Replacement Hub for Master Pro PT A-4 and National Bearing A-17 Bearings on a Utility Trailer

Updated 09/11/2013 | Published 09/10/2013

Products Featured in This Question

Trailer Idler Hub Assembly for 2,000-lb Axles - 4 on 4 - L44643 Bearings - Pre-Greased

(1481)

$45.83

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-1/2

(889)

$88.36

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-1/2 - Pre-Greased

(379)

$116.59

Dexter Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-3/4 - Pre-Greased

(379)

$107.66

Dexter Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 4-3/4

(889)

$111.20

Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5 - Pre-Greased

(121)

$66.38

Question:

I dont have the trailer with me to take measurements: but its a 5 stud bolt pattern, none brake hub style on a single axle 12 foot utility trailer. I have the bearing part #s which U may be able to figure out. Outer smaller bearing which I purchased was a Master Pro PT A-4, Inner larger bearing was a National Bearing A-17. Studs are mounted on the solid flat plate not the X style. I needed to add its a 15 inch wheel, thanks for any help

asked by: Don M

Expert Reply:

Based on the information I could find on those 2 bearings it appears that they are the same as L44649/L68149 bearings. Hubs that take these bearings include:

# 84545BX for a 5 on 4-1/2 bolt pattern
# 84545UC1-EZ for an EZ lube axle and 5 on 4-1/2 bolt pattern

# 84550BX for a 5 on 5 bolt pattern

# 845475UC1 for a 5 on 4-3/4 bolt pattern
# 845475UC1-EZ for an EZ lube axle and 5 on 4-3/4 bolt pattern

# 84555UC1 for a 5 on 5-1/2 bolt pattern

The star design is just a newer style of idler hub. They will still fit in place of the older style with the solid metal ring. To determine bolt pattern I have included a link to an FAQ that will help.

expert reply by: Michael H