Custom Shaft Machining | Weldo

Custom Shaft Machining

Drawing-based CNC machining for metal and plastic shafts with the dimensions, fits, features, treatment, and finish required by your assembly.

Fits and functional surfaces to drawing

Turning, milling, grinding, and finishing

Prototype to repeat production

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Custom Shaft Types We Machine

Select the shaft structure from its motion, load, assembly space, and mating components.

Straight Shaft

Simple support or drive shaft with controlled diameters and end details.

Motor Shaft

Journals, keyways, threads, and rotor interfaces built around the assembly.

Spline Shaft

Multiple teeth transfer torque while controlling fit, alignment, and axial movement.

Stepped Shaft

Multiple diameters create bearing seats, shoulders, and precise component locations.

Custom Features Machined to Your Assembly

We control the surfaces that locate components, transfer torque, retain parts, and support rotation.

Bearing JournalsControlled fits for stable rotation and bearing support.

ShouldersPositive axial location for mounted components.

Keyways & SplinesTorque transfer to hubs, gears, and couplings.

Threads & HolesFastening, lubrication, sensors, pins, and connections.

Metal and Plastic Options for Custom Shafts

Choose the material by load, wear, corrosion, temperature, weight, dimensional stability, and required finishing.

Carbon Steel

Strong and economical for general shafts, pins, and transmission parts.

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Common grades: 1018, 1045, 1060
Typical service: General machinery, rollers, and moderate-load drives.
Treatment & finish: Black oxide, zinc plating, hardening, or grinding.

Alloy Steel

Heat-treatable strength and fatigue resistance for highly loaded shafts.

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Common grades: 4140, 4340, 42CrMo
Typical service: Drive systems, gear shafts, axles, and heavy machinery.
Treatment & finish: Quench and temper, nitriding, induction hardening, or grinding.

Stainless Steel

Corrosion resistance and cleanliness for wet or controlled service.

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Common grades: 303, 304, 316, 17-4 PH
Typical service: Food, medical, marine, and chemical equipment.
Treatment & finish: Passivation, electropolishing, polishing, or grinding.

Bearing Steel

High hardness and rolling-contact fatigue resistance after heat treatment.

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Common grades: 52100 / GCr15, 440C
Typical service: Bearing races, precision journals, and wear-critical shafts.
Treatment & finish: Hardening, tempering, stabilization, and precision grinding.

Aluminum

Low mass and good machinability for weight-sensitive systems.

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Common grades: 6061-T6, 6082-T6, 7075-T6
Typical service: Automation, instruments, robotics, and light-duty drives.
Treatment & finish: Anodizing, hard anodizing, chemical film, or polishing.

Titanium

High specific strength and corrosion resistance for demanding assemblies.

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Common grades: Grade 2, Grade 5 / Ti-6Al-4V
Typical service: Aerospace, marine, medical, and chemical equipment.
Treatment & finish: Passivation, anodizing, polishing, PVD, or nitriding.

Brass

Good machinability, corrosion resistance, and low-friction behavior.

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Common grades: C36000, C46400, H59, H62
Typical service: Valves, instruments, electrical, and fluid-control shafts.
Treatment & finish: Polishing, plating, passivation, or bead blasting.

Bronze

Wear resistance and anti-galling behavior for rotating contact.

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Common grades: C93200, C95400, C86300, ZCuSn10P1
Typical service: Marine equipment, pumps, and heavy-duty mechanisms.
Treatment & finish: Machined finish, polishing, grinding, or plating.

Tool Steel

Wear resistance and hardness for tooling shafts and demanding interfaces.

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Common grades: D2, H13, O1
Typical service: Tooling, dies, fixtures, and wear-loaded elements.
Treatment & finish: Hardening, tempering, nitriding, polishing, or grinding.

Nickel Alloy

Corrosion and elevated-temperature strength for severe service.

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Common grades: Inconel 625, Inconel 718
Typical service: Chemical, energy, aerospace, and high-temperature systems.
Treatment & finish: Passivation, polishing, grinding, or shot peening.

Ductile Iron

Good damping and castability for moderate-load shaft blanks.

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Common grades: ASTM A536 65-45-12, QT450-10, QT600-3
Typical service: Industrial machinery and vibration-sensitive equipment.
Treatment & finish: Phosphate coating, painting, or local hardening.

POM

Low friction and stable dimensions for precision plastic shafts.

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Common grades: POM-C, POM-H / Delrin, antistatic POM
Typical service: Automation, rollers, guides, and low-noise mechanisms.
Finish: Fine machining, deburring, or mechanical polishing.

Nylon / PA

Tough, wear-resistant material for impact and sliding duty.

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Common grades: PA6, PA66, PA12, MC Nylon, PA66-GF30
Typical service: Conveyors, pulleys, rollers, and vibration-absorbing parts.
Selection note: Allow for moisture absorption and dimensional change.

PEEK

High-temperature strength and chemical resistance for precision service.

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Common grades: Virgin, GF30, CF30, bearing grade
Typical service: Aerospace, medical, semiconductor, and chemical equipment.
Finish: Fine machining, polishing, or plasma treatment.

PTFE

Very low friction and chemical resistance for lower-load sliding shafts.

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Common grades: Virgin, glass-filled, bronze-filled, carbon-filled
Typical service: Chemical, sealing, and electrically insulating systems.
Selection note: Account for creep, load, temperature, and stability.

UHMW-PE

Impact and abrasion resistance for guides and light-duty shafts.

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Common grades: Virgin, antistatic, conductive, recycled grades
Typical service: Material handling, food equipment, and wet environments.
Finish: Machining, deburring, corona, or plasma activation.

PPS

Low moisture absorption and heat resistance for stable mechanisms.

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Common grades: Unfilled, GF40, conductive PPS
Typical service: Electrical, chemical, and elevated-temperature equipment.
Finish: Fine machining, deburring, or plasma activation.

Polycarbonate / PC

High impact strength with clear and opaque grade options.

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Common grades: General-purpose, machine-grade, glass-filled PC
Typical service: Guards, instruments, and lightly loaded mechanisms.
Finish: Polishing, coating, or printing after preparation.

ABS

Cost-effective machinability for prototypes and non-critical shafts.

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Common grades: General, flame-retardant, antistatic ABS
Typical service: Fixtures, positioning parts, and light-duty mechanisms.
Finish: Sanding, polishing, painting, or prepared plating.

PU / TPU

Elasticity and wear resistance for compliant rollers and damping.

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Common grades: Cast PU, TPU, polyester PU, polyether PU
Typical service: Drive rollers, cushioning, and impact-absorbing systems.
Finish: Precision grinding, trimming, or surface texturing.

Modified Plastics

Filled compounds tailor stiffness, friction, conductivity, or wear.

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Common types: GF, CF, PTFE-filled, conductive, antistatic
Typical service: Application-specific mechanical and electrical systems.
Selection note: Confirm properties with material data and machining trials.

Final grade, condition, hardness, and treatment are confirmed against the drawing, mating parts, load, speed, wear, temperature, corrosion, and dimensional-stability requirements.

How We Machine Custom Shafts

CNC turning establishes the main axis and diameters. Secondary machining, treatment, grinding, and inspection complete the specified features.

Drawing Review

Confirm datums, fits, surfaces, material, and inspection needs.

Material Setup

Match bar, tube, forging, or prepared blank to the part.

CNC Turning

Establish the axis, journals, diameters, shoulders, and faces.

Feature Machining

Machine keyways, splines, flats, threads, holes, and grooves.

Treatment & Finish

Apply heat treatment, coating, or grinding as specified.

Inspection & Packing

Verify functional dimensions and protect finished surfaces.

Custom CNC-Machined Shaft Parts

Prototype and repeat-production shafts in different materials, structures, and finishes.

Custom Shaft Quality and Delivery Control

Material, datum strategy, machining route, critical checks, finish, and packing requirements are confirmed before production.

Drawing First

Identify the dimensions and surfaces that control assembly.

Process Matched

Use turning, milling, grinding, and finishing only where required.

Critical Checks

Measure functional features during production and final inspection.

Protected Shipment

Clean, identify, and protect finished shafts before dispatch.

Custom Shaft Machining Questions

What should I send for a quotation?

Send a 2D drawing or 3D model, material, quantity, tolerances, finish, and required inspection points.

When does a shaft need grinding?

Grinding is used when journal fit, roundness, runout, or surface finish exceeds normal turning capability.

When should I specify a spline shaft?

Specify splines for multi-tooth torque transfer, accurate centering, or controlled axial sliding.

How do you protect the delivery schedule?

Material availability, setups, outside treatments, inspection points, and packing are confirmed before a production date is committed.