Rail & Transit parts lists
BOMwiki lists 99 products in rail & transit, with 1,762,448 parts counted across their recorded bills of materials. The highest recorded part count is the high-speed trainset at 1,445,128 parts across 13 top-level items; the lowest is the rail milling train at 35. Open a product to explore its recorded components and their roles. Counts describe the current BOMs, not a complete inventory of every product variant.
99 products
Airport Apron Bus
Wide low-floor bus for ferrying passengers across airport aprons.
759 parts · 9 BOM lines
Articulated Bus
A high-capacity transit bus built in two rigid body sections joined by a pivoting articulation turntable and a flexible bellows, with a rear diesel/CNG engine driving the centre axle.
795 parts · 15 BOM lines
Auto-Rack Railcar
Multi-level enclosed railcar for transporting new automobiles.
522 parts · 9 BOM lines
Automated People Mover
Driverless guideway vehicle shuttling passengers within airports.
450 parts · 10 BOM lines
Autorack Wagon
A multi-deck flatbed rail wagon with stacked loading levels, ramps, side panels, bogies, and load tie-down fittings for transporting automobiles.
217 parts · 8 BOM lines
Axle Counter System
A railway safety system detecting passing axles via wheel sensors and transmitting train presence status to a central evaluation unit.
40 parts · 6 BOM lines
Ballast Cleaning Machine
Mobile excavating machine extracting ballast from beneath track, screening it to remove fines and debris, then returning clean stone.
54 parts · 6 BOM lines
Ballast Regulator
Track maintenance machine that shapes and distributes track ballast.
234 parts · 9 BOM lines
Ballast Tamper
A self-propelled on-track machine that packs ballast and corrects track geometry.
141 parts · 9 BOM lines
Ballast Tamping Machine
Self-propelled machine that compacts ballast under railway sleepers by vibrating tines driven hydraulically and controlled via integrated measuring system.
51 parts · 6 BOM lines
Ballast Undercutter
Tracked machine excavating ballast from beneath railway sleepers using a rotating cutting chain bar, with automatic spoil conveyance and fresh ballast hoisting.
38 parts · 6 BOM lines
Blood Donation Bus
A mobile blood collection facility on a bus chassis with sterile phlebotomy stations, refrigerated blood storage, donor lounges with recliners, and generator-backed electrical systems.
124 parts · 8 BOM lines
Bookmobile
A mobile library vehicle with shelving systems, access lift, climate control, and generator mounted on a bus or large van chassis.
116 parts · 8 BOM lines
Boxcar
Enclosed railway freight car for weather-sensitive general cargo.
256 parts · 8 BOM lines
Bus Rapid Transit Vehicle
High-capacity articulated bus running on dedicated busway lanes.
4,251 parts · 12 BOM lines
Cable Car
A street railway car with no onboard motor. It is propelled by an underground steel cable running at a constant 9.5 mph; the gripman lowers a lever-operated grip through a slot in the street pavement, clamps the moving cable, and is dragged along by it.
334 parts · 8 BOM lines
Caboose
Crew car formerly placed at the end of a freight train: steel underframe and body shell on two friction-bearing trucks, an elevated cupola or bay-window crew lookout, a stove-heated interior, hand and air brake gear, marker lamps, and a desk for the conductor.
190 parts · 10 BOM lines
Catenary Maintenance Vehicle
A self-propelled rail vehicle with an insulated aerial work platform used to inspect, repair, and tension overhead contact-line (catenary) equipment on electrified railways.
576 parts · 9 BOM lines
City Bus
A low-floor diesel transit bus.
40,967 parts · 17 BOM lines
Coach Bus
Long-distance highway bus with reclining seats and luggage bays.
999 parts · 9 BOM lines
Commuter EMU
Self-propelled electric multiple-unit train for suburban service: a pantograph collects 25-kV AC, a main transformer and traction converter feed distributed motors on powered bogies, with regenerative braking and a high-density passenger saloon.
14,010 parts · 14 BOM lines
Container Flatcar (Well Car)
An unpowered intermodal freight wagon with a low central well that carries ISO shipping containers, riding on two bogies and connected into a train by couplers, draft gear, and a continuous air brake.
171 parts · 7 BOM lines
Diesel Multiple Unit
Self-propelled diesel passenger train with no separate locomotive: an underfloor diesel power pack with hydrodynamic transmission drives a powered bogie on each motored car, fed from underslung fuel tanks and cooled by roof or underfloor radiators.
12,609 parts · 15 BOM lines
Diesel Shunter
A small 0-6-0 diesel-hydraulic yard switcher: a turbocharged inline-six diesel drives a torque-converter transmission through a jackshaft and coupling rods, with heavy ballast for adhesion and radio remote control for one-man operation.
4,407 parts · 11 BOM lines
Diesel-Electric Locomotive
A freight road locomotive: a V16 diesel prime mover turns a main alternator that feeds rectified DC to traction inverters and axle-hung traction motors on two bogies.
181,216 parts · 13 BOM lines
Dining Car
A single-deck catering carriage with a galley kitchen, refrigeration, dishwashing and a dining saloon of fixed tables and seats, riding on standard trailer bogies with air brakes, HVAC and plug doors.
1,219 parts · 11 BOM lines
Double-Deck Coach
A bilevel hauled passenger coach with seating on two decks.
1,455 parts · 13 BOM lines
Double-Decker Bus
A two-level city bus carrying around 90 passengers on the footprint of a single-decker, built on an integral two-storey body with a rear-mounted diesel or electric drivetrain and an internal staircase.
864 parts · 9 BOM lines
Double-Decker Train
An unpowered double-deck passenger coach: a steel-and-aluminium carbody shell with two seating decks joined by internal stairs, riding on bogies, with air-conditioning, plug doors and end gangways.
1,994 parts · 9 BOM lines
Double-Stack Well Car
Intermodal railcar with a depressed center well that lets one container sit low between the trucks and a second stack on top, doubling container capacity within the loading gauge; built as a multi-unit articulated set sharing trucks between platforms.
334 parts · 7 BOM lines
Dynamic Track Stabilizer
Mobile vibration compactor operating rollers against ballast and rails using variable-frequency excitation to compact subgrade, with automatic load feedback control.
52 parts · 6 BOM lines
Electric Bus
Battery-powered transit bus charged at depots or en-route.
4,481 parts · 9 BOM lines
Electric Locomotive
A mainline AC electric locomotive: 25 kV roof pickup feeding a transformer, IGBT traction converters, and four traction motors across two bogies.
2,774 parts · 14 BOM lines
Fare Gate
An automated passenger access control gate reading tickets and cards and opening a passage barrier upon valid entry.
73 parts · 7 BOM lines
Flash-Butt Rail Welding Machine
A heavy-duty welding machine that flash-welds two abutting rail ends together using electrical heating and mechanical pressure.
80 parts · 7 BOM lines
Freight Locomotive
Powerful locomotive built to haul long heavy freight consists.
1,597 parts · 12 BOM lines
Freight Wagon
A covered hopper railcar: welded underframe and hopper body on two three-piece bogies, AAR knuckle couplers, and an AAR air brake system for bulk dry-goods transport.
183 parts · 7 BOM lines
Friction Buffer Stop
A fixed track-end safety device absorbing train kinetic energy through friction shoe deformation before a fixed backstop.
35 parts · 7 BOM lines
Funicular Car
A passenger car for steep inclined railways, hauled by a steel rope from a stationary winding house, with a stepped body that keeps floors level and spring-applied track brakes that grip the rail if the rope fails.
355 parts · 7 BOM lines
Gondola Railcar
Open-top railway car for hauling bulk loads like scrap and ore.
292 parts · 10 BOM lines
Gondola Wagon
An open-top freight wagon with high steel sides and ends for carrying bulk and heavy loads such as coal, scrap, aggregate, and steel, riding on two bogies with a continuous air brake.
169 parts · 7 BOM lines
Heritage Streetcar
Vintage-style single-truck or double-truck electric tram drawing 600-750 V DC from an overhead wire through a trolley pole, driven by two nose-suspended traction motors and operated on tourist and city loops.
888 parts · 8 BOM lines
High-Speed Trainset
An electric multiple-unit (EMU) high-speed trainset with distributed traction.
1,445,128 parts · 13 BOM lines
Hopper Car
Railway freight car that discharges bulk material through bottom doors.
246 parts · 8 BOM lines
Hot Box Detector
A lineside infrared monitoring system with wheel sensors, processing cabinet, and telemetry detecting bearing failures before catastrophic seizure.
39 parts · 7 BOM lines
Knuckle Coupler
An AAR Type E knuckle (Janney) coupler with friction draft gear, the automatic coupling at each end of a North American railcar.
63 parts · 8 BOM lines
Level Crossing Barrier
A motorised boom gate that closes a road across a railway when a train approaches, sequenced with flashing lights and a bell by a fail-safe control cabinet.
108 parts · 7 BOM lines
Light Rail Vehicle
A bidirectional articulated light rail vehicle (LRV) with low-floor center section.
1,264 parts · 15 BOM lines
Maglev Trainset
A high-speed train that rides a guideway without wheel contact, lifted and steered by electromagnets and propelled by a long-stator linear synchronous motor built into the track.
1,133 parts · 9 BOM lines
Metro Car
A single EMU subway/metro car: aluminium carbody on two bogies, third-rail/pantograph traction, sliding plug doors, and TCMS train control.
1,156 parts · 12 BOM lines
Minibus
Small bus seating around a dozen passengers for shuttle routes.
1,878 parts · 10 BOM lines
Mobile Library Bus
Bus fitted with shelving to bring lending books to communities.
924 parts · 9 BOM lines
Monorail Car
A straddle-beam rubber-tired monorail car: it sits astride a concrete guideway beam on two bogies whose load tires roll on top of the beam while guide and stabilizing tires grip its sides. AC traction motors, third-rail collection, and TCMS train control.
700 parts · 11 BOM lines
Observation Car
Rear passenger carriage with large windows for scenic viewing.
205 parts · 10 BOM lines
OHL Recording Car
Rail-mounted instrumented vehicle measuring overhead line geometry, wear, and contact stresses using pantograph probe, laser and camera sensors feeding real-time tracking database.
38 parts · 6 BOM lines
Open-Top Tour Bus
Double-decker sightseeing bus with an open upper deck.
660 parts · 10 BOM lines
Overhead Wire Maintenance Car
Rail car with a raised platform to inspect and repair catenary wires.
230 parts · 9 BOM lines
Party Bus
Converted bus with lounge seating and entertainment for events.
696 parts · 9 BOM lines
Passenger Coach
A non-powered (hauled) main-line passenger coach: steel carbody shell on two trailer bogies, plug doors, full interior with toilet module, roof HVAC, and onboard low-voltage electrical, water, and brake systems.
769 parts · 12 BOM lines
Passenger Locomotive
A high-speed electric express locomotive drawing 25 kV from overhead catenary through a roof pantograph and main transformer, feeding four-quadrant converters and traction inverters that drive four AC motors on two Bo-Bo bogies geared for 200 km/h.
10,641 parts · 13 BOM lines
Platform Screen Doors
Automatic sliding glass safety barriers sealing the metro platform edge during train boarding and departure.
114 parts · 7 BOM lines
Rack Railway Car
A self-propelled mountain railcar that climbs grades up to about 48% by meshing a driven pinion into a toothed rack rail laid between the running rails, with a separate rack brake biting the same rack for controlled descent.
823 parts · 10 BOM lines
Rail Bike
Pedal-powered rail vehicle with flanged wheel sets, pedal drivetrain, outrigger arm for balance, and dual seats.
87 parts · 7 BOM lines
Rail Drilling Machine
A portable rail-clamping drilling unit with spindle, feed mechanism, coolant system, and automatic depth stop for precise fishplate bolt holes.
44 parts · 8 BOM lines
Rail Grinding Machine
A self-propelled on-track maintenance vehicle that restores rail head profile by grinding away surface defects with rotating abrasive stones while travelling at working speed.
832 parts · 11 BOM lines
Rail Inspection Trolley
Light powered vehicle for crews to inspect and maintain track.
251 parts · 8 BOM lines
Rail Milling Train
Multi-wagon specialized train grinding worn rail running surfaces using rotating milling cylinders with swarf collection and online measuring feedback.
35 parts · 5 BOM lines
Rail Saw
A portable abrasive-disc cutting saw driven by a gasoline engine, equipped with a rail clamp and guide frame for straight field cuts.
52 parts · 8 BOM lines
Rail Threading Machine
Stationary or mobile gantry-mounted machine threading rail ends through precision roller guides and hydraulic clamps for alignment and welding setup.
68 parts · 6 BOM lines
Railcar Mover
A road-rail mobile railcar mover that shunts wagons on rail and drives on roads.
181 parts · 10 BOM lines
Railroad Derailer
A fixed or portable safety device forcing derailing blades into the wheel path to safely stop unauthorized or runaway trains.
47 parts · 6 BOM lines
Railway Bogie
The pivoting frame under a rail vehicle that carries two wheelsets, the primary and secondary suspension, and the friction brakes, steering through curves as it transfers the carbody load to the track.
158 parts · 9 BOM lines
Railway Color-Light Signal
A trackside aspect signal that shows trains red, yellow, or green light indications from LED heads on a mast, driven and proved by interlocking-controlled electronics.
134 parts · 7 BOM lines
Railway Handcar
Human-powered rail vehicle using a walking-beam pump handle drive, gear transmission, flanged wheels, and open platform frame.
84 parts · 7 BOM lines
Railway Lifting Jack Set
A set of synchronized screw-driven jacks with manual or motor control and leveling governors, lifting entire locomotive or car for wheel removal and maintenance.
74 parts · 6 BOM lines
Railway Point Machine
An electrically actuated switch machine that moves railway points to change the direction of trains between track branches.
51 parts · 7 BOM lines
Railway Tank Wagon
A freight wagon built around a welded pressure-tight steel barrel for carrying liquids, gases, or powders, with bottom and top valve gear, two bogies, and a UIC air brake.
114 parts · 7 BOM lines
Railway Turntable
A rotating bridge platform supporting a railway locomotive or coach on a circular rail, driven by electric motors for directional positioning.
130 parts · 7 BOM lines
Refrigerated Railcar
A thermally insulated rail freight car with a refrigeration unit, genset, fuel tank, and air circulation for perishable cargo.
149 parts · 8 BOM lines
Rotary Snowplow Train
Rail vehicle with a spinning auger to clear deep snow from tracks.
193 parts · 9 BOM lines
Rubber-Tyred Metro Car
A self-propelled metro car that rolls on pneumatic rubber running tires over flat concrete or steel rolling ways, is steered by horizontal guide tires pressing against side guide bars, and retains conventional steel safety wheels riding on steel flange-ways as a fallback.
3,067 parts · 10 BOM lines
School Bus
A body-on-frame Type C school bus: diesel driveline, leaf-sprung axles, air brakes, a steel body shell with bench seats, and the safety gear, stop arm, flashing lights, and emergency exits.
385 parts · 15 BOM lines
Shunting Locomotive
A diesel-electric shunting (switcher) locomotive for yard and depot work.
642 parts · 14 BOM lines
Sleeper Car
Railway carriage with private berths for overnight passenger travel.
253 parts · 10 BOM lines
Sleeper Laying Machine
Rail-mounted gantry crane automatically extracting concrete sleepers from magazine, aligning them transversely and lowering onto prepared ballast bed.
41 parts · 6 BOM lines
Snow Clearing Train (Rotary Plow)
A self-propelled rotary snow plough that cuts into deep drifted snow with a powered auger and impeller, then throws the snow clear of the track through a discharge chute.
505 parts · 9 BOM lines
Steam Locomotive
Coal- or oil-fired locomotive driven by reciprocating steam pistons.
951 parts · 10 BOM lines
Switch & Crossing Tamper
Specialized tamping machine for railway switches and crossings with independent split tamping units, lifting cylinders, and integrated measuring system.
51 parts · 6 BOM lines
Switch Point Heater
A rail-mounted heating system with electric or gas elements, control cabinet, and snow-load sensors preventing ice accumulation on switch points.
53 parts · 7 BOM lines
Track Geometry Car
A measurement-equipped railway vehicle carrying laser, camera and sensor systems to monitor track alignment, profile and ride quality.
122 parts · 7 BOM lines
Track Laying Machine
A self-propelled rail-mounted factory that lays new track ahead of itself, feeding sleepers from material wagons by gantry crane, placing them at gauge spacing, and threading the rails onto them in one continuous pass.
371 parts · 8 BOM lines
Traction Transformer
On-board transformer stepping catenary voltage down for rail traction converters.
4,404 parts · 9 BOM lines
Train Wash Plant
A stationary drive-through facility with brush gantries, detergent and water systems, recycling circuit, and automated controls for locomotive and car cleaning.
60 parts · 8 BOM lines
Tram
A low-floor articulated light-rail tram.
705 parts · 14 BOM lines
Transit Bus
Low-floor urban bus for high-frequency city passenger service.
519 parts · 9 BOM lines
Trolleybus
Electric city bus drawing power from overhead wires via trolley poles.
280 parts · 9 BOM lines
Ultrasonic Rail Test Trolley
A mobile inspection system with ultrasonic probe wheels, couplant delivery, instrumentation cabinet, and recording unit detecting internal rail defects.
50 parts · 8 BOM lines
Underfloor Wheel Lathe
A pit-mounted turning machine with cutting spindle, friction rollers, measuring system, and lifting carriage restoring wheel roundness in situ.
62 parts · 8 BOM lines
Wayside Rail Lubricator
A trackside dispenser applying lubricating grease to the rail head when passing train wheels trigger the applicator.
56 parts · 6 BOM lines
Shared component references 12
Components ranked by how many of the 99 recorded product BOMs reference the same page, directly or through a sub-assembly. A shared reference does not establish replacement-part compatibility.
- Fastener Set in 80 of 99 productsBolts, nuts, and washers.
- Ball Bearing in 73 of 99 productsDeep-groove radial ball bearing.
- Bare PCB in 59 of 99 productsUnpopulated printed circuit board: copper traces etched on an FR-4 glass-epoxy laminate that carry current between the components later soldered to it.
- Microcontroller in 59 of 99 productsSingle-chip microcontroller combining a processor core, flash memory, RAM, and peripherals such as timers, ADCs, and serial ports to run the device's control firmware.
- O-Ring Set in 56 of 99 productsSet of elastomer rings seated in grooves to seal static or slow-moving joints against fluid and gas, sized to ISO 3601.
- Connector in 54 of 99 productsMating plug-and-socket pair that joins two lengths of wiring or a cable to a board so a circuit can be assembled, serviced, and separated without soldering.
- Relay in 54 of 99 productsElectromechanical switch in which a small coil current closes or opens contacts rated for a much larger load, isolating control circuits from what they switch.
- Pressure Sensor in 53 of 99 productsTransduces fluid or gas pressure into an electrical signal.
- Helical Gear Pair in 52 of 99 productsTwo meshing helical gears forming one reduction stage that steps torque up and speed down between parallel shafts with quiet, continuous tooth contact.
- Oil Seal in 52 of 99 productsSpring-loaded rotary lip seal that keeps lubricant inside a housing and dirt out where a shaft passes through, sized to DIN 3760.
- Coil Spring in 49 of 99 productsHelical spring of round steel wire that stores energy in compression or extension, used for suspension, return force, and preload.
- Wire Bundle in 49 of 99 productsGroup of insulated conductors cut to length, terminated, and bound together to carry power and signals between the assemblies of a machine.