Difference Between BTR and BT8 Spindles

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Question:

Whats the difference between BTR spindles, and BT8 spindles?

asked by: Scot

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Expert Reply:

The difference between a BTR # TRU44FR and BT8 spindle # TRU94FR is that the BTR spindle uses a 1.063" diameter # L44649 bearing and the BT8 spindle uses a 0.99" diameter # L44643 bearing.

expert reply by: Jameson C

0

Answer 1

The BTR and BT8 denotations refer to the spindle, not the trailer hub. The difference between a BTR and BT8 spindle is that the BTR spindle uses a 1.063" diameter L44649 bearing and the BT8 spindle uses a 0.99" diameter L44643 bearing. In…

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Answer 2

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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Answer 3

You are correct and I do have a tire for you. However, you don't want to use the Kenda Loadstar K371 Bias Trailer Tire - 4.80/4.00-8 item #AM10002 on the highway at 70 mph. Instead you will want the Kenda K371 Bias Trailer Tire - 4.80/4.00-8 -…

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Answer 4

The Kenda K371 Bias Trailer Tire - 4.80/4.00-8 - Load Range C #AM10004 does indeed have a speed rating; it is 65 mph.

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Answer 5

The easiest way will be to pull off a trailer wheel and hub and then use a caliper like #PTW80157 to measure the spindle diameter where the bearings ride. If the diameter is .99 then you have the BT8 spindle or if it's 1.06 you have the BTR. The…

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Answer 6

The Axle part #T20BTR-EZ-6048 that you referenced has the BTR spindles on them which have the following dimensions: 1.00 inch for the threaded portion 1.06 for the inner bearing surface 1.06 for the outer bearing surface 1.50 for the seal inner…

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Answer 7

BTR and BT8 are the reference numbers for a standard trailer spindle size. When picking out a hub for a trailer you have to make sure that the hub is designed to fit the spindle. What you will need to do is measure spindles on your trailer where the…

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Answer 8

It sounds like you have a pretty nice trip planned! Bias trailer tires do not have a set range you can travel as they meet DOT standards for a tire. With that said before you start your trip I would make sure to check your tires for any dry rot or…

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Answer 9

If you are looking to order a new axle for your 5 foot wide trailer you will need to determine what the hub face to hub face dimension you would need to clear your trailer that is 5 feet (60 inches) wide. You will also need to know the width of your…

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Answer 10

When measuring for bolt pattern on an even bolt pattern you would measure from the center of one hole to the center of the hole diagonally across from it. In your picture you started measuring at the 1 inch mark. So if the adjacent measurement is…

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Answer 11

The hub you are looking for is the part #AKIHUB-440-2-EZ-2K which is a pre-greased idler hub with a 4 on 4 inch bolt pattern that has both bearings with an inner diameter of 1.06 (1-1/16) inch like you need.

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Answer 12

What I would recommend you do is extract as much of the old zerk fitting as you can and then going forward grease that hub by hand and you'll be totally fine if not better off than using the grease fittings. It's pretty easy to overfill EZ…

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Difference Between BTR and BT8 Spindles

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