Machinery & Equipment Industry Terminology

Additive Manufacturing

Layer-by-layer fabrication of parts (often via 3D printing) in metals, polymers, or composites; used for prototypes, tooling, and production with complex geometries and reduced waste.

Print a conformal-cooled injection mold insert; Consolidate a multi-piece bracket into one printed part; Produce on-demand spare parts to shorten downtime.

Aftermarket

The market for replacement parts, consumables, upgrades, and services sold after the original equipment sale; a major profit center for machinery OEMs.

Launch a parts subscription for the installed base; Offer a retrofit kit to extend machine life; Grow aftermarket revenue via predictive parts stocking.

Automation

Use of control systems, robotics, and software to execute tasks with minimal human intervention, improving throughput, quality, and safety.

Automate palletizing with a cobot cell; Add vision-guided pick-and-place; Use AGVs to automate intralogistics.

Bill of Materials (BOM)

Hierarchical list of all components, subassemblies, raw materials, and quantities needed to build a product; drives procurement, costing, and planning.

Release an engineering BOM with ECO-123; Reconcile manufacturing vs engineering BOM; Use the BOM to run MRP for next month’s builds.

Build-to-Order (BTO)

Production starts only after receiving a customer order; reduces finished-goods inventory but requires flexible operations and supply.

Configure compressors BTO with customer-specific motors; Promise BTO lead time of four weeks; Align BTO with supplier kanban levels.

CMMS (Computerized Maintenance Management System)

Software to plan, schedule, and record maintenance activities, assets, spares, and work orders.

Trigger a PM in the CMMS based on run hours; Analyze CMMS history for chronic failures; Auto-replenish spares when CMMS hits min levels.

CNC (Computer Numerical Control)

Automated control of machine tools via programmed instructions (e.g., G-code) for milling, turning, grinding, etc.

Post-process CAM to CNC G-code; Hold 10-micron tolerances on a CNC grinder; Run lights-out machining over the weekend.

Cobots (Collaborative Robots)

Robots designed to safely work alongside humans with force/torque limits and sensing; ideal for flexible, small-batch tasks.

Deploy a cobot for screwdriving on Line 3; Re-task the cobot between SKUs daily; Use a cobot with vision for bin picking.

Design for Manufacturability (DFM)

Engineering practice of designing parts and assemblies to be easy, cost-effective, and reliable to produce and assemble.

Reduce fasteners for better DFM; Increase draft angles to aid molding; Standardize hole sizes to match available tooling.

Digital Twin

High-fidelity virtual model of a physical asset, line, or plant synchronized with real data for simulation, optimization, and diagnostics.

Validate a new conveyor layout in the digital twin; Simulate cycle time impacts before a line change; Compare twin predictions to SCADA data.

EAM (Enterprise Asset Management)

Enterprise approach and software for managing asset lifecycle, maintenance, reliability, and performance across sites.

Consolidate plant CMMS into a single EAM; Track asset criticality in EAM for risk-based maintenance; Audit compliance through EAM records.

EOAT (End-of-Arm Tooling)

Grippers, weld guns, suction cups, and tools attached to a robot arm that interact with parts.

Swap EOAT via quick-change couplers; Design EOAT to handle mixed geometries; Add sensors to EOAT for part presence.

ERP (Enterprise Resource Planning)

Integrated system for finance, inventory, MRP, production planning, purchasing, and order management.

Run MRP in ERP to plan next quarter; Backflush components at completion; Link ERP and MES for real-time WIP.

FEA (Finite Element Analysis)

Numerical simulation method to predict stresses, deformation, heat transfer, and vibration in designs.

Use FEA to validate gearbox housing thickness; Run thermal FEA on a spindle; Correlate FEA to strain gauge tests.

FMEA (Failure Mode and Effects Analysis)

Structured risk assessment to identify failure modes, effects, causes, and mitigations; prioritizes actions via Risk Priority Number (RPN).

Conduct design FMEA for a new actuator; Update process FMEA after a quality spill; Lower RPN by adding error-proofing.

G-code

Programming language used to control CNC machine tool movements, speeds, and functions.

Edit G-code to adjust feed rate; Insert a tool change M6 command; Verify G-code in a digital dry run.

HMI (Human-Machine Interface)

Screens and devices through which operators monitor and control machines or processes.

Build a new HMI for the packing line; Add alarm banners to the HMI; Localize HMI screens for the Mexico plant.

IIoT (Industrial Internet of Things)

Network of connected industrial devices, sensors, and platforms that collect and analyze data to improve performance.

Stream vibration data via IIoT gateways; Use IIoT dashboards for energy monitoring; Push OTA firmware updates to drives.

ISO 9001

International standard for quality management systems focused on consistent processes and continual improvement.

Prepare for ISO 9001 surveillance audit; Map procedures to ISO 9001 clauses; Train supervisors on nonconformity handling.

Just-in-Time (JIT)

Lean principle of producing and delivering only what is needed, when needed, in the exact quantity required.

Convert bulk deliveries to JIT kanban; Cut WIP by implementing JIT supermarkets; Align JIT with supplier milk runs.

Kaizen

Continuous, incremental improvement driven by employees to eliminate waste and enhance processes.

Run a kaizen on setup reduction; Post kaizen results on the obeya board; Track kaizen savings in the PMO.

Kanban

Visual pull system using signals (cards, bins, electronic) to trigger replenishment and control flow.

Size kanban loops for bearings; Switch to e-kanban with barcode scans; Audit kanban FIFO lanes weekly.

Lead Time

Total elapsed time from order to delivery, including processing, queue, transport, and wait times.

Map current-state lead time with VSM; Promise a 10-day lead time for MTO units; Reduce lead time by co-locating subassembly.

Lean Manufacturing

Management system focused on maximizing value and minimizing waste through flow, pull, and continuous improvement.

Implement 5S as part of Lean; Balance the line to takt in Lean deployment; Use A3 problem solving in Lean events.

MES (Manufacturing Execution System)

Software that manages and tracks production in real time: orders, WIP, genealogy, quality, and performance.

Dispatch work orders via MES; Enforce electronic work instructions; Collect OEE automatically through MES.

MTBF (Mean Time Between Failures)

Reliability metric indicating average operating time between inherent failures for repairable assets.

Increase pump MTBF with better filtration; Compare MTBF across machine models; Use MTBF to inform spares stocking.

MTTR (Mean Time To Repair)

Average time required to diagnose, fix, and restore an asset after failure.

Lower MTTR with modular components; Track MTTR by technician in CMMS; Stage tools near the cell to reduce MTTR.

NDT (Non-Destructive Testing)

Inspection methods (e.g., UT, MT, PT, RT, ET) that evaluate integrity without damaging the part.

Perform ultrasonic NDT on welds; Specify dye penetrant for casting cracks; Qualify inspectors to Level II NDT.

OEE (Overall Equipment Effectiveness)

Composite metric of availability x performance x quality to quantify productive manufacturing time.

Raise OEE by cutting micro-stops; Review OEE losses in the daily tier meeting; Benchmark OEE across lines.

OEM (Original Equipment Manufacturer)

Company that designs and builds machinery or equipment, or supplies branded components to integrators/end users.

Negotiate warranty with the OEM; Use OEM-certified parts only; Co-develop a new skid with the OEM.

P&ID (Piping and Instrumentation Diagram)

Detailed schematic showing process equipment, piping, valves, instruments, and control loops.

Update the P&ID after a pump swap; Use the P&ID to plan tie-ins; Verify interlocks per the P&ID.

PLC (Programmable Logic Controller)

Ruggedized industrial computer used to automate machinery and processes via ladder logic or structured text.

Add a PLC routine for safety interlocks; Migrate from legacy PLCs to modern PACs; Simulate PLC logic before commissioning.

Predictive Maintenance (PdM)

Data-driven maintenance using condition monitoring and analytics to predict failures before they occur.

Schedule PdM based on vibration anomalies; Use ML models to flag bearing faults; Integrate PdM alerts into the CMMS.

QMS (Quality Management System)

Organizational framework, processes, and documentation to ensure products meet requirements and improve over time.

Control documents in the QMS; Capture nonconformances and CAPAs; Audit suppliers against our QMS.

Quality Control (QC)

Operational techniques and activities used to fulfill quality requirements, including inspection, testing, and acceptance.

Set incoming QC sampling plans; Run final QC on torque specs; Issue a QC hold on suspect lots.

Retrofit

Upgrading existing equipment with new components, controls, or capabilities to extend life or performance.

Retrofit VFDs on legacy fans; Add vision inspection as a retrofit; Retrofit CNC controllers to reduce downtime.

Root Cause Analysis (RCA)

Systematic method to identify the underlying cause of a problem to prevent recurrence.

Use 5 Whys in an RCA after a scrap spike; Build a fishbone diagram for an RCA; Verify RCA effectiveness with control charts.

SCADA (Supervisory Control and Data Acquisition)

Systems that supervise, monitor, and control industrial processes over networks, aggregating data from PLCs and RTUs.

Trend pressures in SCADA; Configure SCADA alarms; Send SCADA data to the historian.

Six Sigma

Data-driven methodology to reduce process variation and defects using DMAIC/DMADV and statistical tools.

Launch a Six Sigma project on yield; Train belts on hypothesis testing; Use DOE to meet Six Sigma targets.

Statistical Process Control (SPC)

Use of control charts and statistics to monitor process stability and capability in real time.

Implement SPC on critical dimensions; React to out-of-control points per SOP; Calculate Cp/Cpk monthly.

Takt Time

The pace of production needed to meet customer demand, calculated as available time divided by demand.

Rebalance stations to meet takt; Display takt vs actual on the Andon; Adjust staffing when takt changes.

Total Cost of Ownership (TCO)

Holistic cost of acquiring, operating, maintaining, and disposing of equipment over its lifecycle.

Compare robots vs gantry on TCO; Include energy and downtime in TCO models; Use TCO in capex justification.

Total Productive Maintenance (TPM)

Company-wide approach to maximize equipment effectiveness through autonomous and planned maintenance, training, and loss elimination.

Start TPM with 5S and autonomous maintenance; Track losses on a TPM pillar board; Certify operators in TPM basics.

Uptime

Percentage of time equipment is available and running when scheduled; often tracked by line or asset.

Improve uptime with better changeover SOPs; Publish uptime by cell daily; Link uptime targets to bonuses.

Value Stream Mapping (VSM)

Visual tool to map material and information flow from supplier to customer to identify waste and design a future state.

Facilitate a VSM workshop; Quantify lead time and process time in VSM; Build a future-state VSM with supermarkets.

Variable Frequency Drive (VFD)

Power electronics that control AC motor speed and torque by varying frequency and voltage; saves energy and improves control.

Add VFDs to pumps to cut energy use; Tune ramp rates to reduce water hammer; Network VFDs to the PLC over EtherNet/IP.

Work-in-Process (WIP)

Partially completed goods within the production system; a key driver of lead time and inventory carrying cost.

Cap WIP with kanban limits; Analyze WIP aging in MES; Reduce WIP via smaller batch sizes.

X-bar/R Chart

Paired control charts for monitoring process mean (X-bar) and range (R) for variable data in subgroups.

Build X-bar/R charts for shaft diameter; Investigate a point beyond control limits; Use X-bar/R to verify process stability.

Yield

Percentage of good units produced versus total units started; first-pass yield excludes rework.

Track first-pass yield by product family; Raise yield by improving fixturing; Include yield in OEE quality factor.

Zero Defects

Quality philosophy aiming for perfect products through prevention, error-proofing, and continual improvement rather than accepting defects.

Introduce poka-yoke for zero defects; Set stretch goal of zero defects on safety parts; Align supplier PPAP to a zero-defect mindset.