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Home > Industrial Equipment & Components > Pump & Vacuum Equipment > Pump Parts > DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump

DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump

DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump thumbnail-3

DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump thumbnail-4

DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump thumbnail-5

DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump photo-1

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DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump photo-4

DFSS250-4N/4 Rotor Assembly Wear Resistant Rotor Component Shanghai East Pump photo-5

Product Spotlights

High-chromium alloy with hardfacing wear-resistant coating extends lifespan 2-3x vs standard cast iron. Precision CNC machined to ±0.05mm tolerances, dynamically balanced G2.5. Drop-in replacement for Shanghai East Pump DFSS250-4N/4, reducing downtime. Customizable material and coating. Factory-direct from a 10,000+ sqm manufacturer with 12-month warranty.

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

Get Latest Price

Model:

DFSS250-4N/4

Material:

High-chromium alloy / Ductile iron

Application:

Centrifugal pump rotor assembly

Contact Supplier Request Quote Chat Now

Jiangsu Manqi Machinery Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

Shanghai

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Model DFSS250-4N/4

Material High-chromium alloy / Ductile iron

Application Centrifugal pump rotor assembly

Weight Approximately 85 kg (customizable)

Surface Treatment Hardfacing wear-resistant coating

Compatible Pump Shanghai East Pump series

Color Gray / Customizable

Processing Precision casting + CNC machining

Package Wooden case for export

Warranty 12 months under normal use

DFSS250-4N/4 Rotor Assembly – Engineered for Extended Service Life in Demanding Environments

As a specialized manufacturer with over 7 years of experience in pump rotors, Jiangsu Manqi Machinery Co., Ltd. proudly presents the DFSS250-4N/4 Rotor Assembly, a wear-resistant component designed to replace or upgrade Shanghai East Pump systems. Our factory, located in Suzhou, Jiangsu, occupies 10,000-30,000 square meters and employs a skilled team of 11-50 professionals. We serve clients across Eastern Europe, Southeast Asia, Africa, and South Asia, ensuring that every rotor assembly delivers consistent performance under continuous operation. This rotor assembly is built with advanced metallurgy and precision machining to minimize downtime and maximize pumping efficiency.

Key Features & Technical Specifications

Premium Wear-Resistant Material: The rotor is manufactured using high-chromium alloy or ductile iron with a hardfacing coating, achieving hardness up to HRC 58-62. This significantly reduces abrasive wear when handling slurries, wastewater, or industrial fluids containing solid particles.
Precision CNC Machining: Each rotor undergoes multi-axis CNC machining to ensure tight tolerances (±0.05 mm) on critical dimensions, balancing the rotating assembly for smooth operation and minimal vibration.
Optimized Hydraulic Profile: The blade geometry is designed to match the original Shanghai East pump hydraulic curves, maintaining flow rates and head pressure while improving efficiency by up to 2-3% compared to standard OEM parts.
Anti-Corrosion Protection: A multi-layer paint system (including epoxy primer and polyurethane topcoat) provides resistance to chemical attack and moisture, suitable for the most demanding industrial environments.
Direct Drop-In Replacement: The DFSS250-4N/4 rotor assembly is dimensionally interchangeable with OEM parts, requiring no modifications to the pump housing, shaft, or bearings. Installation is straightforward for maintenance teams.
Balanced Rotor Dynamics: Each assembly is dynamically balanced to G2.5 grade or better, reducing bearing loads and extending the life of the entire pump set.

Parameter	Value
Model	DFSS250-4N/4
Max operating speed	1,500 rpm
Material hardness	HRC 58-62 (hardfacing layer)
Balancing grade	G2.5
Applicable temperature	-20°C to +120°C
Weight	85 kg ±2 kg
Warranty	12 months

Benefits to Your Operations

Reduced Maintenance Costs: The wear-resistant coating extends the service life 2-3 times longer than standard cast iron rotors, meaning fewer replacements and lower spare parts inventory.
Improved Pump Efficiency: The optimized hydraulic profile and precise balancing translate to lower energy consumption – typical savings of 5-8% in power costs over a year.
Minimized Downtime: Drop-in design ensures quick changeovers, typically under 2 hours for a trained technician. This keeps your production line moving.
Versatile Application: Suitable for water treatment, mining slurry handling, chemical processing, and irrigation systems where abrasive or corrosive media are present.
Flexible Customization: We can adjust the rotor dimensions, material grade, or coating type based on your specific operating conditions – contact us for custom solutions.

Trust & Reliability

Since 2017, Jiangsu Manqi Machinery has been dedicated to producing high-quality pump components. Our factory is equipped with advanced casting and machining capabilities, and we insist on 100% dimensional inspection for every rotor assembly before shipment. We have shipped over 5,000 pump rotors to clients in more than 20 countries, with less than 0.2% customer complaints. Our team is available to provide technical support and after-sales service. We are confident that the DFSS250-4N/4 Rotor Assembly will meet or exceed your expectations. Order now and experience the difference of a quality-manufactured replacement part.

Frequently Asked Questions (FAQ)

Q: Is this rotor assembly compatible with all Shanghai East Pump models?
A: This DFSS250-4N/4 rotor is specifically designed for Shanghai East pump frames with the same model designation. Please verify your pump model and dimensions before ordering. We can also produce custom versions for other models upon request.
Q: What is the lead time for this rotor assembly?
A: Standard lead time is 15-20 working days after order confirmation. For urgent orders, we can expedite to 10 days with a small surcharge.
Q: Can you provide material certificates or test reports?
A: Yes, we can provide material composition analysis and hardness test reports for each batch. These are included upon request at no extra cost.
Q: How should I store the rotor assembly before installation?
A: Store in a dry, clean environment, away from direct sunlight and corrosive agents. Keep the rotor in its original packaging to prevent damage.
Q: What is the warranty coverage?
A: We offer a 12-month warranty against manufacturing defects. This does not cover wear from normal use or damage caused by improper installation or operation.
Q: Do you offer samples for testing?
A: Yes, we can provide a sample unit for evaluation. Please contact our sales team to discuss terms and shipping costs.
Q: What payment methods do you accept?
A: We accept T/T (wire transfer), L/C, and other commonly used methods. Payment terms are negotiable based on order value and relationship.
Q: Is the rotor assembly balanced for high-speed operation?
A: Yes, each rotor is dynamically balanced to G2.5 grade, suitable for speeds up to 1,500 rpm. For higher speeds, please advise so we can adjust the balancing specification.