keep suction lines short and straight with adequate diameter—not less than the port size. Inlet vacuum must not exceed 0.8 bar absolute to prevent cavitation from excessive inlet resistance. Recommended suction line flow velocity: ≤1.5 m/s.
3. Coupling Alignment Precision
Ensure pump shaft-to-drive shaft coaxiality deviation ≤0.05 mm and angular deviation ≤0.5° during installation. Flexible couplings are strongly recommended. If the drive involves sprockets or V-belt pulleys, an independent outboard bearing MUST be installed to protect the pump shaft.
4. First-Start Priming Procedure
Before initial startup, prime the pump by bleeding air through the drain port or a loosened outlet fitting. Perform 2–3 jog starts with the outlet open (no load) until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.
5. Rotation Direction Confirmation & Field Reversal
The 26000 series supports field reversal—open the pump, swap drive and idler gears, reposition the dowel pin, and reassemble without additional parts. Always verify that the drive motor/engine rotation matches the pump before installation.
6. Viscosity & Temperature Monitoring
Recommended operating viscosity: 5.7 – 45 SUS (approx. 5.7 – 45 cSt). Operating temperature range: -29°C to +105°C. During cold starts when viscosity is high, ensure adequate suction conditions or preheat the fluid.
