Ukrainian-American Company KODA Ltd is an Authorised distributor of Company Renishaw in the Ukraine.

The importance of styli for precision

Successful gauging depends very much on the ability of the probe’s stylus to access a feature and then maintain accuracy at the point of contact.

The performance of your gauging can easily be degraded if you use a stylus with poor ball roundness, poor ball location, bad thread fit or a compromised design that allows excessive bending during measurement.

At Renishaw used our expertise in probe and stylus design to develop a comprehensive range of CMM and machine tool styli to offer you the greatest possible precision.

What is a stylus?

A stylus is the part of the measuring system which makes contact with the component, causing the probes mechanism to displace. The generated signal enables a measurement to be taken.

This is why it is vital that the stylus delivers the greatest possible accuracy at the point of contact.

Choosing a stylus

The feature to be inspected dictates the type and size of stylus used. In all cases, however, maximum rigidity of the stylus and perfect sphericity of the tip are vital.

To maintain accuracy at the point of contact we recommend that you:

1. Keep styli short
   The more that astylus bends or deflects, the lower the accuracy. Probing with the minimum stylus length for your application is the best option.
   
   
2. Minimise joints
   Every time you join styli and extensions, you introduce potential bending and deflection points. Try, wherever possible, to keep to the minimum number of pieces for your application.
   
   
3. Keep the ball as large as possible
   There are two reasons for this:
   • firstly, it maximises your ball/stem clearance thereby reducing the chances for false triggers caused byshanking outon the stylus stem;
   • secondly, the larger ball reduces the effect of the surface finish of the component being inspected.

More information about the range of probes on Renishaw.com or in the catalog.

Most popular items

Renishaw styli for machine tool sensors

Part number	Ball diameter, mm	Overall length, mm	Stem material	Tip material	Thread
À-5000-3709	6	50	Ceramic	Ì4	Ruby
À-5003-2764	6	75	Ceramic	Ì4	Ruby
À-5000-3712	6	100	Ceramic	Ì4í	Ruby

Part number	Ball diameter, mm	Overall length, mm	Stem material	Tip material	Thread
À-5003-3680	3	50	Tungsten carbide	Rub	Ì4y

Crash protection device Renishaw

Part number	Overall length, mm	Stem diameter, mm	Stem material	Thread
À-5004-7621	12	6,9	Silver steel	Ì4

Tool datum disc Renishaw

Part number	Diameter mount, mm	Disc diameter, mm	Disc width, mm	Overall length, mm	Tip material
À-2008-0382	3,95	12,7	8	23	Tungsten carbide

Crash protection device Renishaw

Part number	Overall length, mm	Stem diameter, mm	Stem material	Thread
À-5004-7443	15	3,925	Silver steel	Ì4

Customised precision styli for metrology

A standard range ofover 500 parts and over 15,000 custom variants.

Custom styli can bedeveloped by Renishaw in-house design team to suit your specific application requirement.

More information about custom-made products on Renishaw.com.

Diamond styli

Renishaw has developed OPTiMUM™, diamond styli to support the increasing need for high-speed scanning applications

The ultimate solution for precision measurement Harnessing diamond, one of the hardest known materials on earth, OPTiMUM diamond styli are the pinnacle of stylus technology for metrology applications.

The diamond-coated styli give you unparalleled wear resistance, no material build-up, and increased flexibility for your most challenging of inspection demands.

More information about diamond styli OPTiMUM™ on Renishaw.com.

Compatibility with different systems

A broad range of probes guarantees compatibility with a variety of systems.

These include coordinate measuring machines, machine tools, scanning probes and Equator™ measuring systems from Renishaw.

In addition, they can be used with sensors from other manufacturers, including ZEISS sensors

and FARO®.