Precision CNC Machining · Dongguan, China
Custom Brass Sleeves Manufactured to Drawing
SleeveMFG provides precision CNC machining services for custom brass sleeves. We manufacture components directly from your 2D drawings, 3D models, or physical samples, catering to OEMs, MRO providers, and industrial equipment manufacturers — with a streamlined process for prototype, low-volume, and mass production.
Ø3–500 mm
Outside diameter range
±0.005 mm
Grinding tolerance
Ra 0.2 μm
Surface finish capability
0.5 mm
Minimum wall thickness
Material Engineering
Why Brass for Industrial Sleeves
Brass is frequently specified for sleeve components due to its specific metallurgical properties. In demanding industrial environments, brass sleeves deliver consistent, measurable performance advantages.
Alloy Range
We machine a variety of brass alloys — standard brass, leaded brass, and bronze-based alloys — ensuring the material meets your specific mechanical and environmental requirements.
Low Friction
Excellent bearing properties when used as bushings or guide sleeves.
Corrosion Resistance
High resistance to moisture and various chemicals, making it suitable for fluid handling environments.
Machinability
Highly efficient to machine, allowing complex geometries, thin walls, and intricate internal or external profiles while remaining cost-effective.
Non-Sparking
Often required for safety-critical components in hazardous or explosive environments.
Electrical Conductivity
Used in applications where electrical contact or grounding is required alongside mechanical positioning.
Manufacturing Capabilities
High-Precision CNC Turning & Grinding
Our facility utilizes advanced CNC turning and milling centers to achieve high-precision results on brass components. We focus on the challenges inherent in sleeve manufacturing — maintaining concentricity, roundness, and tight fits.
01
CNC Turning
Complex geometries, including shoulders, flanges, and stepped profiles.
02
Precision Grinding
Centerless and OD/ID grinding for superior surface finish or exact OD/ID fits.
03
Thin-Wall Machining
Specialized work-holding techniques to minimize distortion on thin-walled brass sleeves.
04
Internal Features
Cross-holes, keyways, internal grooves, and snap-ring grooves machined to print.
Technical Specifications
Standard Production Capabilities
We adhere to your specified tolerances and dimensional requirements. The table outlines our standard production capabilities for brass sleeve components.
| Parameter | Capability |
|---|---|
| Outside Diameter (OD) | Ø3 mm – Ø500 mm |
| Inside Diameter (ID) | Ø1 mm – Ø450 mm |
| Length | 3 mm – 1500 mm |
| Turning Tolerance | ±0.01 mm |
| Grinding Tolerance | ±0.005 mm |
| Surface Finish | Down to Ra 0.2 μm |
| Wall Thickness | Down to 0.5 mm |
| Concentricity | Down to 0.01 mm |
Secondary Operations & Finishing
Assembly-Ready Components
To ensure your brass sleeves meet final assembly requirements, we coordinate a full suite of secondary operations.
01
Surface Treatments
Nickel plating, chrome plating, tin plating, or passivation to enhance corrosion resistance or wear properties.
02
Heat Treatment
While many brass alloys are not heat-treatable, we manage stress-relieving processes to ensure dimensional stability.
03
Precision Honing
For critical ID tolerances in bearing or bushing applications.
04
Deburring & Cleaning
Strict adherence to cleanliness standards for hydraulic or sensitive mechanical assemblies.
Typical Applications
Trusted Across Industrial Sectors
Our brass sleeves are utilized across diverse industries, manufactured to the exact specifications of the original design.
Fluid Handling
Pump shaft sleeves, seal sleeves, and spacer sleeves for corrosive environments.
Mechanical Assemblies
Bushings and guide sleeves for automation equipment and precision machinery.
Electrical & Electronics
Conductive sleeves and spacers for power transmission or grounding assemblies.
Rotating Equipment
Wear sleeves and bearing supports for gearboxes and motors.
Quality Assurance
Verified Against Every Drawing
We maintain strict quality control protocols for every production run. Our inspection department verifies that every part complies with your drawing's specifications before shipment.
Full Documentation on Request
- ✓ Material certification (Mill Test Reports)
- ✓ First Article Inspection (FAI) reports
- ✓ Dimensional inspection reports for production batches
Request a Quote
Send Your Drawings, Receive a Quotation
SleeveMFG manufactures sleeves based on customer engineering data. We do not sell standard catalog parts — we provide custom manufacturing services for your specific design requirements.
To receive a quotation, send your project files (PDF, STEP, DWG, or DXF) to info@sleevemfg.com. Please include the following details to ensure a prompt response:
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1
Material Grade — or mechanical/environmental requirements
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2
Quantity — prototype or production volume
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3
Tolerances and Surface Finish
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4
Secondary Operations — plating or other finishing requirements
Attach PDF, STEP, DWG, or DXF files with your inquiry for the fastest response.
SleeveMFG — Precision Machining in Dongguan.