Gage Blocks
SERIES 516
Precision gage blocks are the primary standards vital to dimensional quality control in the manufacture of parts. Mitutoyo offers a complete selection of gage blocks available in a choice of rectangular or square, metric or inch and steel or CERA (ceramic) types.
Selecting Gage Blocks • Select gage blocks in accordance with the combination range required. If a large length is required, add a long block set. • Select gage blocks in accordance with the minimum length step required. Add wear block sets if necessary. • If a set containing a large number of gage blocks is selected, the number of combination gage blocks required for a length is reduced and the number of combinations is increased. The accuracy will be retained and damage will be reduced. • The specific gage block set for micrometer inspection and caliper inspection is available. • If using only one length repeatedly, it is a good idea to purchase discrete gage blocks. • The 2mm-based gage blocks, which take the base of the minimum length step as 2mm, are easy to handle and will not warp, as compared to the 1mm-based gage blocks.
Accuracy Mitutoyo gage blocks guarantee such a high accuracy that users can use them without anxiety. Mitutoyo has established a traceability system for our measurement products, up to the Metrology Management Center of the National Institute of Advanced Industrial Science and Technology (AIST), and we have been certified by the Japanese government as an accredited laboratory.
Wringing The lapping technique is one of several Mitutoyo specialties. Our advanced lapping technique, developed for more than a half century, allows us to achieve the best flatness and surface roughness needed for gage blocks.
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Abrasion Resistance and Dimensional Stability High-carbon, high-chrome steel is employed to sufficiently satisfy a variety of material characteristics required for gage blocks. A high degree of hardness, obtained by our heat treatment technology, as well as methodically repeated heat treatment, have successfully reduced deterioration change over time.
Rectangular Block
CERA Blocks CERA blocks, made of ceramic materials with superior surface quality, were developed by Mitutoyo ultra-precision machining techniques and solves problems commonly associated with steel gage blocks. 1. Corrosion-Resistant Anti-corrosion treatment is not required when handled normally (i.e. with fingers), resulting in simple maintenance and storage. 2. No Burrs Caused by Dents, etc. Since the CERA Block is very hard it will not scratch and is highly resistant to burrs. If a burr is formed, it can easily be removed with a ceramic deburring stone (Ceraston). 3. Abrasion Resistant CERA Blocks have 10 times the abrasion resistance of steel gage blocks. 4. Dimensional Stability CERA Blocks are free from dimensional change over time. 5. Marking The black characters, indicating the nominal length, are inscribed by laser and are clearly visible against the white surface of the block.
Gage Size
Face Width (A) Face Depth (B)
Up to 2”
1.181”
.355”
Over .2” up to 40” 1.378”
.355”
Up to 10mm
30mm
9mm
Over 10mm up to 1000mm 35mm
9mm
Square Block
Resistance to wear
(m)
Steel
Gage Size
Face Width (C) Face Depth (D)
0.4
Inch (up to 40”)
.95”
.95”
Silicon nitride
Tungsten carbide
Metric (up to 1000mm) 24.1mm
24.1mm
0.2
CERA Block
0
2000
4000
6000 8000 Amount of travel (m)
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