Threaded Fasteners
Threaded joints and fastener load paths.
View drawing →← All engineering illustrations
Mechanical Engineering Illustrated
Explore 50 labeled drawings of real mechanical components, machines and systems, from bearings and gearboxes to pumps, heat exchangers, HVAC equipment and manufacturing tools.
Public thumbnails · Full-size access with All-Access. View pass options
Machine Components & Assemblies
Fasteners, bearings, seals, shaft alignment and gearbox lubrication.
Keys Splines and Couplings
Shaft keys, splines and flexible couplings.
View drawing →Springs
Compression, extension, torsion and leaf springs.
View drawing →Rolling Element Bearings
Rolling bearings, races and load directions.
View drawing →Plain Bearings
Plain bearing construction and lubrication.
View drawing →Seals and Gaskets
Static gaskets and rotary shaft seals.
View drawing →Shaft Alignment
Angular and parallel misalignment in coupled machines.
View drawing →Gearbox Lubrication
Oil delivery and lubrication inside a gearbox.
View drawing →Mechanisms & Power Transmission
Cams, indexing drives, gears, belts, chains, clutches and brakes.
Linear and Rotary Motion Conversion
Rack-and-pinion motion and machine-drive applications.
View drawing →Cam and Follower
Cam profiles and follower movement.
View drawing →Geneva Mechanism
Intermittent motion using a Geneva drive.
View drawing →Helical and Bevel Gears
Helical and bevel gear assemblies.
View drawing →Worm Gear Drive
Worm-and-wheel reduction gear cutaway.
View drawing →Belt Drives
Pulley geometry, belt tension and power transmission.
View drawing →Chain Drives
Sprockets, chain engagement and drive layouts.
View drawing →Clutches and Brakes
Clutch and brake assemblies for rotating machines.
View drawing →Pumps, Valves & Piping
Pump cutaways, flow meters, valves, fittings, expansion and installation.
Flow Measurement
Orifice, turbine and electromagnetic flow meters.
View drawing →Cavitation
Pump cavitation, local pressure and impeller damage.
View drawing →Centrifugal Pump Components
Centrifugal pump casing, impeller, shaft and seals.
View drawing →Positive Displacement Pumps
Reciprocating and rotary positive displacement pumps.
View drawing →Common Valve Types
Gate, globe, ball and butterfly valve cutaways.
View drawing →Pipe Fittings and Supports
Pipe fittings, supports and guided pipe runs.
View drawing →Thermal Expansion in Piping
Expansion loops, anchors and movement in piping.
View drawing →Pump Installation and Maintenance
Pump installation, alignment and maintenance access.
View drawing →Thermal & Energy Systems
Steam and gas cycles, refrigeration, insulation and heat exchangers.
Rankine Cycle
Steam boiler, turbine, condenser and feedwater pump.
View drawing →Brayton Cycle
Compressor, combustion chamber and gas turbine.
View drawing →Refrigeration Cycle
Compressor, condenser, expansion valve and evaporator.
View drawing →Insulation and Heat Loss
Insulated piping and radial heat loss.
View drawing →Shell and Tube Heat Exchanger
Shell-and-tube heat exchanger internals and flow paths.
View drawing →Plate Heat Exchanger
Plate heat exchanger channels and gasket arrangement.
View drawing →Extended Surfaces
Fins and extended heat-transfer surfaces.
View drawing →HVAC & Equipment Rooms
Air handling, ductwork, hydronic circuits, chillers and heat pumps.
Air Handling Unit
Air handling unit filters, coils, fan and dampers.
View drawing →Duct Distribution
Supply and return duct branches with air terminals.
View drawing →Hydronic Heating and Cooling
Hydronic heating and cooling circuits and terminal units.
View drawing →Chiller and Cooling Tower
Chiller, cooling tower and condenser-water connections.
View drawing →Heat Pump Operation
Heating and cooling modes of a reversible heat pump.
View drawing →Ventilation and Exhaust
Supply ventilation and exhaust through a building.
View drawing →Equipment Room Plan
Mechanical equipment room layout and service clearances.
View drawing →Manufacturing Equipment & Processes
Casting, forging, rolling, turning, milling and sheet-metal tooling.
Casting
Casting mold, molten metal and finished component.
View drawing →Forging
Open-die and closed-die forging operations.
View drawing →Rolling and Extrusion
Rolling stands and extrusion tooling.
View drawing →Turning
Lathe turning, tool movement and workholding.
View drawing →Milling
Milling machine, cutter paths and workpiece fixtures.
View drawing →Sheet Metal Forming
Sheet-metal bending, punching and blanking dies.
View drawing →Instrumentation, Actuation & Safety
Measuring instruments, sensors, pneumatic and hydraulic actuation, robots and guarding.
Measurement Instruments
Calipers, micrometers, dial indicators and measuring equipment.
View drawing →Sensors and Transducers
Industrial pressure, flow, temperature and position sensors.
View drawing →Pneumatic Actuation
Compressed-air preparation, valve and cylinder connections.
View drawing →Hydraulic Actuation
Hydraulic power unit, directional valve and cylinder.
View drawing →Industrial Robot Axes
Industrial robot axes, joints and working envelope.
View drawing →Machine Guarding
Fixed guards, interlocks and machine safety boundaries.
View drawing →What the illustrations show
These selected cutaways, equipment views and connected-system diagrams show how mechanical hardware fits together and operates. The selection emphasizes recognizable physical equipment and practical system relationships rather than standalone equation sheets.
Browse machine assemblies, motion and power transmission, pumps and piping, thermal and energy systems, HVAC and equipment rooms, manufacturing processes, instrumentation, pneumatic and hydraulic actuation, robotics and machine guarding.
How to read the drawings
Choose a subject, then open a drawing for its description and full-size viewer. Thumbnails show the composition; use the unlocked image to inspect labels and fine lines. Full-size drawings preserve the original detail so you can inspect labels and fine lines.
Frequently asked questions
What is included in the Mechanical Engineering Illustrated collection?
Labeled reference illustrations. Browse machine assemblies, motion and power transmission, pumps and piping, thermal and energy systems, HVAC and equipment rooms, manufacturing processes, instrumentation, pneumatic and hydraulic actuation, robotics and machine guarding.
Are full-size illustrations free?
Thumbnails are free to browse. Your All-Access Pass unlocks the full-size drawings.
Can I view the drawings on a phone?
Yes. The gallery is designed for desktop computers, phones and tablets.
Can these drawings be used as construction documents?
No. These are educational reference illustrations, not construction documents or verified project designs. Confirm calculations, dimensions, member selections and code requirements with an appropriately qualified professional before real work.
Educational reference only. Illustrations are conceptual and may simplify real construction. They do not certify calculations or replace project documents, applicable standards or professional review.