Custom turned hubs are rotational components engineered to interface shafts, bearings, couplings, wheels, and drive mechanisms. Machined using multi-axis CNC lathes and precision turning centers, these components deliver tight concentricity, precise bore sizing, and reliable alignment across mechanical assemblies.

Technical Specifications

Specification	Standard Range
Outer Diameter	5 mm to 200 mm
Component Length	Up to 300 mm
Machining Tolerance	±0.01 mm to ±0.02 mm
Surface Finish	Ra 0.4 µm to Ra 1.6 µm

Engineered Hub Configurations

Shaft-Mount Hubs:

Machined for direct shaft mounting with controlled internal bore fits to prevent rotational slip and vibration.

Coupling Hubs:

Designed for drive systems, incorporating shoulders, internal threads, and keyways to join co-axial shafts seamlessly.

Flanged Hubs:

Feature an expanded circular mounting flange with secondary bolt-hole patterns for rigid structural attachment.

Wheel and Roller Hubs:

Produced to maintain strict radial runout limits and secure bearing seats under continuous operational loads.

Material Selection Guide

Aluminum:

Offers lightweight structural support for motion control systems and dynamic machinery components.

Stainless Steel:

Provides superior corrosion resistance for demanding marine, medical, and food processing environments.

Carbon Steel:

Delivers high tensile strength and wear resistance for heavy industrial drive assemblies.

Copper Alloys:

Provides high thermal and electrical conductivity for specialized power transfer applications.

Precision CNC Machining Capabilities

Primary Turning: Multi-axis CNC lathes cut rotational profiles, shoulder steps, chamfers, and precision bores.

Secondary Features: Live tooling drills cross-holes, cuts external threads, mills keyways, and machines flats in a single setup.

Surface Treatment & Finishing Operations

Anodizing & Passivation:

Improves surface hardness for aluminum and enhances chemical resistance for stainless steel.

Protective Coatings:

Trivalent chromium zinc plating, electroless nickel plating, and black oxide prevent surface corrosion.

Mechanical Finishing:

Bead blasting produces a uniform matte appearance and deburring clears tight assembly tolerances.

Quality Control & Dimensional Verification

Optical & CMM Inspection: Coordinates and critical profiles are verified using 3D measurement systems and optical comparators.

Precision Gauging: Bores and threads are checked with micrometers, pin gauges, and pitch gauges prior to shipment.

Targeted Industry Applications

01/

Automotive Drives: Precision shaft adapters, steering couplings, and custom wheel hubs.

02/

Medical Equipment: Low-tolerance concentric components for lab instruments and diagnostic devices.

03/

Industrial Automation: Heavy-duty conveyor roller hubs and stepper motor shaft connectors.

04/

Electronics Assemblies: Conductive rotary joints, cooling fan mounts, and encoder hubs.

RFQ Submission Requirements

Drawing Files: 2D PDF drawings or 3D CAD files (STEP, IGES).

Material & Quantity: Specified alloy grades, target order volumes, and delivery schedules.

Finishing Data: Required tolerances, surface roughness limits, and protective coating requirements.

FAQ

Q: What details are needed for an accurate quotation?

A: Submit 2D drawings or 3D CAD models detailing dimensions, material grades, order volume, tolerances, and surface finish requirements.

Q: Can custom hubs include cross-holes and keyways?

A: Yes, multi-axis turning centers execute live tooling operations for cross-hole drilling, flat milling, external threading, and keyway slotting.

Q: Which materials are available for custom hub production?

A: Production options include aluminum alloys, stainless steel, carbon steel, copper alloys, and engineering plastics.

Q: What tolerances can be maintained on critical internal bores?

A: Machining capabilities maintain tight tolerances down to ±0.01 mm on internal bore diameters and mating shaft journals.

Q: What surface treatments are provided after machining?

A: Available post-processing treatments include anodizing, trivalent chromium zinc plating, electroless nickel plating, passivation, and bead blasting.

Q: Are short-run prototypes and volume production supported?

A: Flexible manufacturing setups accommodate short-run prototype orders, pilot batches, and high-volume production schedules.

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