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4.6 out of 5 stars. 125 reviews
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Carry-On Trailer 3,500 lb. Idler Axle, 88 in. Hub Face

Carry-On Trailer 3,500 lb. Idler Axle, 88 in. Hub Face

Item # 17542399

$329.99
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$55/mo.†  suggested payments with 6 Months Financing or earn $16 in Rewards+ on this purchase.

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Grassland (franklin) TN

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The Carry-On Trailer Idler Axle has a 88 in. hub face and 74.5 in. spring seat spacing. The idler axle fits 5-lug wheels with 4.5 in. bolt pattern. The round steel tube design of the Carry-On Trailer idle axle offers long-term strength and reliability. The idler axle has a 3,500 lb. maximum weight capacity.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

  • Round steel tube design for durability
  • 3,500 lb. capacity for each Carry-On Trailer idler axle
  • Hub face spacing on the idler axle: 88 in.
  • Spring seat spacing on the idler axle: 74.5 in.
  • Carry-On Trailer idler axle fits 5-lug wheels with a 4.5 in. bolt pattern

Q&As

1 - 10 of 58 Questions

Q: I have a carry on trailer 7x12gwatv need a axle

3 months ago
1 Answer
  • A: The axle part number is 3K9380EZ. You will have your TSC store order it for you.
    3 months ago
    Helpful?

Q: is this a straight or cambered axle?

3 months ago
1 Answer
  • A: This is a cambered axle.
    3 months ago
    Helpful?

Q: What is the thread size and pitch of lug bolt?

8 months ago
1 Answer
  • A: The knurl diameter is .62 flute OD. The threads are 1/2" x 20 threads per inch.
    8 months ago
    Helpful?

Q: Whats the measurements from spring to spring on 3500 lb idler axle 88 in. Face?

8 months ago
1 Answer
  • A: Center to center on the leaf springs is 74 1/2".
    8 months ago
    Helpful?

Q: I just assume that these are pre Lubed ? But i only replaced one on my trailer and this one get significantly warmer than the one I already had installed. I looked in the hub and I can visually see some grease should I put a pump or two ?

9 months ago
1 Answer
  • A: Go ahead and pump one shot of grease in. If it still gets significantly warmer then back off the castle nut one notch.
    9 months ago
    Helpful?

Q: What’s the shaft diameter?

a year ago
2 Answers
  • A: The spindle diameter that the hub rides on is tapered. The inside bearing will be a 1 3/8" diameter and the outside bearing will be a 1 1/16" diameter.
    11 months ago
    Helpful?

Q: What measurements are important besides the width and the mounting plates? How can I tell if the bolt patterns on the wheels will match the wheels I have? Can I use the mounting clamps that are there or should I replace them?

a year ago
2 Answers
  • A: After the width and spring centers the bolt pattern on the hubs, 5 Bolts on 4 1/2" centers. Usually the spring mounts (mounting clamps are OK.
    a year ago
    Helpful?

Q: how do you measure hub face dimensions?

a year ago
1 Answer
  • A: On the axle you have the wheel studs for mounting the tires. At the base of the wheel studs you have the hub face. So measure from face of hub to face of hub for your hub face dimension.
    a year ago
    Helpful?

Q: My old axel is square, will this axel still work

a year ago
2 Answers
  • A: Sir your old axle being square sounds to be a Torsion Axle. The torsion axle is rubber-cushioned for a smooth, quiet independent ride. The rubber-cushion is inside the square tube. The round axle would have to have leaf spring mounts added to your trailer. I would suggest you get a replacement torsion axle.
    a year ago
    Helpful?

Q: What is center to cener measure on the springs

a year ago
1 Answer
  • A: Center to center on the spring mounts is 74 1/2".
    a year ago
    Helpful?
1 - 10 of 58 Questions

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Reviews

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Overall Rating

4.6
44 out of 47 (94%) reviewers recommend this product

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1 to 4 of 125 Reviews .
1 – 4 of 125 Reviews
Knoxville, Tennessee
Review 1

Didn't fit

8 months ago
I measured my current axle as described in the how to order guide and the axle i recieved, though labeled by the manufacturer as the correct axle, did not match the dimensions I measured. There could have been a misunderstanding in the directions (although "hub face" seems to have only one possible meaning to me) but a simple diagram showing the dimensions at different points on the axle I wished to buy would have prevented any confusion.
SweepstakesYes

No, I do not recommend this product.

Response from Carry-On Trailer Customer Service:
8 months ago
Carry-On Trailer Customer Service
The 3K8874EZ axle for example has a hub face to hub face dimension of 88". The center to center of the spring mounts is 74 1/2". The EZ is for easy lube access for the grease. Carry-OnTrailer
Hanson, Ma
Review 1

perfect fit

a year ago
perfect fit direct replacement
Fl
Review 1

Didn’t fit

a year ago
Didn’t fit as required

No, I do not recommend this product.

Response from Carry-On Trailer Customer Service:
a year ago
Carry-On Trailer Customer Service
Call Carry-On Trailer Customer Service (800) 240-3121 Ext. 1915. Carry-OnTrailer
Ponca City, Oklahoma
Review 1

3500 lb axle

a year ago
Great price and good quality!
SweepstakesYes

Yes, I recommend this product.