Quality Features & Specs
Swivel Construction
HSK - Forged steel top plate and fork base; 1/4" x 2" precision laser cut steel legs welded inside and outside to forged steel horn base.
FMK - Kingpinless - 3/8" thick drop forged steel mounting plate; 5/16" x 2 1/2" plate steel legs robotically welded inside and outside to forged steel horn base.
Main Load Bearing
HSK - 3 15/16" diameter hardened and CNC-machined raceway with 3/8" balls.
FMK - 3 1/4" diameter CNC-machined and hardened raceway with 1/2" hardened and polished steel balls.
Axle
HSK - 1/2" diameter bolt with lock nut.
FMK - 3/4" diameter bolt with lock nut.
Lubrication
Special high heat lubricant rated to 750° F (In swivel assembly) and in wheels.