Custom CNC Machined Flange Steel Sleeves

Feature

Details & Capabilities

Available Materials

Carbon Steel (1020, 1045), Alloy Steel (4140, 42CrMo), Stainless Steel (304, 316L, 17-4PH)

Machining Process

3/4/5-Axis CNC Turning, Milling, Grinding, Heat Treatment (Hardening/Nitridation)

Tolerance Precision Minimum

±0.005mm (Industry Standard)

Surface Treatment

Black Oxide, Zinc Plating, Chrome Plating, Electropolishing, Passivation

Customization Range

Bore Diameter, Flange Thickness, Hardness (HRC), Oil Grooves, Knurling

Dimensional Accuracy:

High-precision CNC machining ensures a perfect fit for tight-tolerance assemblies.

Integrated Flange Structure:

Provides a secure mechanical stop and simplifies alignment during installation.

Extended Durability:

High-grade steel and optional heat treatment significantly enhance fatigue strength.

Surface Excellence:

Low roughness (Ra 0.4-0.8) reduces friction and prevents premature shaft wear.

Construction Machinery:

Excavator joints, pivot pins, and load-bearing bushings.

Automotive & Racing:

Suspension systems, engine mounts, and transmission parts.

Hydraulic & Pneumatic:

Cylinder rod guides and valve components.

Energy & Power:

Wind turbine components and power transmission housings.

Material Certification:

Raw material chemical analysis report (MTR).

In-Process Inspection:

Real-time monitoring of critical dimensions.

Final Inspection:

100% inspection using CMM (Coordinate Measuring Machine), Micrometers, and Hardness Testers.

Sample Lead Time:

20 business days.

Mass Production:

28-40 days depending on complexity and volume.

Packaging:

Rust-proof oil coating + Plastic bag + Individual cell carton + Export Plywood Case (Seaworthy).

Shipping Options:

Worldwide delivery via Sea (FCL/LCL), Air Freight, or Express (DHL/FedEx/UPS).

Flexible MOQ:

We support both prototyping and large-scale mass production.

Engineering Support:

Professional DFM (Design for Manufacturing) feedback to optimize costs.

After-sales service:

Full accountability for material defects or dimensional non-compliance.

Q1:

What file formats do you accept for custom quotes?

A1:

We prefer STEP, IGES, or X_T for 3D files and PDF for 2D drawings with tolerances.

Q2:

Can you provide material certification and inspection reports?

A2:

Yes, every shipment includes a Material Test Report (MTR) and a Dimensional Inspection Report.

Q3:

Do you offer surface hardening for wear resistance?

A3:

Absolutely. We offer induction hardening, carburizing, and nitriding to meet your specific HRC requirements.