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I need armature's fan & bush for BOSCH GSH27 - Bosch Hammering

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Best bet is to try to go directly though Bosch https://www.boschtoolsservice.com

Posted on Oct 10, 2010

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Posted on Jan 02, 2017

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Lasko 18" cyclone 1843 quit working is there a fuse


  • Lasko Cyclone fans have a thermal fuse (typically 130 degrees C) placed on the armature of the motor, connected between the input voltage line and the start capacitor. It is not user replaceable, since it is soldered, taped and attached to the armature with cable ties. When the motor overheats, the thermal fuse blows, primarily protecting against a fire hazard. Like most low cost Chinese manufactured fans, the motor uses low quality sintered bronze bushings instead of ball bearings to save a few pennies in cost. The bushing (each motor has 2) is surrounded by padding which is infused with lubricant, and the lubricant seeps through the bushing to lubricate the rotor shaft of the motor when it is operating. Unfortunately over time, the lubricant dries out or the bushings clog, causing the rotor friction to increase, resulting in the motor current increasing as it tries to maintain motor speed. This heats up the armature coils, causing the thermal fuse to eventually blow. While the thermal fuse can be replaced with some effort and the padding re-lubricated, eventually the same thing will happen because of the low quality bushings.

Jul 05, 2014 | Lasko 3520 20-Inch Cyclone Fan

2 Answers

Where to lubricate fan


What type of fan do you have? If it is a desk or stand fan, you need to add oil to the front bushing/armature (accessible by taking off the fan blade) and to the rear bushing. To reach the rear bushing, you need to take the motor cover off - pull the oscillator push-pull lever up until it disengages, then using a phillips screw driver, unscrew the retaining screw of the motor cover. When the cover is out, you need to unscrew 3 retaining screws on the oscillator assembly at the back of the motor. When the oscillator mechanism is out, you will see the motor armature at the back of the motor (has a threaded end). Add a little oil to the bushing of the armature. Then reassemble (reverse order - secure the oscillator assembly with 3 screws, install the motor cover and screw the back, insert the push-pull lever and you're done). Hope this may help.

Jun 27, 2014 | Dryers

1 Answer

Sparks coming off brush


#1 Check your brushes & brush springs - you will have to remove the switch handle completely to access both brushes
#2 Visual of the armature - is it black / burnt or does it have raised segments?
Most likely it will need an armature if it has run for any length of time with bad brushes.
The armature comes out the front of the motor housing so you need to remove the gearcase to access it. Armature 2610003331 for Bosch Power Tool eReplacement Parts Carbon Brush Set
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Mar 25, 2014 | Bosch Factory - Reconditioned 7/8" SDS -...

1 Answer

Where is thermal fuse on lasko fan


Lasko Cyclone fans have a thermal fuse (typically 130 degrees C) placed on the armature of the motor, connected between the input voltage line and the start capacitor. It is not user replaceable, since it is soldered, taped and attached to the armature with cable ties. When the motor overheats, the thermal fuse blows, primarily protecting against a fire hazard. Like most low cost Chinese manufactured fans, the motor uses low quality sintered bronze bushings instead of ball bearings. The bushing (each motor has 2) is surrounded by padding which is infused with lubricant, and the lubricant seeps through the bushing to lubricate the rotor shaft of the motor. Unfortunately over time the lubricant dries out or the bushing clogs, and the rotor friction increases, causing the motor current to increase. This heats up the armature coils, causing the thermal fuse to eventually blow. While the thermal fuse can be replaced with some effort and the padding re-lubricated, eventually the same thing will happen because of the low quality bushings.

Mar 03, 2014 | Lasko 3520 20-Inch Cyclone Fan

1 Answer

Bosch GSB 16 RE armature overheating


armatures over heat from 3 problems 1 The brushes are worn out and there is heavy arcing on the commutator bars causing excessive heat and 2 the armature is shorting out 3 the armature is touching the field shoes from worn out bushes/ bearings ( poling out). have an appliance electrician check it out.

Jun 02, 2013 | Saws

1 Answer

My motor on my fan has locked up. It appears that the magnet is keeping it from spinning. Can it be fixed?


I'll answer assuming your fan has been used for a long time.
The armature pulls itself towards the magnets but the razors/bushes keep it in the center.
With time, razors or bushes wear out allowing the armature to move sideways.
If razors/bushes are worn out too much, the armature can come into contact with the field magnet, making rotation almost impossible.
This could be what has happened to your fan.

Sep 23, 2011 | Dayton Dryers

1 Answer

I just bought a Bosch 35 lb jackhammer and want to know if it will work with the tamper plate or do I need the larger hammer?


Hi , you can use a tamper plate with it for small jobs , but to be honest i would go for a GSH27 ( easier on the back ) .

Aug 08, 2010 | Bosch HS2125 Tamper Plate 8" x 8"

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