OEM Wear Resistant CNC Copper Parts CNC Machined Brass Spiral Groove Bushing

Product Overview

These custom spiral-groove brass sleeves are multi-axis CNC machined from high-grade brass alloy stock, engineered to deliver extreme precision down to ±0.008 mm positional tolerance for all helical grooves, internal bores and flange mounting features. The optimized turn-mill composite machining process completes the full part geometry in one single fixturing setup, eliminating misalignment errors across all helical profiles and concentric bore features. Our spiral brass components combine excellent corrosion resistance, built-in self-lubricity, and high thermal conductivity for linear motion guides, rotation transmission assemblies, and custom industrial connection systems. Available material options include brass alloys, pure copper grades, stainless steel, aluminum alloy, and titanium alloy for different application requirements.

Core Machining Advantages & Problem Solving

Official Product Specifications

Key Machining Features

1. One-setup turn-mill composite machining — Completes upper/lower flange locating steps, full-length internal bore, and continuous helical spiral profiles in a single fixturing cycle, eliminating datum drift.

2. High-precision mounting hole pattern — All flange through-holes and tapped holes maintain tight positional tolerance, guaranteeing perfect stack alignment when the sleeve is assembled with mating parts.

3. Sharp, clean spiral groove edges — Dedicated high-feed milling cycles produce crisp, burr-free groove side walls with consistent depth and pitch across every full rotation, delivering accurate motion guidance and locking performance.

4. Ultra-fine internal bore finishing — Precision reaming + power honing after machining produces a smooth, low-friction inner running surface, ensuring stable sliding or rotation fit performance with mating shafts.

5. Stable soft-brass chip removal — Optimized tool geometry and cutting parameters prevent long, tangled brass chips from scratching profile surfaces, lowering micro-burr risk on complex helical contours.

Product Benefits

• Outstanding corrosion resistance — Brass material performs reliably under high-humidity, weakly acidic or alkaline working conditions, far outlasting standard steel sleeves in exposed environments.

• Built-in self-lubricating properties — Natural oil-retaining microstructure of brass reduces dry-running friction and wear on mating shafts, extending service life without frequent external grease top-ups.

• High thermal conductivity — Brass quickly dissipates frictional heat generated during continuous motion, preventing thermal expansion jamming and keeping the assembly dimensionally stable under high-cycle loads.

• Premium as-machined surface quality — Fine satin brass finish eliminates the need for extra protective plating for most standard applications, cutting lead time and part cost.

•  drawing-driven customization — All spiral groove geometry, lead angle, pitch, number of starts, flange layout and bore diameter are fully modified to match your exact design requirements, no off-the-shelf compromise.

Extended Material Selection

Beyond the standard spiral brass sleeves shown above, we offer full custom spiral sleeve manufacturing across your choice of material:

• Red pure copper sleeves for ultra-high thermal conductivity applications

• Stainless steel sleeves for heavy-load, food-grade or high-corrosion environments

• Aluminum alloy sleeves for lightweight and low-inertia motion systems

• Titanium alloy sleeves for aerospace, medical equipment and high-strength low-weight use cases

You can select the exact material grade that matches your requirements for corrosion resistance, weight reduction, mechanical strength or electrical conductivity.

Frequently Asked Questions

1. What CAD file formats do you accept for custom spiral brass sleeves?
   We work with STEP, IGES, SolidWorks native files, and annotated 2D PDF drawings. Please mark out all critical tolerance zones for the spiral groove, internal bore and mounting features when submitting your design.

2. What maximum tolerance accuracy can your CNC machined brass sleeves reach?
   Standard production tolerance hits ±0.008 mm, while for mission-critical spiral profiles and bearing fits we can hold accuracy down to ±0.005 mm.

3. Can you apply surface finishing treatments to these brass spiral parts?
   Yes — we offer passivation, bright electro-polishing, anti-tarnish coating, plus nickel, tin or silver plating to prevent brass oxidation and improve surface hardness.

4. Do you provide material test reports for custom machined brass parts?
   Absolutely — we can supply official mill certificates and full material compliance documentation if you require project audit traceability.

5. How long does it take to get my prototype and small batch spiral brass sleeves?
   Prototype delivery runs 7–11 working days after we complete DFM review and confirm the production quantity, while low-volume and mass production timelines are quoted based on part complexity and order size.