This Tapered Roller Bearing # 15123 is designed to fit trailers that use 6 Lug Hubs. This Bearing Size is typically used as an Outer Bearing (the bearing installed near the end of the Spindle), but not all 6 Lug Lug hubs will use this particular bearing. Because of this, it's always best to check the Bearing Numbers and Measurements in your Trailer Hub Prior to ordering so you know you're getting the correct parts to fix your Trailer. The Inner diameter of this wheel bearing measures 1 1/4 inches, which would be the same measurement as the surface of the spindle this bearing fits on. The Trailer spindle this wheel bearing most commonly is used with is the #42 Spindle, but it is not the only bearing used on that spindle. There is also a 67048 bearing that could be used instead, it depends on the hub.
Boat and Utility Trailers both need to service and maintain their Bearings regularly, which often includes replacing the bearings to make sure everything runs smoothly. The number one way to maintain your bearings is to make sure they are always properly lubricated with High Quality Trailer Wheel Bearing Grease. We offer a few of the industry's best brands of Trailer Bearing Grease, including Marine Grade Grease for Boat and other Watercraft Trailers. You can find our selection of Greases at this link here.
1 1/4" Inner Diameter
Fits Race 15245
For 5,200lb-6,000lb Trailer Axles
Typically Used in 6 Lug hubs