Hub motor side plate seals

[Eastwood]

Hello,
What’s the name for the seals that go in the side plate cover that connects to the axle? Need replacements seals, don’t know the keywords to search for this item. It has a metal spring/ring that goes on the inside of the seal.
Thanks!

This is for a QS205 V3

 

[SlowCo]

Google: oil seal

 

[Chalo]

If that's the seal from a cartridge bearing, it's time for a new bearing.

 

[Eastwood]

If that's the seal from a cartridge bearing, it's time for a new bearing.

No is the rubber seal that goes into the side plate that seals the shaft from water and dust. It has a little silver spring on the inside.

 

[999zip999]

So many seals out there . Ask Vito at QS motors. Joke Vito to busy. In the new for sale thread they are always listening.
https://endless-sphere.com/forums/viewtopic.php?f=31&t=65972&start=1475#p1701061

 

[Eastwood]

I think I found it,
https://www.govets.com/index.php/dds-226-cxo-52wc64.html

 

[Eastwood]

So many seals out there . Ask Vito at QS motors. Joke Vito to busy. In the new for sale thread they are always listening.
https://endless-sphere.com/forums/viewtopic.php?f=31&t=65972&start=1475#p1701061

Google: oil seal

Thanks

 

[999zip999]

harbor freight has a battery operated digital calipers in metric and it does inches 19.99 add coupon and 15.00usd. to measure your cover, seal and axle.

 

[Eastwood]

harbor freight has a battery operated digital calipers in metric and it does inches 19.99 add coupon and 15.00usd. to measure your cover, seal and axle.

Yeah I have a caliper my friend :thumb:

 

[999zip999]

Good luck. Let us know if works.

 

[Eastwood]

I will post the links to the side cover seals in case anyone else needs this for “QS205 V3”

1st seal is 20x30x4mm
https://www.123bearing.com/seals-OA-20X30X4-NBR?gclid=Cj0KCQiAu62QBhC7ARIsALXijXTMQ_aiSyUGSiTz42KiamVcq05PG-MwS26R4TCVG8GdAHFSb5LKgr8aApIOEALw_wcB&gclsrc=aw.ds

2nd seal is 30x38x4mm - Edit: updated link
https://www.ebay.com/itm/EAI-Metric-Oil-Shaft-Seal-30x38x4mm-Dust-Grease-Seal-TC-Double-Lip-w-Spring-/265134042671?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

So they referred to as, oil seals or rotary axle seals or shaft seals. Hopefully this is helpful for anyone else out there looking for new seals

 

[DogDipstick]

I will post the links to the side cover seals in case anyone else needs this for “QS205 V3”

1st seal is 20x30x4mm
https://www.123bearing.com/seals-OA-20X30X4-NBR?gclid=Cj0KCQiAu62QBhC7ARIsALXijXTMQ_aiSyUGSiTz42KiamVcq05PG-MwS26R4TCVG8GdAHFSb5LKgr8aApIOEALw_wcB&gclsrc=aw.ds

2nd seal is 30x38x4mm
https://www.zoro.com/dds-shaft-seal-30-x-38-x-4-mm-nitrile-rubber-303804vg/i/G6132850/#specifications

Interesting. This is a much different dimension of the "QS205 V1". These two motors share alot, but not seals apparently, even though the axles look identical. I have a V3 here, new, I am thinking about pirating for the seals and the bearings, to get backup and running today. Now it sounds like I need to find new seals, i was hoping the V3 seals would fit the V1 seal bore. Guess not. I will post dimension of V1seal in this post in an update.

A external seal failure caused a destruction of my bearing on the freewheel side. From the outside, this bearing failed. Just one. Radial runout was not that bad, perhaps a quarter millimeter.. however, the Axial runout was very, very bad, almost a whole millimeter ( and yes, this would allow a great movement there) to each side..Almost 2mm total. The axle would skew the wheel at an angle.

For the record, if anyone stumbles upon this, the bearings for the 205 V1 35H motor are part number 6004RS. OEM bearing. 20x42x12mm sealed deep radial groove.

 

[Eastwood]

Oh and here’s a better option for the 2nd seal is 30x38x4mm

https://www.ebay.com/itm/EAI-Metric-Oil-Shaft-Seal-30x38x4mm-Dust-Grease-Seal-TC-Double-Lip-w-Spring-/265134042671?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

Then this one is good for the other side plate, 20 x 30 x 4mm

https://www.123bearing.com/seals-OA-20X30X4-NBR?gclid=Cj0KCQiAu62QBhC7ARIsALXijXTMQ_aiSyUGSiTz42KiamVcq05PG-MwS26R4TCVG8GdAHFSb5LKgr8aApIOEALw_wcB&gclsrc=aw.ds

And technically if you could find a seal that was 5 mm thick instead of the 4 it probably would work better because there’s plenty of room, probably could use a 6 mm thickness if they made it. I got tired of searching so I settled for these 4 mm thick which are very similar to the OEM. I believe the OEM is 5 mm thick but couldn’t find any except cheap Chinese ones.

 

[DogDipstick]

Oh and here’s a better option for the 2nd seal is 30x38x4mm
Then this one is good for the other side plate, 20 x 30 x 4mm
And technically if you could find a seal that was 5 mm thick instead I believe the OEM is 5 mm thick but couldn’t find any except cheap Chinese ones.

Well, one of those would work in the V1 35H motor. ( must be the non-wire exit side, thin phase lines for the other)..20 x 30 x 5mm.. The OEM is 5mm on mine. 4mm would work fine.

...the other seal is 28 x 20 x 5mm

Thankyou.

This seal, the freewheel side seal, is what went bad and took out the freewheel side hub motor bearing on mine. approx 10K miles.

I am replacing the bad, no name, OEm 6004RS bearings with: ( I'll take a pic of those then, they are trashed)

SKF Part number 6004/2RSH-LHT23/MB3, a ester base low/wide temperature greased, double side double lip, SKF Explorer deep groove with a machined brass cage in ABEC grade 3 with a 10 kN dynamic rating. ( I am not using the matched pair option, for this part number, even though that is an available part option. )

 

[Eastwood]

Well, one of those would work in the V1 35H motor. ( must be the non-wire exit side, thin phase lines for the other)..20 x 30 x 5mm.. The OEM is 5mm on mine. 4mm would work fine.

What’s your thoughts on adding some oil or grease to the rubber seals? maybe to prevent from drying out from all the heat. After all it’s connected to the axle but it’s also spinning on the axle which probably generates more heat in the rubber seal. But then again maybe the oil or grease will attract grit and dust causing scarring on the rubber while it’s spinning.

Also we should probably be careful with reinstalling the side plates to not mess up that inner ledge of the rubber seal and maybe a little bit of oil or grease could help with sliding the side plate on. In my past rebuilds I don’t normally use any oil or grease but I’m thinking it might be beneficial

 

[DogDipstick]

What’s your thoughts on adding some oil or grease to the rubber seals?
Also we should probably be careful with reinstalling the side plates to not mess up that inner ledge of the rubber seal and maybe a little bit of oil or

Yeah If I can I always grease the seals, whether it is a timing chain cover, rear main, front main seal, ect. Hopefully it will stay. This time I used Cosmoline, filled the gap between the seal and the bearing. Parrafin.

I also installed the seal AFTER the side covers were on. Having a large phase wire, this helped alot get it past the bulge. I almost did not make it. Wires almost did not fit inside the hole and still make it. I bored the 8mm to 10mm. The design of the V1 has much less axle there, but still enough.

Yeah I glued that in there with Cosmoline. Since that is were mine failed. I have packed grease into flanges and holes before with somewhat decent results, if it does not melt out (390*F) Lol. Its under a eighth inch of modified non polar 20$ a can paraffin wax right now. We will see if it leaks. I also have a V3, strictly ready for modification.

I also use grease to seal flanges sometimes. It does work well, You ca seal an intake or even an exhaust with a thin layer of grease. However, this time I used Loctite 504, anaerobic high pressure high temp gasket maker, fills to 0.01 inch.

My motor has no rubber seal grove around the side plates, nor any rubber seals. Just silicone, OEM.