Advantages of Cast Iron Gear Pumps

Gear pumps, as the core components of hydraulic systems, are widely used in agriculture, construction machinery, industrial automation and other fields. Among them, cast iron gear pumps are favored by the majority of users because of their robustness, pressure resistance and high efficiency.
Cast iron gear pumps have several significant advantages:
1、Compact structural design
Adoption of gear meshing transmission principle, highly integrated structure, compact size, especially suitable for space-constrained installation scenarios (such as mobile equipment or dense industrial layout).
2、Strong performance
Strong self-priming capability
Excellent sealing of gear mesh, can form vacuum suction in a short time.
Low noise and smooth operation
Optimization of double arc sine tooth shape reduces meshing shock and oil trapping effect, and the operating noise is lower than 60dB(A).
Rigid cast iron housing effectively absorbs vibration to ensure long-term operational stability.
High load resistance
Gears and drive shafts are tempered by heat treatment (such as carburizing quenching), surface hardness of HRC55-60, can withstand short-term pressure fluctuations (peak pressure up to 1.5 times the rated value).
3、Wide range of application
Strong viscosity compatibility
Designed for lubricating media, the best conveying viscosity is 5~1500cSt, covering hydraulic oil, lubricating oil, fuel oil, etc., suitable for drilling, construction machinery and other hydraulic systems.
Wide temperature range operation
The standard model adapts to -20℃~80℃ medium temperature, and the special design (such as reinforced seals, high temperature bearings) can be extended to 120℃ to meet the needs of high temperature oil transportation.
Low coefficient of thermal expansion of cast iron reduces internal leakage caused by high temperature deformation.
4、Convenient maintenance
Modularized maintenance design
Pump body, end cover, gear set adopts standardized interface, disassembling and assembling without special tools, replacing seals or bearings shortens the time consuming by more than 40%.
Multiple safety protection
Built-in relief valve: automatic pressure relief in case of overpressure (the set pressure is 1.1-1.3 times of the rated value), protecting the pump body and driving equipment.
Redundant design of shaft seal: standard mechanical seal + skeleton oil seal combination, the leakage rate is less than 5 drops / minute, in line with environmental norms.
5、High cost performance
Cast iron material has excellent ductility and cutting performance, suitable for precision casting and batch processing, significantly reducing processing difficulties and manufacturing costs. Design life of 10,000-20,000 hours (depending on working conditions), suitable for long-term stable operation in low and medium pressure scenarios.
6、Brand and quality
Choose LSTY and other well-known brands to ensure the quality and performance of the pump. In addition, our brand provides perfect after-sales service to ensure that users can get timely technical support and maintenance services.