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LOCATING STEP FOR LINEAR GUIDES

(Frequently Asked Questions) Permanent link

Several customers have asked, "What would I safely size a locating step for a Misumi linear guide rail?"  We do not specify the chamfer size on most of our linear guide rails and it's not easy to determine the maximum radius on the step.  If you look at our height adjust blocks (GETA for miniature guides and BETA for standard guides), you will see the reference step feature for each size of the corresponding linear guide. You will also find step height and maximum radius for this product. It is safe to use the same dimensions for your locating step feature. The spacer height is configurable in 1mm increments. Many of our linear guides are now offered with mounting dowel holes on either the rail or blocks or both, which will allow you to get by without the locating steps altogether.

To find the actual chamfer size of a linear guide rail, please see our Global Voice article below:  Explanation of Linear Guides The Design of the Slide Guide Mounting Face. 

Posted by Marketing at 2/24/2009 10:33 AM Comments (0)

PRINCIPAL INFROMATION ABOUT COMMON SURFACE COATINGS USED BY MISUMI

(Materials, Surface Treatments and Hardness) Permanent link
  • Black Oxide - A uniform, mostly decorative black coating for ferrous metals and offers very limited corrosion protection. Used also to decrease light reflection.
  • Electroless Nickel Plating - Is typically used as a coating to provide a hard-ductile, wear-resistant and corrosion-resistant surface for operation in service up to 1000ºF (~538°C). Low coefficient of friction.
  • Hard Chrome Plating - Has excellent abrasion and wear resistance with HV750~ hardness rating.  In addition chrome has a low coefficient of friction and is resistant to heat (melting point 1900ºC (3451 ºF)).
  • Low Temperature Black Chrome Plating - you can find details about this coating in previous blog posted on 5-11-2008.
  • Chromates - The coatings formed from solutions containing both hexavalent and trivalent chromium provide maximum protection by creating mechanical barrier against corrosion.  The degree of corrosion protection is proportional to film thickness.  Chromate coatings are available in wide range of colors. The actual color depends on the type of chromating solution and thickness. Chromate coatings are used over zinc and cadmium coatings to simulate appearance of bright nickel and chromium. Misumi offers Bright Chromate and Trivalent Chromium (Trivalent Chromium is RoHS compliant).
  • Titanium Carbonitride (TiCN) Ceramic Coating - Coating based on PVD (physical vapor deposition) method.  Normally used for cutting tools, hardness of 3000HV and very high wear-resistant.
  • Dicoat - Based on TD (thermoreactive diffusion) method. Hardness of 3100~3800HV, very high wear-resistant. Developed and Patented by Toyota.
  • Anodizing - Oxidation of the surface producing a greatly thickened, hard film of aluminum oxide.  The anodic coatings are used primarily for corrosion protection and abrasion resistance.  The film can be colored by impregnation with dyes or pigments. Misumi uses clear and black anodize for their components.  For aluminum alloy products we also offer Alumite coating which is very similar to anodizing and also offer Hard Alumite Coating (Timing Pulleys) which is very similar to Hard Anodizing.  Alumite and Hard Alumite are done according to JIS standard and some properties of oxide film may slightly differ from Anodizing.
Posted by admin at 2/6/2009 11:08 AM Comments (0)
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MISUMI reserves the right to delete comments that may be false, illegal, harmful, commercial, defamatory, and libelous or about a competitor, and anything we find inappropriate as a comment for this topic without notice to the individual who commented. Any and all content and information provided in this blog is for informational purposes only. The Engineering Blog falls under the same terms and conditions and privacy policies as the MisumiUsa.com web site. MISUMI USA, Inc. makes no representations as to accuracy, completeness, suitability, or validity of any information and will not be liable for any errors, omissions, or delays in this information or any losses, injuries, or damages arising from its display or use. All information is provided on an as-is basis and is to be used at your own risk.