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Round A-Frame Trailer Jack - Sidewind - 15-5/8" Lift - 3,000 lbs - Black
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Round A-Frame Trailer Jack - Sidewind - 15-5/8" Lift - 3,000 lbs - Black

Part Number: TJA-5000S-B
In Stock
$97.48
Trailer Jack
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Black powder coated A-frame jack has a retracted height of 8-3/8" and an extended height of 24". The external gearbox is easily accessible, and the zinc-finished sidewind handle arm provides a sleek look. Great Prices for the best trailer jack from etrailer. Round A-Frame Trailer Jack - Sidewind - 15-5/8" Lift - 3,000 lbs - Black part number TJA-5000S-B can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer Trailer Jack - TJA-5000S-B

Highlights

  • 5,000-Lb Support Strength: Handles heavy trailer tongues with a 3,000-lb lift capacity for solid, steady parking.
  • 15-5/8" Lift Range: Raises or lowers quickly for hitching and leveling on a wide range of trailer heights.
  • Sidewind Ease: Vertical crank motion gives smoother, lower-effort lifting compared to top-wind styles.
  • Bolt-On or Weld-On Mount: Fits standard A-frame patterns with 3"-spaced elongated holes for flexible install.
  • Weather-Tough Finish: Black powder coat and zinc-plated handle resist rust through rain and road grime.
  • Simple Lubing: Built-in grease zerk makes servicing the gears fast to keep the crank turning smoothly.

Features to know about

Smooth, Steady Lift: Sidewind Handle with Built-In Grease Zerk

Cranking up a loaded trailer should feel solid and predictable, and this jack really nails that. The sidewind handle sits off to the side where it’s easy to reach and turn without banging your knuckles, and the gearing feels smooth even under load. The built-in grease zerk makes lubricating the gears quick—just give it a pump with a grease gun and it turns like new again. With a 3,000-lb lift and 5,000-lb support capacity, it’s built to raise heavy trailers without strain.

Perfect Fit Every Time: Standard A-Frame Mounting Pattern

Swapping out a worn-out jack doesn’t have to mean drilling new holes. This one has the standard 3-inch A-frame bolt pattern with elongated holes for easy alignment, so it bolts right into place or can be welded on if you prefer. The outer tube measures 2-1/4" and the inner tube 2", giving you that solid, snug fit common to quality A-frame jacks. Whether you’re upgrading from a tired factory unit or replacing a failed electric, it installs clean and works right away.

Built for the Long Haul: Corrosion-Resistant and Accessible Design

Rain, dust, and road grime don’t bother it. The black powder coat finish on the outer tube keeps rust in check, while the zinc-finished handle arm holds its shine and resists corrosion. The external gearbox is easy to access if you ever need to clean or re-grease it. With 15-5/8" of lift, it raises from 8-3/8" retracted to 24" extended, giving plenty of range for uneven ground or tall couplers.

Low Effort, High Leverage: Smooth Gearing for Heavy Loads

Users noticed right away how much easier this jack is to turn compared to older top-wind designs. The sidewind crank’s 8" radius gives you good leverage, so even lifting a fully loaded trailer tongue feels controlled rather than hurried or jerky. The gearing is set up for power over speed, which means steady, confident lifting and precise leveling. It’s the kind of feel that makes you trust the jack every time you hitch or park.

Flexible Setup: Add the Footplate or Drop Leg You Want

You can pair it with a compatible footplate like #JF-99 or drop leg #JF-1005H-Z, depending on how much ground clearance or adjustability you want. Since they slide into the 2" inner tube, swapping between accessories is quick. That means you can tailor your setup for whatever surface you’re parking on—gravel, dirt, or concrete—and still get reliable support without stacking blocks under the coupler.

Specs

Weight and Capacity

  • Lift capacity: 3,000 lbs
  • Support capacity: 5,000 lbs

Dimensions

  • Bracket height (from bottom of inner tube to bottom of bracket): 8-3/8" Retracted, 24" Extended
  • Lift: 15-5/8"
  • Clearance: 15" from bottom of bracket to top of jack
  • Outer tube diameter: 2-1/4"
  • Inner tube diameter: 2"
  • Handle radius: 8"

Dimensional diagram of the etrailer Round A-Frame Trailer Jack TJA-5000S-B showing measurements for bracket height, lift travel, and overall jack dimensions.

Warranty

  • Warranty: 1-Year warranty

TJA-5000S-B Ram Round A-Frame Trailer Jack - Side Wind - 15-5/8" Travel - 5,000 lbs

Compare to Bulldog BD1700100317

Similar to BD1550100317 and BD1550101344 Bulldog A-Frame Trailer Jacks (But with Extra Screw Travel!); Similar to BD1700100317 and BD1700100301 Bulldog A-Frame Trailer Jacks (Except with Powder Coat Finish)





Customer Satisfaction Score:

Ratings & Reviews

4.8

1081 reviews
5 Stars
(936)
4 Stars
(96)
3 Stars
(24)
2 Stars
(10)
1 Star
(15)
Review Sort Icon
by:
2015 Jayco Jay Flight Swift SLX Travel Trailer
Easy install!! works great, had to replace the original tongue jack that came with the camper when we bought it new in 2014. Delivery was quick and install was a breeze. Thanks Etrailer!!!
Nick S. profile picture
Etrailer Expert

Nick S.

11/3/2025

It looks great on the trailer! I am glad the install was easy for you on the jack. What kind of camper did you end up installing it on?

Debra profile picture

Debra

11/3/2025

@NickS 2015 Jayco SLX 195RB
by:
2019 Jayco White Hawk Travel Trailer
Purchased for my 2019 Jayco White Eagle RV trailer. I bought the 3,000 lbs sidewind jack after my second electric jack broke. No regrets, other than I should have replaced it sooner. This cranks smoothly. The inner tube doesn't sway as the electric one did.
by:
Though I have not opened the jack yet and installed it I have very confidence that all will be good and will work properly. I have never had a bad product from you folks. I also really enjoy following the tracking from packing all the way to delivery. It gives me the name and photo of the staff that is doing the work. It’s like being at the candy store. Watching the person putting the candy in the bag wrapping it and handing it to you with a smile. Thank you so much for putting a face with the name all th way through the process.
James D. profile picture
Etrailer Expert

James D.

7/16/2026

Paulie we really appreciate your kind words, love to hear you've had such positive experiences with us over the years. We really like the "candy store" comparison, it paints the picture of the experience we're hoping to create. Our team works hard to provide great service and putting a face to the name is one way we like to make the process feel a little more personal. We appreciate you choosing etrailer!

by:
I purchased this JA-5000S-B Sidewind jack for my 20' Car Hauler because I added a Harbor Freight toolbox that was taller than my top wind jack. This one is somewhat taller than the one replaced and moves the wind handle toward the truck. In my case the tailgate still drops and clears the handle by 10" or so. The jack is a little slower than the last one but has a higher weight rating (5000 lbs) etrailer always helps with the selection and has been a great resource.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

4/11/2025

Perfect fit! What car(s) do you haul on the trailer?

by:
The Trailer Jack arrived on time.
Take me about 1/2 hour to put it on my utility trailer everything fit perfect. Be sure and save your old nuts and bolts or buy new ones with Washers
by:
Very happy with my upgrade!!! My work trailer came with a jack that you could not grease or clean. I live rural, and my job trailer sees a lot of dirt roads. My old one was so hard to crank. It was a top crank. I upgraded to this jack, it was a direct fit!!! No drilling, removed the jack, used same bolt s and bolt holes!!! It is so easy to jack up my trailer now!!! Love this thing. And I can grease it!!! Great people to do business with, Great shipping, and order updates!!! Will be doing business here again. Thank you Etrailer!!!
Kate F. profile picture
Etrailer Expert

Kate F.

3/4/2026

Glad we had the right fit for such and easy swap Jason! Thanks for the kind words, I never get tired of hearing that we are doing things right! Do you do mainly residential/business electric, or do you some RV as well?

by:
Just installed. Information on website along with FAQs gave all the information I needed. Perfect fit. Smooth shipping process. Works great. Very pleased start to finish. Well done etrailer.
by:
good quality, heavy duty tongue jack. Bought to replace a broken electric one.
by:
I received the trailer Jack as scheduled. It was easy to install and is much easier to use than the one I replaced.
by:
I modified spare tire location (needed more tongue weight), so replaced top mount crank jack with side wind version. Shipping speed was upgraded sans asking and received item just before my next trip. Installed in 5 minutes and jack is much more ergonomic than original. Whenever I need anything trailer or pick up truck related, I don't even bother shopping around, for etrailer pretty much has everything! Customer service is outstanding even with returns or replacements. Completely satisfied with product and service.
Thanks for everything Etrailer
Roger S. profile picture

Roger S.

8/12/2018

Still working fine. Smooth and easy operation. I seriously doubt that I’ll have any issues with the side wind trailer jack.

by:
The elongated holes fit the existing Pace Cargosport's 3" & 3 1/4" spacing pattern using the existing bolts and washers. The gearing makes lifting the tongue an easy one handed operation. I can spin the crank with one finger when it is unloaded, which is good because the gearing tradeoff is more spinning than the previous topwind.
by:
The holes for the locking pin don't match up. But we only use the wheel to move the camper so no problem.
by:
2020 Grand Design Reflection Fifth Wheel
Super easy swap out with old jack. I selected this hitch primarily for the serviceablity. Low gearing and smooth operation makes raising and lowering the trailer a breeze.
by:
Fits perfectly and extremely easy to install. Quick shipping and outstanding communication.
by:
Direct bolt on replacement. Sturdy, well built. Packaged securely and arrived quickly.
Paul profile picture

Paul

5/7/2026

Trailer used by a construction crew, they can be pretty rough on equipment and its held up well.

by:
It mount up just like the one that I talk off. The one that went bad had a handle on the top and I may need to lower the ball 1 inch on my truck to avoid the the tailgate from hitting the handle of the jack.
Jim
by:
The trailer jack is exactly what I needed and the quality is just perfect! My only issue was I ordered 6 and they were all loose in a big box which ultimately started to destroy the box once delivered. The jacks were a little damaged but not worth doing anything about.
by:
Great replacement for older trailer jack and drop leg.
by:
Really great Jack. The gearing is great for my Airstream 28ft trailer. I was frustrated with the prior electric jack not working from time to time leaving me unable to drop the trailer without using the truck jack.
by:
So easy to install and use! What a relief to replace the old rusted, unusable trailer jack. The gearing makes raising the trailer so easy a child could raise the trailer.
by:
Heavy duty and well built.
by:
My old trailer jack broke under the weight of a full trailer. This new jack’s extra capacity is greatly welcome. It fit right into the place of the old one and the hardware was reusable, even the foot plate!
by:
perfect fit
by:
I've had this installed on my utility trailer for about a year now. It works great. I've had some pretty big loads in it and have had no issues raising and lowering it with this jack.
by:
It’s amazing!
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See what our Experts say about this etrailer Trailer Jack

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    We have a really great trailer jack replacement for what you have with the etrailer Sidewind Jack part # TJA-5000S-B. This is a sidewind jack like what you have but as you can see in the attached install video it can install with the handle on the front side of the trailer. I also attached an install video for this jack for you to check out as well.
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    Hey Ed. I'm struggling to see how you could modify the etrailer Bolt-On Swivel Mounting Plate for jacks # e52JR to work with your round tube frame. I guess it could be done but might not be the best fit. I think you'd have better luck using something like Pipe Mount Swivel Style Trailer Jack with Foot - Sidewind - 10" Travel - 2,000 lbs # DL22685 which comes with a mount that would be easier to shape to your round frame and weld it on. Do you not have a hole in the middle of the tongue...
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    I looked up your trailer and found that it's a standard A-frame trailer so for a jack the # TJA-5000S-B which is a very popular option would fit and work well. It's a sidewind trailer jack with a 5,000 lb capacity.
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  • Jack Foot For etrailer Round A-Frame Trailer Jack TJA-5000S-B
    Hi Morgan! The tube on the Dutton-Lainson Replacement Jack Foot # DL22542 is the exact same as the tube on the etrailer Round A-Frame Trailer Jack - Sidewind - 15-5/8" Travel - 5,000 lbs # TJA-5000S-B, so it will not be a fit, unfortunately. That said, we have a few options you might be interested in and I have them listed below: Ultra-Fab Detachable Footplate w/ Pin for 2-1/4" Diameter Jacks # UF52FR etrailer Footplate for 2,000-lb and 5,000-lb Round, A-Frame Jacks # JF-99 Replacement...
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  • Does etrailer Round A-Frame Jack Come Pre-Greased
    Hey David, yes the Round A-Frame Jack part # TJA-5000S-B that you referenced is pre-greased with a white lithium grease complex. In an application like this I wouldn't worry too much about grease compatibility. In a wheel that turns really fast significant heat could be generated that is a different story but for a jack I wouldn't stress about it.
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  • Inner and Outer Tube Dimensions for etrailer Trailer Jack # TJA-5000S-B
    I went out to the warehouse to measure a etrailer Round Jack, # TJA-5000S-B. The outer tube diameter is 2-1/4 inches. The inner tube diameter is 2 inches. I used digital dial calipers to take the measurements.
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  • What Might Cause 12 Volt 7-Way Circuit to Blow When Using Powered Trailer Jack
    Is the jack overloaded which is causing the excessive amperage draw? What jack do you have? Can you see an amperage rating on it anywhere which would give you an idea what it should be drawing? It's possible the jack screw/gear is damaged too which would cause the motor to have to work too hard for standard use which might overdraw it's power circuit.
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  • Trailer Jack to Avoid Tailgate Clearance Issues
    There are a few solutions for your tailgate to clear the jack on your trailer. I recommend to use a longer ball mount like # D-26, that would move the trailer back further away from the truck and give you clearance you need. If you know what size the hitch on your vehicle is, the rise or drop of the ball mount for your trailer, if you're using weight distribution or not, and the measurement from the center of the hitch pin hole to the center of the ball hole I can make the best recommendation...
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  • Mounting Hole Size for A-Frame Trailer Jacks
    The mounting hole dimensions of A-frame jacks are a standard 3 inches apart on center, so you will need to weld your new jack on. I highly recommend the etrailer Round, A-Frame Jack # TJA-5000S-B, which has a 5,000 lb capacity and will give you 15" of lift. It has an outer tube diameter of 2-1/4" and sidewind handle; for a footplate you would want # JF-99. This jack has been highly praised by our customers. I've added links to video reviews of this jack for you to take a look at as well.
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  • Mounting Hole Dimensions And Spacing For The etrailer Round A-Frame Trailer Jack # TJA-5000S-B
    Hey Robert, I've attached a diagram below showing the dimensions/spacing of the mounting holes for the etrailer Round A-Frame Trailer Jack # TJA-5000S-B. If you need any other measurements just let me know and I'd be happy to check for you.
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  • Hardware Typically Used to Install A-Frame Trailer Jack
    You can use three 3/8-16 grade 5 bolts to install the etrailer jack # TJA-5000S-B or any other style A-frame jack; though we do not carry the hardware it is available at any hardware store. I attached an install video for this jack for you to check out as well.
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  • Size of Bolt Needed for A-Frame Jacks
    The etrailer and Pro Series A frame jacks will use 3/8 inch bolts, which is the standard size for A frame jacks and couplers. For install details and some product demonstration videos, click the provided links.
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    Hey Alan, so the Ram Jack part # TJA-5000S-B that you referenced does have a wheel caster available for it with the part # JC-101.
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  • Recommended Replacement Jack for an A-Frame Trailer
    Yes, it is! The Round A-Frame Trailer Jack item # TJA-5000S-B fits the standard a-frame bolt pattern. This jack has a 3,000 lbs capacity and a travel distance of 15-5/8".
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  • Can Round Tube A-Frame Jack Replace a Square Tube Jack
    Hey Darcy, yes a round A-Frame trailer jack like the part # TJA-5000S-B like what you referenced would work in place of a square tube a-frame jack as the mounting brackets are the exact same. Did your old jack fail or get hard to crank?
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  • Looking For A-Frame Trailer Jack With 2-1/8" OD Tube Or Smaller
    Hello Jason, thanks for reaching out. Pretty much all the round-tube A-frame jacks we carry have a 2-1/4" tube which is standard. Right now we have only one jack with a smaller tube, the A-Frame Trailer Jack # DL22530. This has a 1,000 lb capacity and a 2" OD tube. We do not have anything with a 2-1/8" tube.
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  • Will the Footplate on You etrailer Weight Scale Also Work on the etrailer Round A-Frame Trailer Jack
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  • Mounting Hole Dimensions and Spacing on etrailer.com A-Frame Trailer Jack # TJA-5000S-B
    The Round A-Frame Trailer Jack # TJA-5000S-B has mounting holes that are elongated. The actual holes are 3/4 inch long and 7/16 inch wide. That gives you a minimum of 2-1/2 inches or maximum of 3-3/4 inches to the nearest or farthest part for mounting. I've attached a photo to assist.
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    Image 1 for


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