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Home > Spindles
Spindles Products (Total Items: 5)
Trailer Spindle 1.5" Round x 8.25" Length, #84 (1,750 lb Capacity) with Brake Flange Welded on Face
Trailer Spindle 1.5" Round x 8.25" Length, #84 (1,750 lb Capacity) with Brake Flange Welded on Face

Part Number: ST-R20484-1.500FM

 0 Review(s)
Only $31.63
Trailer Spindle 1.5" Square x 8.25" Length, #84 (1,750 lb Capacity) with Brake Flange
Trailer Spindle 1.5" Square x 8.25" Length, #84 (1,750 lb Capacity) with Brake Flange

Part Number: ST-SP20484F

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Only $40.30
Trailer Spindle 1.75" Round x 8.25" Length, #84 (1,750 lb Capacity)
Trailer Spindle 1.75" Round x 8.25" Length, #84 (1,750 lb Capacity)

Part Number: ST-R20484

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Only $25.00
UFP Trailing Arm Replacement Torsion Spindle #36233 with Hardware
UFP Trailing Arm Replacement Torsion Spindle #36233 with Hardware

Part Number: ST-36233

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Only $60.00
UFP Trailing Arm Replacement Torsion Spindle Zinc Plated #36090 with Hardware
UFP Trailing Arm Replacement Torsion Spindle Zinc Plated #36090 with Hardware

Part Number: ST-36090

 1 Review(s)
Only $64.00
 
 

So what exactly is a spindle?

Before you can determine which spindle you need, you need to understand what exactly a spindle is and why it is so important. In short, you will find a spindle at the very center of a trailer wheel. It is what the wheel hub and bearings rotate around. Without a spindle you would not be able to have a functioning wheel.

Unfortunately, most people do not even think about their spindles until they need to be replaced. However, this important part to your trailer should never be forgotten. Whether you are hauling boats, cars, or jet-skis, spindles are a vital piece to proper operation. They can be found on each end of the axles. As you begin to move your trailer, the wheels start to turn. How are they able to turn? Because of the spindles, of course! The small, narrow, circular objects provide the surface needed for the rolling movement to occur. Keep in mind that the wheel hub and spindle never actually touch thanks to the inner and outer wheel bearings. The entire wheel revolves around the spindle, making it the literal center of it all.

Okay, I understand what a spindle is, but how do I find the right replacement one for my trailer?

The good news is that all bearing manufacturers use the same numbering scheme. These common numbers can be easily found stamped on each bearing. Since these numbers are universal, it is very easy for us to determine what spindle you need based solely on the type of bearings that you have.

So where can you find the bearings? First, you will usually find both a front and rear bearing in a hub. The front can be identified because it is the one closest to the street, and the rear bearing is consequently closest to the trailer. It gets a little complicated because not all bearing pairs are the same size. This is because some spindles are tapered while others are straight. The tapered spindles require a bigger rear bearing than the front one. However, should your spindle be a straight spindle, the front and rear bearing sizes will be identical.

Once you have identified and recorded the bearing sizes, you can simply use the following chart to determine which spindle you need to make your trailer operational again.

Trailer Bearing Part Number
Axle Spindle Diameter (in)
L44649 1 1/16 in
L68149 1 3/8 in
L44643 1 in

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