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Help CenterKQSN1200-N7/1188 Wear Resistant Shaft Sleeve Replacement Spare Parts for Shanghai Kaiquan Pump Accessories
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As a professional manufacturer based in Suzhou, Jiangsu, China, Jiangsu Manqi Machinery Co., Ltd. specializes in producing high-quality replacement spare parts for industrial pumps. With a factory covering 10,000-30,000 square meters and over 7 years of experience since 2017, we bring precision engineering and durable materials to every component we produce. Our KQSN1200-N7/1188 Wear Resistant Shaft Sleeve is designed specifically as a direct replacement for Shanghai Kaiquan pump accessories, ensuring seamless fit and reliable performance in demanding applications.
This shaft sleeve plays a critical role in protecting the pump shaft from abrasive wear, corrosion, and mechanical damage. Manufactured from premium grade wear-resistant alloys and heat-treated to achieve optimal hardness, it significantly extends the service life of your pump while reducing maintenance downtime. Whether you are handling slurry, wastewater, or other abrasive fluids, this spare part is engineered to maintain stable operation under harsh conditions.
We understand that every pump system has unique requirements. That is why our shaft sleeve is available in multiple material options and can be customized to match your exact specifications. Our commitment to quality control, combined with competitive pricing and reliable logistics from the Port of Shanghai, makes us a trusted partner for clients in Eastern Europe, Southeast Asia, Africa, and South Asia.
Key Features & Technical Advantages
- Superior Wear Resistance: The sleeve is made from high-chromium alloy steel or optional duplex stainless steel, with a hardened surface (HRC 58-62) that withstands severe abrasive wear from sand, gravel, and other particulates.
- Precision Engineering: CNC machined to exact OEM dimensions for the KQSN1200-N7/1188 pump, ensuring zero deviation in fitment and concentricity.
- Corrosion Protection: Optional surface treatments like carburizing or nitriding enhance resistance to chemical attack, making it suitable for slightly acidic or alkaline media.
- Extended Pump Life: By preventing shaft damage, the sleeve reduces the frequency of shaft replacement and overall pump overhaul costs.
- Easy Installation: Designed as a direct drop-in replacement – no modification required. Comes with installation instructions upon request.
- Customizable Options: We offer custom dimensions, materials, and coatings based on your specific operating conditions (temperature, pH, abrasivity).
- Cost-Effective: As a manufacturer, we provide factory-direct pricing without sacrificing quality. Ideal for bulk orders and maintenance contracts.
Technical Specifications
| Parameter | Value / Option |
| Pump Model Compatibility | KQSN1200-N7/1188 (Shanghai Kaiquan) |
| Material Grades | High-Cr alloy steel (standard), Duplex SS 2205, 17-4PH (optional) |
| Hardness (after heat treatment) | HRC 58-62 (standard); HRC 50-55 (optional) |
| Outer Diameter | Customized per OEM drawing (typical range 100-300 mm) |
| Wall Thickness | 10-50 mm (customizable) |
| Surface Finish | Ra ≤ 1.6 μm (ground finish) |
| Packaging | Individual foam wrapping + plywood case for export |
Why Choose Jiangsu Manqi Machinery?
Since 2017, our factory in Suzhou has been dedicated to manufacturing pump replacement parts that meet or exceed OEM standards. We leverage advanced CNC machining centers, heat treatment furnaces, and rigorous inspection procedures to ensure each shaft sleeve delivers consistent performance. Our team of 11-50 skilled workers and engineers prides itself on quick response times and flexible customization – even for low-volume orders.
We have successfully supplied wear-resistant components to clients in Eastern Europe, Southeast Asia, Africa, and South Asia. Our annual export value may be below US$1 million, but every shipment is handled with care, shipped from the Port of Shanghai with full documentation. We back our products with a quality promise: if any defect arises from material or workmanship, we offer a replacement or refund within the agreed warranty period.
Don't let a worn shaft sleeve compromise your pump efficiency. Contact us today for a quote or technical consultation. We can provide drawings and samples to validate fitment before mass production.
Frequently Asked Questions
Q1: Is this shaft sleeve an exact OEM replacement for Shanghai Kaiquan KQSN1200-N7/1188?
A: Yes, it is manufactured based on original specifications and dimensions. We recommend sending us your worn sleeve or drawing to confirm 100% compatibility before ordering.
Q2: What materials are available for abrasive applications?
A: The standard material is high-chromium alloy steel (hardness HRC 58-62). For highly corrosive environments, we offer duplex stainless steel 2205 or 17-4PH. Please specify your media composition.
Q3: Do you provide custom sizes or special coatings?
A: Absolutely. We can customize outer diameter, inner diameter, length, and surface treatments like carburizing, nitriding, or ceramic coating. Just share your requirements.
Q4: What is the typical lead time?
A: For standard sizes, lead time is 7-15 days after order confirmation. Custom orders may take 20-30 days depending on complexity and quantity.
Q5: How do you ensure quality control?
A: We follow a strict QC process: incoming material inspection, in-process dimensional checks, hardness testing, surface finish verification, and final assembly trial. Each batch comes with a test report upon request.
Q6: What is the minimum order quantity (MOQ)?
A: There is no fixed MOQ for standard sizes; we accept trial orders of 1-2 pieces. For custom designs, MOQ may be 5-10 pieces depending on material availability.
Q7: Do you offer samples before bulk purchase?
A: Yes, samples are available. The sample cost can be deducted from your first bulk order. Shipping costs for samples are borne by the buyer.
Q8: How is the product packaged for export?
A: Each shaft sleeve is individually wrapped in anti-rust paper and foam, then packed in a sturdy plywood case with steel strapping. We also mark the package with pump model and part number for easy identification.
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