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Help CenterDFSS250-480/4 Corrosion Resistant Stainless Steel Shaft Sleeve Replacement
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Jiangsu Manqi Machinery Co., Ltd. is a professional manufacturer established in 2017, operating a modern factory covering 10,000–30,000 square meters. We specialize in precision-machined components for industrial rotating equipment. Our DFSS250-480/4 Corrosion Resistant Stainless Steel Shaft Sleeve Replacement is engineered to withstand aggressive environments, offering exceptional durability and dimensional accuracy. This shaft sleeve is an ideal drop-in replacement for worn or corroded sleeves in pumps and compressors, helping you restore equipment performance and extend service life without costly modifications.
Below is a detailed technical overview of the product, its benefits, and why it stands out among alternative replacement options.
Product Features & Technical Specifications
Superior Corrosion Resistance: Manufactured from premium-grade stainless steel (304/316/316L availability), ensuring excellent resistance to chemicals, salt water, and acidic media in industries such as chemical processing, oil & gas, marine, and wastewater treatment.
High Precision Machining: CNC-turned and ground to tolerances as tight as ±0.05mm, guaranteeing a perfect fit on the shaft and within the stuffing box or mechanical seal cavity. Surface finish can be controlled to Ra ≤0.8μm for reduced friction and seal wear.
Enhanced Wear Life: The sleeve can be hardened to HRC 40–50 upon request, significantly improving abrasion resistance in applications with abrasive particles or high-velocity fluid flow.
Customizable Dimensions: While the standard model DFSS250-480/4 features an outer diameter of 250mm, inner diameter of 480mm, and length of 4 inches (101.6mm), we can produce any custom size to match OEM specifications. Non-standard bores, keyways, threads, or grooves are available as required.
Corrosion-Resistant Surface Treatment: Each sleeve is passivated or electropolished for a smooth, non-porous surface that resists pitting and crevice corrosion. Additional coatings (e.g., PTFE, ceramic) can be applied for extreme conditions.
Typical Parameters Table
| Parameter | Value / Range |
| Model | DFSS250-480/4 |
| Material Grade | SS304 / SS316 / SS316L |
| Outer Diameter (OD) | 250 mm (customizable) |
| Inner Diameter (ID) | 480 mm (customizable) |
| Length | 101.6 mm (4 inches) (customizable) |
| Hardness | As-annealed ~HRB 90; Hardened up to HRC 50 (optional) |
| Surface Roughness | Ra 0.4 – 0.8 μm (standard) |
| Tolerance Grade | ISO 2768-m (finer available on request) |
| Packing | Wooden crate / pallet / as per buyer requirement |
Benefits for Your Application: This shaft sleeve reduces downtime because it is a direct replacement – no re-engineering or shaft modification needed. The corrosion-resistant stainless steel body eliminates frequent failures caused by rust or chemical attack, thus lowering your maintenance costs. By choosing our product, you also gain access to a team with years of machining experience and flexible manufacturing capabilities.
Trust & Reliability
Since 2017, Jiangsu Manqi Machinery Co., Ltd. has been serving clients across Eastern Europe, Southeast Asia, Africa, and South Asia. Our factory in Suzhou, China (10,000–30,000 m²) houses 11–50 skilled employees who follow strict quality control procedures. Every shaft sleeve is inspected before shipment, and we offer a 12-month workmanship warranty. Our annual export value below US$1 million reflects our focused, mid-sized operation – nimble enough to respond quickly to custom orders yet backed by sufficient production capacity. We ship from the Port of Shanghai, ensuring convenient logistics for international customers.
We invite you to contact us for a quotation or to discuss your specific shaft sleeve requirements. Our engineering team can review your drawings or samples and deliver a solution tailored to your pump or compressor model. Choose Jiangsu Manqi for reliable, corrosion-resistant components that keep your equipment running smoothly.
Frequently Asked Questions
Q1: Is this shaft sleeve a direct replacement for the OEM part?
A: Yes, the DFSS250-480/4 is designed as a direct replacement. We match the original dimensions, tolerance, and material grade. Please verify your OEM specifications or send us a sample for reverse engineering.
Q2: Which stainless steel grades are available?
A: We offer SS304, SS316, and SS316L. SS316L is recommended for highly corrosive environments containing chlorides or acids.
Q3: Can you harden the sleeve to increase wear resistance?
A: Yes, we can provide heat treatment to achieve hardness up to HRC 50. Please specify your required hardness when ordering.
Q4: What is the typical lead time for this product?
A: For standard sizes, lead time is 7–15 working days. Custom orders may require 15–25 working days depending on complexity.
Q5: Do you offer surface coatings like ceramic or PTFE?
A: Yes, we can apply various coatings upon request. Common options include PTFE for low friction and HVOF ceramic for extreme abrasion resistance.
Q6: What is the minimum order quantity (MOQ)?
A: Our MOQ is 1 piece for standard models, and 5 pieces for custom designs. We are flexible for trial orders.
Q7: How do you ensure the sleeve fits my pump shaft?
A: We can machine the inner diameter to your exact shaft size, including keyways or threads. Provide a drawing or worn part, and we will replicate it precisely.
Q8: What packaging do you use for export?
A: We pack each sleeve individually in foam or bubble wrap, then secure them in a sturdy wooden crate suitable for ocean freight. Custom packaging is available.
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