6302 is pretty popular in pump motors and as you noted there are
There is usually a number on the bearing that will cross. Google is
your friend. Metric has become the standard in the last decade or so
since most of the motors are made in Asia these days.
My wife has 7 pools in the community she runs and 11 lakes with
aerators. I have a pool a spa and 2 well pumps. All of the motors in
the 1-2 hp range seem to use a 6302 but YMMV. Check it out for a
number or measure it.
On Sat, 10 Sep 2011 11:26:10 -0400, firstname.lastname@example.org wrote:
I don't know if I mentioned but "6203D" is on my bearings.
Googling, I find LOTS and LOTS of the metric 6203 bearings (17mm ID x 40mm
OD x 12mm wide), at prices so scary as to make postage a bigger concern!
* The 6203-2RS ball bearing has two contact rubber seals one on each side
of the ball bearing.
* The 6203-ZZ ball bearing has two non-contact metal shields one on each
side of the ball bearing.
On Sat, 10 Sep 2011 02:01:06 -0400, email@example.com wrote:
I'm not worried about buying the right tools. They're inexpensive enough,
and they will easily pay for themselves on the first motor rebuild.
Right now, with that FANTASTIC bearing site you referenced, I'm trying to
cross reference my bearings to their part numbers.
- Sta-Rite Maxi-GlassII pump with the 1.0 HP x 1.65HP motor (QC1102), Y48
- Here is a rough desciption (it says "double sealed ball bearings",
whatever that means):
- Here is an exploded diagram
What I'm looking for is a way to cross reference the bearings.
I found an old receipt for my sta-rite maxi-glasII pump motor repair for a
similar motor (QC1102, 1.0 HP x 1.65 SF).
The receipt says:
- KBC 6203D double-sealed 17mm bearings, $9.50 each, Qty 2, total = $19.00.
- PS-201 Pump Seal, $12.00 each
- U9-228A Seal plate o-ring for pump housing, $6.00
Googling for that "KBC 6203D" bearing, I find there are two types:
$2.97 each, 6203-2RS,RS Sealed Ball Bearing 17mm ID x40 OD x12mm width
$3.10 6203-2ZZ Ball Bearing 17x40x12 mm 6203 ZZ Sealed Shield
I'm guessing "RS Sealed" and "Sealed Shield" are different ways of sealing
them. I would think for a pool pump, the more sealed it is, the better.
Presumably the ZZ (with two metal shields) is more sealed than the RS
(rubber shield?) but I'm guessing now.
I do know that there is clearly the black rubber in my motor ... so I guess
... the rubber shielded bearins are the OEM ones?
The AO Smith part number for the #203 bearing is: 604005-001 which is a
"double sealed high thrust" bearing.
So, that's probably what the "D" stands for in the "KBC 6203D" stamping on
the bearing itself.
Interestingly the AO Smith size specs differ ever so slightly from the
standard 6203 bearings:
I wonder if these (slight) differences matter?
6203: ID=0.66993", OD=1.5748", W=0.4724"
AOSmith: ID=0.6693", OD=1.5750", W=0.470"
I watched the guy rebuild one of my motors (for $150).
He used a torch to get the bolts off w/o breaking them ... then he whacked
the motor far harder than I was comfortable with until he pried it apart
... he used a bearing puller and the bearings were off in seconds ... and
then he put a post around the shaft and whacked the new bearings back in
It certainly didn't look sophisticated!
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