The below is provided for your ready reckoner of the meanings of the trade names of the features

TermMeaning
Access PlateRemovable or hinged plate in platform surface which allows access to power unit and hydraulics when lift is in the down position.
Accordion SkirtA 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 scissor 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.
ActuatorActuator is a device for converting hydraulic, electric, or pneumatic energy into mechanical energy.
Air Bag ActuationInflatable air bag provides travel. Use when electric power is not available and/or desirable or hydraulic is not acceptable.
Air/HydraulicA system where the primary power is air, which runs the pumps, which sends hydraulic fluid to the cylinders. An air powered hydraulic actuator system.
AmpereThe ampere is the unit of measure for the rate of flow of electric current.
AnchorsHardware used for Fastening Equipment to Floor or Walls.
Anti-Skid SurfaceDiamond tread or abrasive material applied to lift platform.
Approach RampHinged or fixed plate with structural support from floor level to top of lift platform for loading and unloading.
ATFAutomatic Transmission Fluid.
Audible SignalAlarm or signal used to alert personnel of equipment starting or moving.
Authorized PersonTrained and/or qualified personnel approved or assigned to perform a specific duty or duties.
Automatic IndexingOptical or mechanical sensing to position platform at preset height(s).
Automatic Landing GateA landing gate that automatically opens or closes, respectively, as a lift platform arrives at or departs from subject landing.
Auxiliary ContactElectrical contact used as another switching device on Contactor.
Back FrameThe vertical portions of the carriage on cantilever Freightlift.
Back StopA back stop panel is installed opposite the loading edge of a VRC platform to prevent a load from falling to the lower level.
BaffleA device, usually a plate, installed in a reservoir to separate the pump inlet from return lines.
Ball ScrewRotary to linear motion conversion device, usually electric.
Ball Transfer SurfaceBall type conveyors built into platform, either fixed or retractable.
Base Frame Build UpIncreases lowered height and provides under-clearance.
BearingA load support that provides for relative motion between the load and the support.
Bearing LoadThe load supporting machine element.
Beveled Toe GuardsAccording 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-OffTo divert a specific controllable portion of pump flow directly back to reservoir.
BOMBill of Materials for a job or part. The list of all components used for a specific assembly.
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.
BreatherA device, which permits air to move in and out of a reservoir or component to maintain atmospheric pressure. (Prevents a vacuum)
BushingA lining for reducing friction on moving parts.
Bushing, CompositeA proprietary filled PTFE liner which is securely bonded to the epoxy-glass filament, wound composite backing.
By-PassA secondary passage for fluid flow.
CableWire rope.
Cable ReevingThe routing of the wire rope on a Freightlift.
Cam FollowerA wheel or roller used to carry the capacity of a lift or turntable on a surface.
CantileverA 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, LiftingThe rated capacity of a scissor lift applied as a uniformly distributed load while the platform is raising or lowering.
Capacity, RatedThe maximum load which can be applied to the platform according to the manufacturer’s specification.
Capacity, RolloverThe maximum amount of single axle load which can be rolled over the platform surface when the lift is in its fully closed position.
CarriageThe entire assembly that travels in the mast and carries the load.
Cartridge1) 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.
CastersFixed or swivel, can be positioned in a variety of configurations for portability and transportability.
Center of GravityLocation through which the entire mass of an object can be resolved.
Check ValveA valve, which permits flow of fluid in one direction only.
CircuitAn arrangement of components interconnected to perform a specific controlling function within a system.
ClevisA structural-mounting device used in scissor lifts (used in attaching platform to legs and legs to base.
CompressibilityThe change in volume of a unit volume of a fluid when it is subjected to a unit change in pressure.
ContactorElectrical device that is specifically sized for a Motor.
Continuous DutyThe motor is rated to run continuous, although it may also be used intermittently.
Continuous Running MotorA motor which remains running even when the lift is not in use.
Control TransformerAn electrical component which alters (reduces) the primary voltage.
Control VoltageThe secondary voltage, which comes from the transformer to the push-button.
ControllerThe assembly of electrical components which transforms primary voltage to secondary voltage and controls the functions of the motor and the control valves.
ControlsAny electrical device used in the operation of a Lift normally includes push button stations, control box, limit switches, interlocks, etc.
Controls – Constant PressureA pushbutton control of travel which when finger is removed from button, travel stops.
Controls – Press and HoldThese operator controls shall: •Be of the type when pressed will make the scissor lift operate. •Be of the type when released the scissor lift will stop. •Return to the off position when released. •Be clearly marked as to direction and function. •Be protected from inadvertent operation. •Be readily accessible to the operator.
Controls – Press and ReleasePush button control which can be pushed to activate and released, travel ceases automatically at preset level. These operator controls shall: •Be of the type that when pressed will make the scissor lift operate. •Be of the type that will continue to operate the scissor lift until stopped by another control device. •Return to a neutral position when released. •Include an emergency stop device that deactivates all powered functions that affect scissor lift movement. •Be protected from inadvertent operation. •Be readily accessible to the operator. •Not to be used on industrial scissor lifts that allow operators and/or riders.
Conveyor, Vertical ReciprocatingVertical 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.
Counterbalance ValveA pressure control valve which maintains back pressure to prevent a load from falling.
Critical ComponentsThose components whose absence or failure would cause the equipment of which they are a part of to become inadequate or unsafe for its specific purpose.
CycleA cycle is a period of time between motor starts.
CylinderA 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, Direct ActingThe cylinder or ram transmits lifting force directly to the carriage rather than through the use of cables, sheaves or chains.
Cylinder, Double ActingA 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, RamA cylinder in which the movable element has the same cross sectional area as the piston rod (single acting).
Cylinder, Single ActingA cylinder in which the fluid force can be applied to the movable element in only one direction.
Cylinder, Single RodA cylinder with a piston rod extending from only one end.
Deltatrol ValveA control valve which is proprietary to Autoquip, contains check valve, down valve, Flow control, pressure relief, oil filtration, and pressure regulator.
Direct Acting CylinderThe cylinder or ram transmits lifting force directly to the carriage rather than through the use of cables, sheaves or chains.
Directional ValveA valve, which selectively directs or prevents fluid flow to desired channels.
DisplacementThe quantity of fluid which can pass through a pump, motor or cylinder in a single revolution or stroke.
Dock LiftA stationary or portable scissor lift used in the area of a dock to transfer loads (typically wheeled loads) from a fixed elevation to a vehicle; the lift is operated from the platform which may include rider(s) in addition to the operator. Most dock lifts are permanently installed in concrete pits, but some scissor-style lifts are portable for use in multiple locations such as truck delivery areas that have no elevated dock or where recessed pits are not feasible. Autoquip dock lifts share common features for rugged, outdoor use and required safety measures: 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.
Down SolenoidAn electrical mechanical device that, when electrically energized, opens the down valve.
DriftThe 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 BarA bar that prevents loads from rolling off the platform.
DU BushingA pre-finished, high performance, bearing used in the pivot points of a scissor lift. (Lead Impregnated Teflon with steel backing)
Dual Tap TransformerProvides (2) different secondary voltages from the same device.
Ductile MaterialMaterials having a minimum elongation of 5% in 2 inches (50.8mm).
Dump ValveA valve used to divert hydraulic flow directly to tank.
Dust TightIs design to prevent any dust from entering the device.
Duty CycleThe rating of an electrical motor or component.
Electric Toe GuardA 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/HydraulicA system which primary power is electric, which runs (pumps) hydraulic fluid to the cylinders.
EnclosureStructure 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)
ErgonomicThe applied science of workplace equipment design, intended to maximize productivity by reducing operator fatigue, discomfort, and wasted motion.
Explosion ProofElectrical Devices that are designed for a specific location or area where certain Hazardous condition may or can exist.
F.O.B.Point where freight begins and where shipping charges begin.
FilterA 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 WheelsFor use with flat or rail type track to provide fixed path lateral movement.
Flow Control ValveA valve, which controls the rate of oil flow.
Flow RateThe volume of a fluid passing through the circuit per unit of time, usually gallons per minute.
Flush Mount Push-ButtonPush- Button that mounts in the wall, which allows only the cover plate and push-button to be visible.
Fork PocketsAllow unit to be readily moved by fork truck.
GateA 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.
GibDevice used to contain roller pin or roller.
GPMGallons per Minute.
Guarded by LocationDescribes 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 AngleDimension given to set the mast on a Freight Lift.
Handrails and Snap ChainFor 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 DutyUsually a location which requires special electrical components.
High CycleA requirement for continuous cycling of the lift and power unit, typically considered more than 60,000 cycles per year.
High SpeedFaster than standard engineered speeds.
Hinged BridgeA hinged transition plate which is attached to the edge of the platform and used to bridge the gap between the platform and landing and/or truck bed.
Horizontal Sliding GateA gate that operates horizontal to the floor.
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.
HydraulicOperation by movement and force of liquid.
Hydraulic Piping SystemThe entire system of fluid conductors such as hose, pipe, tubing, etc., utilized to transfer hydraulic fluid between various operating components of a hydraulic system such as pumps, valves, actuators, etc.
InterlockAn 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 StopUsually a stop between Top and Bottom floors, or travel of the platform.
Intermittent DutyMotor is rated to run only part time. (2 min. run time and 2 min. rest time.)
KilowattPower is the rate of doing work.
LandingA permanent working surface at a fixed elevation used for loading/unloading a scissor lift platform. (G) positioned at that elevation.
Landing GateA mechanical barrier to control personnel traffic at a landing.
Landing InterlockA device to prevent lift movement when a landing gate is not fully closed and to prevent the landing gate from being opened unless the lift platform is present at that landing.
Lift TableA stationary, portable or transport scissor lift used to raise, lower, stack, convey and/or transfer material from one elevation to another. No riders are allowed on the platform. Scissor 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 – scissor tables provide many years of trouble free operation for relatively small capital investment. Scissor 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 scissor 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.
Lifting CapacityThe rated load of a scissor lift applied as a uniformly distributed load.
Limit SwitchAn electrical device that stops travel and prevents over travel. It also provides height positioning and activates associated equipment.
Limited TravelTravel is limited either with electrical device (limit switch) or mechanical device.
Linear ActuatorA device for converting hydraulic energy into linear motion – a cylinder or ram.
Load HeightThe maximum height of material a Platform can accommodate.
Load PatternA 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 LeftStanding outside the gate facing the gate, handle on the left, gate swings outward.
Lock RightStanding outside the gate, facing the gate, handle on the right, gate swings outward.
Maintain LimitLimit, which stays tripped in the direction of travel.
ManifoldA fluid conductor providing multiple connection ports.
Manual ControlA control actuated by the operator, regardless of the means of actuation. Example: Lever or foot pedal control for directional valves.
Manual OverrideA means of manually actuating an automatically controlled device.
ManufacturerA person or entity that makes, builds, or produces an industrial scissor lift.
Mast(s)The vertical members between which the carriage is guided throughout its vertical travel.
Mechanical StopA mechanical means of stopping travel at a predetermined spot or to prevent over travel.
MotorA device, which converts fluid or electricity into mechanical force and motion. It usually provides rotary mechanical motion.
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.
Motor, Fixed DisplacementA motor in which the displacement per cycle cannot be varied.
Motor, LinearA term sometimes used in reference to a cylinder.
Mounted By OthersThe mounting of components will be by someone other than Autoquip Personnel.
NEMA Type 1 EnclosureEnclosures 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 12 EnclosureEnclosures 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 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 EnclosureEnclosures 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 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 EnclosureEnclosures 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); 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.
NEMA Type 2 EnclosureEnclosures 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 EnclosureEnclosures 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 EnclosureEnclosures 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 3RX EnclosureEnclosures 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 3S EnclosureEnclosures 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 3SX EnclosureEnclosures 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 3X EnclosureEnclosures 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 4 EnclosureEnclosures 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 EnclosureEnclosures 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 EnclosureEnclosures 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 EnclosureEnclosures 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 EnclosureEnclosures 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.
Non-Ductile MaterialMaterials having an elongation of less than 5% in 2 inches (50.8mm).
Non-Operating EndThe side(s) of the platform not used for loading/unloading. Handrails with midrail and kickplate are supplied as minimum safety protection.
ODPOpen Drip Proof (usually referred to on Electric motors)
Oil TightIs for a fitting or box that will not let oil enter into the system or device.
Operating EndThe side(s) of the platform used for loading/unloading. A safety chain is supplied as minimum safety protection.
Operational SignalsVisual or audible alarms warn personnel when lift is in use.
OperatorAn authorized person controlling the movement of the industrial scissor lift.
OrificeA 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.
OwnerA person or entity that has possession of an industrial scissor lift by virtue of title to the equipment.
Pantograph Leg SectionThe articulated support mechanism characterized by a single central pivot axis and commonly referred to as the scissor leg assembly.
PistonA 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.
PlatformThe horizontal surface of the platform or carriage where the load is placed.
Platform EndsThe edges of the platform that are perpendicular to the scissor legs. The end dimension is considered the platform width.
Platform SidesThe edges of the platform that are parallel to the scissor legs. The side dimension is considered the platform length.
PlungerA cylindrically shaped part, which has only one diameter and is used to transmit thrust.
PneumaticOf or relating to air or another gas.
Pneumatic Piping SystemThe entire system of pneumatic conductors such as hose, pipe, tubing, etc., utilized to transfer gas between various operating components of the pneumatic system such as pumps, valves, actuators, etc.
PoppetThat part of certain valves which prevents flow when it closes against a seat.
PortAn internal or external terminus of a passage in a component.
Positive DisplacementA characteristic of a pump or motor, which has the inlet positively, sealed from the outlet so that fluid cannot re-circulate in the component.
PowerWork per unit of time, measured in horsepower (hp) or watts.
Power PackAn integral power supply unit usually containing a pump, reservoir, relief valve and directional control.
Power UnitAn assembly including, but not limited to the motor, pump, reservoir, and the Autotrol valve.
Pre-WiredMeans that all practical devices are wired to the control box either to terminal strip or to the device.
PressureForce per unit area, usually expressed in pounds per square inch (psi).
Pressure LineThe line carrying the fluid from the pump outlet to the pressurized port of the actuator.
Pressure Relief ValveA 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 SwitchA 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.
Primary VoltageThe main Power being supplied to the motor and the control box, (usually the high voltage on our products.)
PumpA device, which causes a liquid to flow against a pressure. It converts mechanical force and motion into hydraulic fluid power.
Pump, Fixed DisplacementA pump in which the displacement per cycle cannot be varied.
Pump, GearA pump having two or more intermeshing gears or lobed members enclosed in a housing.
Pump, VaneA pump having multiple radial vanes within a supporting rotor.
Pump, Variable DisplacementA pump in which the displacement per cycle can be varied.
Push-Button StationThe hand held or wall mounted device used to control the motion of the platform.
Qualified PersonA 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 DisconnectAllows for quick disconnect of controls, air, or other lines. Used with portable or frequently relocated lifts. Not available for power supply line.
Rain TightDevice designed to prevent rain from entering the device.
Raised HeightThe total height, measured from the bottom of the base to the top of the platform when the lift is in a fully raised position.
RamA single-acting cylinder with a single diameter plunger rather than a piston and rod.
Rating, End/Side Axle LoadThe maximum amount of single axle load (in the case of rolling loads) which can be applied to the loading edge of the platform (end or side) when the lift is in any raised position. This rating considers: 1) that some amount of deflection will occur during load transfer, 2) the moving and impact forces imposed by the load, 3) that this is a temporary condition during load transfer only, and 4) that the scissor lift platform is static and non-moving.
Rating, End/Side Edge LoadThe maximum amount of static load that can be applied to the edge of the platform (end or side) when the lift is in any raised position. This rating considers: 1) that some amount of deflection will occur during load transfer, 2) that this is a temporary condition during load transfer only, and 3) that the scissor lift platform is static and non-moving.
Reference DimensionDimension given as informative but not used for locating.
Remote Power UnitPower unit that will be mounted outside of the lift.
ReservoirA tank that holds fluid (oil) for the hydraulic power unit. A container for storage of liquid in a fluid power system.
RestrictionA reduced cross-sectional area in a line or passage, which produces a pressure drop.
Return LineA line used to carry exhaust fluid from the actuator back to the reservoir.
RolloverThe amount of load being rolled over a lift platform in its fully collapsed position. For inplant 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.
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.
Safety FactorThe ratio of the maximum load which the lift can withstand to the load which it was designed to withstand under normal operation.
Scissor LiftA raising/lowering platform that is supported or stabilized by one or more pantograph leg sections. Scissor 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 – scissor tables provide many years of trouble free operation for relatively small capital investment. Scissor 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 scissor 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, mobileA work access lift designed for lateral movement where: 1) there may be material on the lift platform, 2) there may be operators or other riders on the lift platform during lateral movement, 3) the lift platform may be in a raised position during lateral movement, and 4) the lateral movement is restricted to a predetermined path via tracks, grooves, or other physical guides.
Scissor Lift, portableA scissor lift designed for lateral movement from one stationary work station to another where: 1) there is no load on the lift platform during lateral movement, 2) there are no operators or other riders on the lift platform during lateral movement, 3) the lift platform is in the fully lowered position during lateral movement, and 4) the lateral movement is unrestricted.
Scissor Lift, transportA lift table designed for lateral movement where: 1) there may be a load on the lift platform during lateral movement, 2) there are no operators or other riders on the lift platform, 3) the lift platform may be in a raised position during lateral movement, and 4) the lateral movement may be unrestricted.
Secondary VoltageUsually 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.
SequenceThe order of a series of operations or movements.
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.)
ShallThe word “shall” is to be understood as mandatory.
SheaveDevice, which is designed to guide a wire rope or cable. (Pulley)
ShouldThe word “should” is to be understood as advisory.
SignalA command or indication of a desired position or velocity.
Single Acting CylinderA cylinder in which hydraulic energy can produce thrust or motion in only one direction. (May be mechanically or gravity returned).
Slack Chain DeviceDevice used to signal or alert of a slack chain condition.
Slack Chain LimitLimit switch used to signal or stop the movement of the carriage.
Snap ChainA length of chain with a clasp on the end to close off the operating end of the carriage.
Spliced CarriageCarriage that is split or in two pieces and will have to be field assembled. This design facilitates ease of installation and handling.
Spliced MastMast that is not all one piece usually cut at a predetermined length to allow ease of installation or handling.
Stability/StableA condition in which the sum of the moments that tend to overturn the industrial scissor lift is less than the sum of the moments tending to resist overturning.
StraddleA 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.
StrainerA 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 FactorThe ration of ultimate strength of the material to the design stress at rated lifting capacity.
StrokeThe length of travel of a piston or plunger.
Structural Strength FactorThe ratio of minimum specified ultimate strength of a material to its design stress at maximum rated capacity.
Suction LineThe hydraulic line connecting the pump inlet port to the reservoir or sump.
Super TorqueDesigned exclusively for hydraulic lift duty to produce nearly three times the horsepower of conventional motors in the starting windings.
SurgeA transient rise of pressure or flow.
TankSee Reservoir
TEFCTotally Enclosed, Fan-Cooled
TENVTotally Enclosed Non-Ventilated
Thrust AngleA cross member of the scissor lift upon which the cylinder pushes to create travel.
Toe GuardA beveled edge, on a platform, which serves as toe protection for personnel.
TorqueA rotary thrust. The turning effort of a fluid motor usually expressed in inch pounds.
Torque TubeA cross member of a scissor lift that assists to structurally, equalize the loading through the legs of the lift.
Trained PersonnelPersonnel who have been trained by a qualified person and have demonstrated the ability to perform a particular function on or around a scissor lift.
Transducer (or feedback transducer)An element, which measures the results at the load and sends a signal back to the amplifier.
TravelThe vertical distance, which the platform moves from collapsed height to full raised height.
TrunnionA cross member of a scissor lift which assists to structurally, equalize the loading through the legs of the lift. (Generally, the cylinders are attached to this tube).
Two-Way ValveA directional control valve with two flow paths.
UserA person or entity that has care, control and custody of an industrial scissor lift.
V-Deck PlatformUsed to center cylindrical loads or rolls.
ValveA device, which controls fluid flow direction, pressure, or flow rate.
Valve – Minimum Down DriftUsed for positive shutoff. For use where platforms must maintain position for extended periods.
Valve – No CoastUsed when precise positioning is desired. Hydraulic dump values decrease upward coast.
Valve – Up StopA hydraulic component used primarily to physically limit the travel of scissor lifts which have RAM type cylinders by depressing a plunger which diverts hydraulic flow from the cylinder to the oil reservoir.
Vee WheelsFor use with inverted angle or Vee track to provide fixed path lateral movement.
VelocityThe speed of flow through a hydraulic line, Expressed in feet per second (fps) or inches per second (ips).
Velocity FuseA 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 GateGate which when opened will move vertically.
Vertical CreepUnintended vertical movement of an industrial scissor lift.
Vertical TravelThe difference between the fully raised height of the platform deck and the fully closed height of the platform deck.
ViscosityA measure of the internal friction or the resistance of a fluid to flow.
VoltVoltage is the term used to indicate electrical potential.
VolumeThe size of a space or chamber in cubic inches. Loosely applied to the output of a pump in gallons per minute (gpm).
Warning LightLight used to signal movement of a certain device.
Wash-DownDesigned to allow the component to be washed down with water.
Water ProofDevice design to prevent water from entering part or component.
WattPower is the rate of doing work.
Work Access LiftA stationary, portable or mobile scissor lift operated from the platform which may include rider(s) in addition to the operator; the lift may be used to transfer material from one elevation to another.