RECOMMENDED APPLICATIONS FOR POPULAR WEBB 16.50 X 7" BRAKE DRUMS
THE PURPOSE OF THIS BULLETIN IS TO CLARIFY THE RECOMMENDED VOCATION USE OF SEVERAL POPULAR WEBB 16.5 X 7" DRUMS WITH 8.78" PILOT DIAMETERS.
Category #1: 76864B Vortex (100 lbs), 66864 (112 lbs), 56864B (105 lbs.)
These drums are recommended for standard duty cycle drive axle and
trailer axle applications and are FMVSS-121 tested for a maximum GAWR
of 23,000 lbs. For heavy duty applications, use 66884.
Category #2: 66884 (119 lbs)
This drum is recommended for heavy duty applications that are subjected
to a higher frequency of mechanical and/or thermal cycling compared to
standard duty over the highway applications and this drum is FMVSS-121
tested for a maximum GAWR of 26,000 lbs.
Category #3: 66660 (137 lbs), 66661 (136 lbs)
For severe duty applications such as fire trucks and applications that
require the use of a Type 36 air chamber. These drums are FMVSS-121
tested for a maximum GAWR of 31,000 lbs.
For any and all your Webb wheel end needs call Fontaine PartSource.
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