Alternate Piston Rod Materials

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Hardened Piston Rod Material

Chrome plated piston rod material with a minimum case hardness of Rc-50 is available in all sizes. This option pro- vides added resistance to damage resulting from foreign elements contacting the rod surface.
Hardened rod stock and standard rod stock have similar strength properties, however hardened material has increased brittleness which makes its use in applications subject to misalignment or high stress loading undesirable.

METALLIC ROD SCRAPER

Cylinders for use in areas containing abrasive particles or self adhering contaminants that could become embedded in the standard wiper should be ordered with a metallic scraper. Twin knife like edges will clean rod surface to prevent such harmful contaminants from entering sensitive inner bearing and seal areas. Hardened Piston Rod option is recommended when a metallic scraper is included.

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Seal Design Modifications

Rod and piston seals are available in a variety of design configurations. While standard Lynair cylinders include seals proven to be satisfactory for general purpose use, alternate styles designed to provide specific performance characteristics are available when application require- ments make their use desirable. Seals that offer extended service life, greater sealing efficiency, lower friction, constructed of materials, or in sizes better suited to meet particular design requirements may be specified.

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A glass fiber filled teflon sealing ring installed over an elastomer expander provides a long wearing, bidirectional, low bypass piston seal suitable for air or hydraulic service.

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Wear rings of similar material are often used with this type of seal. Their use eliminates metal to metal contact between piston and bore surfaces which improves wear conditions and is especially effective when used in models having long stroke length.

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Seal construction options are an extra cost feature available upon request in all cylinders. Consult Lynair, Inc. to obtain design recommendations and price adders when this optional feature is being considered.