Breaking Down the Easy Grease Trailer Idler Hub Assembly for 2K Axles Video

Since the Loadstar K399 Bias Trailer Tire #AM1HP54 has a load rating "D" and a ply rating of 8, the recommended PSI for the tire is 70.

It would seem that the 1,750 rating that your tire has is the weight rating, but most ST205/75-14 tires with a Load Range of C have a 1,870 lb capacity at 50 psi like part #AM10229. That would mean that when you combine the two tires you have an…

The wheel pilot hole will only matter if A) the wheel centers on the hub and uses wheel bolts, nut lug nuts, to secure to the hub or B) if the hole is too small on a hub that uses lug nuts. If your wheels secure to the hub using lug nuts then the…

The pilot hole on a wheel for a trailer only matters if the wheel secures to the hub using lug bolts instead of lug nuts or if the hole size is too small to fit over the hub. One of our 13 inch tire and wheel combos with the 4 on 4 bolt pattern does…

I wasn't quite sure the exact measurement you were referring to in regards to "diameter of the rim alignment ledge" for the Trailer Idler Hub Assembly for 2,000-lb Axles #AKIHUB-440-2-2K so I took a number of measurements of this hub.…

Idler hub #AKIHUB-440-2-2K does indeed fit on a spindle that takes L44649 bearings as both the inner and outer. The hub includes the races (already pressed in) the bearings, a seal, grease cap, and lug nuts. I have linked a video review of this hub…

I have a solution for you. You would actually want the part #AKIHUB-440-2-2K as it has a 4 on 4 inch bolt pattern like you need and the bearings that come with the hub are designed to fit a hub with 1-1/16 inner diameter bearings.

The pilot diameter on a wheel, like the one with part #AM30620, is the diameter of the bigger hole that is directly in the middle of the wheel. The pilot hole diameter of the wheel for the part I just measured is 2.84". I have attached a picture…

I am not sure what you mean by "short hub" but I went out to the warehouse and found that the Trailer Idler Hub Assembly #AKIHUB-440-2-2K you referenced has a total depth of 4-1/4" as you can see in the attached picture.

The importance of matching a wheel's pilot hole diameter to the part of the hub that fits through it depends on the type of wheel. A hub-centric wheel uses the pilot hole to center the wheel on the hub and also to bear some of the total weight…

I have attached a chart you can check out that describes the torque needed per wheel size, wheel stud size and material. For an 8-inch wheel with a 1/2-inch wheel stud the torque is 75 to 86 ft-lbs. For a 15 inch steel wheel with 1/2 inch wheel studs…

For idler hubs, you will want the Trailer Hub Assembly for 2,000-lb Axles - 5 on 4-1/2 #AKIHUB-545-2-1K or the 4 on 4 inch bolt pattern #AKIHUB-440-2-1K. This is a standard BT8 spindle. I've attached an installation video to assist as well as an…