CNC Grinding Service

Are you looking for perfect finishes on hard parts? Do you need parts made with no errors? CNC grinding might be just what you need! At Istar Machining, we use computer-controlled grinding machines to make parts that fit together perfectly.

CNC grinding is like a special kind of cutting that uses spinning wheels covered in tiny hard bits. These wheels rub against metal and other materials to make them smooth and exactly the right size. Let’s learn all about it!

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23 Years

Istar Machining's years in the industry

300,000 square feet

The size of Istar Machining's factory

300 CNC machines

Our CNC equipment count

1000 skilled workers

Istar's number of skilled machinists/operators

What is CNC Grinding?

CNC grinding uses computer-controlled machines to shape parts using abrasive wheels. Unlike other cutting tools, grinding wheels have thousands of tiny cutting edges. This helps us make parts with:

Super smooth surfaces(less than 0.4µm Ra)
Very exact sizes(within 0.0001 inches)
Perfect shapeseven on very hard materials

Our CNC machining service experts program these machines to move the grinding wheel or the part in exact paths. This creates the perfect finish every time!

Types of CNC Grinding We Offer

We have many kinds of grinding to match your needs:

Cylindrical Grinding

This type makes round parts perfect. The part spins while a grinding wheel moves against it.

Best for: Shafts, pins, bearings, and rollers

Surface Grinding

This makes flat surfaces super smooth. The grinding wheel moves back and forth over the flat part.

Best for: Molds, dies, and flat machine parts

Centerless Grinding

This is great for making lots of round parts fast. The part sits between wheels without being held at the ends.

Best for: High-volume pins, shafts, and tubes

Tool & Cutter Grinding

This sharpens cutting tools to make them work like new again.

Best for: Fixing dull drill bits, end mills, and other tools

Why Our CNC Grinding Stands Out

Feature	What It Means For You
±0.0001″ Tolerance	Your parts fit together perfectly every time
Grinds Hard Materials (HRC 60+)	We can work with super hard steels that other methods can’t handle
45 m/sec Grinding Wheel Speed	Faster production without losing quality
Surface Finish ≤0.4 µm Ra	Parts so smooth they sometimes don’t need more polishing
Handles Parts Up To Ø500 mm x 1500 mm	We can work on small precision parts or large components

Our CNC parts machining team uses the best Fanuc and Siemens controls to make sure every grinding job is done right.

Materials We Can Grind

We can grind almost anything, including:

Hardened steel

Even super hard HRC 60+

Titanium

For aerospace and medical parts

alloy

Inconel and other tough alloys

Ceramic

Ceramics that other machines can't cut

Composite

Carbides used in cutting tools

Common Uses for CNC Grinding

Aerospace Parts

Jet engines need parts that can handle extreme heat and stress. Our grinding creates turbine blades and landing gear parts that meet strict aerospace rules.

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Medical Devices

Doctors need tools and implants that are perfectly made. We grind surgical instruments and joint replacements that help save lives.

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Automotive Components

Cars need parts that last for years. We grind crankshafts and gears that keep engines running smoothly.

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The CNC Grinding Process

Here’s how we make your parts perfect:

Planning: We study your drawings to pick the right grinding method
Programming: Our experts tell the computer exactly how to move the grinding wheel
Setup: We carefully mount the part and choose the right grinding wheel
Grinding: The machine removes material bit by bit until the part is perfect
Checking: We measure the part to make sure it meets your exact needs
Finishing: We clean and package the part so it arrives ready to use

Why Choose Istar Machining for CNC Grinding?

50+ CNC grindersfrom top brands like Studer and Okuma
In-process measuringthat checks parts while they’re being made
5-day standard turnaround(faster than most shops)
ISO 9001 certifiedquality systems
Experience with aerospace, medical, and automotive standards

Our surface grinding services team can help you get the perfect finish on your flat parts too!

Get Started With Your CNC Grinding Project

Ready to get the perfect parts for your project? Our team is ready to help!

Send us your drawings
Get a free quote within 24 hours
Approve the quote to start production
Receive perfect parts in as little as 5 days

Contact our team today to learn how our precision grinding can solve your toughest machining challenges.

Frequently Asked Question

Q: What's the difference between grinding and milling?

A: Grinding uses abrasive wheels to remove tiny amounts of material, making very smooth finishes. Milling uses cutting tools with defined edges and removes material faster but leaves a rougher finish.

Q: What materials can you grind?

A: We can grind almost any material including hardened steels, titanium, Inconel, ceramics, and carbides. Some plastics can be ground too.

Q: How long does CNC grinding take?

A: Simple parts might take just hours, while complex parts can take days. Our standard turnaround is 5 days, but we can work faster if you need it.

Q: What's the difference between cylindrical and centerless grinding?

A: Cylindrical grinding holds the part at both ends while it spins. Centerless doesn’t clamp the part at all, making it better for thin parts and high-volume work.