Motion Control – Choose Best Precision Shafting & Linear Bearings With Selection Guide From LM76!

Motion Control – Precision Shafting
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E. Longmeadow, MA – Motion Control  — LM76 offers extremely competitive pricing on all types of precision shafting: round, hollow, predrilled, continuous support extrusions, predrilled & assembled shafting. We specialize in standard linear shafting: RC60/Class L Linear Shafting, 300 series s/s Linear Shafting. For most applications, RC60/Class L is the linear shafting of choice with all LM76 linear bearing styles: Minuteman, Ceramic Coated and FDA/USDA compatible.

When using a linear motion self lube linear bearing of any kind PTFE like our industry leading Minuteman™ linear bearing, remember that non-lubricated linear shafting will oxidize and rust. LM76’s soft 300 series stainless linear shafting ( RB25 ) is a natural selection for both our Minuteman™ and FDA/USDA compliant linear bearings where washdown and chemical resistance are a must.  To you help select the best shafting and bearings for your application review carefully the “Selection Guide” below:

RC60 1060 Steel Linear Shafting
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Standard linear shafting is made from 1060 steel which is case hardened to a surface hardness of Rockwell 60 hardness. This is the best choice for applications which employ rolling element bearings: linear ball bearings or roller type bearings i.e., Teflon Composite, Linear Ball Bearings or our Jet Rail Bearings. RC60 will oxidize and rust. Thus, lubricated bearings keep RC60 shafting protected. Keep this in mind when using a dry running bearing.


Chrome Plated 1060 Steel Linear Shafting Shafting

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Chrome Plated 1060 steel is an option when the system experiences washdown/chemicals or is employed with non-abrasive, self lubricating bearings like our Minuteman Self Lubricating Bearing. Fluidline linear bearings. Chrome Plated linear shafting is also used in applications that require a decorative finish. It is more expensive than standard RC60 but only slightly – approx: 10-15%.


440C Stainless Linear Shafting

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This is a high carbon martensitic ( increased chromium and carbon to improve toughness and corrosion resistance ) stainless with moderate corrosion resistance good strength and the ability to obtain and keep excellent hardness (Rc55) and wear resistance. This grade supports rolling element bearings which require a hardened shaft. *Because this stainless alloy has carbon added to it, it will oxidize in washdown applications. It is allowed by many inspectors when rolling element bearings are absolutely necessary. However, 300 series stainless steel is preferable.


300 Series StainlessLinear Shafting 303, 304, 316

motion control- shaft selection 4Austenitic stainless steels, because of their high chromium and nickel content, are the most corrosion resistant of the stainless group providing excellent mechanical properties. They cannot be hardened and are not magnetic. All LM76 Minteman Self Lubricating bearings ( Minuteman and FDA grades ) employ no abrasive fillers. Thus, they are totally compatible with soft 300 series stainless steels – the most corrosion resistant grades. 300 series stainless grades: 303, 304 and 316 are the best choice in washdown/marine and applications where materials cannot be magnetic. 316 stainless is the hardest of this family and the most corrosion resistant. It is commonly employed in naval applications.


Ceramic Coated Aluminum Shafting

motion control- shaft selection 4Ceramic Coated Aluminum linear shafting is manufactured from T6061 extruded aluminum. The extrusion is ceramic coated to make it a lightweight, corrosion resistant shafting option. This shafting is not an option for systems which experience high loads, impact or long spans which may see a high degree of defection. Although the ceramic coating offers a RC60 plus hardness, it is not suitable for use with linear ball bearings. If the shaft is totally coated( no bare aluminum ) it is FDA/USDA compliant and is extremely tolerant of washdown and chemicals.


Protective Coatings

motion control - shafting selection 7Added Lubricity. The unique nature of the Armoloy®TDC process will enhance the lubricity of your Armoloy® coated rails. This added lubricity is especially important in applications requiring minimum to no lubricating agents being present in the processing line. Increased Corrosion Resistance. Armoloy® will improve the corrosion resistance of standard linear rails in most chemical or water environments to be comparable to or exceed that of 440C stainless steel. Armoloy® coating also has the added benefit of longer wear life than stainless steel due to its higher surface hardness (78Rc) and immediate cost savings realized from the use of non-stainless rails. Armoloy® is applied with a .0001/.0002″ deposit per side, eliminating the problem with major size/tolerance clearances. Armoloy® will create an absolute bond to your linear rail that will not chip, flake, or peel in field applications. Armoloy® is also FDA-USDA approved for use without concern in food and medical processing applications and is being used in many applications where adverse conditions prevail.

Still have Questions? For help in selecting best bearing, and or shaft combination, contact Mike Quinn at: LM76. Call him at 413-525-4166, Fax: 413-525-3735 or E-Mail:

To follow the NEW Series from LM76, THE ENGINEERING EDGE! and learn about interesting Outside-of-the-Box solutions developed by LM76 to solve some interesting linear motion problems! CLICK HERE

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About LM76

Founded in 1976, LM76 has been a leading designer/manufacturer of linear bearings, slides and linear motion systems. LM76 is renowned for its industry leading Minuteman PTFE Composite linear bearings. LM76 is a leading supplier of precision linear shafting: RC60, 300 Series Stainless Steel, and ceramic-coated aluminum shafting. LM76 also offers several FDA/USDA compliant linear bearings and slides for the food processing, pharmaceutical, medical, and packaging industries.

For additional information contact Mike Quinn at: LM76, 140 Industrial Dr., E. Longmeadow, MA 01028; Telephone: 413-525-4166, Fax: 413-525-3735 or E-Mail: or visit the website at

And say, “I saw it on, “The Motion Control Home Page.”

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