Tech Tip: New Hub Units May Exhibit Rough Feel When Rotated by Hand Calhoun GA
During the inspection process, it is not abnormal to feel a rough, coarse sensation as the two halves of the hub are rotated. This condition is not an indication of a defective bearing; these hub units should not be returned as suspected defective parts.
Calhoun Auto Outlet Inc
706-625-7074
706-625-7074
446 Highway 53 E
Calhoun, GA
Calhoun, GA
Automotive Group of Georgia, Inc.
706-629-0241
706-629-0241
1045 Curtis Pkwy SE
Calhoun, GA
Calhoun, GA
Hayes Radiator
706-624-1760
706-624-1760
612b N Wall St
Calhoun, GA
Calhoun, GA
Crawford Used Cars
706-629-9884
706-629-9884
1114 N Wall St
Calhoun, GA
Calhoun, GA
United Auto Service Inc
706-629-9541
706-629-9541
P O Box 635
Calhoun, GA
Calhoun, GA
Adairsville Towing & Automotive
706-625-9700
706-625-9700
125 Robinson Rd NW
Calhoun, GA
Calhoun, GA
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Tech Tip: New Hub Units May Exhibit Rough Feel When Rotated by Hand
December 17, 2009 In a recent technical bulletin, SKF addresses the rough or coarse feel of some new hub units if they are rotated by hand before installation and explains why these conditions are normal for technicians to experience. In recent years there have been concerns about new hub bearings being rough or difficult to rotate. Many technicians inspect a new replacement hub bearing visually and by rotating the assembly once or twice by hand. During the inspection process, it is not abnormal to feel a rough, coarse sensation as the two halves of the hub are rotated. This condition is not an indication of a defective bearing; these hub units should not be returned as suspected defective parts. This condition is caused by the premium grease SKF uses in many of its bearings, especially in hub bearings. SKF uses GHG grease that provides a significant advantage over other standard greases. SKF GHG contains many performance-enhancing additives, some of which are in the form of soft crystalline structures when the grease is new. These crystalline structures can create a rough, coarse feeling when the hub bearing is first turned by hand, before the bearing has experienced significant rotation. These additives are important to optimum wheel bearing performance and include anti-brinelling and extreme pressure performance enhancers and solid lubricant components. This advanced technology grease chemistry improves bearing performance from many aspects, rangin... |
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