Precision OEM Sleeve Manufacturing: Custom Components to Your Drawing
SleeveMFG is a specialized contract manufacturer based in Dongguan, China, focused on the production of custom-machined sleeves and rotational components. We work directly from customer engineering drawings and 3D models to produce precision-engineered parts for OEMs, MRO providers, and industrial distributors.
We do not supply off-the-shelf catalog parts. We manufacture the specific sleeve, bushing, or spacer your assembly requires.
Precision Engineering for OEM Requirements
OEMs require repeatability. When your assembly relies on specific fits—such as H6/h7 or precise concentricity—the manufacturing process must be consistent from the first prototype to the final production batch.
Integrated Machining
Our facility integrates CNC turning, milling, and precision grinding to meet demanding dimensional requirements.
Complex Features
We handle internal/external threads, keyways, cross holes, and thin-wall geometries that require specialized work-holding to prevent distortion.
Prototype to Production Consistency
From first-article validation through full production runs, we hold the same process controls so your fit and function stay stable across every batch.
Core Manufacturing Capabilities
We support a wide range of rotational component designs, ensuring that every part meets your mechanical and geometric specifications.
Outside Diameter
Ø3 mm – Ø500 mm
Inside Diameter
Ø1 mm – Ø450 mm
Length
3 mm – 1500 mm
Tolerances
CNC turning to ±0.01 mm; precision grinding to ±0.005 mm
Geometry
Concentricity, roundness, and cylindricity controlled down to 0.005 mm – 0.01 mm
Surface Finish
Down to Ra 0.2 μm
Materials Sourced for Industrial Applications
The performance of a sleeve is defined by its material. We machine a broad spectrum of alloys, providing full material certification upon request.
Stainless Steel
304, 316, 17-4PH, 15-5PH
Carbon & Alloy Steel
1045, 4140, 4340
Tool & Bearing Steel
52100, GCr15, D2
Non-Ferrous
Aluminum 6061/7075, Brass, Bronze, Aluminum Bronze
High-Performance Alloys
Inconel, Monel, Hastelloy
Secondary Operations and Surface Finishing
A sleeve often requires more than just machining to survive its operating environment. We manage the entire component lifecycle, coordinating secondary processes to deliver a ready-to-assemble part.
Heat Treatment
Quenching, tempering, nitriding, and induction hardening.
Surface Treatments
Hard chrome plating, electroless nickel, black oxide, zinc plating, and passivation.
Advanced Coatings
PVD, DLC, and other specialized wear-resistant finishes.
Precision Finishing
Honing and polishing for critical seal surfaces.
Support for MRO and Replacement Parts
For repair companies and maintenance teams, we provide a solution for obsolete or custom-engineered parts that are no longer supported by the original equipment manufacturer.
If you have a worn-out component, we can reverse-engineer the part from your sample or provided dimensions to ensure your equipment is back in service with minimal downtime.
Quality Control and Inspection
Every production run is verified against your print. Our quality department utilizes calibrated inspection equipment to ensure your parts meet the specified fit and functional requirements.
Inspection Tools
CMM, profile projectors, surface roughness testers, bore gauges, and hardness testers.
Documentation
We provide inspection reports and material test reports (MTRs) to support your quality documentation requirements.
File Formats
We accept PDF, STEP, STP, IGES, DXF, DWG, and SolidWorks files for quoting and production.
Why Partner with SleeveMFG
We focus exclusively on rotational components. This specialization allows us to solve common manufacturing challenges, such as maintaining bore diameter during thin-wall machining or ensuring runout is minimized on high-speed shaft sleeves.
Flexible Volumes
We support small-batch prototypes for engineering validation and high-volume production for ongoing supply chain needs.
Supply Chain Consolidation
By managing the machining, heat treatment, and finishing in-house or through our vetted Dongguan-based supply chain, we reduce your administrative burden.
Direct Communication
Our engineering team reviews your drawings directly to ensure manufacturability before production begins.
Request a Quote for Your Custom Sleeve
To receive a formal quotation, please send your technical drawings or 3D models to info@sleevemfg.com.
Please include the following information to ensure an accurate response:
- 1.Material specifications
- 2.Required quantities (Prototype or Production)
- 3.Any specific heat treatment or coating requirements
- 4.Tolerance requirements if not clearly defined in the drawing
SleeveMFG
Email: info@sleevemfg.com
Phone:
Send Your Drawings for Review
Share your sleeve specifications and our engineering team will respond with a formal quotation.