Guides

CNC Spares & Maintenance Guides

Expert advice on identifying, sourcing, and installing CNC spare parts for Fanuc, Siemens, Mazak, and Heidenhain machine tools.

Maintenance

CNC Encoder Failure: Position Errors and What to Replace

03 Jun 2026

Position drift, following errors, and homing failures — these are the classic signs of encoder trouble. Learn how to identify whether the fault is in the encoder, the cable, or the servo drive before ordering an expensive replacement.

Maintenance

CNC Power Supply Failure: Diagnose Before You Replace

03 Jun 2026

When your CNC won't power up or throws random alarms, the power supply is the prime suspect. This guide covers how to identify a failing power supply, isolate it from the rest of the control system, and match the right replacement — without getting hurt.

Buying Guide

CRT to LCD: Your CNC Screen Replacement Guide

03 Jun 2026

Is your CNC CRT dying? This guide covers how to identify a failing screen, compare CRT repair vs LCD replacement costs, check compatibility with your control, and safely install a modern LCD upgrade.

Maintenance

Your CNC Battery Is About to Die — Here's What to Do

19 May 2026

Which battery does what on your CNC machine, warning signs before failure, and how to replace them before you lose parameters, offsets, or absolute position.

Maintenance

Servo Drive Alarm? Don't Panic — Diagnose It First

19 May 2026

How to decode Fanuc, Siemens, and Mitsubishi servo amplifier alarms, isolate whether the fault is in the drive, motor, or cable, and avoid replacing the wrong component.

Fanuc

How to Identify and Replace a Faulty Fanuc Servo Drive

12 May 2026

Step-by-step guide to diagnosing servo drive failure symptoms on Fanuc controls, cross-referencing part numbers, and sourcing the correct replacement drive unit for your CNC machine tool.

Buying Guide

When to Replace vs Repair a CNC Spindle Drive — A Cost Comparison

02 May 2026

Should you repair a failed spindle drive or buy a replacement? We break down the costs, lead times, and reliability factors for Fanuc, Siemens, and Mitsubishi spindle drives in UK machine shops.

Fanuc

Fanuc CNC Parameter Backup Guide — Protect Your Machine Before It's Too Late

28 Apr 2026

Complete guide to backing up Fanuc CNC parameters, PMC ladder, and offsets before a control failure. Covers PCMCIA, RS-232 serial, and embedded Ethernet methods.

Siemens

Siemens Sinamics Drive Topology Faults — Quick Diagnosis Guide

15 Apr 2026

When a Siemens Sinamics S120 or S210 drive throws a topology fault, don't start swapping hardware. Follow this systematic approach to identify the root cause before ordering replacement parts.

Buying Guide

CNC Proximity Switch Buying Guide — PNP vs NPN, NO vs NC Explained

20 Mar 2026

Confused by proximity switch specifications? This guide explains the difference between PNP and NPN sensors, normally-open vs normally-closed, and how to match the right sensor to your CNC control system.

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