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After-cooler
The after-cooler cools the compressed air from the pump before it enters
the receiver. The heat from the compressed air is transferred outward to
the aluminum fins of the after-cooler, the flywheel/fan creates an air flow
that rushes past and cools the aluminum fins.
Air Cooled Engine
Does not require a radiator but does require adequate air flow around the
engine.
Air Filter
Filters out moisture, dust, rust, etc… from the compressed air.
Air Receiver
The air receiver is simply the air storage tank.
Alternator
A device for converting mechanical energy into
electrical energy.
Amp Rating
The measure of strength of an electric current.
Alternating Current (AC)
Current which varies from zero to a positive maximum to zero
to a negative maximum to zero, a number of times per second, the number
being expressed in cycles per second of Hertz (HZ)
American Public Power Association (APPA)
A national service organization that represents 2000 municipal and other
state or local publicly owned electric utilities spread across
the United States.
Amperage
The measurement of strength of an electric
current.
Arc Voltage
Voltage is the pressure necessary to push current across the gaseous gap
of an arc.
Arc Welder
Use electricity instead of gas as a heat source to deposit filler metal
and fuse two or more pieces of metal together.
Arc
The flow of electricity across an open gap.
ASME Code
American Society on Mechanical Engineers standards are used to test and
certify our 30, 80, and 120 gallon air receivers.
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Backup Generators
Used
for fulfilling emergency load requirement during sudden shortage of
power.
Baffle
A device to prevent direct fluid flow or impingement on a surface.
Battery Charger
A battery charger converts household electricity to direct current needed
to recharge a battery. Direct current has polarity. The amount of electricity
the charger puts into the battery is measured in amperes and is shown on
the ammeter built into most chargers. The charging begins on a dead battery
with a large amount of current going into the battery so the chargers ammeter
registers towards the high end of the scale and declines towards the zero
end of the meter as the battery becomes more fully charged.
Battery Charge
Rectifier
A component which changes AC voltage from the
battery charge windings (within the STATOR) to DC voltage. This voltage
could be used to charge a battery.
Base Metal
The metal to be welded, brazed, soldered or cut.
Bearing Size or ID
The inside diameter (ID) of the bearing which corresponds to the outside
diameter (OD) of the spindle or axle on which the wheel is mounted.
Bearing
Machined part that allows a hub to spin on a spindle.
Belt-Drive Generator Heads
These are generator heads with no engine. The customer usually supplies
his own gas engine and attaches it via a belt. Most of these are designed
to be run at a set RPM or damage may result.
Bevel
An angular type of edge preparations.
Blackout
Sudden disruption of electrical power.
Brush
A conducting element, usually graphite and /or
copper, which maintains sliding electrical contact between a stationary
and a moving element.
Burst Pressure
The pressure which causes rupture. Also, the inside-out differential pressure
that causes outward structural failure.
Butt Joint
A joint between two pieces of metal lying in the same plain.
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Camping Generators
These are usually lightweight, under 3000 watts, and provide 12V battery
charging. In most cases these units are very quiet to comply with National
Park noise regulations.
Capacitor Run Electric Motor
Also referred to as air compressor motors these are very similar to capacitor
start motors with one additional feature. These motors will also use a capacitor
while the motor is running. These are most commonly found on applications
such as air compressors where extra torque is necessary.
Capacitor Start Electric Motor
These motors will have one or more capacitors mounted to the motor that
store electricity until it is turned on. The capacitor gives the motor an
extra boost of electricity to reduce the starting current draw and increase
starting torque.
Check Valve
A check valve allows air to flow in one direction but not the opposite direction.
Clevis
A u-shaped mounting device which contains a common pin hole at right angle
to the axis of symmetry through each arm of the u. A clevis usually connects
with an eye.
Coated Electrode
A metal or alloy rod used in arc welding which is coated with materials
to aid in control of the arc and placing of the weld.
Compliance Engine
These are vertical shaft engines designed for lawnmowers. They comply with
federal laws requiring a brake on the flywheel that stops the engine when
the operator releases the handle.
Conductor
A wire or cable designed for the passage of electrical current.
Contactor
A contactor is an electrically operated switch usually used in control circuits
and whose contacts are considered high amperage, compared to a relay.
Contractor Generator
These are usually ruggedly built to handle lots of abuse. Most will have
a full roll-cage to protect against damage. These generators are usually
large, requiring a wheel kit with handles for greater mobility on the job
site. A contractor generator must have GFCI (ground fault circuit interruption)
as required by OSHA.
Core
The laminations in the generator constituting the magnetic structure thereof.
Corrosion
The chemical change in the mechanical elements caused by the interaction
of fluid or contaminants, or both. More specifically related to chemical
changes in metals.
Cradle
The metal frame that surrounds and protects the generator/engine .
Current
The flow rate of electricity.
Cycle
One complete reversal of alternating current of voltage, from zero to a
positive maximum to zero to a negative maximum back to zero . The number
of cycles per second is the frequency, expressed in Hertz (HZ). A
single complete operation consisting of progressive functions starting and
ending at the neutral position.
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Deep Cycle Battery Charger
A deep cycle battery supplies a relatively low amount of current for a long
period of time. Deep cycle batteries, unlike car starting batteries, can
be run down and recharged repeatedly with minimum loss of capacity.
Deposit
Filler metal added during a welding operation.
Diesel Engine
An internal
combustion engine in which fuel oil is burnt by heat produced from air
compression. The most commonly bought Industrial Diesel Engines are
either Rebuilt Diesel Engines or Used Diesel Engines.
Diesel Generator
Starts up and generates power automatically
during power cut.
Diode
A solid state device which allows current to pass in one direction only.
Since it allows only one half cycle of an alternating current pass, its
out put will be unidirectional and it may be considered a rectifying element.
Direct Current (DC)
An electric current flows in one direction only. DC is produced by chemical
action (i.e. a storage battery) or by electromagnetic induction.
Directional Control
Valve
A valve whose primary function is to direct or prevent flow through selected
passages.
Distribution
Supply of
lower voltage electric power from a centralized substation to the point
of end use.
Drip-Proof Electric Motors
These motors will have all of its cooling vents situated so that any dust
or moisture will not be able to contaminate the innards of the motor. These
are commonly used in shop applications where sawdust or metal particles
are present in the air.
Dual Element Air Cleaner
Double filters intake air for longer engine life.
Duty Cycle
Rated duty cycle is the percentage of a 10 minute period a welding machine
must deliver its rated electrical current load.
Dynamo
A machine for converting mechanical energy into electrical energy by electromagnetic
induction. A generator.
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Electric Motor Efficiency
How efficiently the motor turns electrical energy into mechanical energy.
Motor efficiency is generally in the neighborhood of 85%. The more efficiently
a motor operates, the lower the power cost.
Electric Motor Enclosure
The housing around the motor available in drip-proof, totally enclosed,
and explosion proof.
Electric Motor Frame
The configuration on the base plate of the motor. If the frame can not be
matched new holes can be drilled or base plates can be switched from other
motors.
Electric Motor Multi-Speed
Multi-speed motors are designed for two or more definite rates of speed
remaining practically constant regardless of load changes.
Electric Motor Service Factor
The amount of additional horsepower over and above a motor's listed rating
that it can deliver when necessary as a protection against overload. This
is usually given as a percentage of the listed horsepower.
Electric Motor Synchronous Speed
The speed at which a motor will operate if the rotor turns at exactly the
speed of the magnetic field that drives the rotor.
Electro-Motive
Force (EMF)
The force which causes current to flow in a conductor; in other words, the
voltage potential.
Elevation
The vertical distance between the level where fluid enters a pipe and the
level where it leaves.
Engine Alternator
Engine is equipped to recharge a 12V starter battery.
Engine Auxiliary PTO Shaft
A cam shaft that extends out the side plate of a horizontal engine for reverse
gearing.
Engine Ball Bearing Shaft
The drive shaft is held in place by a ball bearing and spins inside it.
Engine Cast Iron Sleeve
Engine cylinder sleeve is made of cast iron for longer life.
Engine Electric Start
Uses a battery or 110V powered motor to start the engine via a key switch
or button.
Engine Electronic Ignition
Fires a spark electronically.
Engine Gear Reduction
A gear case mounted to an engine to reduce the speed of the crankshaft.
Engine Generator
Generates
electric power with the help of natural gas or diesel reciprocating
engine.
Engine Keyway
A slot or groove in crankshaft for attachment of clutches, pulleys, etc…
Engine Low Oil Shutdown
Will automatically shut engine down if oil level is insufficient for safe
operation.
Engine Mechanical Governor
Throttles engine up to maintain RPM under load.
Engine Mounting Pattern
The bolt hole pattern on the bottom of the crankcase that is used to mount
the engine to its application.
Engine PTO Height
The distance from the mounting base to the center of the PTO on a horizontal
engine shaft.
Engine Toothed Flywheel
Flywheel can work with an electric starter.
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Fender Skirt
The inside panel that attaches to the fender and the framework. Prevents
debris from being thrown upward.
Fender
A cover that goes over the top of a tire to prevent mud, water, and debris
from being thrown.
Filler Metal
Metal to be added in making a weld.
Fixed Axle
A fixed axle is mounted firmly to the frame so that the axle itself does
not spin.
Float Mode Monitoring Battery Charger
Charger holds battery to approximately 13.2 volts to guard against self-discharge.
Charging is minimal using only a few tenths of an amp.
Float Switch
An electrical switch which is responsive to liquid level.
Flow Control Valve
A valve whose primary function is to control flow rate.
Flow Meter
A device which indicates either flow rate, total flow, or a combination
of both.
Flow Switch
An electrical switch operated by a fluid flow.
Fluid Power System
A system that transmits and controls power through use of a pressurized
fluid within an enclosed circuit.
Flux
Material used to prevent, dissolve or ease removal of oxides and undesirable
substances.
Flux-Cored Arc Welding
A process that welds by heating with an electric arc between a continuous
tubular filler metal electrode (wire) and the work piece. Powered flux within
the wire provides shielding to the weld.
Flywheel
Storing energy in a rotating
mass form, Flywheel is a very active substitution of
chemical batteries.
Four Cycle or Four Stroke Engine
Engine is lubricated by oil in the crankcase. Gas and oil are not mixed
for fuel.
Friction Loss
The loss of pressure or head due to the resistance to flow in the pipe and
fittings. Friction loss is influenced by pipe size and fluid velocity and
is usually expressed in feet of head.
Full Pressure Lubrication Engine
Engine is lubricated by means of an oil pump located in the crankcase.
Full Power
Outlet
Enables you to draw the full power of the generator
out of one outlet.
Fully Automatic Battery Charger
The charger turns off automatically when the battery is fully charged. As
the battery loses power the charger automatically turns back on.
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Gas Metal Arc Welding
A process that welds by heating with an electric arc between a continuous
consumable electrode (solid wire) and the work piece. Weld shielding is
provided by an inert gas or gas mixture. Also called MIG welding.
Gauge Pressure (PSIG)
The pressure shown on an air gauge.
Geared Reduction
Gears added between a motor's armature and the output shaft or arbor to
attain slower speeds.
Generator
A general name for a device that converts mechanical energy into electrical
energy. The electrical energy may be direct current (DC) or alternating
current (AC).
GenSet or GenSets
Slang for generator set, made up of
an engine, alternator (generator end) and a control panel.
Grid
In order to meet the power needs at the
grids in different points, a system of power lines and
generators, interconnected is used. This is a grid.
Ground
A connection, intentional or accidental, between
an electrical circuit and the earth or some conduction body serving in the
place of the earth.
GPH
Gallons Per Hour
GPM
Gallons Per Minute
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Hazardous Material
Any poisonous, volatile, explosive or flammable fluid which should not be
moved with a pump designed for dewatering with gasoline or diesel driven
engines.
Head
The distance the pump will push water vertically. The greater the distance
the higher the pressure developed by the pump.
Hertz (Hz)
unit of frequency that
is equal to one cycle per second.
Homeowner Backup Generator
Also known as an emergency generator, these are usually 5000 watts or larger,
depending on the homeowners needs and are powered by gasoline. Diesel, natural
gas or propane models are also available.
Horizontal Engine
Crankshaft comes out the side of the engine.
Horizontal Run
The horizontal distance between the point where fluid enters a pipe and
the point at which it leaves.
Horsepower
The rate at which work is done determined by dividing the work done in foot-pounds
by the time involved.
Hub Length
The distance from the outside of one bearing to the outside of the opposite
bearing.
Hub
Machined metal part which houses the bearings and provides a place to attach
the tires and rims.
Hydraulic Motor
A device which converts hydraulic fluid power into mechanical force and
motion by transfer of flow under pressure. It usually provides rotary mechanical
motion.
Hydraulic Power Unit
A combination of components to facilitate fluid storage and conditioning,
and delivery of the fluid under conditions of controlled pressure and flow
to the discharge port of the pump, including maximum pressure controls and
sensing devices when applicable. Circuitry components, although sometimes
mounted on the reservoir, are not considered part of the power unit.
Hydraulic Pump
A device which converts mechanical force and motion into hydraulic fluid
power by means of producing flow.
Hydraulic Reservoir
A vessel or tank for storing and conditioning liquid in a hydraulic system.
Hydraulic Valve
A valve for controlling liquid flow or pressure.
Hydraulics
Of or pertaining to the engineering science of liquid pressure and flows.
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Idle Control
A system that controls the idle speed of
the engine in direct relation to the electrical load.
Ignition
Coil
A device used to supply DC voltage to the spark
plugs.Inertia
The property of an object to remain at rest or remain moving unless acted
upon by some outside source. In motors, inertia refers to the driven load.
Once a load is in motion the amount of power to keep it in motion is reduced.
Intercooler
The intercooler cools the compressed air as it travels from one stage to
the next higher stage. The flywheel/fan creates an air flow that rushes
past and cools the intercooler.
Inverter
Designed to convert 12V DC power into 110V AC, inverters are normally wired
to the charging system on an automobile. Inverters should be used only in
light duty, short-term usage situations. Joint Penetration The minimum depth
a weld extends from its face into the joint, excluding reinforcement.
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Joint
The junction where two or more members are joined or have been joined by
welding.
Joule
Measurement of electrical energy
equivalent to the work done when a current of one ampere
passes through a resistance of one ohm for one second.
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Kilowatt (KW)
Kilowatt is power needed
to do work at the rate of 1000 joules per second. Used
to determine generator size based on instant demand or
use.
Kilowatt-hour (KWhr)
Total number of
kilowatts used per hour. Or 3,600,000 joules. Cannot be
used to size a generator because it is power use over
time.
KVA
KVA is kilovolt-ampere and is the
unit of apparent power. KVA is used for measuring the
power consumption of non-resistive equipments such as
motors, computers, and most non-incandescent lighting.
In single phase power kW and kVA are the same values.
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Live Axle
A live axle has the wheels, drive sprocket and brake drum mounted firmly
to the axle and the whole axle assembly then spins together.
Load
Load is that the amount of
electric power used by devices associated to electricity
generating system.
Lubricator
A device which adds controlled or metered amounts of lubricant into a pneumatic
system.
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Magneto
An alternator with permanent magnets used to generate
current for ignition in an internal combustion engine.
Manual Battery Charger
The user turns the charger on and off. Output current drops to half the
charging rate as the battery approaches a full charge. Charging must be
monitored to prevent overcharging.
MIG Welder
Metal Inert Gas welders furnish the welding rod in a continuous roll fed
through a handle. The speed that the wire is fed is controlled by the operator.
With the small diameter of wires the hot rod and molten pool of weld are
protected from oxidation by a flow of inert gas that comes from the gun
to enclose the area being welded.
Motor Bearings
Support both ends of the motor shaft allowing it to rotate smoothly with
a minimum of wear and friction. Motors come with either sleeve bearings
or ball bearings.
Motor Generator
Normally used either to regulate or
condition power from a raw power source like electric utility grid.
Muffler
A device for reducing gas flow noise. Noise is decreased by back pressure
control of gas expansion.
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N.H.S.
Not for highway service.
NEMA
The National Electric Manufacturers' Association. An organization which
establishes certain voluntary industry standards related to motors.
Nipple
A short length of pipe or tube.
Non-Utility Generator
Connected to an electric
utility system, Non-utility Generator generates electricity specifically
for those not owned by an electric utility.
NPT
National Std. Pipe-Tapered.
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OD
Outside Diameter.
Off-Peak
A specific period when power
demand of a system is comparatively low. Counted from 10
p.m. until 6 a.m., from Monday through Saturday and
during the whole day on Sunday by NERC.
Off-Peak Rate
This is the rate of cost
for power used during Off-Peak periods.
OHC (Over Head Cam) Engine
Cam shaft and valves are mounted above the piston in the cylinder head.
Ohm
Unit of electrical resistance. One volt will cause
a current of one flow through a resistance of one ohm.
OHV (Over Head Valve) Engine
Intake and exhaust valve are mounted above the piston in the cylinder head.
Overhead Valve Engine
Use extra large mufflers, intake silencers, and advanced piston, camshaft
and gear technologies to produce a significant reduction in noise.
Overlap
Protrusion of weld metal beyond the bond line at the toe of the weld.
Oxy-Acetylene Welder
Uses acetylene with pure oxygen instead of air to create temperatures up
to 6000 degrees F. When the amount of oxygen is varied, the flame can be
used to either weld or cut.
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Pass
A single progression of a welding or surfacing operation along a joint.
The result of a pass is a weld bead or layer.
Peak
Measurement of the maximum load
that is consumed within a specified time period.
Phase
The uniform periodic change in amplitude or magnitude
of an alternating current. Three phase alternating current consists of three
different sine wave current consists of three different sine wave current
flows, different in phase by 120 degrees from each other. Usually
refers to the number of
leads that supply power to an appliance. Most home and farm electrical sources
will be single phase, meaning only two leads supply power to the appliance.
Commercial or industrial applications are commonly three phase, with three
electrical leads supplying power.
Plasma Arc Cutting
An arc cutting process which severs metal by using a constricted arc to
melt a small area of the work. This process can cut all metals that conduct
electricity.
Porosity
Gas pockets or voids in metal.
Port
An internal or external terminus of a passage in a component.
Power
The time rate at which work is done.
Power Transfer
System
A system to safely wire your generator to your
home's electrical system.
Power Unit
A combination of pump, pump drive, reservoir, controls and conditioning
components which may be required for its application.
Pressure Switch
A pressure switch has preset cut in/cut out pressure points to control engine/motor.
Pressure Switch
An electrical switch operated by fluid pressure.
Pressure
Force per unit area, usually expressed in pounds per square inch in the
English system.
PTO Generator
These large generators are usually powered by the PTO (power take-off) system
on a farm tractor. They are generally inexpensive compared to the wattage
they offer because they have no engine.
PTO
Power Take Off.
Pump
A device which converts mechanical force and motion into hydraulic fluid
power. It produces flow.
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Quick Disconnect
A coupling which can quickly join or separate a fluid line without the use
of tools or special devices.
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Race
The guide in which bearings are held and through which they move.
Rated Voltage
The specific voltage
measurement at which an engine generator set can start
functioning.
Rated Flow
The maximum flow that the power supply system is capable of maintaining
at a specific operating pressure.
Rated Line Pull
The maximum pulling capacity of the winch on the first layer of wire rope.
Rated Pressure
The qualified operating pressure, which is recommended for a component or
a system by the manufacturer.
Rated Speed
Revolutions per minute at which the set is designed
to operate.
Rated Voltage
The rated voltage of an engine generator set is
the voltage at which it is designed to operate.
Rear Bearing Carrier
The casting which houses the rotor bearing which
supports the rotor shaft.
Rectifier
A device that converts AC to DC.
Relay
An electrically operated switch usually used in
control circuits and whose contacts are considered low amperage, compared
to a contactor
Remote Control Switch
Sometimes referred to as a solenoid switch assembly. It is an electric switch
used to control the spooling in and out of the cable.
Resistance
Opposition to the flow of current.
Return Line
The line conducting fluid from working devices to the reservoir.
Rotor
The rotating element of a generator.
Rotor winding
Comprises of all the
rotor pole windings and connections.
RPM
Revolutions Per Minute.
Running Torque
The effort a motor delivers at any given RPM or horsepower.
RV Generators
Similar to camping generators, these will meet National Park Regulations
on noise and offer 12V battery charging. Unlike camping generators they
will be larger and are designed to be mounted in a small compartment underneath
the vehicle. Most are designed to be started remotely from inside the vehicle
and are usually connected either to the gas tank of the vehicle or run on
LP. Many are liquid cooled because of the restricted air flow in the generator
compartment.
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SAE Port
A straight thread port used to attach tube and hose fittings. It employs
an O ring compressed in a wedge-shaped cavity.
Self-Priming
Refers to the ability of a pump to separate air from water and create a
partial vacuum or low-pressure area in the pump body. This causes water
to flow to the impeller and on through the pump.
Semi-Pneumatic Tires
Hollow center tires that have no air pressure inside.
Service Pressure
The range of pressure in the pressure tank during the pumping cycle, usually
expressed in pounds per square inch gauge.
Servo valve
A valve which modulates output as a function of an input command.
Shutoff Valve
A valve which operates fully open or fully closed.
Single Phase
An AC load, or source of power normally having
only two input terminals if a load or two output terminals if a source.
Most homes are single phase and most businesses are three phase.
Single Point of Failure
Single point
of failure is a location in a redundant system where a
single powers failure results in loss of electrical
power to the critical load.
Spark Arrester
Keeps sparks from being ejected by the exhaust. The sparks occur when carbon
deposits in the cylinder break loose and are ignited by the exhaust gases.
Spark arresters are required in many areas.
Spatter
Metal particles expelled during welding that do not form part of the weld.
Spindle
The machined part of the axle on both ends. This is the part of the axle
the bearings slide on to.
Split Phase Electric Motor
These are usually small, light duty motors for fans and blowers. Most are
1/2 HP or less. These motors will operate using either single phase 110V
AC or three phase 110V in an industrial application.
Spot Welding
Usually made on materials having some type of overlapping joint design.
Can refer to resistance, MIG, or TIG spot welding. Resistance spot welds
are made from electrodes on both sides of the joint, while TIG and MIG spots
are made from one side only.
Standard
A document, or an object for physical comparison, for defining product characteristics,
products, or processes: prepared by a consensus of a properly constituted
group of those substantially affected and having the qualifications to prepare
the standard for voluntary use.
Standby Generator
Used for power
backup in home.
These are usually permanently mounted to a concrete slab. They feature automatic
or remote start/stop. Usually fueled by
natural gas, propane, or diesel.
Standby (Backup) Service
Service
through a permanent connection not normally used but
available in lieu of, or as a supplement to, the usual
source of supply.
Standby Power
This is the backup
source of electrical energy that remains dormant and
starts functioning as soon as a control device instructs
it to.
Starter or Booster Battery Charger
These chargers are used to assist the battery when the vehicle's battery
will not turn the engine over.
Starting Torque
The amount of torque produced by a motor as its rotor breaks free from a
standstill and begins to spin.
Stator
The stationary part of a generator.
Stator winding
Comprises of stator
coils with their interconnections.
Stick Welding
An arc welding process which melts and joins metals by heating them with
an arc, between a covered metal electrode and the work. Shielding gas is
obtained from the electrode outer coating, often called flux. Filler metal
is primarily obtained from the electrode core.
Strainer
A round fitting at the end of the suction hose which is matched to the size
of a pump and permits solids only a certain size to enter the pump body.
The strainer eliminates potential damage to the impeller.
Surge
A transient rise of pressure or flow.
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Tack Weld
A weld made to hold parts together in proper alignment until the final welds
are made.
Tandem Trailer Axle
Refers to a trailer which has two axles instead of one allowing the trailer
to carry additional weight.
Tank
A container for the storage of fluid in a fluid power system.
Tapped and Threaded Engine Shaft
Center of shaft end is drilled then hole is threaded to accept a bolt.
Threaded Engine Shaft
Shaft is threaded externally.
Three Phase
An AC load, or source of power normally having
three input terminals if a load or three output terminals if a source. Most
homes are single phase and most businesses are three phase.
Tie Plate
Metal plate which secures the spring to the axle using u-bolts.
Tie Rod
An axial external cylinder rod which traverses the length of the cylinder.
It is pre-stressed at assembly to hold the ends of the cylinder against the
tubing.
TIG Welding
This welding process joins metals by heating them with a tungsten electrode
which should not become part of the completed weld. Filler metal is sometimes
used and argon inert gas or inert gas mixtures are used for shielding.
Torque
A rotational twisting force. Force which tends to produce torsion or rotation.
The amount of force produced by a motor to turn a shaft.
Torsion Suspension
A crank arm style suspension system that contains the springing mechanism
in the bar that crosses the width of a trailer. This type of axle eliminates
the need to purchase springs, shackles, and some mounting hardware separately.
Total Head
The distance a pump will lift and push a liquid. Lift plus head equals total
head.
Totally Enclosed Electric Motors
These motors will be used in applications similar to drip-proof motors and
are recommended for any outdoor use. These will have no cooling vents instead
they have an internal cooling fan and no contamination is able to enter
the motor at all.
Tracking Distance
The distance from the hub face on the right side of the trailer axle to
the hub face on the left side of the trailer axle. If the rims of the tire
assemblies are centered it can be measured from the center of the tire on
the right to the center of the tire on the left.
Trailer Axle
A steel bar or tube that extends the width of the trailer. It supports the
framework of the trailer when attached to the springs. Also serves as a
mounting point for trailer hubs and tire assemblies.
Trailer Ball
Mounted on the hitch the trailer ball acts as a universal joint between
the trailer and towing vehicle. The most common ball sizes are 1 7/8 inch,
2 inch, and 2 5/16 inch.
Trailer Bolt Circle
The distance from the center of the hub to the center of one of the tire
mounting holes doubled.
Trailer Coupler
The formed metal part welded or bolted to the trailer tongue that allows
the trailer to be attached to the coupler ball on the towing vehicle.
Trailer Hanger
A bracket mounted to the frame of the trailer which allow you to install
the springs and shackles.
Trailer Hitch
Metal framework that attaches to the towing vehicle and is sometimes referred
to as the receiver.
Trailer Jack
A lifting mechanism used to keep the coupler off the ground and allow for
easier hookup to the towing vehicle.
Trailer Spring Center
The distance from center of the spring on the right side of the trailer
to the center of the spring on the left side.
Trailer Spring
Cushions the trailer frame and cargo from bumps and pot holes in the road
surface.
Trailer Tongue
The part of the trailer that separates the cargo from the towing vehicle.
This is where the trailer coupler and jack are usually mounted.
Trickle Charge Battery Charger
Provides 1, 1.5, or 2 amps for charging small batteries and keeps large
batteries topped off.
Tube Type Tire
Requires a tube to be inserted into the tire to hold air.
Turbine Generator
Running on gas or
steam turbine, turbine generator generates electricity
through electromagnetic forces caused by steam, water or
wind etc.
U
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UPS (Uninterruptible Power Supply)
Supplies power automatically and instantly during
shortage of power supply. UPS operation is dependent on
a primary power source such as the electric utility
grid, as it does generate power itself.
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Valve
A device which controls fluid flow direction, pressure, or flow rate.
Vibration Mount
A rubber device located between the engine or
generator and the cradle to minimize vibration.
Volt
The unit of electromotive force. That electromotive
force which when steadily applied to a conductor whose resistance is one
ohm will produce a current of one ampere.
Voltage
Electrical potential difference expressed in volts.
Voltage is the measurement of electrical force. It is the force that delivers
current when electricity is applied to an electrical device.
Voltage Regulator
A component which automatically maintains proper
generator voltage by controlling the amount of DC excitation to the rotor.
Volute
The housing in which the impeller rotates with channels cast into the metal
to direct the flow of water in a given direction.
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Watt
Unit of electrical power. In DC equals volts times
amperes. In AC equals effective volts times effective amps times power factor
times a consistent dependent on the number of phases. 1 kilowatt = 1,000
watts. One watt is
equal to 1 joule of energy per second.
Winding
All the coils of a generator. Stator winding consists
of a number stator coils and their interconnections. Rotor windings consist
of all windings and connections on the rotor poles.
Weld Metal
The portion of a weld which has melted during welding.
Weld
The local melting together of metal, produced by heating with or without
the use of filler metal.
Welding Clamp
Helps position the work pieces and lock them in place while a weld is being
made.
Welding Rod
Used to melt two pieces of metal together to form a weld.
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