Renishaw M4 Stainless Steel 100x5mm Machine Tool Styli New in Box with Warranty A-5000-7522

MSRP: $79.00
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1.00 LBS
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Product Description


New: A brand-new, unused, unopened, undamaged item in its original packaging



Country of Manufacture:   UNITED KINGDOM

Brand:    RENISHAW


MPN:   A-5000-7522



Item Description

Renishaw M4 Ø5 mm ruby ball, stainless steel stem, L 100 mm, EWL 83.2 mm New with 1 Year Warranty.


Straight Styli

Straight styli are designed to inspect simple features where direct, unobstructed contact with a measured surface is possible. A stainless steel stem offers excellent rigidity and is ideal for applications where weight is not critical. Ruby is regarded as the industry standard for stylus tips. It is one of the hardest materials available and suitable for most applications. Due to adhesive pickup, ruby tips are not recommended for scanning aluminium parts.

Equivalent to Q-Mark part number: TM4-50102-S.

Technical Table

Ball diameter (mm) 5
Centre styli N
EWL (mm) 83.2
Holder material Stainless steel
Overall length (mm) 100
Stem diameter (mm) 4.5
Stem material Stainless steel
Thread M4
Tip material Ruby

A few simple rules can be applied to maximize accuracy for most probing applications. 

Overall Length

Renishaw uses a standard description of overall length, measured from the rear mounting face of the stylus to the centre of the ball. 

Effective Working Length (EWL)

This is measured from the centre of the ball to the point at which the stem will foul against the feature when measuring 'normal' to the part. 

Keep Styli Short

The more the stylus bends or deflects, the lower the accuracy. Probing with the minimum stylus length for your application is the best option. 

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 possible for your application.

Keep the Stylus Ball as Large as Possible

There are several reasons for this:

  • it maximises your ball/stem clearance, thereby reducing the chance of false triggers caused by 'shanking out' on the stylus stem, and increasing the EWL;
  • a larger ball allows a larger stem diameter, increasing the stiffness of the stylus;
  • the larger ruby ball reduces the effect of the surface finish of the component being inspected.

EWL can also be affected by assembly tolerances. For this reason Renishaw styli are assembled to exacting standards in controlled conditions.


This is by far the best price you will find on a Renishaw M4 Ø5 mm ruby ball, stainless steel stem, L

100 mm, EWL 83.2 mm New with 1 Year warranty. Purchase with confidence from a Paypal verified

retailer. If what you order is not what you receive you will be refunded the full purchase price of this

sale. Metrology Parts would like the opportunity to earn your business for this sale and all of your

future Renishaw needs. If you have any questions feel free to contact us. With 36 plus years of

experience with Renishaw products we can help with all of your application needs as well as your

after sales support.

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