I ordered a new dry side and it is still loud. I think this has to do with my tank being exceptionally quiet. Sump in garage and a bean animal overflow. Still great pumps.
My wife said, that's supposed to be quiet? So I will continue to have my controller turn it off during dinner hours. But it is half the noise level as prior to bearing fix.
Not to rub it in but I am glade mine is very quite.
You have an MP40. I'm convinced this is a lateral force thing that is causing the noise. Try setting your glass thickness setting to the next thinner glass, and see if that helps.
This did help with the noise. Thank you! Will this cause any unnecessary wear on the pump?
http://www.bocabearings.com/productDetail.aspx?ItemID=3200
MR607-2RU TH9/C3 Radial Bearings
7 x 19 x 6 Millimeters
Bearing Material Chrome Steel 52100
Ball Material Chrome Steel 52100
Dimension Type
Metric
ID (d) 7
OD (D) 19
Width (B1) 6
Flange OD (D1) 22
Flange Width (Bf1) 1.5
Enclosure # Two Seals
Enclosure Material Rubber Seal
Enclosure Type Contact Seal
Retainer Material Polymite Plastic
ABEC/ISO Rating ABEC#1/ISOP0
Radial Play C3
Lube Kyodo PS2 Grease
RPM Grease (x1000) 33.3
RPM Oil (x1000) 44.6
Dynamic Load (Kgf) 238
Basic Load (Kgf) 91
Working Temp Deg C 121
Weight(g) 7.15
http://www.bocabearings.com/bearing-inventory/Radial-Bearings/1397/8x19x6-XMR698EPS
X-MR698-EPS Radial Bearings
8 x 19 x 6 Millimeters
Bearing Material Chrome Steel 52100
Ball Material Chrome Steel 52100
Dimension Type Metric
ID (d) 8
OD (D) 19
Width (B1) 6
Enclosure # Two Seals
Enclosure Material Red PTFE Seal
Enclosure Type Removable (S)
Retainer Material Chrome Steel
ABEC/ISO Rating ABEC#1/ISOP0
Radial Play P25
RPM Grease (x1000) 32.4
RPM Oil (x1000) 38.7
Dynamic Load (Kgf) 228
Basic Load (Kgf) 94
Working Temp Deg C 121
Weight(g) 681
i wanted to give my experience with this rebuild. I purchase a used mp40w gen 2 and notice that the dry side is a little louder than my 6 month old mp40w ecosmart. I find this fabulous thread and took my dry side apart and the front bearing had a little red film on the bearing and shaft. I order a couple bearings from amazon and now it is quieter than the ecosmart.
Btw are you guys using any thread lock on the screw in the center of the magnet??
Here are the bearings from amazon:
S607zz bearing 7x19x6 stainless steel shielded miniature ball bearings vxb brand
s698zz bearing 8x19x6 stainless steel shielded miniature ball bearings vxb brand
I've ordered them today ,will keep you posted on this.
Thanks