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Armature Assembly 115V

Part Number: 517646-0
Makita
Availability: 25+ in stock
Price: $13.14
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Product Information
Manufacturer: Makita
Product Number: 517646-0
Classification: Part
Weight: 0.85 lbs.
Shipping: Ships Worldwide
Description:
This is a genuine OEM sourced replacement part which is specially designed for Makita power tools. This is a complete assembly which is sold individually, keep in mind, it includes the armature, the fan, the armature bearing and the commutator end bearing. Due to constant contact with carbon brushes armature will eventually wear out and would need to be replaced to maintain peak performance. It is highly recommended to replace both carbon brushes when replacing an armature. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this component.
Products Compatibility

This item works with the following types of products:

  • • Grinder
  • • Plate Joiner
Questions & Answers

This part fit in this model?? I have 5 machines waiting for this piece. Thanks for your help
Diego Trujillo for model number 9564CV asked on 2019-09-14
Hi Diego, the correct parts for your model are 518160-9 and 515231-3. Thank you for your question and good luck with your repair!
Will this fit my Makita 4" 9523NBH grinder? Does it come with both bearings?
Lenox for model number 9523NBH asked on 2019-11-18
Hello Lenox, thank you for your inquiry. For your model 9523NBH, the correct armature assembly is part number 517301-4. I hope this information helps.
Do I have to replace bearing to replace the Armature
Matt for model number 5007N asked on 2019-08-11
Hi Matt, for your model 5007N the armature is part number 510133-8 and looks like it includes a new bearing. So you would replace them all at once. Thank you for your question and good luck with your repair!
does this work with makita angle grinder 9557NB?
russ for model number 9557NB asked on 2019-08-06
Hello Russ and thank you for writing No but Part # 515611-3 is in the list of compatible items for your model. Hope this helps
Repair Instructions: Submitted by Customers Like You
5 of 5 people found this instruction helpful
Tool Type:
Grinder
Parts Used:
Armature Assembly 115V - 517646-0
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Wrench Set
Armature had gotten wet, shorted at the brush contact pointed burning it.
Remove one screw on cord end allowing cover to slide back over power cord exposing brushes and hold down springs, lift springs gently removed brushes. On grinder end removed 4 screws removing grinder wheel shaft, remover armature end shaft nut, remove 4 screws holding front housing along with old armature replace in reverse order using light oil on brush end of new armature only at bearing seal to help it slide in. Of course check before installing for dirt or debris that might impede assembly.
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4 of 4 people found this instruction helpful
Tool Type:
Grinder
Parts Used:
Armature Assembly 115V - 517646-0
Carbon Brush - CB458
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, 10mm open end wrench
Armature was missing a big section
Remove grinder head, remove brush cover, (1 screw at cord end) remove 10mm nut from head end. Remove both brushes. Install new armature, install grinder head, install new brushes, install brush cover. After all that, I turned on and it jerked 2 times, tried to start. But failed. I then removed brush cover & inspected brushes. I could see the brush holders were bent, possibly from hitting the old armature section. Slightly adjusted brush holders so brushes would contact armature all the way. Reinstalled & it worked great!
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3 of 3 people found this instruction helpful
Tool Type:
Grinder
Parts Used:
Armature Assembly 115V - 517646-0
Carbon Brush - CB458
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Wrench Set, 90 degree pick to pull back brush springs.
Armature and brushes were burnt out.1
1. Opened up Makita grinder.
2. Removed 10mm but to separate armature from drive gear.
3. Removed both brush hold down springs with pick.
4. Removed both brushes.
5 Removed armature.
6. Installed new armature.
7. Installed brushes and placed hold down springs onto brushes.
8. Installed drive gear and nut on new armature.
9. Closed up grinder housing.
10. Tested grinder which worked great.
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1 of 1 people found this instruction helpful
Tool Type:
Grinder
Parts Used:
Grip 36, GA5020 - 153504-2
Armature Assembly 115V - 517646-0
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Wrench Set, volt meter
All the smoke escaped from the motor
The grinder was overloaded on low voltage and overheated. The first thing I did was to determine if the grinder was worth fixing. I took the gear head apart to look at the gears. They looked perfect, so I proceeded with the repair.
1. Remove the end cap at the cord end.
2. Lift the brush spring off the brushes and extract and inspect the brushes. Looked good.
3. Remove 4 screws holding the gear case to the body, and pull the head and armature out.
4. Remove the nut hoding the spur gear on the armature and pull it from the case. The armature had small black holes in the windings where the smoke escaped. Inspect the field windings. Check for shorts between the wires and the case. None found. Looks like a good candidate for repair.
Order the parts (armature). Wait a few days for shippment, ressemble in reverse order.
Plug it in and look for more smoke. None found. Great inexpensive repair.
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2 of 3 people found this instruction helpful
Tool Type:
Grinder
Parts Used:
Armature Assembly 115V - 517646-0
Carbon Brush - CB458
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Wrench Set, Hammer, vise
Armature burnt up where brushes make contact
Removed handle this is held on by 4 screws and it allowed me to see burnt armature . Removed 4 more screw to separate head and gear assembly. Removed nut at the top of armature to release gear and pull top of armature through head assembly. Released spring tension on brushes disconnected brush wire contact and pulled brushes out and replaced installed armature back into head assembly reinstalled gear nut and put handle back on then released brushes installed 4 screws.
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Product Information
Manufacturer: Makita
Product Number: 517646-0
Classification: Part
Weight: 0.85 lbs.
Shipping: Ships Worldwide
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