New SKF Racing Hubs turn rough
11-09-2022, 05:09 PM
#1
Burning Brakes
Thread Starter
New SKF Racing Hubs turn rough
I have a set of nib skf racing hubs I got from a user here and am getting ready to put them on but they all turn a bit rough.
as if there was some dirt in them or something.
has anyone run into this? My search-fu isn’t turning anything up
as if there was some dirt in them or something.
has anyone run into this? My search-fu isn’t turning anything up
11-14-2022, 01:31 AM
#2
Le Mans Master
Yes. SKF warns that their wheel bearings will feel rough when new and turned by hand due to some special grease they use. I installed four new (OE replacement, non-racing) SKF hubs and all four felt gritty when turned by hand. On the car, they were all fine.
The following users liked this post:
double06 (11-14-2022)
11-14-2022, 11:00 AM
#4
I'd love to know what "special grease" they use. Hopefully someone will post up if they find out......
11-14-2022, 01:34 PM
#6
Le Mans Master
Originally Posted by SKF Vehicle Aftermarket
One important characteristic to note about the SKF GHG grease is that hub bearings with this grease may have a rough, course feeling when the unit is turned by hand. Many technicians will inspect a replacement hub unit visually as well as by turning the assembly by hand. It is important to note that turning a hub bearing by hand is not a proper way to check its quality.
The SKF GHG grease contains many performance-enhancing additives, some of which are in the form of soft crystalline structures when the grease is new. When turning a new SKF premium hub bearing by hand, the rough course feeling is a result of these soft crystalline structures.
Even though the hub bearing may feel rough when initially rotated by hand, after rotating on the vehicle for a few minutes, the soft crystalline structures break down into finer structures, and the hub bearing rotates smoothly.
There is no detrimental effect of the SKF GHG grease run-in. This is normal for high-performance grease.
It seems to be true. My new SKF bearings did feel rough out of the box, but they're working fine after installation.
11-15-2022, 09:07 AM
#7
This is one of many things that make this forum so great!!
The following users liked this post:
tommyc6z06 (11-16-2022)