Precision CNC Machining for Pump & Fluid Handling
Custom-Machined Pump Shaft Sleeves and Fluid Handling Components
SleeveMFG provides precision CNC machining services specifically for the pump and fluid handling industry. We manufacture components directly from customer drawings, serving OEMs, MRO providers, and repair facilities that require specific material grades, tight dimensional tolerances, and high-performance surface finishes.
Engineering Requirements for Pump Components
In fluid handling systems, the sleeve-to-shaft interface is a critical point of failure. Proper functionality requires precise control over geometric dimensions to ensure effective sealing and load distribution.
We prioritize the following parameters during the manufacturing process:
Concentricity
Essential for preventing vibration and premature seal failure.
Surface Finish (Ra)
Controlled to ensure compatibility with mechanical seals and to minimize friction.
Cylindricity and Roundness
Required for proper fitment within bearing assemblies and stuffing boxes.
TIR (Total Indicated Runout)
Minimized to maintain alignment during high-speed rotation.
Manufacturing sleeves for pumps involves balancing material hardness with corrosion resistance, particularly for components exposed to aggressive media.
Core Pump Components We Manufacture
We do not supply standard catalog items. Every part is machined to the specifications provided in your drawings or samples. Our production includes:
Pump Shaft Sleeves
Precision-ground sleeves to protect shafts from wear and corrosion.
Mechanical Seal Sleeves
Machined to strict tolerances to ensure seal integrity.
Wear Sleeves
Hardened or coated components designed for high-abrasion environments.
Spacer Sleeves
Used for accurate positioning of impellers and bearings.
Packing Sleeves
Manufactured for traditional gland packing applications.
Thin-Wall Sleeves
Specialized machining for space-constrained pump designs.
Material Selection for Fluid Handling
Pump environments often demand specific metallurgical properties to withstand pressure, temperature, and chemical exposure. We work with the following materials:
Corrosion-Resistant Stainless Steel
316/316L for general fluid handling; 410/420 for applications requiring higher hardness.
High-Strength Alloys
17-4PH and 15-5PH for components subjected to high torque or mechanical stress.
Nickel Alloys
Inconel, Monel, and Hastelloy for highly corrosive or extreme-temperature chemical pumping.
Bearing Steels
52100 or GCr15 for hardened wear surfaces.
Bronze and Copper Alloys
Used for non-sparking or specific bearing interface requirements.
Need a Material Not Listed Here?
Send us your drawings and specifications to discuss the right material for your application.
Request a QuotePrecision Machining Capabilities
Our production facility in Dongguan utilizes CNC turning, milling, and grinding to achieve the tolerances required for pump components.
| Parameter | Capability |
|---|---|
| Outside Diameter | Ø3 mm – Ø500 mm |
| Inside Diameter | Ø1 mm – Ø450 mm |
| CNC Turning Tolerance | ±0.01 mm |
| Precision Grinding | ±0.005 mm |
| Concentricity / Runout | Down to 0.01 mm |
| Surface Finish | Down to Ra 0.2 μm |
| Max Part Length | 1500 mm |
Surface Treatments for Extended Service Life
To improve the longevity of pump components in harsh operating conditions, we coordinate secondary processes to enhance surface properties:
Hard Chrome Plating
Increases surface hardness and wear resistance.
Electroless Nickel Plating
Provides uniform, corrosion-resistant coatings on complex geometries.
PVD / DLC Coating
Applied for extreme wear resistance and low friction coefficients.
Nitriding & Carburizing
Case-hardening processes for steel components.
Passivation
Standard for stainless steel parts to improve corrosion resistance.
Need a Custom Surface Treatment Process?
We coordinate secondary processes based on your component requirements.
Request a QuoteSupport for OEM and MRO Projects
Our manufacturing model is designed to support the specific needs of the fluid handling sector:
For OEMs
We provide repeatable, print-to-spec production runs. We manage the supply chain from raw material sourcing to final inspection, ensuring that every batch meets the drawing requirements.
For MRO and Repair
We manufacture replacement sleeves from samples or broken parts. When original blueprints are unavailable, we reverse-engineer the component based on physical measurements to restore pump performance.
Request a Quote
To receive a quotation for your pump components, send your engineering files (PDF, STEP, DWG) to info@sleevemfg.com.
Please include the following details in your inquiry:
- 1 Material specifications.
- 2 Required quantity.
- 3 Surface finish and tolerance requirements.
- 4 Details regarding secondary treatments or heat treatment.
We review all drawings for manufacturability before production begins.
SleeveMFG
Email: info@sleevemfg.com