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Choose the Best Precision Shafting and Linear Bearings With This Selection Guide From LM76!

Linear Motion - Shafting and Linear Bearing Selection Chart!
LM76

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E. Longmeadow, MA – -- 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 acceptable.

When using a 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.r weight and the ability to run wiring, cooling lines or sensor cables through the extrusion (except WSP 1 size)

To you help select the best shafting and bearings for your application review carefully the "Selection Guide" below:

RC60 1060 Steel Linear Shafting

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.

Linear Motion - Whisper-Linear TM Slides from LM76!











Chrome Plated 1060 Steel Linear Shafting Shafting

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%.

Linear Motion - Whisper-Linear TM Slides from LM76!











440C Stainless Linear Shafting

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.

Linear Motion - Whisper-Linear TM Slides from LM76!











300 Series StainlessLinear Shafting 303, 304, 316

Austenitic 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.

Linear Motion - Whisper-Linear TM Slides from LM76!











Ceramic Coated Aluminum Shafting

Ceramic 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.

Linear Motion - Whisper-Linear TM Slides from LM76!











Nitronic 50 Linear Shafting

Features: Nitronic 50 Stainless Steel is an austenitic stainless steel with a blend of strength and corrosion resistance that is better than Stainless Steel 316, 316L, 317 and 317L. In fact, Nitronic 50 has about double the yield strength at room temperature compared to Stainless Steel 316/316L and 317/317L. Additionally, Nitronic 50 Stainless Steel has good mechanical properties at elevated and sub-zero temperatures. Another characteristic of Nitronic 50 is that it does not become magnetic even when severely cold worked - unlike many other austenitic stainless steels. Another advantage of using Nitronic 50 Stainless Steel is its outstanding corrosion resistance in harsh environments, especially in marine applications. As noted previously, Nitronic 50 is much stronger than Stainless Steel 316/316L and 317/317L; however, the same fabrication equipment and procedures used for the Stainless Steel 300 grades can be utilized for Nitronic 50. In addition, the same cooling techniques used for Stainless Steel 316/316L and 317/317L can be utilized for Nitronic 50.

Linear Motion - Whisper-Linear TM Slides from LM76!











Protective Coatings

Added 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.

Linear Motion - Whisper-Linear TM Slides from LM76!











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: mquinn@lm76.com

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 Teflon® 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: mquinn@lm76.com or visit the website at http://www.lm76.com

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