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Cracked Motor Housing

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Forum topic by TheGreatJon posted 04-17-2015 12:39 PM 839 views 0 times favorited 12 replies Add to Favorites Watch
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TheGreatJon

331 posts in 838 days


04-17-2015 12:39 PM

Topic tags/keywords: motor

I’ve been looking for a bandsaw for quite a while and I found a Rikon 10-325 (14” Deluxe) on one of the auction sites that I stalk. It is still in the box, but has a note that says the motor housing is cracked, so I assume it was a store return or something similar.

I’m a mechanical guy and my knowledge of electrical motors is only enough to make me dangerous. Is a cracked motor housing the end of that motor? I’m assuming this means that the casing around the motor is cracked. That doesn’t seem like a huge deal to me as long as you seal it up (duct tape, caulk?) I can get a replacement motor for pretty cheap, but I don’t yet know if I need to.

Thanks in advance for any pointers!

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12 replies so far

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bigblockyeti

4130 posts in 1325 days


#1 posted 04-17-2015 12:52 PM

It does depend on exactly what is meant by a “cracked motor housing.” The motors those saws come equipped with have an extruded aluminum case or “housing” and it’s possible it could have been cracked if mishandled. If the front and rear plates that contain the rotor support bearings are not displaced then it could work, but given the loads placed on the shaft it might work well on a bench and not so much when installed and the belt properly tensioned. Did they offer any pictures?

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TheFridge

6657 posts in 1091 days


#2 posted 04-17-2015 01:01 PM

What he said. If it houses the bearings you might be able to get another housing maybe?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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TheGreatJon

331 posts in 838 days


#3 posted 04-17-2015 01:05 PM

The only picture is of the outside of the box, so I don’t have any more info than this. Everything is still packed inside. Though it did make me wonder how they knew it was cracked if it hadn’t been unpacked.

I guess I’ll just wait till I have my hands on it to see if it’s serviceable or not.

-- This is not the signature line you are looking for.

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bigblockyeti

4130 posts in 1325 days


#4 posted 04-17-2015 01:11 PM

I would also wonder what else might have been damaged at the same time the motor was damaged? Seems unlikely that only the motor would have taken a hit, but you never know until you see it.

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TheGreatJon

331 posts in 838 days


#5 posted 04-17-2015 02:13 PM



I would also wonder what else might have been damaged at the same time the motor was damaged? Seems unlikely that only the motor would have taken a hit, but you never know until you see it.

- bigblockyeti

That did occur to me. I would be really bummed if it was missing pieces or if it had anything else broken. On the other hand, at the price I was bidding, it was definitely worth the risk. I’ll just be crossing my fingers.

-- This is not the signature line you are looking for.

View JoeinGa's profile

JoeinGa

7663 posts in 1611 days


#6 posted 04-17-2015 10:41 PM

Could just as likely be the mount where the motor bolts to is what broke.

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REO

903 posts in 1678 days


#7 posted 04-18-2015 12:06 AM

could be it is a c face mount as long as the crack doesn’t extend into the bearing area it is repairable. If it happens to be aluminum the repair can be done with a propane torch and with little chance of distortion as well.

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TheGreatJon

331 posts in 838 days


#8 posted 04-25-2015 06:55 PM

Just an update if you were involved in this conversation before:

Looks like the housing is more than just cracked… I think they shipped it with the motor attached and with the saw resting on its side so that the motor was supporting the weight of the saw. The broken part appears to be detachable, so if I can get a replacement part, I’ll just do that. Otherwise it looks like I need a new motor. The rest of the band saw looks great though.

-- This is not the signature line you are looking for.

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bigblockyeti

4130 posts in 1325 days


#9 posted 04-25-2015 07:23 PM

If you can get a replacement end cap for the front of the motor it looks like you’ll be back in business. That being said, it could be difficult finding someone will (or able) to sell just part of a Chinese made motor.

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TheGreatJon

331 posts in 838 days


#10 posted 05-02-2015 01:29 PM

Final update for everyone that chipped in advice and thoughts:

I got in touch with a local welder and asked if he could fix the motor mount/endcap. He said that it depended on how much zinc was alloyed into the aluminum casting. We had no idea, but the cap was a loss unless it could be welded, so we gave it a shot. It worked great. There was definitely some zinc in there, but it welded up just fine and I got the motor working for $25. I still didn’t like the motor mount design because the whole motor is hanging in space, just cantilevered on that aluminum casting, so I wedged a piece of MDF under the motor to support the back end.

I got everything else tuned up and it’s running great. This is my first band saw, so I can’t compare it to anything, but I was able to resaw 5 inches of cherry to get a nice thin veneer while using the stock blade that came with the saw.

-- This is not the signature line you are looking for.

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JoeinGa

7663 posts in 1611 days


#11 posted 05-02-2015 07:32 PM

Cool beans! Alls well that ends well

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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Todd

398 posts in 1281 days


#12 posted 05-04-2015 10:26 PM

Great find! Congrats!

-- Todd, Huntsville, AL

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