iFixit - Answers With Device "Angle Grinder"

Bosch Angle Grinder 1380SLIM 2011: la amoladora cuando presiono el boton de encendido no funciona

Tue, 14 Apr 2026 15:20:16 -0700

la amoladora no enciende

Makita Angle Grinder 9564 2014: Porqe se calienta mucho y rapido

Tue, 31 Mar 2026 11:51:18 -0700

Porque mi amoladora se calienta

Other Brand Angle Grinder: Lead shift ,Rewinding 24 bar 12 slot armature

Thu, 16 Apr 2026 05:30:06 -0700

I am rewinding an armature for an old-model metal-bodied Chinese mini angle grinder (approx. 700W-850W, 11,000-12,000 RPM).

Technical Specs:

- Core: 12 slots, 24 commutator bars.

- Dimensions: Core length 55mm, diameter 3.2cm.

- Wire: 32 AWG (0.20mm).

- Winding: Factory was 22 turns/coil (88 wires/slot total), but I plan to use 23 turns/coil (92 wires/slot) to improve torque and heat management.

- Pitch: 1 to 6.

- Progression: Retrogressive (1 -> 24 -> 23).

- Brushes: Positioned 90 degrees from the stator coils.

- Potting: Using two-part submersible pump epoxy (thinned with heat) in a vertical gravity-pour method.

The specific question is about the Lead Shift:

Because I am adding an extra turn (23 instead of 22) and the brushes are at 90 degrees, which lead shift is best to handle the high RPM and field twist?

1. Zero Shift (Bar 1 directly in center of Slot 1).

2. 7.5 Degree Shift (Mica directly in center of Slot 1).

3. 15 Degree Shift (Bar 24, one bar left, in center of Slot 1).

I am leaning toward the 7.5° (Mica Center) shift as a balance, but I'm worried about "fire-ringing" at 11,000 RPM. Has anyone done this specific 23-turn mod on these 12/24 armatures?

By ibot guess, the magnetic shift will ne around 18degree. I can't retrieve any original data of lead shift but from one saved coil, i get continuity from bar24 and 23, assuming first bar in center of slot is bar 1 and winding is retrogressive, connections moving left.

Bosch Angle Grinder 1380SLIM 2011: Why does my grinder not work sometimes wen I power it on

Fri, 10 Apr 2026 12:38:02 -0700

Sometimes grinder does not switch on wen I power it on

Other Brand Angle Grinder: How can I reduce the rpm of my grinder?

Tue, 24 Mar 2026 01:58:03 -0700

How can I reduce the rpm of my grinder?

⟐ Commented março 24, 2026 at 1:58 GMT-7

Bosch Angle Grinder 1380SLIM 2011: Why my grinder not power

Sat, 07 Mar 2026 05:18:10 -0700

why my grinder not power

⟐ Answered março 07, 2026 at 5:18 GMT-7

Makita Die Grinder 9067L 2010: Why does my angle grinder doesnot work after chaincing the brushes

Thu, 05 Mar 2026 16:48:43 -0700

Why does my angle grinder doesnot work after chaincing the brushes

⟐ Commented março 05, 2026 at 16:48 GMT-7

Bosch Angle Grinder: Bosch 10-125 c angle grinder. What bevel gear set I can use.

Mon, 23 Feb 2026 14:41:15 -0700

I need data of bevel gear set like dimensions of crown wheel and pinion i can use for that model

Angle Grinder: Why the rotor spins but the blade doesn’t

Wed, 04 Feb 2026 05:31:28 -0700

The rotor moves freely forward/backward instead of being fixed.

Blade doesn’t rotate or rotates very slowly.

⟐ Edited by author fevereiro 04, 2026 at 5:31 GMT-7

Dewalt Electric Handheld D28402 TYPE 1 2005: Why does my grinder not want to turn when I push the paddle?

Sat, 31 Jan 2026 15:49:11 -0700

When I push the paddle on the grinder it tries to turn on and stops in a second. I have to unplug it a couple of times for it to finally start working

Makita Die Grinder 9554NB 2010: no function and overheating

Sun, 04 Jan 2026 09:02:37 -0700

my ginder is not functioning and overheating, how to fix this?

⟐ Answer edited janeiro 04, 2026 at 9:02 GMT-7

Milwaukee Angle Grinder 614230 H40A 2017: side handle thread size

Mon, 15 Dec 2025 01:57:23 -0700

what is the side handle thread size ?

⟐ Answer accepted dezembro 15, 2025 at 1:57 GMT-7

DeWalt DWE4011: Any orbital sander with dust collection that is fixed with screws?

Tue, 25 Nov 2025 07:43:08 -0700

Hi,

I’m asking if there is any orbital sander or random orbital sander with dust collection that I can fix the sandpaper itself with screws from the middle?

I want to fix the sandpaper with screws because if there is any hard stuff (nails or so), the sandpaper flies out.

Regards,

⟐ Commented novembro 25, 2025 at 7:43 GMT-7

Makita Die Grinder 9524NB 2010: How to change carbon

Sun, 09 Nov 2025 19:24:47 -0700

How to change carbon

⟐ Answered novembro 09, 2025 at 19:24 GMT-7

Dewalt Electric Handheld D28110 TYPE 1 2005: I’m not able to route the 110 volt

Fri, 10 Oct 2025 07:24:57 -0700

I replaced brushes and now the 110v incoming power clamp doesn’t fit around the start switch. I’m missing something

Bosch Angle Grinder AG50125PD 2017: Seems like my angle grinder is just dead it won't switch on

Tue, 09 Dec 2025 05:59:22 -0700

My grinder won't switch on the power cord seems to be fine but i can't get it to work please help

⟐ Answer edited dezembro 09, 2025 at 5:59 GMT-7

Makita Mini Grinder 9564PC: Why is the roter winding sparking with brushes on the lamellas

Mon, 28 Jul 2025 06:24:48 -0700

I cleaned the space between the lamella and it sparks nonstop when energized.

⟐ Answer edited julho 28, 2025 at 6:24 GMT-7

Milwaukee Angle Grinder: Why is Milwaukee heavy duty grinder 6098 cutting off

Tue, 15 Jul 2025 23:14:49 -0700

Brushes are in great shape but are flat after cleaning with Emory paper. There's sparking at brushes when it runs briefly but cuts off. Have constant voltage to brush when I press trigger. Any help would be appreciated

⟐ Commented julho 15, 2025 at 23:14 GMT-7

Angle Grinder: Grinder name is KEN . It does not work.

Tue, 03 Jun 2025 22:57:31 -0700

How to repair this kEN grinder

Help me

⟐ Edited junho 03, 2025 at 22:57 GMT-7

Milwaukee Angle Grinder 288022: Why is my grinder cant turn on?

Sat, 08 Mar 2025 23:07:42 -0700

after push the switch it can turn on only beep.