Quick question on roller bearing replacement

[gamp945]

Quick question on flanged bearing replacement

Hi all,

I've just run into the first time I've needed to replace a roller bearing. This is on a wheel for a hand truck.

I can see the bearing number is 6202Z. However, the existing bearing clearly has a "lip" or flange that allows it to be seated correctly in the wheel housing (see the attached photos). When I search for the 6202Z bearing, the photos do not show this flange. For example:

https://www.amazon.com/dp/B00FH4ADLU/?tag=atomicindus08-20

What gives? Why does the same 6202Z bearing number not have a flange like the one I am trying to replace?

 

[RustyJunk]

Just put an f in front of the part # for a flanged bearing.

 

[MBfreak]

6202 is a ball bearing, not a roller bearing.

Ola

 

[gamp945]

Just put an f in front of the part # for a flanged bearing.

Thanks - but why does the stamped number on the existing bearing not have an F? Regardless, when I search for F6202Z, I get no usable results. "F6202Z" does not seem like it is a valid bearing number.

 

[matt stott]

What are the dimensions on that bearing? The surface finish of the shaft diameter and the outer diameter seem a bit rough for a bearing, just wondering if someone turned a normal 6202z down a bit to fit.

Mcmaster has 6202z with a retaining ring, close, but not an exact match- that is why I am curious to know the measurements of your bearing.

(mcmaster # 6661K24)

 

[MoonRise]

Double check the actual dimensions.

6202 -should- be a metric ball bearing with 15mm ID and either a 32 or 35mm OD (I see listings for both ODs).

Check here at the VXB site (no affiliation, just found them via a google search)

https://www.vxb.com/F6202-2RS-Flange-Sealed-Miniature-Bearing-15x35x11-p/f6202-2rs.htm

15mm x 35mm x 11mm flanged bearing with double rubber seals

Or here for their listing of LOTS of 15mm ID ball bearings

https://www.vxb.com/15mm-inner-diameter-Bearings-s/177.htm

 

[Doug Arthurs]

the shield that has the 6202Z on it is used on different bearings with the same dimensions. It is really just telling you inside outside dimensions and that it has a shield and not seals. They don't have special ones to indicate special features like a flange.

 

[matt_i]

the shield that has the 6202Z on it is used on different bearings with the same dimensions. It is really just telling you inside outside dimensions and that it has a shield and not seals. They don't have special ones to indicate special features like a flange.

I would agree this is a cheaply produced bearing where they didn't bother to mark or etch the entire bearing number on one of the races.

The 6202-Z on the shield is generic.

I usually go to SKF for research on single row "electric motor" ball bearings.

 

[gamp945]

I measure 15.8mm ID and 35.0 mm OD on the bearing that won't fit on the axle. But the other wheel's bearings that *does* fit on the axle has an ID of 16.0mm.

So I guess I'm looking for a flanged bearing with an ID of 16mm and OD of 35mm.

I don't understand - doesn't the 6202 stamped on the bearing indicate that the ID is 15mm, not 16mm?

 

[Dingleburry]

I measure 15.8mm ID and 35.0 mm OD on the bearing that won't fit on the axle. But the other wheel's bearings that *does* fit on the axle has an ID of 16.0mm.

So I guess I'm looking for a flanged bearing with an ID of 16mm and OD of 35mm.

I don't understand - doesn't the 6202 stamped on the bearing indicate that the ID is 15mm, not 16mm?

Some bearings are in inch ID, they are tricky sometimes.
6202-10-zz or 6202-zz-10 is what you wanna search.
The 10 stands for 10/16ths (5/8)
15.8mm is .622, which is a .625 ID.
Ive never seen a mm bearing that have decimal places in (nominal) sizes. Unless they are in inches.


Heres an example pic on a 6203

 

[gamp945]

Dingleburry - that makes sense for the bearing that *won't* fit - that is the one that measures 15.8mm. Maybe that one is an inch-sized bearing where it should have been a 16mm bearing. The bearings that do fit on the axle measure 16mm ID.

 

[MoonRise]

gamp,

VXB lists a 16mm ID x 35mm OD x 11mm width flanged and sealed bearing

https://www.vxb.com/16x35x11mm-Trolley-Guide-Bearings-Flange-Diam-37mm-p/f16x35x11.htm

The flange OD is 37mm on that bearing.

It is $25 though. Each. Ouch.

 

[Dingleburry]

Dingleburry - that makes sense for the bearing that *won't* fit - that is the one that measures 15.8mm. Maybe that one is an inch-sized bearing where it should have been a 16mm bearing. The bearings that do fit on the axle measure 16mm ID.

Theres sooo many differrnt styles, types, variants and special application bearings.
But on the most used bearings the last two digits of your part number is your ID size times 5, in mm. So a 6208 will be 08 x 5 = 40mm ID nominal. It will be sligtly smaller actual dimension because typically the ID is the inteference fit.
The exception to the last 2 digits are 00,01,02,03
Which go as follows.
00 is 10mm ID
01 is 12 mm ID
03 is 15 mm ID
04 is 17 mm ID
After that 05 and beyond is x 5 up to size i dont remember. I think up to 500mm.

The first number (6) stands for bearing type, in this case single row deep groove ball bearing
The second number (2) stands for the duty or width of it. Which also changes the OD.
The Z stands for seal type. Z is shielded. R or RS is contact seal. RU is non contact seal etc etc.

This info is mainly what the bigger companies use. skf,***,ntn etc
Alot of other random companies use different systems.
I searched for a 16mm bearing and their part number is 6203-2RS-16
Which shows the 16 in part number is in mm, not 16ths of an inch. To me the 16 would on first glance indicate a 1inch ID.
The brand is VXB. Never heard of them. I work on industrial machinery so its mostly all standard stuff. Not off brand stuffs

 

[5ktq]

I think these tiny flanged bearings aren't part of the standard, and are just some chinese invention. I've never seen one made by a real company.

single row, non angular contact ball can't take much side load anyway. Interference fit should be fine I don't really see a need for a flange in this application?


6202 should be 15 x 35, 11mm wide. So I guess you need a 6202-16-x ("nonstandard" 16mm ID variant, probably cost 3x a normal one)

If you can change the axle to 5/8" you could probably just use a 5/8 x 1-3/8 murrican bearing. (slightly under 35mm, does green loctite work on ABS wheels..?)

I would put a piece of pipe inbetween the two bearings inside the wheel, so that the nut on the axle doesn't side load the bearings

 

[Dingleburry]

I think these tiny flanged bearings aren't part of the standard, and are just some chinese invention. I've never seen one made by a real company.

single row, non angular contact ball can't take much side load anyway. Interference fit should be fine I don't really see a need for a flange in this application?


6202 should be 15 x 35, 11mm wide. So I guess you need a 6202-16-x ("nonstandard" 16mm ID variant, probably cost 3x a normal one)

If you can change the axle to 5/8" you could probably just use a 5/8 x 1-3/8 murrican bearing. (slightly under 35mm, does green loctite work on ABS wheels..?)

I would put a piece of pipe inbetween the two bearings inside the wheel, so that the nut on the axle doesn't side load the bearings

I agree. Also ive NEVER seen a surface finish like that on a "real" bearing

 

[KenC]

That's a really common bearing, cataloged as 'unground' by a lot of sellers. Almost always 5/8 x 1 3/8 and using in low speed lawnmower wheels/hand trucks etc. Go to the VXB website and browse.

Measure your axle carefully as it's not uncommon to have distorted ends from shearing that prevents the 5/8 (15.875") from slipping on easily.

 

[Dingleburry]

Heres a couple bearings for shits and giggles

 

[gamp945]

Thanks everyone for the help and advice. I ordered a bearing manufactured for Magliner (hand trucks) which appears to be the same bearing used on my hand truck. It was $1.60 from Zoro. Hopefully it fits!