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Glossary of Terms, S-Z (en)

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Sectional Weave: A fabric consisting of alternating sections of right and left conventional weave usually joined by means of straight or crimped wires.

Shingle Style Guard Edge: A retaining edge consisting of overlapping flat plates which have one edge of the plate on the outside of the preceding plate, and the other edge on the inside.

Side Travel: The continuous movement of a belt in a direction either right or left of the centerline of the conveyor. (Also see Waver)

Small Radius Omni-Grid (3/4" & 1" ): Belt consists of an assembly of rods and links. A center row of heavy duty non-collapsing links forms two product lanes; for 3/4" pitch - standard links on inside and outside belt edges; for 1" pitch - standard collapsing links on inside edge with 1.75" (44.5mm) pitch collapsing links on the outside edge. All belts are double welded.

Space Saver Omni-Grid (3/4" & 1" ): Belt consists of an assembly of rods and links. A dual row of heavy duty, non-collapsing links is used on the inside edge, a long pitch expanding link is used on the outside edge.

Sprockets: Manufacturers supply sprockets for positive drive. These sprockets are generally cast from carbon or stainless steel, and are finished in sizes suitable for application.

Staggered Style Guard Edges: A retaining edge consisting of alternating overlapped inside and outside flat plates.

Stress Corrosion Cracking: The fracture of a metal in a corrosive environment. Austenitic stainless steel belts are susceptible to a phenomenon known as "Stress Corrosion Cracking" under certain conditions.

Strip Sizes: Strip sizes for flat wire and Omniflex are generally supplied in dimensions within the accepted tolerances of flat wire manufacturers. Strip sizes also designates the height and thickness of a flat wire strip.

Surge: This term is applied to describe a loping or jerky operation of the belt due to too much overdrive, varying coefficients of friction of belt supports and drive problems.

Swing Wide: A term denoting the occasional tendency of the belt to swing outward in an area, prior to, or on leaving a turn, or the drum.

Tack Weld: This process prevents picket compression or narrowing associated with high belt tension typically associated with flat wire belts 60" (1524 mm) or greater.

Take-Up: The area of the system where variations in belt length are accommodated or "taken up".

Take-Up Drive: A name often given to the system sprocket drive. This drive sets the belt speed and dwell time for the system, and is located just before the take-up.

Take-Up Tower: The structure or area where the take-up, take-up drive, limit switches and dancer roll are located in a spiral.

Tensile Stress: This can result from the fabrication of the material or applied stresses to the material in operation. This would most commonly be caused from high tension in the system.

Tension Drive: Another name for the Take-Up Drive or Auxiliary Drive.

Tension Switches: Switches that are installed to sound an alarm or stop the system if the position of the take-up roll goes too high or too low. Limit switches can detect high tension and prevent some jam-ups.

Tier: A 360° element of the spiral, either ascending or descending one level.

Tier Height: The vertical distance from one belt level on the drum to the next higher or lower level. This is a measurement of distance.

Tier Spacing: Another term for Tier Height.

Trigger Lock: Flexible clip molded into the ends of plastic modules to secure rod position.

Truer Tracking: The unique profile off the TruSeat Lehr provides the most accurate seating possible and thus provides optimal belt tracking.

TruSeat Mesh: A balanced weave wire mesh fabric consisting of alternating right and left hand flattened spirals fully seated into specially formed crimped connector rods - commonly used in baking or glass processing systems.

Tungsten Mesh: Conventional weave wire mesh fabric consisting of only left hand spirals, wound one into the next so as to form a continuous fabric. Special material allows for use in temperature up to 3632°F (2000°C).

Turn Ratio: The ratio of inside turn radius to the belt width.

Turned-up Fabric: A retaining edge formed by turning up a portion of the belt at a prescribed angle to the carrying surface.

Turning Radius: The radius around which a belt may be flexed. It is commonly referred to as inside turning radius and is established by the nesting of links or pickets at the inside edge of the turn and by the belt width.

Uni-Directional Weave: A conventional weave fabric in which all spirals are of the same weave - either right or left. Also known as one-directional weave.

Up Cage: A spiral system where the belt's travel is from bottom to top.

Waver: The inherent deviation from a straight line along the fabric edges. (Also see Side Travel)

Wear Edges: An additional feature extended beyond the edge of the belt to act as a buffer.

Welded Edge: An edge finish on a woven belt completed by welding only.

Welded Knuckled Edge: An edge finish which is knuckled, and the knuckles completely filled by welding or brazing.