How to Tell if Trailer has a BT8 or BTR Spindle Installed

Question

Question:

I need a hub, wheel and tire, lug nuts. Its a 1 inch spindle shaft. How do I know if it is a BT8 or BTR or what?

asked by: Greg B

0

Expert Reply:

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 dimensions of 1.06 inch for outer and inner bearing plus 1.50 inch where grease seal would install. That would require an idler hub part # AKIHUB-545-2-G-2K.

expert reply by: Jameson C

0

Jay

6/8/2025

what hub kits will fit on 0.749" spindles

Jameson C.

6/9/2025

@Jay Nothing that we have as that's not a current spindle size that is supported. Normally in this situation easiest route to go is to replace the axles.

Jay

6/12/2025

@JamesonC the axle is a 3 sided channel. 1 1/16" i d . do you carry a square ended replacement spindle i can weld in that has a 1" straight hub 4x4.5 / complete kit with bearing buddies ?

Jameson C.

6/16/2025

@Jay We do have a square spindle that is 1 inch in diameter with the part # TRU97FR. The square portion of the spindle is 1.5 inch by 1.5 inch.

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Answer 2

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Answer 3

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How to Tell if Trailer has a BT8 or BTR Spindle Installed

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