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A trailer wheel bearing kit built around NTN's Formula line, with two tapered bearings, matching cups (4T-L44610), a double-lip garter spring seal, 50 grams of grease, a cotter pin, gloves and installation instructions. The bearings use case-hardened steel with crowned rollers and raceways, which helps them handle the misalignment and shock loads trailers see. It suits boat, utility and travel trailer owners doing a hub service or roadside replacement. Against generic no-name kits, the NTN name and the included seal and grease make it a more complete, better-documented set; against premium brands it is a solid mid-tier choice rather than the longest-lived option.
In stock
Availability unknownSold by archie1973 (100% positive, 216 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $30.00 on Nov 11 at mtntopsnowbikes.com. Tracked across 1 store since Nov 11.
Owners who service their own trailer hubs generally rate these kits well for fit and completeness, and the included seal and grease are frequently called out as convenient. Complaints center on the small grease quantity and on needing to buy extra seals for a full axle job.
NTN Formula Trailer Wheel Bearings are a bearing kit for trailer axles. They fit 1" and 1-1/16" axle sizes. The kit includes two NTN 4T-L44610 cups and comes in an environmentally sealed package.
The bearings are made of advanced case hardened steel and use crowned rollers and raceways. The seal is a double lip garter spring seal.
The kit also includes 50 grams of grease, a cotter pin, and a pair of vinyl gloves. Instructions for installation are included.
