Why Choose Our Pump Motor Housing
- 27 years of experience in manufacturing pump motor housing
- Use 304/316L to make pump motor housing
- 100% Air Testing and Hydrostatic Test
- Provide Spectrometer Analysis
- Provide Non-Destructive Testing
- Provide 3D Rapid Prototyping
- Provide Precision Geometric Control
Pump Motor Housing Foundry in China
As a professional investment casting foundry in China, we are committed to providing you with custom, fully machined pump motor housings made of 304/316L (CF8/CF3M) stainless steel that offer high precision, standard dimensional tolerances, high corrosion resistance, and high airtightness. Over the past 27 years, we have established long-term, stable partnerships with nine companies, achieving an annual output value of $8 million.
We have also helped numerous clients resolve issues related to pump motor housings. For example, by optimizing the gating system, we have addressed the problem of cooling fins being too thin, which previously led to insufficient filling and adversely affected both appearance and heat dissipation.
If you are facing similar design challenges or looking to optimize your next project, contact us today to discuss your custom requirements.
Pump Motor Housings We Make
Features an investment-cast vertical enclosure with a top-mounted box, optimizing pump system footprint and layout.
Equipped with a side-mounted junction box and reinforced base, designed for high-stability horizontal canned motor pumps.
Featuring integrated dual-wall cooling channels, ensuring highly efficient motor operation under high-temperature conditions.
Why do you need pump motor housings made from 304/316L stainless steel?
The passivation film on the stainless steel surface effectively protects the pump motor housing from corrosive media, and the 316L grade significantly reduces the probability of intergranular corrosion and pitting corrosion. Effectively prevents rust on the pump motor housing.
Both 304 and 316L are austenitic stainless steels and are non-magnetic after solution heat treatment. When the motor generates a strong magnetic field, the pump motor housing made of these materials will not interfere with internal operation, ensuring system efficiency.
304 and 316L stainless steel possess exceptional impact toughness, so pump motor housings made of these materials will sustain only minor dents when struck, ensuring the internal motor continues to operate even under such conditions.
304 and 316L are materials certified to meet FDA/3A sanitary standards. Their smooth, bacteria-resistant surfaces ensure that the pump motor housings made of them do not leach iron ions that could contaminate the medium and can withstand frequent cleaning.
Precision Geometric Control
The pump motor housing has extremely strict dimensional tolerance requirements. If the coaxiality of the housing’s inner bore, the spigot fit, and the bearing bores is not precise, the internal motor can easily rub against the housing and catch fire. We use HEXAGON coordinate measuring machines to ensure that the coaxiality of these three components is within 0.03 mm. This allows your motor to run more smoothly and quietly while eliminating high-frequency electromagnetic noise at the source, resulting in a quiet pump casing.
Standard Material Control
Changes in the composition of stainless steel directly affect the properties of pump motor housings. If the molybdenum or ferrite content is not precisely controlled, the corrosion resistance and the non-magnetic properties of stainless steel pump motor housings will be significantly reduced. We use a spectrometer to ensure that the internal material meets specifications both before casting and after heat treatment, ensuring that the properties of the stainless steel pump motor housing remain unaffected. This greatly reduces the possibility of motor shutdowns caused by rust or electromagnetic heating, which could otherwise affect pump operation.
Rigorous Quality Assurance
Without rigorous quality inspection, pump motor housings may develop numerous quality issues during operation, including leaks, motor burnout, and sudden fractures. We conduct 100% airtightness testing, hydraulic testing, and non-destructive testing on all cast pump motor housings to ensure that the castings are free of internal defects such as shrinkage, porosity, and hot cracks. This guarantees the pump motor housing’s excellent airtightness and toughness. Through rigorous quality assurance, we can minimize quality risks before shipment and prevent sudden fractures and significant financial losses for you.
Certified to Meet Global Standards for High-Pressure Equipment
Your Reliable Manufacturing Partner for Pump Motor Housing
With 27 years of precision investment casting experience, 18 years of precision CNC machining experience, and 11 years of mold development experience, we have full casting capabilities, including customizing pump motor housings to your specific designs.
Moreover, as a one-stop foundry, we can provide you with high-quality pump motor housings. For the near-net shape properties of investment casting, we have resolved intergranular corrosion during the welding of components such as cooling fins and mounting feet in pump motor housings, providing you with high-precision pump motor housings that offer excellent heat dissipation.
Diverse Applications for Stainless Steel Pump Motor Housing
In the submersible industry, the pump motor housing must be fully submerged in water along with the pump body. If it is made of iron, it will rust quickly. Our stainless steel pump motor housing, with its corrosion resistance and our 100% airtightness testing, effectively prevents internal motor electrical leakage caused by corrosion.
In the chemical industry, pump castings are used to transport highly corrosive liquids; therefore, the pump motor housings are also exposed to corrosion from chemicals in the air. Our 316L pump motor housings offer exceptional corrosion resistance, ensuring that the motors remain integrity exposure to these corrosive chemicals.
In the food industry, pump motor housings must withstand rigorous sanitization while maintaining high surface purity. Our stainless steel pump motor housing meets the highest hygiene standards, and the passivation film ensures the surface does not react with disinfectants, thereby avoiding food contamination.
Pump motor housings used in ballast or fire pumps on offshore drilling platforms are constantly exposed to seawater; ordinary metal pump motor housings would quickly rust. Our 316L pump motor housings offer exceptional resistance to pitting corrosion, completely preventing seawater corrosion and ensuring the motor operates successfully.
Your Reliable Manufacturing Partner in China
In the past, the quality of the pump motor housings supplied by the foundry we worked with was always inconsistent, and we didn’t even know if they conducted any quality inspections. Until we started working with Pingheng Machinery, we noticed that they included a quality inspection report with every shipment of castings. The quality of their castings far exceeded my expectations and significantly extended our maintenance intervals.
——Dave Harrison, Director of Quality Assurance
Cooperating with Pingheng Machinery is very comfortable. All we have to do is provide the drawings, and they handle everything, including mold development, machining, and even surface treatment. We don’t have to worry about anything, and I think we’ll continue working together for a long time.
——Sarah Jenkins, Lead Procurement Engineer
They are all austenitic stainless steels. The main difference between them is that 316 stainless steel contains 2％-3％ molybdenum, which gives the 316 pump motor housing greater resistance to pitting corrosion than 304. 316L is an ultra-low-carbon variant of 316; it does not exhibit carbide precipitation at high temperatures, thereby reducing the possibility of corrosion in a pump motor housing made from it and ensuring maximum sealing and durability during long-term operation.
If you want to know more about this, please click “304 vs 316 Stainless Steel – the Ultimate Guide for Beginners and Experts”
Yes, we offer 3D rapid prototyping services for efficient small-batch customization of pump motor housing, with delivery within 7–10 days.
Using the investment casting process, while ensuring a high yield rate and uniform wall thickness, the cooling fins in our pump motor housings can be manufactured with a thickness of 2.0- 2.5 mm.
This is because pump motor housings are typically used in submersible pumps and other pump castings that have direct contact with liquid. Water-cooling is more efficient than air convection cooling. Furthermore, through expendable mold casting in the investment casting process, we can cast thin cooling fins onto the housing. This increases the contact area between the housing and the flowing water, greatly compensating for the low thermal conductivity of stainless steel.
We use a one-stop customization service, from mold design and fabrication to CNC machining. In this process, our pump motor housings are typically delivered within 45 days.
