You would need a replacement axle if you have noticed tread wear due to improper tire alignment, which is the result of a bent trailer spindle on one side. In addition, another common reason for axle damage results from over loading the trailer, which will result in noticing tread wear on the insides of both trailer tires. If you trailer experiences exposure to corrosive environments, such as a boat trailer, rust damage is another possible culprit for axle replacement.
This 3,500 lb Capacity Trailer Drop Axle is made with 3/16" Steel Wall Thickness, measures 2 3/8" in diameter, and features #84 Spindles welded into the beam. This listing is for the Beam Only. This Axle is for trailers with a Leaf Spring Suspension. We offer all additionally needed components separately for you to build the exact axle kit that you are needing for your trailer.
This Drop Portion of this axle is the Trailers Spindle. The Spindle has a 4 inch Drop to it, which is then Welded into the Beam of the axle. This Drop lowers the Frame of the Trailer 4 inches. Typically you would be replacing a Drop axle with a Drop Axle. If you are going from a Straight axle to a Drop Axle, you would see your Frame, and Fenders, drop 4 inches, so some adjustments might need to be made.
The Tapered Spindle design of this 3,500 lb Drop Axle has the following features:
Inner Bearing Surface: 1 3/8" ( Accommodates Bearing 68149)
Outer Bearing Surface: 1 1/16" ( Accommodates Bearing 44649)
Grease Seal: 1.72" Grease Seal Surface
This Listing is for a 85" Hub Face Axle that does not have the Spring Seats welded to the Axle. The Picture with this listing shows spring seats mounted to the axle, which is just for the purpose of a product photo. This Axle will not have the spring seats welded to the beam, but they are included with the purchase of the axle. This 85 inch measurement is also referred to as the Track Measurement, or Center of Tire Measurement.
Specific Axle Specifications for this 3,500 lb Trailer Drop Axle:
Hub Face: 85"
*Refers to the Outside Face of one Hub as it meets the wheel to the outside face of opposing hub as it meets the wheel
Brake Flange Measurement: 79"
*Refers to the Outside of one Brake Flange to the outside of opposing brake flange
Overall Axle Length (Tip to Tip): 90"
*Refers to the tip of one side of axle spindle to the opposing tip
Acceptable Spring Seat Ranges: 68" - 73.5"
*Refers to Measurement from Center of One Leaf Spring to Center of Leaf Spring on opposing end of axle beam
*Per Manufacturer Specifications, for this Axle to achieve its 3,500 lb carrying capacity, this length of axle should only be used within the above mentioned Spring Seat Ranges. Using this axle with Spring Center measurements outside this range could result in improper fit (clearance) or premature axle damage (result of increased leverage).
No Camber: Leaf Springs can be mounted on top of or underneath axle
Spring Seat Location: Included Spring Seats can be welded for Over Slung or Under Slung Leaf Springs.