Home / Courses / CNC

CNC Maintenance Mastery

Keep the machines cutting.

A complete course in CNC machine maintenance: mechanical systems, electrical and control systems, spindles, drives and feedback, preventive and predictive maintenance, troubleshooting, repair and calibration.

45 chapters in 11 Parts30 deep-dive chapters100+ diagrams30+ photographs

Who it is for

Maintenance technicians who keep CNC machines running, and machinists or electricians moving into CNC maintenance.

What you will learn

  • Mechanical systems: linear motion, spindles, bearings, lubrication, hydraulics, pneumatics and counterbalance
  • Electrical and control systems: power quality, servo motors and drives, encoders, controllers, parameter backup and restore
  • Alarms and diagnostic screens, G-code for maintenance technicians, probing and tool management
  • Auxiliary systems: automatic tool changers, workholding, coolant, chip handling and guarding
  • Preventive and predictive maintenance programs, machine leveling and geometric alignment
  • A systematic troubleshooting method, then repair: ball screw replacement, crash recovery, vibration analysis and ballbar testing
  • Specialized machines: 5-axis, mill-turn, EDM, laser and plasma, grinding, waterjet and additive
  • Machine connectivity (MTConnect, OPC-UA, FOCAS), OEE and maintenance management

How the course works

  • Knowledge Check quizzes throughout the text
  • Quick-reference tables for the job floor
  • Read online on any device, with your place and answers saved to your account

Table of contents

Part 1 - Foundations8 chapters
  1. Ch 1What Is a CNC Machine?
  2. Ch 2Types of CNC Machines
  3. Ch 2ASwiss-Type CNC Lathes: Maintenance Deep Dive
  4. Ch 3CNC Machine Anatomy - The Complete Breakdown
  5. Ch 4Safety for CNC Maintenance
  6. Ch 4AFunctional Safety Engineering & Safety Circuit Validation
  7. Ch 4BRegulatory Compliance, Safety Audits & Insurance Requirements
  8. Ch 5Tools & Equipment for CNC Maintenance
Part 2 - Mechanical Systems9 chapters
  1. Ch 6Linear Motion Systems - Deep Dive
  2. Ch 6ACouplings, Support Bearings & Pitch Error Compensation
  3. Ch 7Spindle Systems - Maintenance & Diagnostics
  4. Ch 7ASpindle Rebuild & Repair Procedures
  5. Ch 8Bearings in CNC Machines
  6. Ch 9Lubrication Systems - Complete Guide
  7. Ch 10Hydraulic Systems in CNC Machines
  8. Ch 11Pneumatic Systems in CNC Machines
  9. Ch 12Counterbalance Systems
Part 3 - Electrical & Control Systems12 chapters
  1. Ch 13Electrical Fundamentals for CNC Machines
  2. Ch 13APLC/PMC Ladder Logic for CNC Diagnostics
  3. Ch 14Power Quality & Electrical Infrastructure
  4. Ch 15Servo Motors & Drives - Maintenance & Troubleshooting
  5. Ch 15AServo & Spindle Drive Component-Level Diagnosis
  6. Ch 15BServo Drive & Spindle Amplifier Replacement and Tuning
  7. Ch 16Encoders & Feedback Systems - Complete Guide
  8. Ch 17CNC Controllers - Understanding the Brain
  9. Ch 17AController Deep-Dive - Firmware, Networking & Advanced Diagnostics
  10. Ch 17BParameter Backup, Restore & Configuration Management
  11. Ch 17COEM Diagnostic Software & Boot/IPL Procedures
  12. Ch 18Electrical Cabinet Cooling & Environmental Control
Part 4 - CNC Software & Operation5 chapters
  1. Ch 19G-Code Fundamentals for Maintenance Technicians
  2. Ch 20Alarms, Error Codes & Diagnostic Screens
  3. Ch 20AAlarm Quick-Reference & Platform-Specific Diagnostics
  4. Ch 21Probing Systems - Setup, Calibration & Maintenance
  5. Ch 21ATool Presetters, RFID & Tool Data Management
Part 5 - Auxiliary Systems8 chapters
  1. Ch 22Automatic Tool Changer (ATC) Systems
  2. Ch 22AAutomatic Pallet Changers & FMS Automation Cells
  3. Ch 22BToolholders, Tapers & Retention Systems
  4. Ch 23Chuck, Workholding & Fixture Systems
  5. Ch 23ALathe Turrets, Tailstocks, Sub-Spindles & Steady Rests
  6. Ch 24Coolant System Maintenance & Troubleshooting
  7. Ch 25Chip Management & Conveyors
  8. Ch 26Way Covers, Sheet Metal & Guarding Systems
Part 6 - Preventive & Predictive Maintenance3 chapters
  1. Ch 27Preventive Maintenance Programs
  2. Ch 28Machine Leveling & Geometric Alignment
  3. Ch 29Predictive Maintenance Program Design
Part 7 - Troubleshooting6 chapters
  1. Ch 30Systematic Troubleshooting Methodology
  2. Ch 30ACross-System Diagnostics & Intermittent Fault Techniques
  3. Ch 30BRoot Cause Analysis & Failure Investigation
  4. Ch 31Mechanical Troubleshooting
  5. Ch 32Electrical Troubleshooting
  6. Ch 33Thermal Management & Compensation
Part 8 - Advanced Repair & Calibration4 chapters
  1. Ch 34Ball Screw Replacement
  2. Ch 35Crash Recovery Procedures
  3. Ch 36Vibration Analysis for CNC Machines
  4. Ch 37Ballbar Testing & Machine Calibration
Part 9 - Specialized Machine Maintenance10 chapters
  1. Ch 385-Axis & Multi-Axis Machine Maintenance
  2. Ch 38ARotary Tables, Trunnions & 4th/5th-Axis Indexers
  3. Ch 38BMulti-Tasking / Mill-Turn Centers (B-Axis Turning Centers)
  4. Ch 39EDM Machine Maintenance
  5. Ch 40Laser & Plasma Cutting Machine Maintenance
  6. Ch 40ACNC Grinding Machines: Cylindrical, Surface, Centerless & Jig Grinding
  7. Ch 40BGear Manufacturing Machines: Hobbing, Shaping, Skiving & Gear Grinding
  8. Ch 40CHorizontal Boring Mills & Large Gantry/Bridge Machines
  9. Ch 40DWaterjet & Abrasive Waterjet Systems
  10. Ch 40EAdditive & Hybrid Manufacturing (DED, LPBF, Hybrid CNC)
Part 10 - Networking & Industry 4.02 chapters
  1. Ch 41Networking, Communication & Industry 4.0
  2. Ch 41AMachine Connectivity: MTConnect, OPC-UA, FOCAS & Dashboards
Part 11 - Management, Documentation & Reference8 chapters
  1. Ch 42Machine Installation, Relocation & Decommissioning
  2. Ch 42AMachine Acceptance, Runoff & Warranty Management
  3. Ch 42BCNC Retrofit & Control Upgrade Engineering
  4. Ch 43Maintenance Logs & Documentation Best Practices
  5. Ch 43AOEE, Reliability KPIs & Maintenance Dashboards
  6. Ch 44Maintenance Department Management & Career Development
  7. Ch 44AOperator Partnership, TPM & Shift Handoffs
  8. Ch 45Troubleshooting Quick Reference Tables
Appendices1
  1. Terms & Acronyms