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Precision CNC turned shaft CNC turned brass fitting
On-Demand CNC Platform

CNC Turning in
San Jose, CA

We turn shafts, pins, bushings, and threaded parts for San Jose teams. Stainless, aluminum, brass, and plastics — one prototype or 5,000+ pieces.

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Securely upload your 3D CAD file for immediate pricing and DFM feedback.

±0.001"
Standard tolerances
on turned features
RivCut capability
24hr
Quote turnaround
on most turning jobs
Upload to response
98%
CMM inspected
before shipping
RivCut standard
1–5K+
Prototypes through
production runs
No minimums
CNC Turning Explained

What Is CNC Turning?

CNC turning is a machining process where a lathe spins your raw material while precision cutting tools shape it into round parts. It produces shafts, pins, bushings, fittings, and other cylindrical components with smooth surfaces and tight tolerances — fast, repeatable, and accurate.
1

Material Rotates

Bar stock or blank is loaded into the lathe chuck and spins at high speed.

2

Tools Cut

Carbide cutting tools move along the material to remove material and shape your part.

3

Part Complete

Finished part is inspected on CMM and shipped with full documentation.

Why RivCut

Built for Precision Turning

Your turned parts need a shop that treats quality, speed, and material knowledge as seriously as tolerances.

Live Tooling Capability

Our lathes feature live tooling for milling flats, drilling cross-holes, and cutting slots — all in one setup. Fewer operations mean faster delivery and tighter tolerances.

CMM Inspection

Every turned part is CMM inspected before shipping. You get a documented inspection report with every order — no guessing, no shortcuts.

Material Versatility

We turn aluminum, stainless steel, titanium, brass, copper, Delrin, PEEK, nylon, and polycarbonate. Every order ships with material certifications.

Fast Turnaround

Quotes in 24 hours. Prototypes in 3–5 days. Production runs on your timeline. We communicate directly — no layers of sales reps between you and the shop floor.

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What We Turn

Turned Part Types

From precision shafts to threaded fittings — CNC turned and fully inspected.

Shafts & Spindles

Drive shafts, motor shafts, spindle assemblies, and stepped shafts in steel, stainless, and titanium. Ground finishes and tight runout tolerances.

±0.0005" runout

Bushings & Sleeves

Press-fit bushings, bearing sleeves, wear rings, and spacers. Bronze, brass, Delrin, and hardened steel with precise bore tolerances.

Tight bore fits

Fittings & Connectors

Threaded fittings, hydraulic connectors, barb fittings, and adapter bodies. Brass, stainless steel, and aluminum with leak-tight thread quality.

Thread class 2A/2B

Pins & Dowels

Alignment pins, roll pins, taper pins, and locating dowels. Hardened steel and stainless with ground OD finishes for precision fits.

Ground finish

Knobs & Handles

Knurled knobs, adjustment handles, thumb screws, and control dials. Aluminum, brass, and stainless with anodize-ready finishes.

Knurling available

Nozzles & Tips

Spray nozzles, dispensing tips, injection nozzles, and orifice bodies. Stainless steel and brass with micro-bore drilling and polished bores.

Micro-bore capable
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Precision turned 4140 steel shaft inspected on CMM at RivCut
CMM Verified — All Critical Dimensions Passed
Real Part. Real Results.

Precision Shaft — 4140 Steel

Turned for a robotics OEM requiring ultra-tight runout on a motor drive shaft. Delivered in 5 business days with full first article inspection package.

±0.0005"
OD runout
tolerance held
16 Ra
Surface finish
on bearing journals
5 Days
Quote to delivery
turnaround
100%
First article
inspection pass rate
  • Dimensional inspection report (CMM data included)
  • Material certification & heat lot traceability
  • First article inspection report per customer spec
  • Certificate of Conformance included
What Ships with Every Order

Documentation. Quality. Expertise.

Precision turning demands more than good parts. Here is what you get on every order.

Full Documentation

Every order ships with everything your quality team needs.

  • Dimensional inspection reports
  • Material certs with heat lot traceability
  • First article inspection reports
  • Certificate of Conformance

Verified Quality — CMM

We inspect before we ship. No exceptions.

  • CMM inspection on every order
  • NIST-traceable calibrated gauges
  • ±0.001" standard, ±0.0005" critical
  • Free DFM review on every upload

Precision Turning Expertise

Deep knowledge of lathe work across materials and geometries.

  • Live tooling for mill-turn operations
  • Thread cutting & knurling
  • Swiss-type turning for small parts
  • Multi-material capability
How It Works

From CAD File to Shipped Parts

Three steps. No runaround. Built for engineering timelines.

Step 1

Upload Your CAD File

Send your STEP or IGES file. Select material, quantity, and finish. We review for manufacturability and respond within 24 hours.

Step 2

We Turn & Inspect

Your parts run on our CNC lathes with live tooling. Every order gets CMM inspection. We verify every critical dimension before anything ships.

Step 3

Ship with Full Documentation

Parts ship with dimensional inspection reports, material certs, and full documentation package. Everything your quality team needs.

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Tools & Related

Engineering Tools & Related Services

Free Engineering Calculators

Related Services

Local Market

CNC Turning for San Jose Companies

San Jose manufacturers rely on precision cnc turning for demanding applications across multiple industries.

24hr
Quote Turnaround
Upload your file, get a real price fast
50
States We Ship To
Nationwide coverage from Union City, CA
100%
CMM Inspected
Every part, every order

Semiconductor Equipment

San Jose semiconductor equipment companies need ultra-precise turned pins, bushings, and shafts for wafer handling systems. These components position silicon wafers to within microns.

Hardware Startups & Prototyping

Hardware startups in Santa Clara and Cupertino need turned standoffs, threaded inserts, and knobs for consumer devices. Apple's supply chain has trained the Valley to expect flawless cosmetic finishes on turned parts.

Optical and photonics companies along the 101...

Optical and photonics companies along the 101 corridor need turned lens barrels, fiber ferrules, and mounting cylinders with bore finishes under Ra 8 microinches. We turn these precision optical components on Swiss machines with live tooling for complete parts in a single setup.

Local Industry Ecosystem

SEMI member companies need precision-turned wafer handling components, vacuum feedthroughs, and gas delivery fittings. The Silicon Valley Organization connects hardware startups with local turning shops that deliver fast without minimums.

Local Resources

Manufacturing Organizations in San Jose

Chambers, associations, and development groups that support San Jose manufacturers.

Silicon Valley Organization (SVO)

San Jose's chamber of commerce. Connects technology, manufacturing, and service companies across the South Bay.

SEMI

Global semiconductor industry association headquartered in Milpitas. Over 2,500 member companies across the equipment and materials supply chain.

Silicon Valley Leadership Group

Public policy trade association representing Silicon Valley employers on workforce, transportation, and economic issues.

SVMEP (Silicon Valley Manufacturing Extension Partnership)

Helps Bay Area manufacturers adopt lean practices, find suppliers, and grow their businesses.

FAQ

CNC Turning Questions

CNC turning is a way to make round parts from metal or plastic. A lathe spins your material while cutting tools shape it. This makes shafts, pins, bushings, and fittings with smooth surfaces and tight tolerances.
Most metals and plastics can be CNC turned. We work with aluminum, stainless steel, titanium, brass, copper, Delrin, PEEK, nylon, and polycarbonate.
Pricing depends on material, complexity, and quantity. Simple turned parts start around $30–$120 each. Upload your file for an exact quote in 24 hours.
Live tooling adds rotating tools to a CNC lathe. This lets us mill flats, drill cross-holes, and cut slots without removing the part. It combines turning and milling in one setup for faster delivery.
Our standard turning tolerance is ±0.001". We can hold ±0.0005" on critical dimensions like bearing journals and mating surfaces. Swiss turning can achieve even tighter tolerances on small parts.
CNC turning spins the material on a lathe to make round parts like shafts and bushings. CNC milling holds the material still and uses a spinning cutter to make flat and 3D shapes. With live tooling, we can do both in one setup.
Yes. Our Swiss-type lathes make small, precise parts under 1 inch in diameter. They hold tight tolerances on tiny components like medical pins, electronic contacts, and miniature shafts.
We accept STEP, IGES, DXF, PDF, SolidWorks (.sldprt), and STL files. STEP files work best because they keep all the design details.
We have no minimum. You can order just one part. We make everything from single prototypes to production runs of 5,000+ pieces. Every order gets the same care and precision.
Upload your CAD file on our instant quote page. You'll get a price within 24 hours. No phone calls needed. No pressure.
Yes. We work with San Jose teams across semiconductor, hardware startup, and consumer electronics and more. Most orders reach the South Bay in 1–2 business days via ground shipping from our Bay Area shop. We also serve teams in Sunnyvale, Santa Clara, Palo Alto, and across Silicon Valley.
Most orders ship in 5 to 10 business days. Rush orders ship in as few as 3 days. Most orders reach the South Bay in 1–2 business days via ground shipping from our Bay Area shop.
San Jose hardware startups need precision-turned standoffs, pins, and heat-sink components. We turn parts fast so product launches stay on schedule. We offer fast quotes, no minimums, and CMM inspection on every order.
Wafer handling pins, lift shafts, and centering bushings are common. These parts position wafers to within microns, so concentricity and surface finish are critical. We turn them from 316L stainless and ceramic-grade aluminum.
Yes. Knobs, standoffs, and threaded inserts for consumer devices need flawless surface finishes. Apple-level cosmetic standards are normal for our San Jose customers. We deliver the surface quality retail products demand.
Yes. Lens barrels, fiber ferrules, and mirror mounts with bore finishes under Ra 8 microinches are regular orders. We turn these on Swiss machines with live tooling for complete single-setup parts.
Aluminum 6061, 303 stainless, and brass cover most startup turning work. Consumer-facing products also use anodizable aluminum grades. We can recommend the best material for your application and finish requirements.
The Silicon Valley Organization is San Jose's chamber of commerce connecting tech and manufacturing companies. SVMEP (Silicon Valley Manufacturing Extension Partnership) helps Bay Area manufacturers adopt lean practices. Joint Venture Silicon Valley tracks industry and innovation trends across the region.
Yes. SEMI is the global semiconductor industry association, headquartered in Milpitas near San Jose. It represents over 2,500 member companies across the equipment and materials supply chain. The Silicon Valley Leadership Group also represents semiconductor employers on workforce and policy issues.
Local Service

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No minimums · Single prototypes to production runs · Ships anywhere in the US

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