Glossary


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1) Gage

A standard measure for sheet steel thickness or wire diameter.

2) Gantry crane

A crane similar to an overhead crane except that the bridge for carrying the trolley or trolleys (with lifting device) is rigidly supported on two or more legs running on fixed rails or other runway.

3) Gear motor

A commonly used term that designates a hoist that derives its lifting and lowering power from a mechanical setup involving a gear set and pneumatic or electric motor.

4) General purpose pallet

A pallet that is designed and constructed for general use and is returnable. This pallet is generally double-decked in its construction.

5) GMA pallet

GMA-Grocery Manufacturers of America A pallet whose dimensions are  48"x40", is made of hardwood, and is forkliftable from all four sides.  Manufactured to GMA requirements.

6) Gondola shelving

A floor mounted shelving system utilizing cantilevered shelves extending from one or both sides of a rigid vertical back. This form of shelving is common in retail establishments due to its ease of movement and reconfiguration.

7) Grab-a-block pallet

A pallet used in distribution operations wherein the center stringer or block is grabbed by a center clamp to steady the pallet enabling goods to be stacked on it at an elevated height.  These types of pallets may be made of wood or plastic.

8) Gravity conveyor

Conveyor on which materials are moved by gravity or by a person, as opposed to a conveyor on which materials are moved with powered belts or rollers.

9) Gravity roller conveyor

A conveyor which supports the load on a series of rollers with internal ball bearing rings mounted on axles at fixed intervals in a frame. Roller conveyors come in straight sections, curved sections and in various spur and merge sections.

10) Gravity wheel conveyor

Ideal for light duty handling requirements where the load is flat and smooth, gravity wheel conveyors support the load on a series of skate wheels mounted on a shaft in a frame. The conveyor sections can be either rigid (straight or curved) or flexible. In the latter case, the frame is actually an accordion frame capable of being expanded or curved, making it ideal for temporary applications such as the loading and unloading of over-the-road trucks.

11) Gusset

An element added for additional stiffness.

12) Hand trolley

A trolley or carrier, generally suspended from a monorail or crane bridge, that is capable or designed to be propelled manually.  A push-pull trolley.

13) Hand truck

Refers to a type of fork truck that is powered but does not carry an operator. Often referred to as a walk behind fork truck.

14) HDPE

High Density Polyethylene

15) Helix

A spiral-wound wire used as a hinge or attaching device.