Bogie
Overview
 
A bogie is a wheel
Wheel
A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

ed wagon or trolley. In mechanics
Machine
A machine manages power to accomplish a task, examples include, a mechanical system, a computing system, an electronic system, and a molecular machine. In common usage, the meaning is that of a device having parts that perform or assist in performing any type of work...

 terms, a bogie is a chassis
Chassis
A chassis consists of an internal framework that supports a man-made object. It is analogous to an animal's skeleton. An example of a chassis is the underpart of a motor vehicle, consisting of the frame with the wheels and machinery.- Vehicles :In the case of vehicles, the term chassis means the...

 or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar track
Caterpillar track
Continuous tracks or caterpillar tracks are a system of vehicle propulsion in which modular metal plates linked into a continuous band are driven by two or more wheels...

ed vehicle.
A bogie in the UK, or a wheel truck, or simply truck in North America, is a structure underneath a train
Train
A train is a connected series of vehicles for rail transport that move along a track to transport cargo or passengers from one place to another place. The track usually consists of two rails, but might also be a monorail or maglev guideway.Propulsion for the train is provided by a separate...

 to which axle
Axle
An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

s (and, hence, wheel
Wheel
A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

s) are attached through bearing
Bearing (mechanical)
A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as well as by the directions of applied loads they can...

s.
Encyclopedia
A bogie is a wheel
Wheel
A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

ed wagon or trolley. In mechanics
Machine
A machine manages power to accomplish a task, examples include, a mechanical system, a computing system, an electronic system, and a molecular machine. In common usage, the meaning is that of a device having parts that perform or assist in performing any type of work...

 terms, a bogie is a chassis
Chassis
A chassis consists of an internal framework that supports a man-made object. It is analogous to an animal's skeleton. An example of a chassis is the underpart of a motor vehicle, consisting of the frame with the wheels and machinery.- Vehicles :In the case of vehicles, the term chassis means the...

 or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar track
Caterpillar track
Continuous tracks or caterpillar tracks are a system of vehicle propulsion in which modular metal plates linked into a continuous band are driven by two or more wheels...

ed vehicle.

Railway

A bogie in the UK, or a wheel truck, or simply truck in North America, is a structure underneath a train
Train
A train is a connected series of vehicles for rail transport that move along a track to transport cargo or passengers from one place to another place. The track usually consists of two rails, but might also be a monorail or maglev guideway.Propulsion for the train is provided by a separate...

 to which axle
Axle
An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

s (and, hence, wheel
Wheel
A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

s) are attached through bearing
Bearing (mechanical)
A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as well as by the directions of applied loads they can...

s. In Indian English
Indian English
Indian English is an umbrella term used to describe dialects of the English language spoken primarily in the Republic of India.As a result of British colonial rule until Indian independence in 1947 English is an official language of India and is widely used in both spoken and literary contexts...

, bogie may also refer to an entire railway carriage.

The first British railway to build coaches with bogies, instead of rigidly-mounted axles, was the Midland Railway
Midland Railway
The Midland Railway was a railway company in the United Kingdom from 1844 to 1922, when it became part of the London, Midland and Scottish Railway....

 in 1874.

Bogies serve a number of purposes:
  • Support of the rail vehicle body.
  • Stability on both straight and curved track.
  • Ensuring ride comfort by absorbing vibration and minimizing centrifugal forces when the train runs on curves at high speed.
  • Minimizing generation of track irregularities and rail abrasion.


Usually two bogies are fitted to each carriage
Railroad car
A railroad car or railway vehicle , also known as a bogie in Indian English, is a vehicle on a rail transport system that is used for the carrying of cargo or passengers. Cars can be coupled together into a train and hauled by one or more locomotives...

, wagon or locomotive
Locomotive
A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...

, one at each end. An alternate configuration often is used in articulated vehicle
Articulated vehicle
An articulated vehicle is a vehicle which has a permanent or semi-permanent pivoting joint in its construction, allowing the vehicle to turn more sharply. There are many kinds of articulated vehicles, from heavy equipment to buses, trams and trains...

s, which places the bogies (often jacobs bogie
Jacobs bogie
Jacobs bogies are a type of rail vehicle bogie commonly found on articulated railcars and tramway vehicles....

s) under the connection between the carriages or wagons.

Most bogies have two axles as it is the simplest design, but some cars designed for extremely heavy loads have been built with up to five axles per bogie. Heavy-duty cars may have more than two bogies using span bolster
Span bolster
A span bolster, in rail terminology, is a beam or frame used to link two trucks or bogies so that they can be articulated together and be joined to the locomotive or railroad car at one rotating mounting point...

s to equalize the load and connect the bogies to the cars.

Usually the train floor is at a level above the bogies, but the floor of the car may be lower between bogies, such as for a double decker train to increase interior space while staying within height restrictions
Loading gauge
A loading gauge defines the maximum height and width for railway vehicles and their loads to ensure safe passage through bridges, tunnels and other structures...

, or in easy-access, stepless-entry low-floor trains.

Key components of a bogie include:
  • The bogie frame itself. This can be of inside frame type where the main frame and bearings are between the wheels, or (more commonly) of outside frame type where the main frame and bearings are outside the wheels.
  • Suspension
    Suspension (vehicle)
    Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a dual purpose — contributing to the car's roadholding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants...

     to absorb shocks between the bogie frame and the rail vehicle body. Common types are coil spring
    Coil spring
    A Coil spring, also known as a helical spring, is a mechanical device, which is typically used to store energy and subsequently release it, to absorb shock, or to maintain a force between contacting surfaces...

    s, or rubber airbags.
  • At least one wheelset
    Wheelset (railroad)
    A wheelset is the wheel-axle assembly of a railroad car. The frame assembly beneath each end of a car, railcar or locomotive that holds the wheelsets is called the bogie...

    , composed of an axle
    Axle
    An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

     with a bearing
    Bearing (mechanical)
    A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as well as by the directions of applied loads they can...

    s and wheel
    Wheel
    A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

     at each end.
  • Axle box suspension to absorb shocks between the axle bearings and the bogie frame. The axle box suspension usually consists of a spring between the bogie frame and axle bearings to permit up and down movement, and sliders to prevent lateral movement. A more modern design uses solid rubber springs.
  • Brake equipment
    Brake (railway)
    Brakes are used on the cars of railway trains to enable deceleration, control acceleration or to keep them standing when parked. While the basic principle is familiar from road vehicle usage, operational features are more complex because of the need to control multiple linked carriages and to be...

    . Two main types are used: brake shoe
    Brake shoe
    A brake shoe is the part of a braking system which carries the brake lining in the drum brakes used on automobiles, or the brake block in train brakes and bicycle brakes.-Automobile drum brake:...

    s that are pressed against the tread of the wheel, and disc brake
    Disc brake
    The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel while it is in motion.A brake disc is usually made of cast iron, but may in some cases be made of composites such as reinforced carbon–carbon or ceramic matrix composites. This is connected to the wheel and/or...

    s and pads.
  • In powered vehicles, some form of transmission
    Transmission (mechanics)
    A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as: an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a...

    , usually an electrically powered traction motor
    Traction motor
    Traction motor refers to an electric motor providing the primary rotational torque of a machine, usually for conversion into linear motion ....

    s or a hydraulically powered torque converter
    Torque converter
    In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...

    .


The connections of the bogie with the rail vehicle allows a certain degree of rotational movement around a vertical axis pivot (bolster), with side bearers preventing excessive movement. More modern bolsterless bogie designs omit these features, instead taking advantage of the sideways movement of the suspension to permit rotational movement.

BR1 bogie

The British Railways Mark 1
British Railways Mark 1
British Railways Mark 1 was the family designation for the first standardised designs of railway carriages built by British Railways. Following nationalisation in 1948, BR had continued to build carriages to the designs of the "Big Four" companies , and the Mark 1 was intended to be the...

 coach brought into production in 1950 utilised the BR1 bogie, which was rated to run at 90 mph (145 km/h). The wheels were cast as a one-piece item in a pair with their axle. The simple design involved the bogie resting on four leaf spring
Leaf spring
Originally called laminated or carriage spring, a leaf spring is a simple form of spring, commonly used for the suspension in wheeled vehicles...

s (one spring per wheel) which in turn were connected to the axles. The leaf springs were designed to absorb any movement or resonance and to have a damping effect to benefit ride quality
Ride quality
Ride quality refers to the degree of protection offered vehicle occupants from uneven elements in the road surface, or the terrain if driving off-road. A car with very good ride quality is also a comfortable car to ride in. Cars which disturb vehicle occupants with major or minor road...

.

Each spring was connected to the outermost edge of the axle by a roller bearing contained in oil-filled axle box. The oil had to be topped up at regular maintenance times to avoid the bearing running hot and seizing.

There was also a heavy-duty version designated BR2.

Commonwealth bogie

The Commonwealth bogie, manufactured by SKF
SKF
SKF, Svenska Kullagerfabriken AB , later AB SKF, is a Swedish bearing company founded in 1907, supplying bearings, seals, lubrication and lubrication systems, maintenance products, mechatronics products, power transmission products and related services globally.-History:The company was founded on...

 or Timken
Timken Company
The Timken Company is a global manufacturer of bearings, alloy steels, and related components and assemblies.- History :The company was founded by Henry Timken in St. Louis, Missouri in 1899 and incorporated as The Timken Roller Bearing Axle Company. A year earlier, in 1898, Timken got a patent...

, was introduced in the late 1950s for all BR Mark 1 vehicles. It was a heavy, cast-steel design weighing about 6.5 LT with sealed roller bearings on the axle ends, avoiding the need to maintain axle box oil levels.

The leaf springs were replaced by coil springs (one per wheel) running vertically rather than horizontally. The advanced design gave a better ride quality than the BR1, being rated for 100 miles per hour (160.9 km/h).

The side frame of the bogie was usually of bar construction, with simple horn guides attached, allowing the axleboxes vertical movements between them. The axleboxes had a cast steel equaliser beam or bar resting on them. The bar had two steel coil springs placed on it and the bogie frame rested on the springs. The effect was to allow the bar to act as a compensating lever between the two axles and to use both springs to soften shocks from either axle. The bogie had a conventional bolster suspension with swing links carrying a spring plank.

B4 bogie

The B4 bogie was introduced in 1963. It was a fabricated steel design as versus cast iron and was lighter than the Commonwealth, weighing in at 5 LT. It also had a speed rating of 100 miles per hour (160.9 km/h).

Axle/spring connection was again with fitted roller bearings. However, now two coil springs rather than one were fitted per wheel.

Only a very small amount of Mark 1 stock was fitted with the B4 bogie from new, it being used on the Mark 1 only to replace worn out BR1 bogies. The British Rail Mark 2
British Rail Mark 2
The Mark 2 family of railway carriages were British Rail's second design of carriages. They were built by British Rail workshops between 1964 and 1975...

 coach however carried the B4 bogies from new. A heavier duty version, the B5, was standard on Southern Region Mk1 based EMUs from the 1960s onwards. Some Mark 1 catering cars had mixed bogies—a B5 under the kitchen end, and a B4 under the seating end. Some of the B4 fitted Mark 2s, as well as many B4 fitted Mark 1 BG
Brake Gangwayed
The Brake Gangwayed or BG coach is a type of British Railways Mark 1 passenger brake van. It has a guard's compartment in the centre and two large areas either side for storing luggage...

s were allowed to run at 110 miles per hour (49.2 m/s) with extra maintenance, particularly of the wheel profile, and more frequent exams.

BT10 Bogie

The BT10 bogie was introduced on the British Rail Mark 3
British Rail Mark 3
British Rail's third design of standard carriage was designated 'Mark 3' , and was developed primarily for the InterCity 125 High Speed Train...

 coach in the 1970s. Each wheel is separately connected to the bogie by a swing-arm axle.

There is dual suspension:
  • primary suspension via a coil spring and damper mounted on each axle.
  • secondary suspension via two air springs mounted on the pivot plank. This is connected to the bogie by pendulum links. A constant coach height is maintained by air valves.

Locomotives

Diesel and electric
Most diesel locomotive
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

s and electric locomotive
Electric locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or an on-board energy storage device...

s are carried on bogies (trucks - US). Trucks used in the USA include AAR type A switcher truck
AAR type A switcher truck
The AAR type A switcher truck is a diesel locomotive truck introduced by EMD and installed as standard equipment on most EMD switcher locomotives and on those of other manufacturers. It was designed by Martin P Blomberg and its US Patent was filed on Jul 6, 1937 and approved Nov 15, 1938 under...

, Blomberg B
Blomberg B
The Blomberg B was a "B" diesel locomotive truck. These trucks were the standard EMD four wheel truck from the FT up until the GP60. EMD introduced the truck in 1936. Unofficially it is named after Martin Blomberg, who joined the company the year before...

, HT-C truck
HT-C truck
The HT-C truck was created in 1970 by Electro-Motive Diesel as a component of their range of railway locomotives through to 1994. It was mounted under the experimental EMD SD45X, and applied to a majority of EMD Dash 2, 50 and 60 series six axle units built by EMD...

 and Flexicoil.

Steam
On a steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

 the leading wheel
Leading wheel
The leading wheel or leading axle of a steam locomotive is an unpowered wheel or axle located in front of the driving wheels. The axle or axles of the leading wheels are normally located in a truck...

s and trailing wheel
Trailing wheel
On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle located behind the driving wheels. The axle of the trailing wheels was usually located on a trailing truck...

s may be mounted on bogies. Articulated locomotive
Articulated locomotive
Articulated locomotive usually means a steam locomotive with one or more engine units which can move independent of the main frame. This is done to allow a longer locomotive to negotiate tighter curves...

s (e.g. the Fairlie
Fairlie
A Fairlie is a type of articulated steam locomotive that has the driving wheels on bogies. The locomotive may be double-ended or single ended...

) have power bogies similar to those on diesel and electric locomotives.

Modern

Tram bogies are much simpler in design because of their axle load, and the tighter curves found on tramways mean that tram bogies almost never have more than two axles. Furthermore, some tramways have steeper gradients and vertical as well as horizontal curves, which means that tram bogies often need to pivot on the horizontal axis as well.

Some articulated trams have bogies located under articulations, a setup referred to as a Jacobs bogie
Jacobs bogie
Jacobs bogies are a type of rail vehicle bogie commonly found on articulated railcars and tramway vehicles....

. Often low-floor tram
Low-floor tram
A low-floor tram is a tram that has no stair steps between one or more entrances and part or all of the passenger cabin. The low-floor design improves the accessibility of the tram for the public, and also may provide larger windows and more airspace....

s are fitted with non-pivoting bogies and many tramway enthusiasts see this as a retrograde step, as it leads to more wear of both track and wheels and also significantly reduces the speed at which a tram can round a curve. The only 100% low floor tram with pivoting bogies - Škoda ForCity
Škoda 15 T
Škoda 15T is a 100% low floor tram developed by Škoda for the Transport Company of Prague in the years 2005-2008. The order and subsequent construction was influenced by experiences with operation of the Škoda 14 T in the Prague tram network...

 - uses the Jacobs bogie
Jacobs bogie
Jacobs bogies are a type of rail vehicle bogie commonly found on articulated railcars and tramway vehicles....

.

Historic

In the past, many different types of bogie ("truck") have been used under tramcars, e.g. "Brill", "Peckham" and "maximum traction". A maximum traction truck has one driving axle with large wheels and one non-driving axle with smaller wheels. The bogie pivot is located off-centre so that more than half the weight rests on the driving axle.

Tracked vehicles

Some tank
Tank
A tank is a tracked, armoured fighting vehicle designed for front-line combat which combines operational mobility, tactical offensive, and defensive capabilities...

s and other tracked
Caterpillar track
Continuous tracks or caterpillar tracks are a system of vehicle propulsion in which modular metal plates linked into a continuous band are driven by two or more wheels...

 vehicles have bogies as external suspension components (see armoured fighting vehicle suspension). This type of bogie usually has two or more road wheels and some type of sprung suspension to smooth the ride across rough terrain. Bogie suspensions keep much of their components on the outside of the vehicle, saving internal space. Although vulnerable to antitank fire, they can often be repaired or replaced in the field.

Hybrid systems

The retractable stadium roof on Toronto's Roger's Centre utilized modified 'off the shelf' train bogies on a circular rail. The system was chosen for its proven reliability.

Rubber-tyred metro
Rubber-tyred metro
A rubber-tyred metro is a form of rapid transit system that uses a mix of road and rail technology. The vehicles have wheels with rubber tyres which run on rolling pads inside guide bars for traction, as well as traditional railway steel wheels with deep flanges on steel tracks for guidance through...

 trains utilise a specialised version of railway bogies. As well as the standard running wheels (rubber instead of steel) there are additional horizontal guide wheels in front of and behind the running wheels.

Variable gauge axles

To overcome breaks of gauge some bogies are being fitted with variable gauge axles (VGA) so that they can operate on two different gauges. These include the SUW 2000
SUW 2000
SUW 2000 is a type of variable gauge system that allows a train to travel across a railway break-of-gauge.The SUW 2000 design is manufactured by Polish company ZNTK Poznań for Polish State Railways...

 system from ZNTK
ZNTK Nowy Sacz
ZNTK Nowy Sącz is the former name of Newag S.A. in Nowy Sącz, Poland. It is manufacturing electric multiple unit trains and trams....

.

Cleminson system

The Cleminson system is not a true bogie but serves a similar purpose. It was based on a patent of 1883 by James Cleminson and was once popular on narrow-gauge rolling stock, e.g. on the Isle of Man Railway
Isle of Man Railway rolling stock
The rolling stock used on the Isle of Man Railway today is entirely original but the serviceable passenger coaches number 14, out of an original total of 75 carriages...

 and Manx Northern Railway
Manx Northern Railway
The Manx Northern Railway was the second common carrier railway built in the Isle of Man. It operated as an independent concern only from 1879 to 1905.- History :...

. The vehicle would have three axles and the outer two could pivot to adapt to curvature of the track. The pivoting was controlled by levers attached to the third (centre) axle which could slide sideways.

Manufacturers

  • Siemens (link including 70 pages very detailed technical catalog)
  • Bombardier
  • Alstom
  • Vickers Ruwolt

See also

  • Bissel bogie
    Bissel bogie
    A Bissel truck is a very simple and commonly used way of designing a carrying axle on a steam locomotive to enable it to negotiate curves more easily. The design uses a single-axled bogie, usually known as a pony truck, whose pivot is towards the centre of the locomotive...

  • Blomberg B
    Blomberg B
    The Blomberg B was a "B" diesel locomotive truck. These trucks were the standard EMD four wheel truck from the FT up until the GP60. EMD introduced the truck in 1936. Unofficially it is named after Martin Blomberg, who joined the company the year before...

  • Flange
    Flange
    A flange is an external or internal ridge, or rim , for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel...

  • Jacobs bogie
    Jacobs bogie
    Jacobs bogies are a type of rail vehicle bogie commonly found on articulated railcars and tramway vehicles....

  • Krauss-Helmholtz bogie
    Krauss-Helmholtz bogie
    A Krauss-Helmholtz bogie is a mechanism used on a steam locomotive, where a carrying axle is connected to a coupled axle via a lever such that when the carrying axle swings to the side on going round a curve, it causes the coupled axle to move sideways in the opposite direction...

  • Mason Bogie
    Mason Bogie
    The Mason Bogie is a type of articulated steam locomotive suited for sharp curves and uneven track, once commonly used on narrow gauge lines in the United States...


  • Pony truck
    Pony truck
    A pony truck, in railway terminology, is a leading truck with only two wheels.Its invention is generally credited to Levi Bissell, who devised one in 1857 and patented it the following year. Hence the term Bissel bogie or axle is used in continental Europe...

  • Radial steering truck
    Radial steering truck
    A Radial steering truck is a type of bogie used on locomotives. On railroad equipment, "trucks" are the wheel assemblies that the train rides the rails on. Trucks are found on almost all train equipment with the exception of some steam locomotives...

  • Rocker-bogie
    Rocker-bogie
    The Rocker-Bogie system is the suspension arrangement used in the Mars rovers introduced for the Mars Pathfinder and also used on the Mars Exploration Rover and Mars Science Laboratory missions. It is currently NASA's favored design....

  • Schwartzkopff-Eckhardt II bogie
    Schwartzkopff-Eckhardt II bogie
    A Schwartzkopff-Eckhardt II bogie is a mechanical device to improve the curve running of steam locomotives....

  • Syntegra
    Syntegra
    Syntegra is a bogie developed by Siemens incorporating an axle mounted gearless electric drive in an inside wheel bearing bogie.The design was unveiled at Innotrans in 2006, and began service trials in 2008 on the Munich U-Bahn.-Design:...


  • Trailing wheel
    Trailing wheel
    On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle located behind the driving wheels. The axle of the trailing wheels was usually located on a trailing truck...

  • Wheel arrangement
    Wheel arrangement
    In rail transport, a wheel arrangement is a system of classifying the way in which wheels are distributed beneath a locomotive.. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and connections, with the adopted notations varying by country...

  • Wheelbase
  • Wheel gauge
  • Wheelset (rail transport)


External links

TRUCK (bogie) with tyres Arbel Faufet Rail Bogies Track modelling
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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