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Air Film Rolls

Air Film Rolls
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mott corporation 84 Spring Lane, Farmington, CT 06032-3159

Mott Precision Air Film Rolls Features and Benefits Manufactured to close tolerances: • • • High-quality surface finish of 32 micro inch or better Concentricity of 0.005” TIR or better Uniform porosity ±10% maximum along length of roll Durable construction to withstand industrial use: An Air Film Roll is a component of a web-conveying system which is specifically designed to guide the web stock on a cushion of air during transport. By suspending the web stock on a cushion of air, Mott Air Film Rolls eliminate transport friction, streaks and other disturbances of web coatings caused by...

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Glossary and Operation Notes Web: Impermeable* surface-sensitive sheet material being transported. Porous Metal: Mott precision-sintered metal to produce uniform air flow through the roll, and create a stiff boundary layer for precise support of the web. Wrap Angle: Defined as the angle of the web being supported by the air film from the entrance tangent to the exit tangent. Minimum wrap angle recommended for effective operation is 30°. Active Surface Angle: Normally, the wrap angle plus 20°, (plus 10° on both entrance and exit tangents). Or the entire surface of the roll may be open. Mask:...

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Application Notes TANGENT SUPPORT DOES NOT WORK TURNING BAR TO CHANGE WEB DIRECTION (USE THREE TO FLIP WEB TO OPPOSITE SIDE) RECOMMENDED MINIMUM Mounting Mott Air Rolls Mott Precision Air Film Rolls are available in several mounting configurations to meet a wide variety of application requirements. , SPLIT MOUNTING BLOCK SPLIT MOUNTING BLOCKS STRADDLE MOUNTING NOTE: Air film rolls are fixed, non-rotating Following are some suggested mounting methods that may be used. ■ Squared ends and counterbored ends - can be used for custom mounting needs. ■ Tapped ends on plain air rolls - for use with...

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Squared Ends mott corporation

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Straight Air Roll Assemblies Example: 3140-48 - Straight air roll assembly. 4" (3.875) diameter, 48" long, with journaled ends. mott corporation

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Truss-Supported Air Roll Assemblies Example: 3220T-72 - Truss-supported air roll assembly. 2" diameter. 72" long, with tapped journaled ends. Cantilever Air Roll Assemblies Example: S3330T-18 - Cantilever air roll assembly. 3'diameter. 18' long, tapped journal end, special How. Tapped End Air Roll Assemblies (>36" Long) Example: 342M8 Tapped end plain air roll, 2" diameter. 48' long mott corporation

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Mott Precision Porous Vacuum Rolls Mott Corporation supplies precision Vacuum Drive or Pull Rolls for conveying critical surface- sensitive webs. Mott Vacuum Rolls eliminate the need for "nip rolls" that can disturb the sensitive coatings on products such as computer, audio. or video tape, adhesive tapes and printed webs. Vacuum Rolls are "driven" rolls. Vacuum Rolls feature Mott Duplex Porous Media. which is used to provide rapid response time for optimum performance. The duplex media consists of an outer layer of fine porous material over a backup layer of coarse porous media, which...

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