Custom Machined Sleeves
Precision Made-to-Print Sleeves
SleeveMFG is a specialized manufacturer of custom-machined sleeves and rotational components. Based in Dongguan, China, we produce high-precision parts directly from your engineering drawings, 3D models, or physical samples. We serve global OEMs, industrial distributors, and MRO service providers who require consistent quality for demanding applications.
We do not sell standard catalog parts. We manufacture the specific sleeve your assembly requires.
- Direct from drawings, 3D models, or physical samples
- CNC turning, CNC milling, and precision grinding
- Tolerances down to ±0.005 mm
- Global OEM and MRO support
- Diameter Range
- Ø3–500 mm
- Length Range
- 3–1500 mm
- Grinding Tolerance
- ±0.005 mm
- Surface Finish
- Ra 0.2 μm
Custom Sleeve Manufacturing Capabilities
We combine CNC turning, CNC milling, and precision grinding to achieve the exact geometric requirements specified in your technical documentation. Whether you are dealing with tight bore-to-OD concentricity or specific surface finish requirements, our production processes are calibrated for precision.
Core Product Range
- Shaft & Wear Sleeves
- Engineered for rotating equipment, pumps, and motors.
- Bearing & Spacer Sleeves
- Precision-ground for accurate fits and alignment.
- Mechanical Seal Sleeves
- Manufactured to support critical sealing environments.
- Flanged, Stepped & Threaded Sleeves
- Custom profiles including shoulders, keyways, and complex internal/external threading.
- Thin-Wall Components
- Specialized handling to prevent distortion during machining.
Process Capabilities
Our machining and grinding operations are calibrated for precision across short prototype runs and full production volumes.
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CNC Turning
Precision OD and ID turning for cylindrical profiles.
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CNC Milling
Keyways, flanges, shoulders, and complex geometry.
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Grinding
Tight tolerances and fine surface finishes.
Technical Specifications
Our production envelope covers a wide range of high-precision sleeve and rotational component requirements.
| Parameter | Capability |
|---|---|
| Diameter Range | Ø3 mm – Ø500 mm |
| Length Range | 3 mm – 1500 mm |
| Tolerances | CNC Turning ±0.01 mm / Grinding ±0.005 mm |
| Fits | H6 / H7 / h6 / h7 standards |
| Runout / Roundness | Down to 0.005 mm – 0.01 mm |
| Surface Finish | Down to Ra 0.2 μm |
Materials We Process
We machine a broad spectrum of industrial-grade metals to meet your mechanical and environmental requirements.
Stainless Steel
304, 316L, 17-4PH, 15-5PH
Carbon & Alloy Steel
1045, 4140, 4340, 42CrMo
Tool & Bearing Steel
52100, GCr15, D2
Copper & Nickel Alloys
Brass, Bronze, Inconel, Monel, Hastelloy
Aluminum
6061, 7075
Integrated Secondary Operations
To simplify your supply chain, SleeveMFG manages the full production lifecycle. We coordinate all necessary secondary treatments to ensure your parts are ready for immediate installation.
Why Partner with SleeveMFG?
We combine precision manufacturing with responsive engineering support for OEM, distribution, and maintenance requirements.
Designed for OEMs and MRO
For OEMs, we provide repeatable quality and strict adherence to drawing specifications. For MRO and repair companies, we reverse-engineer obsolete or worn components from samples to get equipment back online faster.
Precision-Focused Supply Chain
Located in Dongguan’s manufacturing hub, we keep advanced grinding, heat treatment, and inspection in-house. This reduces lead times and ensures quality control across every operation.
Reliable Documentation
We provide material certifications, inspection reports, and full traceability to support your quality management systems.
Request a Quote for Your Custom Sleeves
To receive a prompt quotation, please provide your engineering files (PDF, STEP, STP, IGES, DXF, or DWG) along with:
- 1Material specifications
- 2Required tolerances
- 3Surface finish or coating requirements
- 4Order quantity
Send your RFQ to info@sleevemfg.com.
Our engineering team will review your drawings and provide a competitive quote tailored to your production volume and technical needs.
SleeveMFG