The length of the bearing surface without the thread/seal is 3.38". The bearings are 1.0625". The castle nut is 1"-14.
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Ultra-Tow 2000-Lb. Capacity Spring Trailer Axle with Adjustable Spring Mounts, 54in. Hub Face, 38in.–44in. Spring Center, 59in.L, Straight

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- Adjustable spring mounts offer a variety of mounting positions
- Fast Lube spindles allow you to re-grease the bearings without removing the hubs
- Stainless steel wear sleeves prevent rust from wearing on the rubber oil seal
- 1.5in. square tube steel axle is hot dip galvanized with adjustable spring centers
- Can be under- or overslung
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Axle beam with adjustable spring mounts (1) Hardware kit (castle nuts, cotter pins, washers)
Features + Benefits
- Adjustable spring mounts offer a variety of mounting positions
- Fast Lube spindles allow you to re-grease the bearings without removing the hubs
- Stainless steel wear sleeves prevent rust from wearing on the rubber oil seal
- 1.5in. square tube steel axle is hot dip galvanized with adjustable spring centers
- Can be under- or overslung
- Straight axle
- 2,000-lb. capacity
- 54in. hub face
- 38in.–44in. adjustable spring centers
- 59in. overall length
- 1-1/16in. inner bearing
- 1-1/16in. outer bearing
- 1-1/4in. seal
Key Specs
| Attribute | Specification |
|---|---|
item# | 49090 |
Brand | Ultra-Tow |
Manufacturer's Warranty | 1 year limited warranty |
Ship Weight | 13.6 LB |
Max. Spring Centers Length | 44 in |
Min. Spring Centers Length | 38 in |
Weight Capacity | 2,000 lb |
Product Type | Spring Axle |
Axle Tube Type | Square |
Seal Size ID | 1.25 in |
| Attribute | Specification |
|---|---|
Bearing Size ID | 1.063 in |
Bearing Size OD | 1.063 in |
Axle Outside Diameter | 1.5 in |
Springs Included | No |
Cambered | No |
Hubs Included | No |
Brakes Included | No |
Track Length | 54 in |
Adjustable Bracket | Yes |
Reviews
Questions & Answers
Questions
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· 2 years ago
What length is bearing surface only? Not including thread/seal area. Previous Q&A states square tube alone was 54” long which only leaves 2.5”/side for hub on 59” axle. Castle nut size? Thanks
1 answer-
UltraTowExpert12· 2 years ago
Helpful?
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· 3 years ago
What's the spindle size?
1 answer-
UltraTowExpert12· 3 years ago
The spindle measures 4-13/16" long overall. This is measured from the end of the threaded section to the end of the 1-1/4" diameter seal section. It measures 3-3/8" long not including the threaded end. The diameter of the spindle is 1-1/16".
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· 4 years ago
How long is the round axle stem? I need 4" replacing a 59" an 1.5"square overall length axle will this work?
1 answer-
UltraTowExpert29· 4 years ago
The smaller diameter section of the spindle measures 4.18" to the very end of the spindle (including threads).
Helpful?
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· 4 years ago
I have hubs on hand that have 1 1/16" bearings, but their grease seal is 1 1/2". Will those work with this axle, which has a 1 1/4" grease seal? Thanks
1 answer-
UltraTowExpert12· 4 years ago
The seal size should also match up to prevent any grease from leaking too much.
Helpful?
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· 4 years ago
CAN THIS BE USED WITH REGULAR TIRES THAT DONT NEED HUBS FOR A LAWN TRAILER
1 answer-
UltraTowExpert12· 4 years ago
If used without hubs, the spindle on this axle requires wheels with a 1-1/16" inner and outer bearing bore diameter.
Helpful?
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· 4 years ago
Is the axle hollow?
1 answer-
ProductExpert30· 4 years ago
The tube axles are hollow.
Helpful?
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· 4 years ago
What other parts do I need to complete the axle with hubs? Going to want a 4 lug hub.
1 answer-
UltraTowExpert29· 4 years ago
Please see our item #57224 and 572241 for 4-lug hubs that fit this axle.
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· 5 years ago
What size spring leaf center bolt fits this spring mount
1 answer-
UltraTowExpert7· 5 years ago
The bolt hole size for the spring seat is 5/8".
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· 5 years ago
How do the hubs attach to this axle?
1 answer-
UltraTowExpert29· 5 years ago
This axle will include castle nuts and cotter pins to keep the hubs on the spindles of this axle.
Helpful?
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· 5 years ago
Is it galvanized
1 answer-
UltraTowExpert13· 5 years ago
This is a hot dipped galvanized axle.
Helpful?
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Accessories We Recommend
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Warranty
Manufacturer's Warranty
1 year limited warranty
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Specifications
44 in
48 in
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38 in
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2,000 lb
2,000 lb
1,250 lb
Spring Axle
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Parts
Square
Round
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1.25 in
1.25 in
1.25 in
1.063 in
1.0625 in
1.063 in
1.063 in
1.0625 in
1.063 in
1.5 in
1.75 in
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No
Yes
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No
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No
Yes
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No
No
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54 in
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Yes
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5
4
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4.5 in
4 in
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