// AUTOQUIP - Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
ATF
Automatic transmission fluid
Access Plate
Removable or hinged plate in platform surface which allows access to power unit and hydraulics when lift is in the down position.
Accordion Skirt
A flexible protective skirt that extends approximately 3” out from a minimum-sized lift platform to conceal the base and internal components of the lift and is often used to prevent inadvertent contact with the scissors mechanism by the operator and/or to keep debris out from under the lift. It is typically made from 23-ounce vinyl reinforced with polyester. However, it is not an acceptable form of toe protection according to ANSI MH29.1.
Actuator
Actuator is a device for converting hydraulic, electric, or pneumatic energy into mechanical energy.
Air Bag Actuation
Inflatable air bag provides travel. Use when electric power is not available and/or desirable or hydraulic is not acceptable.
Air/Hydraulic
A system where the primary power is air, which runs the pumps, which sends hydraulic fluid to the cylinders. An air powered hydraulic actuator system.
Ampere
The ampere is the unit of measure for the rate of flow of electric current.
Anchors
Hardware used for Fastening Equipment to Floor or Walls.
Anti-Skid Surface
Diamond tread or abrasive material applied to lift platform.
Approach Ramp
Hinged or fixed plate with structural support from floor level to top of lift platform for loading and unloading.
Audible Signal
Alarm or signal used to alert personnel of equipment starting or moving.
Automatic Indexing
Optical or mechanical sensing to position platform at preset height(s).
Autotrol Valve
A control valve which is proprietary to Autoquip, contains check valve, down valve, Flow control, pressure relief, oil filtration, and pressure regulator.
Authorized Person
Trained or qualified personnel approved or assigned to perform a specific duty or duties.
Auxiliary Contact
Electrical contact used as another switching device on Contactor.
Axle Load
Axle load is a dynamic (moving) load which is applied to the loading edge of the lift platform. An example is a truck or fork truck rolling onto a lift.
Back Frame
The vertical portions of the carriage on cantilever Freightlift.
Back Stop
A back stop panel is installed opposite the loading edge of a VRC platform to prevent a load from falling to the lower level.
Baffle
A device, usually a plate, installed in a reservoir to separate the pump inlet from
return lines.
Ball Screw
Rotary to linear motion conversion device, usually electric.
Ball Transfer Surface
Ball type conveyors built into platform, either fixed or retractable.
Base Frame Build Up
Increases lowered height and provides under-clearance.
Bearing
A load support that provides for relative motion between the load and the support.
Bearing Load
The load supporting machine element.
Beveled Toe Guards
According to ANSI MH29-1, “A toe guard plate not less than 8 inches (20.3 cm) in width shall be provided on all unprotected sides as a physical alert. It shall be made of steel, not less than No. 11 gauge (3 mm) in thickness, or other material of equal rigidity, attached flush with the vertical edge of the platform, and slanted inwardly at an angle of approximately 30 degrees from vertical.”
Bleed-Off
To divert a specific controllable portion of pump flow directly back to reservoir.
BOM
Bill of Materials for a job or part. The list of all components used for a specific
assembly.
Breather
A device, which permits air to move in and out of a reservoir or component to maintain atmospheric pressure. (Prevents a vacuum)
Break Over (Bridge / Ramp)
A device hinged to a lift platform which can be raised or broken over when the
platform is being raised or lowered.
Bushing
A metal lining for reducing friction on moving parts.
By-Pass
A secondary passage for fluid flow.
Cable
Wire rope
Cable Reaving
The routing of the wire rope on a Freightlift.
Cam Follower
A wheel or roller used to carry the capacity of a lift or turntable on a surface.
Cantilever
A style of Vertical Reciprocating Conveyor where the carriage rides along two masts that are mounted on the same side of the carriage. This style lift will accommodate all three loading patterns.
Capacity
The maximum load the Lift can lift.
Carriage
The entire assembly that travels in the mast and carries the load.
Cartridge
1. The replaceable element of a fluid filter.
2. The pumping unit from a vane pump, composed of the rotor, ring, vanes and one or both side plates.
Casters
Fixed or swivel, can be positioned in a variety of configurations for portability and transportability.
Center of Gravity
Location thru which the entire mass of an object can be resolved.
Check Valve
A valve, which permits flow of fluid in one direction only.
Circuit
An arrangement of components interconnected to perform a specific controlling function within a system.
Clevis
A structural-mounting device used in scissors lifts (used in attaching platform to legs and legs to base.
Compressibility
The change in volume of a unit volume of a fluid when it is subjected to a unit change in pressure.
Contactor
Electrical device that is specifically sized for a Motor.
Continuous Running Motor
A motor which remains running even when the lift is not in use.
Continuous Duty
The motor is rated to run continuous, although it may also be used intermittently.
Controls
Any electrical device used in the operation of a Lift normally includes push button stations, control box, limit switches, interlocks, etc.
Controls by Others (CBO)
Controller and Control signaling device (Push-button, Footswitch, etc.) are supplied by others.
Control Signaling By Others (CSBO)
The controller is supplied by Autoquip, but the control signaling device, (push-button, footswitch, etc.) is supplied by others.
Controlled Issue
A drawing that is released to Manufacturing for them to keep and release to shop floor as needed.
Controller
The assembly of electrical components which transforms primary voltage to secondary voltage and controls the functions of the motor and the control valves.
Control Transformer
An electrical component which alters (reduces) the primary voltage.
Control Voltage
The secondary voltage, which comes from the transformer to the push-button.
Controls - Constant Pressure
A pushbutton control of travel which when finger is removed from button, travel stops.
Controls – Press and Release
Push button control which can be pushed to activate and released, travel ceases automatically at preset level.
Conveyor, Vertical Reciprocating
Vertical Reciprocating Conveyors, VRC, Material Lifts, or Freight lift provide the most economical, dependable, and safe method of high capacity freight movement between multiple levels with the smallest platform size or footprint possible. An economical alternative to expensive freight elevators or fork trucks, Autoquip VRC Material Lifts can be customized to improve freight and goods transfer and storage in any application: industrial mezzanines, retail stores, restaurants, warehouses, conveyor systems, and much more. Hydraulic designs are limited to travels of 28 feet of travel, where mechanical VRC lifts can travel up to 100 feet. Each Autoquip Freight lift is designed and manufactured to meet or exceed the requirements of ASME B20.1 – Safety Requirements for Conveyors and Related Equipment. VRC Family Page
Counterbalance Valve
A pressure control valve which maintains back pressure to prevent a load from falling.
Cycle
A cycle is a period of time between motor starts.
Cylinder
A device, which converts fluid power into linear force and motion. It usually consists of a movable element such as a piston and piston rod, plunger or ram, operating within a cylindrical bore.
Cylinder, Double Acting
A cylinder in which fluid force can be applied to the movable element in either direction, typically used when application requires control of both up and down action.
Cylinder, Direct Acting
The cylinder or ram transmits lifting force directly to the carriage rather than through the use of cables, sheaves or chains.
Cylinder, Ram
A cylinder in which the movable element has the same cross sectional area as the piston rod.
Cylinder, Single Acting
A cylinder in which the fluid force can be applied to the movable element in only one direction.
Cylinder, Single Rod
A cylinder with a piston rod extending from only one end.
Directional Valve
A valve, which selectively directs or prevents fluid flow to desired channels.
Displacement
The quantity of fluid which can pass through a pump, motor or cylinder in a single revolution or stroke.
Direct acting cylinder
The cylinder or ram transmits lifting force directly to the carriage rather than through the use of cables, sheaves or chains.
Dock Lift
Dock Lifts are used for moving wheeled or palletized loads onto or from delivery trucks of various heights onto or from your dock or grade level. Regardless of lift design, each Autoquip dock lift shares common features that are required for rugged, outdoor use – anti-skid deck plate, beveled toe-guard protection, and extra structural steel support to withstand impact loading, concentrated wheel loading, off-centered loading, and high rollover loads when lowered in to a recessed pit. Most dock lifts are permanently installed in concrete pits, but some scissors-style lifts are portable for use with multiple dock positions, truck delivery areas that have no elevated dock, or where recessed pits are not feasible. Dock Family Page
Down solenoid
An electrical mechanical device that, when electrically energized, opens the down valve.
Drift
The distance a lift platform will slowly drop due, usually to slight leaks of the hydraulic fluid or inability of a brake to hold a motor.
Drop Bar
A bar that prevents loads from rolling off the platform.
Duty Cycle
The rating of an electrical motor or component.
DU Bushing
A pre-finished, high performance, bearing used in the pivot points of a scissors lift. (Lead Impregnated Teflon with steel backing)
Dump Valve
A valve used to divert hydraulic flow directly to tank.
Dual Tap Transformer
Provides (2) different secondary voltages from the same device.
Dust Tight
Is design to prevent any dust from entering the device.
Edge Load
Static load (not raised or lowered) that is placed directly on or near the edges of a lift platform. An edge load is important because a lift can deflect excessively if a load exceeds the lifts recommended edge load capacity. It may result in permanent damage to the lift.
Edge Load Capacity
The maximum amount of static load that can be applied to the edge of the platform when the lift is in any raised position.
Electric Toe Guard
A device mounted below the platform such that when an obstruction is met during descent, the lift will be brought to rest before entrapment can occur, whether the lift is loaded or empty.
Electric/Hydraulic
A system which primary power is electric, which runs (pumps) hydraulic fluid to the cylinders.
Enclosure
Structure surrounding a lift to prevent anything from interfering with normal operation and to safe guard personnel. Typically 8’ high panels made of expanded metal that will prevent a 2” diameter ball from passing through. This is a requirement of the conveyor code. (ANSI-B20.1)
End Axle Load Capacity
The maximum amount of single axle load (in the case of rolling loads) which may be applied to the loading edge of the platform end when the lift is in its raised position.
Ergonomic
The applied science of workplace equipment design, intended to maximize productivity by reducing operator fatigue, discomfort, and wasted motion.
Explosion Proof
Electrical Devices that are designed for a specific location or area where certain Hazardous condition may or can exist.
Filter
A device through which fluid is passed to separate matter held in suspension. A device whose primary function is the retention by a porous media of insoluble contaminants from a fluid.
Flanged Wheels
For use with flat or rail type track to provide fixed path lateral movement.
Flow Control Valve
A valve, which controls the rate of oil flow.
Flow Rate
The volume of a fluid passing through the circuit per unit of time, usually gallons per minute.
Flush Mount Push-Button
Push- Button that mounts in the wall, which allows only the cover plate and push-button to be visible.
Fork Pockets
Allow unit to be readily moved by fork truck.
F.O.B.
Point where freight begins and where shipping charges begin.
Garmax Bushing
A proprietary filled PTFE liner, which is securely bonded to the epoxy- glass filament, wound composite backing.
Gate
A device that opens and closes to allow access to the carriage for loading and unloading. Normally a swing, sliding, or vertical acting device constructed of similar expanded metal as the enclosure.
Gib
Device used to contain roller pin or roller.
GPM
Gallons per minute
Guarded by Location
Describes moving parts so protected by their remoteness from the floor, platform, walkway, or other working level, or by their location with reference to frame, foundation, or structure as to reduce the foreseeable risk of accidental contact by persons or objects. Remoteness from foreseeable, regular, or frequent presence of public or employed personnel may in reasonable circumstances constitute guarding by location.
Guide Angle to Guide Angle
Dimension given to set the mast on a Freightlift.
Handrails and Snap Chain
For use when personnel must be raised or lowered. Removable rails allow access from all sides when lift is not in use. Rails are 48” high.
Hazardous Duty
Usually a location which requires special electrical components.
High Cycle
A requirement for continuous cycling of the lift and power unit.
High Speed
Faster than standard engineered speeds.
Hinged Bridge
A hinged transition plate, which is attached to the edge of the platform and landing and/or truck bed.
Horsepower (HP)
The power required to lift 550 pounds one foot in one second or 33,000 pounds one foot a minute. A horsepower is equal to 745.7 watts or to 42.4 British Thermal Units per minute.
Horizontal Sliding Gate
A gate that operates horizontal to the floor.
Hydraulic
Operation by movement and force of liquid.
Interlock
An electrical mechanical system for doors or gates to prevent operation of the lift if all gates are not closed or if the lift platform is not present at that level.
Intermediate Stop
Usually a stop between Top and Bottom floors, or travel of the platform.
Intermittent Duty
Motor is rated to run only part time. (2 min. run time and 2 min. rest time.)
Kilowatt
Power is the rate of doing work.
Landing
A permanent-working surface at a fixed elevation used for loading/unloading a lifting device.
Lift Table
A raising/lowering device supported or stabilized by crossing members. Scissors lifts provide the most stable, dependable, and versatile method of lifting heavy loads. Because of their simplicity & few moving parts, maintenance-free bushings, and wide acceptance by customers – scissors tables provide many years of trouble free operation for relatively small capital investment. Scissors lift mechanisms are easily modified by narrowing, widening, combining or stacking to achieve an extremely wide array of configurations to effectively move loads of virtually any size and/or capacity to heights of 20 feet or more. Hydraulic scissor lifts are the most popular, versatile, and economical of all actuation styles, but completely pneumatic or mechanical scissors tables are also available – depending on the demands of the application. Autoquip scissor lifts are designed and manufactured to meet the industry safety requirements set forth in ANSI MH29.1. Scissor Lift Page
Lifting Capacity
The rated load of a scissor lift applied as a uniformly distributed load.
Limit switch
An electrical device that stops travel and prevents over travel. It also provides height positioning and activates associated equipment.
Limited Travel
Travel is limited either with electrical device (limit switch) or mechanical device.
Linear Actuator
A device for converting hydraulic energy into linear motion - a cylinder or ram.
Load height
The maximum height of material a Platform can accommodate.
Load pattern
A method to describe the direction a load will be moved on and off a platform at different levels.
- • “Z” Load Pattern – The traffic flow is to load the lift from one side and exit the lift off the opposite side as it was loaded.
- • “C” Load Pattern – Traffic enters the lift on one side and exits the lift from the same side as the lift was loaded.
- • “90◦”Load Pattern – Traffic pattern requires a cantilever carriage to enter the lift from one side and exit the lift at a 90◦ angle from the loading position.
Lock Left
Standing outside the gate facing the gate, handle on the left, gate swings outward
Lock Right
Standing outside the gate, facing the gate, handle on the right, gate swings outward.
Manifold
A fluid conductor providing multiple connection ports.
Manual Control
A control actuated by the operator, regardless of the means of actuation. Example: Lever or foot pedal control for directional valves.
Manual Override
A means of manually actuating an automatically controlled device.
Mast(s)
The vertical members between which the carriage is guided throughout its vertical travel.
Maintained Contact
A contact, which is maintained either mechanically, or electrically.
Maintain Limit
Limit, which stays tripped in the direction of travel.
Mechanical stop
A mechanical means of stopping travel at a predetermined spot or to prevent over travel.
Momentary Contact Push-button
A push-button which only has to be pressed for an instant to obtain desired travel.
Motor
A device, which converts fluid or electricity into mechanical force and motion. It usually provides rotary mechanical motion.
Motor, Fixed Displacement
A motor in which the displacement per cycle cannot be varied.
Motor, Linear
A term sometimes used in reference to a cylinder.
Motor starter (Magnetic)
To control the starting of the motor and provide protection against electrical overloads. A device operated by control voltage to actuate or connect two high voltage contact points.
Mounted By Others
The mounting of components will be by someone other than Autoquip Personnel
NEMA Type 1 Enclosure
Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts and to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt).
NEMA Type 2 Enclosure
Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).
NEMA Type 3 Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 3R Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 3S Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and for which the external mechanism(s) remain operable when ice laden.
NEMA Type 3X Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); that provides an additional level of protection against corrosion and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 3RX Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); that will be undamaged by the external formation of ice on the enclosure that provides an additional level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 3SX Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); that provides an additional level of protection against corrosion; and for which the external mechanism(s) remain operable when ice laden.
NEMA Type 4 Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 4X Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); that provides an additional level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 5 Enclosure
Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and settling airborne dust, lint, fibers, and flyings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).
NEMA Type 6 Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (hose directed water and the entry of water during occasional temporary submersion at a limited depth); and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 6P Enclosure
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (hose directed water and the entry of water during prolonged submersion at a limited depth); that provides an additional level of protection against corrosion and that will be undamaged by the external formation of ice on the enclosure.
NEMA Type 12 Enclosure
Enclosures constructed (without knockouts) for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and flyings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).
NEMA Type 12K Enclosure
Enclosures constructed (with knockouts) for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and flyings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).
NEMA Type 13 Enclosure
Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and flyings); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing); and to provide a degree of protection against the spraying, splashing, and seepage of oil and non-corrosive coolants.
Non-Operating End
The side(s) of the platform not used for loading/unloading. Handrails with midrail and kickplate are supplied as minimum safety protection.
ODP
Open Drip Proof (usually referred to on Electric motors)
Oil Tight
Is for a fitting or box that will not let oil enter into the system or device.
Operating end
The side(s) of the platform used for loading/unloading. A safety chain is supplied as minimum safety protection.
Operational Signals
Visual or audible alarms warn personnel when lift is in use.
Operator
Trained personnel who controls the movement of the lift.
Orifice
A restricted passageway in a fluid power system, usually a small hole drilled for the purpose of limiting the flow. A restriction, the length of which is small in respect to its cross-sectional dimensions.
Piston
A solid piston that fits into a larger cylinder and moves back and forth under fluid pressure. A cylindrically shaped part which fits within a cylinder and transmits or receives motion by means of a connecting rod.
Platform
The horizontal surface of the platform or carriage where the load is placed.
Platform Ends
The edges of the platform that are perpendicular to the scissors legs. The end dimension is considered the platform width.
Platform Sides
The edges of the platform that are parallel to the scissors legs. The side dimension is considered the platform length.
Plunger
A cylindrically shaped part, which has only one diameter and is used to transmit thrust.
Pneumatic
Of or relating to air or another gas.
Poppet
That part of certain valves which prevents flow when it closes against a seat.
Port
An internal or external terminus of a passage in a component.
Positive Displacement
A characteristic of a pump or motor, which has the inlet positively, sealed from the outlet so that fluid cannot re-circulate in the component.
Power
Work per unit of time, measured in horsepower (hp) or watts.
Power Pack
An integral power supply unit usually containing a pump, reservoir,
relief valve and directional control.
Power Unit
An assembly including, but not limited to the motor, pump, reservoir, and the Autotrol valve.
Pressure
Force per unit area, usually expressed in pounds per square inch (psi).
Pressure Line
The line carrying the fluid from the pump outlet to the pressurized port of the actuator.
Pressure relief valve
A valve that can be set to a predetermined pressure. If the pressure is exceeded the valve will open to prevent damage to hydraulic system. A pressure operated valve which by-passes pump delivery to the reservoir, limiting system pressure to a predetermined maximum value.
Pressure switch
A switch that can be set to a predetermined pressure. When this pressure is reached it will open thus turning off the control circuit and stopping the pump motor.
Pre-Wired
Means that all practical devices are wired to the control box either to terminal strip or to the device.
Primary Voltage
The main Power being supplied to the motor and the control box, (usually the high voltage on our products.)
Pump
A device, which causes a liquid to flow against a pressure. It converts mechanical force and motion into hydraulic fluid power.
Pump, Fixed Displacement
A pump in which the displacement per cycle cannot be varied.
Pump, Gear
A pump having two or more intermeshing gears or lobed members enclosed in a housing.
Pump, Vane
A pump having multiple radial vanes within a supporting rotor.
Pump, Variable Displacement
A pump in which the displacement per cycle can be varied.
Push-Button Station
The hand held or wall mounted device used to control the motion of the platform.
Qualified Person
A person, who, by possession of a recognized degree, certificate, professional standing, or skill, and who, by knowledge, training and experience, has demonstrated the ability to deal with problems relating to the subject matter, the work, or the project.
Quick Disconnect
Allows for quick disconnect of controls, air, or other lines. Used with portable or frequently relocated lifts. Not available for power supply line.
Rain Tight
Device designed to prevent rain from entering the device.
Raised Height
The total height, measured from the bottom of the base to the top of the platform when the lift is in a fully raised position.
Ram
A single-acting cylinder with a single diameter plunger rather than a piston and rod
Reference Dimension
Dimension used to measure from one location to the next.
Remote Power Unit
Power unit that will be mounted outside of the lift.
Reservoir
A tank that holds fluid (oil) for the hydraulic power unit. A container for storage of liquid in a fluid power system.
Restriction
A reduced cross-sectional area in a line or passage, which produces a pressure drop.
Return Line
A line used to carry exhaust fluid from the actuator back to the reservoir.
Rollover Capacity (load)
The maximum amount of single axle load, which may be rolled over the platform surface when the lift is in its fully closed position.
Roll Off Panel
Rollover is the amount of load being rolled over a lift platform in its fully collapsed position. For in-plant lifts, rollover loads must not exceed the rated capacity of the lift in order to prevent permanent damage. For dock lifts, rollover loads must not exceed twice the rated lifting capacity.
Safety Factor
The ratio of the maximum load which the lift can withstand to the load which it was designed to withstand under normal operation.
Scissor Lift
A raising/lowering device supported or stabilized by crossing members. Scissors lifts provide the most stable, dependable, and versatile method of lifting heavy loads. Because of their simplicity & few moving parts, maintenance-free bushings, and wide acceptance by customers – scissors tables provide many years of trouble free operation for relatively small capital investment. Scissors lift mechanisms are easily modified by narrowing, widening, combining or stacking to achieve an extremely wide array of configurations to effectively move loads of virtually any size and/or capacity to heights of 20 feet or more. Hydraulic scissor lifts are the most popular, versatile, and economical of all actuation styles, but completely pneumatic or mechanical scissors tables are also available – depending on the demands of the application. Autoquip scissor lifts are designed and manufactured to meet the industry safety requirements set forth in ANSI MH29.1. Scissor Lift Page
Secondary Voltage
Usually the control voltage or the lower voltage in the control box.
Self Contained Power Unit (Internal)
Power unit which is mounted in the lift mechanism.
Service Platform (Work Platform)
Platform Devise that is design to be mounted around the top of a component to allow personnel to work on a part safely. (Used on Freightlift around the top of the Drive base.)
Sequence
The order of a series of operations or movements.
Sheave
Device, which is designed to guide a wire rope or cable. (Pulley)
Side Load Capacity (Axle)
The maximum amount of single axle load (in the case of rolling loads) which may be applied to the loading edge of the platform (side) when the lift is in its raised position.
Side Load Capacity (Edge)
The maximum amount of static load that can be applied to the edge of platform (side) when the lift is in any raised position.
Signal
A command or indication of a desired position or velocity.
Single Acting Cylinder
A cylinder in which hydraulic energy can produce thrust or motion in only one direction. (May be mechanically or gravity returned).
Slack Chain Device
Device used to signal or alert of a slack chain condition.
Slack Chain Limit
Limit switch used to signal or stop the movement of the carriage.
Snap Chain
A length of chain with a clasp on the end to close off the operating end of the carriage.
Spliced Carriage
Carriage that is split or in two pieces and will have to be field assembled. This design facilitates ease of installation and handling.
Spliced Mast
Mast that is not all one piece usually cut at a predetermined length to allow ease of installation or handling.
Straddle
A style of VRC where the carriage rides suspended between two masts that are located on opposite sides of the same carriage. This style of lift will accommodate “C” and “Z” type loading patterns.
Strainer
A device through which a fluid is passed to separate solids in suspensions. A strainer is usually installed on the intake side of a pump.
Strength Factor
The ration of ultimate strength of the material to the design stress at rated lifting capacity.
Stroke
The length of travel of a piston or plunger.
Suction Line
The hydraulic line connecting the pump inlet port to the reservoir or sump.
Super Torque
Designed exclusively for hydraulic lift duty to produce nearly three times the horsepower of conventional motors in the starting windings.
Surge
A transient rise of pressure or flow.
Tank
See Reservoir
TEFC
Totally enclose fan cooled
TENV
Totally enclosed non-ventilated
Thrust Angle
A cross member of the scissors lift upon which the cylinder pushes to create travel.
Toe Guard
A beveled edge, on a platform, which serves as toe protection for personnel.
Torque
A rotary thrust. The turning effort of a fluid motor usually expressed in inch pounds.
Torque Tube
A cross member of a scissors lift that assists to structurally, equalize the loading through the legs of the lift.
Transducer (or feedback transducer)
An element, which measures the results at the load and sends a signal back to the amplifier.
Travel
The distance, which the platform moves from collapsed height to full raised height.
Trunnion
A cross member of a scissors lift which assists to structurally, equalize the loading through the legs of the lift. (Generally, the cylinders are attached to this tube).
Two-Way Valve
A directional control valve with two flow paths.
Valve
A device, which controls fluid flow direction, pressure, or flow rate.
Valve – No Coast
Used when precise positioning is desired. Hydraulic dump values decrease upward coast.
Valve – Minimum Down Drift
Used for positive shutoff. For use where platforms must maintain position for extended periods.
Valve – Up Stop
A hydraulic component used primarily to physically limit the travel of scissors lifts which have RAM type cylinders by depressing a plunger which diverts hydraulic flow from the cylinder to the oil reservoir.
V-Deck Platform
Used to center cylindrical loads or rolls.
“Vee” Wheels
For use with inverted angle or Vee track to provide fixed path lateral movement.
Velocity
The speed of flow through a hydraulic line, Expressed in feet per second (fps) or inches per second (ips).
Velocity Fuse
A hydraulic valve, which in the event of a severed hose or hydraulic failure will lock the oil in the cylinder and prevent the lift from falling.
Vertical Acting Gate
Gate which when opened will move vertically.
Viscosity
A measure of the internal friction or the resistance of a fluid to flow.
Volt
Voltage is the term used to indicate electrical potential.
Volume
The size of a space or chamber in cubic inches. Loosely applied to the output of a pump in gallons per minute (gpm).
VRC - Vertical Reciprocating Conveyor
Warning Light
Light used to signal movement of a certain device.
Wash- Down
Designed to allow the component to be washed down with water.
Water Proof
Device design to prevent water from entering part or component.
Watt
Power is the rate of doing work.