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Your Guide to Hytrol Terminology – Part 5

An advanced company founded in 1947, Hytrol has pledged to provide the best material handling solutions to their many customers since day one. S&H Systems is proud to be a partner of Hytrol; they offer outstanding technology and services in order to achieve success for our clients. Since our team uses Hytrol products on a frequent basis, we make sure all our employees are proficient in Hytrol terminology. Take a look at this next segment of our Hytrol terminology blog series to add some new terms to your vocabulary.

Part 5 of Common Hytrol Terminology: N-P

Negative Crowned Pulley – A pulley with raised areas set equally in from each end. This crown is used on tail pulleys 24 in. OAW and wider and aids in belt tracking.

Net Lift – The net vertical distance through which material is moved against gravity by a conveyor.

Nip Point Guard – A guard placed to eliminate points or areas on the conveyor where injuries might occur.

Nose Roller – A small roller, used on power belt curve conveyors, to reduce the gap at the transfer points.

Nose Over – A section of the conveyor with transition rollers placed in conveyor to provide a transition from incline to horizontal or horizontal to incline.

O-Ring – Polyurethane bands used to transmit drive power from roller to roller or spool to roller. (138-NSP, 190-NSP, E24, 138-NSPEZ, 190-NSPEZ)

Overall Length (OAL) – The dimension to the outside of pulley including belting or lagging, of any conveyor lengthwise.

Overall Width (OAW) – The dimension outside to outside of frame rails.

Overhead Drive – A drive assembly mounted over a conveyor which allows clearance for the product.

Package Stop – Any of various devices, either manual or mechanical, used to stop flow on a conveyor.

Parts Conveyor – A conveyor used to catch and transport small parts, stampings, or scrap away from production machinery to hoppers, drums, or other operations. (PC, PCA, PCX, PCH)

Photo Cell – An electrical device used to sense product location.

Pivot Plate – The gusset which attaches the conveyor to the support leg.

Plastisol Coating – Poly-vinyl chloride (PVC) covering for roller tubes to prevent product damage or marking. Usually (#70 durometer) green or (#90 durometer) red in color.

Plow – A device positioned across the path of a conveyor at the correct angle to discharge or deflect objects.

Poly-Tier – Supporting members capable of supporting more than one level of the conveyor at a time. Each tier has a vertical adjustment for leveling the conveyor.

Pop-Out Roller – A roller, normally placed on the ends of a belt conveyor, used to aid in the transfer and set in a wide groove to allow it to eject if an object comes between it and the belt.

Portable Conveyor – Any type of transportable conveyor, usually having supports which provide mobility.

Portable Support – Supporting members which provide conveyor mobility by use of casters or wheels.

Positive Crowned Pulley – A pulley which tapers equally from both ends toward the center, the diameter being the greatest at the center. The crown aids in belt tracking.

Power Belt Curve – A curve conveyor which utilizes a belt, driven by tapered pulleys.

Power Conveyor – Any type of conveyor which requires power to move its load.

Powered Feeder – A driven length of belt conveyor, normally used to move product horizontally onto an incline conveyor.

Prepaid – Freight moves prepaid

Pressure Roller – A roller used for holding the driving belt in contact with the load carrying rollers in a belt driven live roller conveyor.

Product Footprint – The surface of the product that comes in contact with the belt, rollers, or wheels of the conveyor.

Pulley – A wheel, usually cylindrical, but polygonal in cross-section with its center bored for mounting on a shaft.

Push Button Station – An electrical device which operates a magnetic starter.

Pusher – A device, normally air powered, for diverting product 90° from one conveyor line to another line, chute, etc.

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