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Glossary of Terms, M-R

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Main Drive: The motor, reducer, and other power transmission devices that turn the cage or drum of a spiral system. Also known as the cage drive.

Mesh: Woven wire surface on which the product rests.

Mesh Designation (Flat Wire): Flat wire belts are constructed in specific mesh designations or opening sizes such as 1x1, 1/2x1, 1/2x1/2, with other modifications which may vary according to belt width.

Mesh Designation (Woven): Woven mesh is designated with a letter (B,C,U) and 3 numbers to describe mesh construction.

Mobius: Technique where return path is arranged to make the belt turn itself over each successive passes through the system.

Multi-Strand Weave: A fabric consisting of alternating right and left hand double spirals (side by side as single units) joined by straight connecting rods.

Nose Roll: Machined radius plate or roller, plastic or metal, located at the conveyor terminals which the belt wraps around, allowing a close transfer.

Offset Guard Edge: A retaining edge similar to the Shingle Type except having a formed vertical step in each place.

Omni-Grid: Turn curve belting consisting of an assembly of metal links and rods,capable of accommodating turns in a conveyor system. Wire mesh and plastic overlays are available to give greater product support. Omni-Grid belts can also be used in straight run applications.

Omni-Lite: Omni-Lite is a High Density Polyethylene (HDPE) plastic overlay attachment that can be used in place of wire mesh overlay on Ashworth 1" pitch Heavy Duty Omni-Grid belts.

Omni-Tough: The Omni-Tough overlay has a flat surface and is made from high tensile strength spring stainless steel wire with a high resilience to impact. Omni-Tough is available in most mesh configurations.

Opening: Clear space on the carrying surface of the fabric between wires.

Opening - Lateral: The nominal inside distance between parallel wires, measured along a line perpendicular to the angle of weave to the nearest intersecting wire whether in the same or adjacent spiral. (Compound Balance Weave does not fall within this definition.)

Opening - Longitudinal: The nominal inside distance along the angle of weave measured between the connectors of the spirals. (Compound Balance Weave does not fall within this definition.)

Out Run: Length of belt from the point tangent to the cage or turn to discharge of the product. Also known as out feed.

Overdrive: The amount of slippage between the belt and the drum or cage, in a spiral system.

Picket: A continuous corrugation of that flat strip with pre-positioned holes. (Applicable to flat wire belts).

Prestoflex: Prestoflex plastic belting has a connectorless construction, made up of plastic modules, which snap or unsnap together for quick and uncomplicated repairs.

Plastic Modular Belt: Plastic modules assembled with adjacent modules using a round stainless rod or plastic rod inserted through the modules.

Radius Weight: This is a simplified formula for estimating the belt tension while in contact with the drum in a spiral system. It is another term used to describe the system tension.

Reduced Radius Omni-Grid: Smallest turn radius available with no center link assembled into the belt.

Reinforcing Rod: A rod of any shape (usually round) inserted through the bends of the spirals for the purpose of strengthening the fabric, and which does not join spirals or serve as a connector.

Relieved and Reinforced Turned-up Fabric: A retaining edge similar to a relieved turned-up fabric except that hair-pin reinforcements are inserted in the disconnected spirals.

Relieved Turned-up Fabric: A retaining edge similar to a turned-up fabric edge providing flexibility by the omission of connectors or rod reinforcements in the turned up portion of the mesh at prescribed spacing.

Return Path: The path the belt takes in moving from the discharge back to the infeed.

Rod Lock (Modular Belting): Extended rod cap, about 1-1/2 inches (38 mm) long, inserted into the module along both edges of the belt to secure rod position. The rod snaps into a notch in the outermost knuckle of the module.

Rod Looped Edge: An edge finish similar to the ladder edge except that reinforcing wires or connectors are extended and knuckled on themselves.

Round Wire Sizes: Round wire sizes generally referred to are the nearest American Steel and Wire or W & M gauge number with its decimal equivalent and are supplied within the standard wire tolerances of wire manufacturers.

Rod Reinforced Weave: Fabric constructed in the same manner as Conventional Weave, and reinforced by insertion of a rod through the hinging point of the spirals.