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Sports & Fitness parts lists

BOMwiki maps 40 sports & fitness products, each exploded into a recursive bill of materials: 3,504 parts in total, down to individual fasteners and cells. The largest is the curved manual treadmill at 411 parts across 8 top-level assemblies; the simplest is the weightlifting platform at 21. Across the domain the same components recur: fastener set, ball bearing, microcontroller and LCD panel appear in most of these machines, and each is a single shared page here, so a correction to one fixes every product that uses it. Open any product for its parts diagram, the function of each part, and the full bill of materials.

40 sports & fitness products

Adjustable Dumbbell A dial-select dumbbell that picks up only the weight plates matching the chosen setting, replacing a rack of 10–15 fixed dumbbells. 113 parts · 6 subsystems

Adjustable Kettlebell A kettlebell whose handle-and-core unit selectively locks to a set of nested weight shells, giving 5–6 weights in one bell. 47 parts · 6 subsystems

Adjustable Weight Bench A flat/incline/decline strength-training bench whose back pad pivots on a ladder-and-catch mechanism to lock at multiple angles. 38 parts · 7 subsystems

Air Assault Bike A fan bike: pedaling and pushing the moving handlebars spin a large air fan through a belt drive, so resistance climbs with effort, while a battery console tracks cadence and calories. 115 parts · 8 subsystems

Anti-Gravity Treadmill A rehabilitation treadmill that encloses the runner’s lower body in a pressurized air chamber, unweighting them by up to 80% of body weight using differential air pressure. 96 parts · 9 subsystems

Baseball Pitching Machine A two-wheel training machine that grips a baseball between counter-rotating urethane wheels and throws it at a set speed and spin, with a ball feeder, electronic speed control, and an adjustable tripod head. 144 parts · 9 subsystems

Belt Squat Machine A squat machine that loads the hips through a belt instead of the spine, using a lever arm or pulley system to route plate weight beneath a standing platform. 49 parts · 8 subsystems

Boxing Ring An elevated, roped platform used for boxing matches and training, with resilient floor, rope perimeter, and corner padding for safety. 78 parts · 7 subsystems

Cable Crossover Machine Dual-stack functional trainer with two adjustable, height-settable pulley columns and a chin-up bar. 117 parts · 10 subsystems

Cable Functional Trainer A dual-stack cable machine with independently-adjustable pulleys at multiple heights, enabling hundreds of variable-angle exercises using interchangeable cable attachments. 95 parts · 7 subsystems

Climbing Auto-Belay A wall-mounted device that takes up a climber’s slack on a retracting webbing line and, on a fall, lowers them at a controlled speed using a magnetic eddy-current brake with no friction parts or user input. 49 parts · 7 subsystems

Climbing Ladder Ergometer A rotating ladder-rung climb simulator where the user pushes a series of rungs downward; the belt loops continuously and the user must keep pace or slip backward, creating an infinitely scalable resistance. 136 parts · 8 subsystems

Curved Manual Treadmill A motorless treadmill whose concave slat belt is driven by the runner’s own footstrike: stepping onto the front of the curve pushes the belt rearward, with speed set entirely by foot placement and an optional magnetic brake adding resistance. 411 parts · 8 subsystems

Elliptical Trainer Front-drive elliptical cross-trainer with motorized incline, magnetic eddy-current resistance, moving and static handlebars, and a console. 111 parts · 8 subsystems

Exercise Bike A smart indoor spin bike with a heavy flywheel, electronically controlled magnetic resistance, and a touchscreen console for guided rides. 93 parts · 10 subsystems

Glute-Ham Developer A posterior-chain bench (GHD) that clamps the ankles between rollers and a footplate so the user can perform glute-ham raises, back extensions, and GHD sit-ups over a split hip pad. 41 parts · 7 subsystems

Hack Squat Machine A plate-loaded squat machine: the user stands on a footplate under angled shoulder pads and drives a sled up two inclined rails on linear bearings, with spring-assisted catches handling the rack and release. 61 parts · 6 subsystems

Hydraulic Circuit Trainer A manual-pump hydraulic resistance trainer where fluid flow through adjustable valves creates smooth load, with no motors or electronics. 61 parts · 8 subsystems

Inversion Table A pivoting bench that rotates a strapped-in user past horizontal to hang head-down by the ankles, using body geometry as the balance control and a tether to limit the inversion angle. 42 parts · 7 subsystems

Lat Pulldown Machine A selectorized cable machine: a seated user pulls a wide bar down against a guided weight stack, with the load routed through a pulley train and the thighs braced by an adjustable hold-down pad. 58 parts · 7 subsystems

Leg Press Machine A 45-degree plate-loaded leg press: a welded steel frame carries an angled sled on linear guides, loaded with weight plates on horns and stopped by spring-loaded safety catches. 54 parts · 7 subsystems

Mini Stair Stepper A compact floor-standing stepper whose two pedals alternate against hydraulic cylinder resistance, with optional resistance bands for the upper body. 56 parts · 6 subsystems

Multi-Station Home Gym A cable-driven selectorized home gym with a stacked weight plate column feeding multiple training stations through a pulley-and-cable network. 105 parts · 11 subsystems

Outdoor Gym Station A fixed public-park exercise station made of galvanized steel with pivot-hinged arms and body-weight resistance, designed for durability in outdoor weather. 129 parts · 7 subsystems

Pec Deck Machine A selectorized chest machine: the user presses two padded arms together, each swinging on a pivot bearing, and a cam routes the motion through a cable to a guided weight stack so the load stays even across the arc. 63 parts · 6 subsystems

Percussion Massage Gun A handheld percussive therapy device in which a brushless motor drives an eccentric cam that reciprocates a piston-mounted head 10-16 mm into soft tissue at 1,200-3,200 strokes per minute. 71 parts · 8 subsystems

Pilates Reformer A sliding-carriage exercise apparatus in which the user pushes or pulls a wheeled platform against selectable spring resistance along frame rails. 73 parts · 8 subsystems

Pneumatic Resistance Machine A single-joint or multi-joint exercise machine whose resistance comes from air cylinders, providing load-independent force that scales with user speed and input pressure. 52 parts · 7 subsystems

Power Rack A 4-post squat/power rack with bolt-on strength-training attachments. 88 parts · 12 subsystems

Push Sled A flat sled that slides on rails, loaded with weight plates, which the user pushes across a gym floor for power and conditioning drills. 42 parts · 6 subsystems

Rotating Climbing Wall A treadmill-like climbing device where a continuously rotating vertical panel loop presents an infinite sequence of climbing holds at variable speed and angle. 190 parts · 8 subsystems

Rowing Machine An air-resistance indoor rower with a flywheel fan unit, sliding seat, and a battery-powered performance monitor. 60 parts · 8 subsystems

Ski Ergometer A vertical air-resistance ergometer that simulates Nordic ski double-poling: pulling two cord-mounted handles downward spins a damped flywheel through one-way clutches while a performance monitor computes power from flywheel deceleration. 43 parts · 7 subsystems

Smart Fitness Mirror A wall- or stand-mounted fitness mirror: an LCD panel behind two-way mirror glass, with a camera for form tracking, a speaker array, and a touch overlay. 36 parts · 10 subsystems

Smith Machine A guided barbell trainer: a fixed bar runs on two vertical steel rails through linear bearings, with rotating hook catches for racking, a cable-and-pulley counterbalance, and weight pegs for Olympic plates. 80 parts · 7 subsystems

Stair Climber A commercial revolving-staircase stepmill with motorized step belt and self-powered resistance. 128 parts · 11 subsystems

Treadmill A motorized folding treadmill with a cushioned running deck, motor-driven incline, and a touchscreen console. 122 parts · 11 subsystems

Vertical Climber A stair-climbing machine with two independently moving foot platforms and sliding arm rails, driven by a cable-and-pulley linkage to raise the user vertically without jumping. 59 parts · 7 subsystems

Vibration Plate A whole-body vibration platform: a motor-driven eccentric oscillator shakes the top plate on spring isolators, with a control panel and resistance bands. 77 parts · 10 subsystems

Weightlifting Platform An elevated training platform with rubber surfacing and marked zones, designed for dropping loaded barbells and performing Olympic lifts without damaging the underlying floor. 21 parts · 5 subsystems

Parts common across sports & fitness 12

Shared components ranked by how many of the 40 products in this domain contain them, directly or inside a sub-assembly.

Fastener Set in 40 of 40 productsBolts, nuts, and washers.
Ball Bearing in 28 of 40 productsDeep-groove radial ball bearing.
Microcontroller in 17 of 40 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.
LCD Panel in 15 of 40 productsLiquid-crystal display module with backlight and driver electronics that shows the machine's readouts, menus, and status to the operator.
Bare PCB in 14 of 40 productsUnpopulated printed circuit board: copper traces etched on an FR-4 glass-epoxy laminate that carry current between the components later soldered to it.
Coil Spring in 13 of 40 productsHelical spring of round steel wire that stores energy in compression or extension, used for suspension, return force, and preload.
Neodymium Magnet in 13 of 40 productsSintered neodymium-iron-boron permanent magnet, the strongest commercial magnet type, used for motor rotors, sensors, latches, and speakers.
Connector in 11 of 40 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.
Wire Bundle in 11 of 40 productsGroup of insulated conductors cut to length, terminated, and bound together to carry power and signals between the assemblies of a machine.
Copper Winding in 8 of 40 productsInsulated copper conductor wound into coils that carry the phase current and create the magnetic field in a motor, generator, or transformer.
Power Supply in 8 of 40 productsUnit that converts mains or battery input into the regulated DC voltages a machine's electronics and actuators need.
Rotor Assembly in 8 of 40 productsRotating member of an electric motor: a laminated steel core carrying permanent magnets or conductor bars, pressed onto a shaft that delivers the torque.