Train wheel

wheelswheelcarwheelflanged steel wheelsflangesrail car wheelsrailroad wheelrailway wheerailway wheelsafety wheels
A train wheel or rail wheel is a type of wheel specially designed for use on rail tracks.wikipedia
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Track (rail transport)

trackrailroad trackstracks
A train wheel or rail wheel is a type of wheel specially designed for use on rail tracks.
It enables trains to move by providing a dependable surface for their wheels to roll upon.

Bogie

trucksbogiestruck
A rolling component is typically pressed onto an axle and mounted directly on a rail car or locomotive or indirectly on a bogie (UK), also called a truck (North America).
A bogie (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles.

Wheel

wheelsroadwheelswheeled
A train wheel or rail wheel is a type of wheel specially designed for use on rail tracks.

Mansell wheel

Mansell composite wheel
Tires of different designs were fitted to wheels with wooden centers (Mansell wheels in the UK) and to various other types.
The Mansell Wheel is a railway wheel patented by Richard Mansell, the Carriage and Wagon superintendent of the South Eastern Railway in the UK.

Wheelset (rail transport)

wheelsetwheelsetswheel sets
A wheelset is the wheel–axle assembly of a railroad car.

Interference fit

press fitfriction fitPress fitting
The tire is primarily held in place by its interference fit.
In the case of train wheelsets the wheels are pressed onto the axles by force.

Axle

axlesrear axlehalf shaft
A rolling component is typically pressed onto an axle and mounted directly on a rail car or locomotive or indirectly on a bogie (UK), also called a truck (North America).

Railroad car

railway carriagecarsrailway car
A rolling component is typically pressed onto an axle and mounted directly on a rail car or locomotive or indirectly on a bogie (UK), also called a truck (North America).

Locomotive

locomotivesmixed trafficrailway locomotive
A rolling component is typically pressed onto an axle and mounted directly on a rail car or locomotive or indirectly on a bogie (UK), also called a truck (North America).

Casting

castcastscasting process
Wheels are cast or forged and are heat-treated to have a specific hardness.

Forging

forgedforged steeldrop forging
Wheels are cast or forged and are heat-treated to have a specific hardness.

Lathe

lathesreducing lathelathing
New wheels are trued, using a lathe, to a specific profile before being pressed onto an axle.

Wheel–rail interface

wheel-rail interfacewheel to rail forcewheel-rail force
All wheel profiles need to be periodically monitored to ensure proper wheel-rail interface.

Rolling resistance

rolling frictionrolling resistance coefficientbelow
Improperly trued wheels increase rolling resistance, reduce energy efficiency and may create unsafe operation.

Energy efficiency in transport

energy efficiencyfuel efficiencyFuel efficiency in transportation
Improperly trued wheels increase rolling resistance, reduce energy efficiency and may create unsafe operation.

Tire

tyretirestyres
A railroad wheel typically consists of two main parts: the wheel itself, and the tire (or tyre) around the outside. The wheels of many rail vehicles, especially steam locomotives and older types of rolling stock, are fitted with steel tires (or tyres in British English, Australian English and others) to provide a replaceable wearing element on a costly wheel.

Steel

steel industrysteelworkersteels
A rail tire is usually made from steel, and is typically heated and pressed onto the wheel, where it remains firmly as it shrinks and cools.

Natural rubber

rubberIndia rubbercaoutchouc
Monobloc wheels do not have encircling tires, while resilient rail wheels have a resilient material, such as rubber, between the wheel and tire.

Rail profile

railsrailVignoles rail
Train wheels have a flange on one side to keep the wheels, and hence the train, running on the rails when the limits of the geometry-based alignment are reached, e.g. due to some emergency or defect.

Road–rail vehicle

road-rail vehicleroad-railHiRail truck
Wheels used for road-rail vehicles are normally smaller than those found on other types of rolling stock (such as locomotives or carriages).

British English

BritishEnglishUK
The wheels of many rail vehicles, especially steam locomotives and older types of rolling stock, are fitted with steel tires (or tyres in British English, Australian English and others) to provide a replaceable wearing element on a costly wheel.

Australian English

EnglishAustralianAustralia
The wheels of many rail vehicles, especially steam locomotives and older types of rolling stock, are fitted with steel tires (or tyres in British English, Australian English and others) to provide a replaceable wearing element on a costly wheel.

Swaging

swageswagedswage line
Hydraulically operated rolls swage the groove down onto the retaining ring.

Flat spot

flat-spottedflat-spottingflat-spot
Severe braking or low adhesion may stop the rotation of the wheels while the vehicle is still moving, which can cause a flat spot on the tire and localized heat damage to the tire material.