Renishaw A-5000-7812 Probe Styli

Measure holes and edges on sheet metal and other thin materials. The straight edges on these cylindrical styli maintain stable contact with thin materials better than the curved edges on a ball styli. However, they’re not as precise as ball styli. When they touch a workpiece, they trigger your coordinate measuring machine (CMM) probe to send a signal and measure geometric features. They’re often used with touch-trigger probes.

As a rule of thumb, you should use a stylus with the shortest length that works for your application. If a stylus is too long, it’s more likely to move farther than it should, reducing measurement accuracy.

Ruby Cylindrical-End Styli

Round Tip

Ruby ends are the most common because of how smooth, hard, and durable they are. Ruby is second in hardness only to diamond, so these styli won’t wear or lose their shape, which could lead to measurement errors. However, ruby doesn’t work well with aluminum or cast iron surfaces. Aluminum can rub off onto the ruby, and cast iron and ruby are prone to scratching each other during scanning jobs.

Round Tip—Probe styli with a round tip allow you to probe with the stylus end as if it were a ball stylus. The round end avoids touching your workpiece at more than one precise point, so they can detect small variations in flatness.

					Material			Ball
	End Dia., mm	Effective Working Lg., mm	Overall Lg., mm	Stem Dia., mm	Stem	Body	End Dia. Tolerance, mm	Precision Grade	Sphericity Tolerance, mm	Mfr.	Mfr. Model No.		Each
M2 × 0.4 mm







				Round Tip

				2	7.2	21.2	1.6	Stainless Steel	Stainless Steel	-0.00013 to 0.00013	5	-0.00013 to 0.00013	Renishaw	A-5000-7812	85175A595	0000000
				Renishaw Probe Stylus, Cylindrical Stylus A-5000-7812, 2mm Diameter Ruby End Product Detail QuantityEachIn stock Select a compatible file type: Parasolid