Precision Sleeve Manufacturing and Surface Finishing Services
SleeveMFG manufactures custom-machined metal sleeves and rotational components based on your technical drawings and specifications. We support engineers and procurement teams by delivering components that meet exact requirements for ID/OD fits, concentricity, and specialized surface finishes.
Why Surface Finish Matters for Sleeve Performance
In precision rotational equipment, the surface finish is not merely aesthetic—it is a critical mechanical specification. Whether a sleeve serves as a dynamic seal surface or a bearing race, the Ra value directly impacts friction, wear rates, and the service life of mating components.
We control surface roughness from Ra 0.2 μm to standard machining finishes. By aligning the grinding and finishing process with your application’s lubrication and sealing requirements, we ensure your components perform as intended in the field.
Surface Roughness Range
Precision grinding, honing, and polishing are matched to your mating component requirements for seals, bearings, and dynamic fits.
- ✓Reduced friction and wear
- ✓Improved seal performance
- ✓Longer service life for mating parts
Our Manufacturing Capabilities
We combine CNC turning, CNC milling, and precision grinding to produce components that adhere to tight geometric tolerances. Our facility in Dongguan is equipped to handle complex profiles, including stepped, flanged, and thin-wall geometries.
Outside Diameter
Ø3 mm – Ø500 mm
Inside Diameter
Ø1 mm – Ø450 mm
Length
3 mm – 1500 mm
CNC Turning Tolerance
±0.01 mm
Precision Grinding
±0.005 mm
Geometric Control
0.005 – 0.01 mm
Materials for Demanding Environments
We machine a wide range of materials to meet your specific environmental and mechanical needs.
Stainless Steel
304, 316, 17-4PH, 15-5PH
Carbon & Alloy Steel
1018, 1045, 4140, 4340
Tool & Bearing Steel
D2, 52100, GCr15
High-Performance Alloys
Inconel, Monel, Hastelloy
Copper & Aluminum
Brass, Bronze, 6061, 7075
Precision Surface Treatments
Beyond machining, we coordinate secondary operations to enhance component durability and resistance to corrosion, wear, or extreme temperatures.
Hardness & Heat Treatment
Quenching, tempering, nitriding, and induction hardening.
Corrosion Resistance
Passivation, electroless nickel plating, zinc plating, and black oxide.
Wear Resistance
Hard chrome plating, PVD, and DLC coatings.
Texture & Fit
Precision grinding, honing, and polishing to achieve specific Ra requirements.
Serving OEMs and MRO Providers
OEM Manufacturers
We provide consistent, repeatable quality for pump, motor, and gearbox production. We work directly from your STEP, DWG, or PDF files to ensure every batch matches the original design intent.
MRO & Repair
If you require a replacement for an obsolete or worn part, we can reverse-engineer from your physical sample or key dimensions, providing a replacement sleeve that restores your equipment to operation.
Quality Control Standards
SleeveMFG utilizes a comprehensive suite of inspection equipment to verify that your parts meet drawing specifications before they leave our facility.
Our QC process includes CMM, profile projectors, bore gauges, and surface roughness testers to document critical dimensions, runout, and fits (H6/H7). We provide necessary inspection reports with every shipment.
CMM Inspection
Profile Projectors
Bore Gauges
Surface Roughness Testers
Runout Verification
H6 / H7 Fit Reports
Flexible Production Volumes
We support your project lifecycle from initial engineering samples to full-scale production runs. By focusing exclusively on sleeve components, we have optimized our supply chain in Dongguan to reduce lead times and manage the complexities of secondary operations like heat treatment and plating, simplifying your procurement process.
Prototypes
Engineering samples and first-article validation.
Low Volume
Short runs for specialized equipment.
High Volume
Repeatable OEM production batches.
MRO Replacements
Reverse-engineered spare sleeves.
Request a Quote
To receive a formal quotation, please provide your engineering drawings or 3D models. Include the following details to ensure an accurate response:
- Material specifications
- Dimensional tolerances and surface finish requirements
- Quantity per order
- Required surface treatments or coatings
Send your files to info@sleevemfg.com or visit our facility at .
We will review your requirements and provide a lead time and cost estimate based on your specific print.