Custom Precision Bearing Sleeves
Precision bearing sleeves provide the essential interface between a shaft and a bearing or housing. When standard catalog components do not meet the specific fit, load, or material requirements of your assembly, custom machining is necessary to ensure proper alignment, prevent vibration, and extend the service life of your rotating equipment.
SleeveMFG specializes in manufacturing bearing sleeves directly from customer-provided drawings. We handle the production of parts requiring precise bore diameters, controlled concentricity, and specific surface finishes, supporting projects from initial prototypes to high-volume production.
CNC turned and precision ground bearing sleeves, manufactured to customer prints.
- Outside Diameter Range
- Ø3 – Ø500 mm
- Grinding Tolerance
- ±0.005 mm
- Surface Finish
- Ra 0.2 μm
- Bore / Shaft Fits
- H6 / H7
Capabilities
Technical Manufacturing Capabilities
Achieving the required H6/H7 fits and concentricity for bearing sleeves requires a combination of CNC turning, milling, and precision grinding. Our facility in Dongguan is equipped to maintain tight geometric tolerances that ensure your bearing assemblies function correctly under load.
| Parameter | Typical Capability |
|---|---|
| Outside Diameter | Ø3 mm – Ø500 mm |
| Inside Diameter | Ø1 mm – Ø450 mm |
| Part Length | 3 mm – 1500 mm |
| CNC Turning Tolerance | ±0.01 mm |
| Precision Grinding Tolerance | ±0.005 mm |
| Bore / Shaft Fits | H6 / H7 / h6 / h7 and others |
| Concentricity | Down to 0.01 mm |
| Roundness | Down to 0.005 mm |
| Cylindricity | Down to 0.01 mm |
| Radial Runout | Down to 0.01 mm |
| Surface Finish | Down to Ra 0.2 μm |
| Production Volume | Prototype to Mass Production |
Materials
Material Selection for Bearing Load and Environment
The performance of a bearing sleeve is defined by its material properties. We machine components from a wide range of industrial metals based on your specific application requirements.
Bearing & Tool Steels
Selected for high-load applications where surface hardness and wear resistance are critical.
Stainless Steel
Used in environments requiring corrosion resistance, such as marine equipment or food processing machinery. 17-4PH is frequently chosen for its high strength and ability to be heat-treated.
Carbon & Alloy Steels
Suitable for general-purpose mechanical sleeves where cost-effective strength is the priority.
Bronze & Copper Alloys
Ideal for self-lubricating bearing applications or where reduced friction against a mating surface is required.
Process Support
Finishing and Secondary Operations
Bearing sleeves often require more than basic machining to reach their final specification. We coordinate the full manufacturing process to ensure your parts arrive ready for assembly. This includes:
Precision Grinding
Required for parts needing tight tolerance on OD/ID and low surface roughness (Ra 0.2 μm).
Heat Treatment
Essential for hardening bearing sleeves to prevent deformation under high rotational stress. We manage processes such as induction hardening, carburizing, and quenching & tempering.
Surface Coatings
Application of PVD/DLC, Electroless Nickel, or Hard Chrome plating to improve wear resistance or provide chemical protection in harsh environments.
Honing
Used to achieve high-precision internal diameters and specific surface textures for optimal lubrication retention.
Compliance
Engineering Drawing Compliance
SleeveMFG manufactures exclusively to print. We accept your 2D drawings, 3D models, or physical samples. Our engineering team reviews your specifications—including bore-to-OD concentricity, surface finish (Ra), and fit requirements—before production begins to ensure the final part matches your assembly needs.
Supported file formats for quotation and manufacturing:
- STEP
- STP
- IGES
- DXF
- DWG
- SolidWorks
Have your drawings ready?
Send your 2D drawings, 3D models, or sample specifications for an engineering review and a competitive quotation.
Submit Your RFQRFQ Process
How to Submit Your RFQ
To receive a competitive quote for your bearing sleeve project, please send your technical documentation and requirements to our team. Providing complete information ensures a faster response and more accurate pricing. Please include the following in your RFQ:
-
1
Engineering Files
2D drawings (with tolerances) or 3D models.
-
2
Material Specification
Grade and any required certification.
-
3
Quantity
Prototype, low-volume, or production run requirements.
-
4
Surface Requirements
Heat treatment, coating, or finishing specifications.
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5
Application
Briefly describe the usage (e.g., pump shaft, gearbox) to help us verify the manufacturing process.
Ready to quote your bearing sleeve project?
Complete RFQs receive faster responses and more accurate pricing.
Request a Quote
Get a Quote for Custom Precision Bearing Sleeves
Send your engineering files and requirements to our team. Our engineers will review your specifications and respond with pricing and manufacturability feedback.
Send your RFQ to
info@sleevemfg.com
Phone / WhatsApp
Facility Address
SleeveMFG — Custom Sleeves. Made to Your Drawing.