Removing Shaft Collar from Skateboard motor (63.5mm)

ESK8 Electronics
#1

I am doing my first build and purchased a motor that has a shaft collar on it. I removed the hex screw but the thing will not budge. I tried using a large flathead screwdriver and some wd40 with no luck. Do they make a collar puller for these things?

Thanks

#2

Its called a gear puller, if you are talking about the motor pulley. Mostly you can use heat to loosen it up, should slide right off.

#3

Are they glued on? Is that why you need to heat it up? Should I use a torch?

Thanks for your help Ric

#4

It depends on the manufacturer. For most pre-built boards the motor pulley uses a set screw and is glued with lok-tite or another adhesive. You just remove the set screw then heat up the pulley with a torch, heat gun, whatever will get past a couple of hundred degrees, then pull it off with gloves or pliers.

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#5

I’ll try that when I get home… Im used to working with smaller brushless motors. These are much bigger…

Thanks for your help Ric

#6

No worries, glad to help.

If you post the type of motor, manufacturer, size, etc. you will prolly get some more elaborate answers.

#7

FYI, @joystix2 When posting questions like this, it helps a lot if you post a picture of the item to help us see what your talking about. “A picture is worth a thousand words”

#8

Here’s a picture of the motor. It’s a EMAX GT5325 -11 260kv

20170308_215734.jpg1440Ă—2560 553 KB

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#9

Did you get the motor pulley off? Or did I misunderstand and you were trying to remove the snap-ring?

#10

Meaner, not yet. I tried a heat gun but I guess my heat gun wasn’t hot enough. I need to borrow my neighbors torch. The collar is that little cylindrical black thing on the shaft right?

#11

Yep, Ive not seen that before though. How was it mounted?

#12

It had a setscrew which I unscrewed but then I couldnt even pry it off. Do you think a torch might not even work?

#13

I really couldn’t say. I would try a commercial heat gun. Be careful of the motor itself.

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#14

Mmaner, The torch worked. Got it off. I think you were right. The manufacturer must put some sort of glue or loctite on it because I heated it up until I saw a little smoke and with a glove on pulled it off. It slid right off…Thanks for your help. Im excited to get my first build going again

Ric

#15

No worries, glad to help.

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#16

you need to add a circle clip or at least a spacer so the motor pulley can hold the can in place. I use a 3d printed spacer. without something the can will push out and you lose torque!!

other then that. emaxx motors have really nice quality.