Power tools

How I removed the rotor (armature) and other bearings from the Metabo WE 9-125 Quick angle grinder.
Parts drawing:
https://www.bikegremlin.com/wp-content/uploads/2025/12/metabo-we-9-125-quick-parts.png
Front rotor bearing:
8 x 22 x 7 mm
Rear rotor bearing:
6 x 19 x 6 mm
The plastic assembly – Metabo says:
No longer available, no replacement
17 343373420

How I removed the rotor (armature) bearing from the Milwaukee HD18AG125 angle grinder.
Bearing dimensions: 12x28x8 mm; Model: 6001 Z
id: 1272

Universal review disclaimer by BikeGremlin – exposing how modern services and products use fake upgrades and lock-ins to keep you spending. Modern products and services, fake upgrades, and the myth of future-proofing.
Bosch ProCore+ (tabless) batteries briefly discussed.
id: 1266

🔧 Which drill should you buy first for DIY and home repairs? This beginner-friendly guide explains the 3 main types of drills, when to use them, and which one is best to start with: “normal” vs hammer drill vs impact wrench.

Power Tools 101 Series:

• The 4 Power Tool Classes Explained
• Power tool enery source pros and cons
• How do impact wrenches work?
• Best first drill?

What kind of energy sources are common for power tools?
Petrol vs pneumatic vs electric (corded and cordless – battery-run): what are the pros and cons of each?

Power Tools 101 Series:

• The 4 Power Tool Classes Explained
• Power tool enery source pros and cons
• How do impact wrenches work?
• Best first drill?

🔧 How exactly do impact wrenches (and impact screwdrivers) work – compared to ordinary drills? This video explains the working principles of both types of tools, including torque, levers, gear ratios, and kinetic energy – all shown with real examples.

Power Tools 101 Series:

• The 4 Power Tool Classes Explained
• Power tool enery source pros and cons
• How do impact wrenches work?
• Best first drill?

I’ve been using Metabo BS 200 Plus bench grinder for a few weeks and these are my impressions – quality, how it’s assembled, used, how to replace the stone and belt etc.

BikeGremlin forum thread related to this video:
https://www.bikegremlin.net/threads/metabo-bs-200-plus-bench-grinder-review.438/

In this video, I’m diving into the top three tools that turned out to be game-changers in ways I never anticipated. These tools were originally intended (and bought) as ‘nice-to-haves’ in my toolkit, but they quickly became “can’t-live-withouts.” Whether you’re into cycling, mechanics, or just love discovering versatile, reliable tools, these picks might just surprise you as much as they did me! Stick around to see why these tools have earned their place in my workshop—and why they might deserve a spot in yours too!
Bosch GAS 18V-10 L (cordless vacuum cleaner)
Unior 1613/2BI (pedal wrench)
Bosch GDS 18V-400 (cordless impact wrench)
Hyndai SAC 55751 (silent compressor)

Some general tips & advice about compressor shopping and maintenance.
And my review of the Hyundai SAC 55751 silent (59db) compressor.

The 4 basic quality classes of power tools explained. Are the “hobby” class power tools worth buying?

Power Tools 101 Series:

• The 4 Power Tool Classes Explained
• Power tool enery source pros and cons
• How do impact wrenches work?
• Best first drill?

My experience with the Dremel 4486 Keyless Chuck (on a Parkside tool)

Why Dremel EZ SpeedClic and 4486 Keyless Multi Chuck are awesome – and a review of the Parkside rotary tool

How I’ve added a bearing to improve my Parkside rotary (“Dremel”) tool – reducing the vibrations.

Parkside rotary tool (“Dremel”) presentation and a short review