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This glossary provides definitions for terms used to describe the hardware, software, systems, procedures, and other aspects of the materials handling industry relative to PUMA products. The glossary will be revised on a continuing basis with refinements and additions of new terms. The PUMA seeks your assistance in keeping the glossary up-to-date and hopes that you will forward comments and additional definitions.

ADDRESS :

An identification given to a specific location within a facility to which flow of material can be directed

AISLE, CLEAR :

The dimension in a storage aisle, from rack to rack, subtracting any pallet or load overhang. Also, see pallet and load overhang.

ALTERNATING CURRENT (AC) :

Where the positive and negative polarity alternate. The alternating period is called a cycle. In the U.S. and Canada, the average is 60 cycles per minute; overseas, 50 cycles per minute is common.

AMPERE HOUR (AH) CAPACITY :

Refers to the volume of electricity that can be drawn from a battery, and is dependent on the number or the size of the plates within the individual battery cells.

ATTACHMENT :

A device other than conventional forks or load backrest on the elevating mechanism of a truck used for handling a load. Popular types are fork extensions, clamps, rotating devices, load stabilizers.

BATTERY COMPARTMENT :

The space in which the battery is housed and secured.

BATTERY CONNECTOR :

A device used for connection of battery to truck or charger, composed of either male and female halves or two halves that differ only in method of mounting and polarity.

BATTERY ROLLER :

Those rollers located in bottom of battery compartment and battery stands to facilitate easy battery installation and removal.

BINS :

An enclosed space. Storage totes, storage areas, storage slots or storage containers as defined by physical parameters. Also a synonym for Carousel “carrier”.

CANTILEVER RACK :

A rack system with arms cantilevered off a vertical column and loads placed either directly on the arms or on shelves supported by them. Used extensively in steel, lumber and furniture warehousing, having the advantage of long unobstructed shelves with no uprights to restrict storage.

CAPACITY :

A truck's load capacity at a specified load center, stated in pounds at a specific fork height

CARRIAGE :

A support structure for forks or attachments, generally roller mounted, which travels vertically within the mast of a fork truck

CENTER OF GRAVITY (CG) :

The point at which the load mass is concentrated.

CHARGING :

The process whereby a battery is returned, electrochemically, to its maximum ability to deliver current. This is accomplished via connecting the battery to an appropriately-sized charger.

CLEAR STACKING HEIGHT :


Vertical space available for storing product.

COUNTERBALANCE TRUCK :

A truck equipped to lift and transport the load in front of the load wheels.

DEADMAN BRAKE :

A brake that remains engaged until it is intentionally released by the truck's operator

DIRECT CURRENT (DC) :

Where the positive and negative polarity remains in the same relative position (does not reverse). This is characteristic of current delivered by batteries.

DRIVE WHEEL :

The wheel that furnishes the tractive force to move the truck.

EXTENDED HEIGHT (EX. HT.) :

The vertical distance from the floor to the top of the uppermost structure of the truck (mast, carriage, load handler) in the maximum height position.

FORK EXTENSIONS :

A fork attachment that increases the load-carrying surface of the forks

FORKS :

Horizontal tine-like projections normally suspended from the carriage, for engaging and supporting loads.

FREE LIFT (FL) :

The attainable lift from the extreme lowered position of the carriage before the stated overall collapsed height of the mast is exceeded by any standard part of the forks, mast or carriage assemblies. (See also Nominal Free Lift and Full Free Lift.)

 
 

GRADABILITY :

The percent (%) of grade that a truck can ascend or descend.

HORIZONTAL TRANSPORT :

A category of industrial truck designed to effectively transport material in the horizontal direction.

HYDROMETER :

A device used to measure density or specific gravity of the sulfuric acid-water electrolyte solution.

LIFT SPEED :

The average velocity in metert-per-minute when raising the load carriage throughout its operating range specified for empty and loaded conditions.

LOAD BACKREST :

The portion of the carriage and forks which supports the load when it is tilted rearward, upward or elevated.

LOAD CENTER, HORIZONTAL (LC) :

The horizontal distance from the intersection of the fork face and fork heel (or equivalent load positioning structure) to the center of gravity of the load.

LOAD CENTER, VERTICAL :

The vertical distance from the carrying surface of the fork (or equivalent load carrying structure) to the center of gravity of the load.

LOAD OVERHANG :

The portion of the load which projects beyond the front, back or sides of the pallet, skid and/or load beam (See also Pallet Overhang.)

LOAD WHEEL :

As pertaining to reach and straddle trucks, those wheels that are located in the baselegs.

LOWERED HEIGHT (LH) :

The vertical dimension to the top surface of the forks when the carriage is at its lowest position, but not dragging on the floor.

LOWERING SPEED :

The average velocity in FPM when lowering the load carriage throughout its operating range, as specified for empty and loaded conditions.

MAST :

The support member that provides a structure to permit vertical movement of the carriage. It is usually constructed out of C-Channel uprights that provide the supporting pathway for the carriage rollers.

ORDER PICKER :

A person or equipment assigned the function of selecting material required for orders from storage.

OVERALL LENGTH (OAL) :

Length of fork truck extremities measured in direction of fork length.

OVERALL WIDTH (OAW) :

Width of fork truck extremities measured in direction of fork width.

OVERHEAD GUARD (OHG) :

A framework fitted to a truck over the head of the operator's envelope.

PALLET :

A load supporting structure usually built with wooden front-to-back stringers and top and bottom decks with openings that allow pick up and transportation by a fork truck. Pallet specifications should be stated as length (stringer) x width.

PLATFORM TRUCK (P) :

A (High-Lift or Low-Lift) truck with a load handling platform designed to pick up and deposit a customer's particular type of skid.

TOW TRACTOR :

A powered industrial truck designed primarily to draw one or more trailers or other mobile loads.

TURNING RADIUS (OUTSIDE) :

Half the diameter of the largest circle described by the outermost projection of a truck when driving slowly with the steering mechanism at the optimum steering angle.

UNDER CLEARANCE :

The distance, in inches, from floor to the underside of the truck.

VOLTAGE :

A measure of battery potential, stated in volts.

WALKIE :

A category of (Low-Lift and High-Lift) trucks controlled by a walking operator.

 
       
 
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