KP30.38、 KP30.43 series gear pump

Casappa KP series gear pump:

CASAPPA KP30.38 and KP30.43 series gear pumps belong to the KAPPA 30 cast iron gear pump family, designed for high pressure and large flow requirements, suitable for construction machinery, agricultural machinery, industrial equipment and other fields.The following is a detailed analysis based on the latest technical data：
###1. Core technical parameters
Model: KP30.38
Displacement: 39.27 cm2/rev (2.40 in2/rev)
Continuous pressure: 250 bar (3625psi), system pressure 270 bar (3915 pressure level psi), peak pressure 290 bar (4205 psi)
Speed range: maximum speed 3000 rpm, minimum speed 350rpm
Efficiency: Volumetric efficiency >95%, mechanical efficiency>90%
Structure: Double-body cast iron shell, strong impact resistance
Weight: About 15kg (estimated value, depending on the configuration)
Model: KP30.43
Displacement: 43.98 cm2/rev (2.68 in2/rev)
Continuous pressure: continuous pressure 230 bar (3335 psi), system pressure 250 bar (3625psi), peak pressure 270 bar (3915 psi)
Speed range: maximum speed 3000rpm, minimum speed 350rpm
Efficiency: Volumetric efficiency >95%, mechanical efficiency>90%
Structure: Double-body cast iron shell, strong impact resistance
Weight: About 17 kg (estimated value, depending on the configuration)

###2. Performance characteristics and technological innovation
1. **High voltage reliability**
Three-dimensional modeling and virtual simulation are used to optimize gear meshing, and cast iron material and high-precision machining ensure continuous operation at a continuous pressure of 250-270 bar for more than 1000 hours without failure.The pressure level of KP30.38 is slightly higher than that of KP30.43, which is more suitable for medium and high pressure conditions.
2. **High-efficiency and energy-saving design**
Internal leakage is reduced through the pressure balance structure, and energy consumption can be reduced by 10%-15% with low-viscosity hydraulic oil (ISO VG 32-68).For example, at a speed of 3000 rpm, the theoretical flow rate of KP30.43 can reach 131.94 L/min, which is suitable for equipment with large flow requirements.
3. **Multi-pump combination ability**
Support cascade installation (series or parallel), which can expand the system flow.For example, two KP30.38s in parallel can achieve a total displacement of 78.54 cm3/rev, which meets the needs of simultaneous operation of multiple valves in construction machinery.
4. **Low noise operation**
The optimized tooth shape design makes the noise level lower than 80 dB(A), which is significantly better than similar products and is suitable for noise-sensitive industrial environments.

###3. Application scenarios
1. **Construction machinery**
-The boom/bucket rod/bucket of excavators and loaders are hydraulically driven, and the large flow characteristics of KP30.43 can shorten the operating cycle time.
-The lifting/rotating mechanism of the crane, the high pressure performance of KP30.38 supports precise control of heavy objects.
2. **Agricultural machinery**
-The cutting table of the combine harvester is raised and lowered, and the threshing drum is driven, which is adapted to the PTO power output (540/1000 rpm).
-The hydraulic suspension system of the tractor supports multi-way valve control of agricultural tools (such as plows and planters).
3. **Industrial equipment**
-The mold closing/injection molding unit of the injection molding machine, the high pressure stability of KP30.38 ensures the accuracy of the product.
-The master cylinder of the press is driven, and the pressure-speed closed-loop control is realized with a proportional valve.
4. **Mobile machinery**
-The hydraulic tail plate of the truck and the fork lift of the forklift are adapted to the compact installation requirements of the on-board hydraulic system.
-Ship deck machinery (such as winches and cranes), cast iron materials that are resistant to salt spray corrosion ensure long-term reliability.