How to Select Replacement Trailer Hubs

Published 11/13/2014

Products Featured in This Question

Dexter Trailer Idler Hub Assembly for 2,200-lb Axles - 5 on 4-1/2

(873)

$110.75

Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - 4" Drop - 5 on 4-1/2 - 3.5K

(108)

$1107.85

Trailer Hub Assembly - 3,000 lbs Axles - 4 on 5 - Agricultural

(10)

$95.23

Replacement Trailer Hub Bearing - LM11949

(2074)

$3.81

Question:

I will like to upgrade my trailer hubs that are six lugs with 5 on 4 1/2 to match my jeep pattern . The problem is the old axle cone runners inside and outter are number 909501 and 909502 and i just cant find them to order the right parts that i need . i measured the spindle and the inner is 30.2mm or 1.19 in. the outer is .75 in or 19.0 mm here are some pictures ,.Thanks

asked by: Alfredo G

Expert Reply:

Thank you for submitting your photo of your trailer spindles.

To select compatible replacement hubs that have the 5-on-4-1/2-inch bolt pattern you want you will need to match up several characteristics to your existing hubs. You will need to match the axle's capacity and also either the bearing numbers or bearing diameters, as you have provided. I was able to find only a little information about the bearings (axle cone runners) you referenced, parts 909501 and 909502. They reportedly were made by BCA and were used on pre-1950's GM and Chevrolet vehicles. I also found a seller of a bearing claimed to be equivalent.

If bearings cannot be found by part number you can check for availability of replacements based on the spindle dimensions you took, which will need to match the bearings' inner diameters. You provided spindle dimensions of 1.19-inches for the inner and 0.75-inches for the outer so these are the bearing inner diameters you need.

We do not have a bearing that matches your 1.19-inch measure; the nearest ones are 1.063- and 1.250-inches. However we do have a match for the 0.75-inch inner diameter, part # LM11949. This bearing is used in agricultural hub applications such as in Dexter Trailer Hub Assembly # AH15450ECOMP which carries a 3000-lb axle rating and a 4-on-5-inch bolt pattern - not what you need.. For reference, at right is a link to our main page for all individual bearings and bearing kits, and also one to our page for 5-on-4-1/2-inch hubs.

You may find it easier to replace your entire axle with a new kit that includes the axle, spindles, hubs, bearings, races and seals. This ensures parts compatibility and a long service life since everything will be new. We also offer axle-less systems from Timbren that dispense with the axle beam and use rubber springs to provide an independent suspension. The link at right will let you see all trailer axles and kits using the 5-on-4-1/2 bolt pattern.

On the axle page you can use the filters in the left-hand margin to select the attributes you need, such as axle weight capacity, length and spring center length.

If you'd like to consider the Timbren axle-less systems that come complete with 5-on-4-1/2 hubs you can use the link at right that will show you 4 such kits, rated from 1200-lbs up to 3500-lbs, such as the 3500-lb-rated # A35RD545.