Measuring Spindle for Replacement Oil Seal

Question

Question:

Hi, I have an old trailer with a straight 1inch spindle that is missing the inner grease seal on one side and the other side seams to be too large so not real. Is the inside diameter of the inner oil seal supposed to match the size of the spindle? If so, how does the bearing tighten down? Thank you,

asked by: Ben

1

Helpful Expert Reply:

The seal will be a similar size but it all depends on the spindle itself as to the actual size. It should have a tight seal so you don't leak oil but most systems use grease which also needs a good seal. The best way to determine the correct fit for your specific axle is to use a digital caliper to measure the spindle at that location. I've attached a photo to assist.

Once you have that measurement you will have the inner diameter for your seal and then you will measure the back of your hub to get the outer diameter with that same caliper. Precision is important. If you want to go to thousandths versus hundredths, a digital caliper will give you that additional precision.

I've attached the page to all your seal options to assist.

expert reply by: Jason S

1

click to enlarge

Answer 1

The TruRyde Spindle #TRU94FR that you referenced has a 1-1/4-inch diameter stub. This spindle will fit an axle beam (pipe) with a 1-1/4-inch inner diameter. While you can certainly fabricate your own axle to go on your homemade trailer, assuming you…

view full answer...

Answer 2

You will need to measure the diameter of the spindles where the seal and bearings ride. Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. To pick out the…

view full answer...

Answer 3

There are a few different ways to make sure that you are getting the correct hub to match your spindle like the wheel bolt pattern, bearings, and weight capacity. You can either use a Digital Caliper #PTW80157 to measure the different sections of…

view full answer...

Answer 4

I have included a picture that shows the measurements needed for a spindle, bearings, seals, faces, and hubs. The spindle measurements are labeled A through F. A is the spindle shaft diameter B is where the grease seal sits C is where the inner…

view full answer...

Answer 5

The spindle dimensions are as follows: A is the mounting dimension, B is the seal dimension, C is the inner bearing surface, D is the outer bearing surface and E is the diameter of the threaded portion of the spindle for spindle nut selection. Say…

view full answer...

Answer 6

To make sure you find the right replacement hubs you can do a couple of things. First check out the bearing and see if you can find the numbers for the bearings either etched or stamped on the side of the bearing. If you can not find the numbers you…

view full answer...

Answer 7

If you give me the tapered spindle measurements like in the attached photo, I can help you get the replacement hubs you need. I need the measurements at letter B where the seal sits, letter C where the inner bearing rides, and letter D where the…

view full answer...

Answer 8

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

view full answer...

Answer 9

To see all of the correct wheel and tire combos you'd need check out the link I attached. The option I would recommend is the part #TA43RR which is a Load Range C tire size ST175/80R13 mounted on a white spoke wheel with a bolt pattern of 5 on…

view full answer...

Answer 10

If your current springs have 5 leaves then going to a 7 leaf spring will increase the height of the trailer a little and make the trailer more susceptible to sway. Regarding capacity if you go with springs rated higher than what is required it will…

view full answer...

Answer 11

If your old axles have a 5 bolt brake flange the assemblies like Dexter Electric Trailer Brake Assembly - 12" - Left Hand - 6,000 lbs part #23-105 or Dexter Electric Trailer Brake Assembly - 12" - Right Hand - 6,000 lbs part #23-106 will…

view full answer...

Answer 12

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

view full answer...

Measuring Spindle for Replacement Oil Seal

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching