Pro Grade Trailer Idler Hub Assembly Set Of 2 Featuring 5 Lug 4.5 Inch Bolt Pattern Rated For A Solid 3500 Lb Load Perfect For Boat Rigs Matches 1-1/16 Up To 1-3/8 Tapered Spindles Built To Last

Heavy Duty Trailer Idler Hub Set Of 2 For Boat Rigs
✔️ Fits shafts measuring twenty eight to thirty two millimeters safely

This trailer idler hub assembly ships as a complete pack of two replacements built for direct swap installations on flatbed and car hauler frames. Mechanics mount these units straight onto standard axle beams when upgrading older trailers carrying heavy gear. The full kit contains matching bearing cups, metal dust shields, oil seals, and ten twelve thread nuts ready for immediate bolt on job.

✅ Five lugs spaced across a four point five inch (114 millimeter) bolt circle secures wheels firmly
✅ Handles tapered shafts measuring twenty nine to thirty three millimeters (one and a sixteenth to one and three eighths inches)
✅ Includes inner bearing cup measuring fifty four millimeters (two point one inches) outside diameter
✅ Oil seal opening matches seventeen millimeters (six sevenths of an inch) while the dust cap sits at fifty millimeters (two inches)

💡 What steps prevent premature failure on high speed boat trailer axles?

Proper preload handling keeps your ride handy through long summer hauling trips.

• Check spindle runout before mounting to ensure the bearing faces sit perfectly flush
• Torque the retaining nuts in a star pattern so pressure distributes evenly across the race
• Film the splined shaft lightly with grease to reduce friction during initial spin up

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