Heavy trailers do not fail politely. A jack that is undersized, mounted to a tube that is too thin, or built with a screw that was never meant to carry a real tongue load will either strip its threads or drop the coupler onto your foot the first cold morning of the season. Choosing among the best trailer jacks for heavy trailers is less about brand prestige and more about three numbers: lift capacity, static support rating, and how much of that rating survives a side load while the trailer is parked on uneven ground.
We spent weeks comparing square tube and round tube manual jacks, 12V electric tongue jacks, and the bolt-on mounts that retro fit to an existing A-frame, then read through thousands of owner reviews to separate what holds up from what just looks heavy. The result is a lineup that covers the full range of heavy-trailer work, from an 8000 lb weld-on manual jack to a 7500 lb electric unit you can install over an old manual jack in under half an hour.
One thing surprised us: how much of the conversation online still centres on jacks rated for a 3500 lb travel trailer. If your trailer carries a GVWR sticker above 8000 lb, or you tow a gooseneck, dump, fifth wheel, or heavy horse trailer, most of that advice does not apply to you. This roundup is written for the heavier half of the market, and it uses the 10 to 15 percent of GVWR tongue weight rule to size every recommendation.
Before we get into the picks, here is the short version. The VEVOR TJD-7000S is the strongest all-round manual jack in the group, the Curt 28512 carries the highest tongue weight rating we found, and the FZZD HZ-05 gives you the most travel per dollar in a bolt-or-weld package. If you would rather press a switch than turn a handle, the Husky HB4500 has the deepest review history of any electric jack we tested against.
Table of Contents
Top 3 Picks for Heavy Trailer Jacks (October 2026)
VEVOR TJD-7000S 8000 lb
- 8000 lb lift capacity
- Square tube carbon steel
- Direct weld mount
- 15-1/4 inch lift with drop leg
Curt 28512 10000 lb
- Rated to 12000 lb tongue weight
- 12-3/8 inch vertical travel
- Side-wind handle
- Limited lifetime warranty
FZZD HZ-05 8000 lb
- 28.6 inch vertical travel
- 5 height levels
- Bolt-on or weld-on
- Oversized base plate
All 12 Heavy Trailer Jacks Compared in 2026
The table below is the one-page version of this roundup. Every jack listed here has a real owner review base behind it, and every one is sold for trailers in or near the heavy-trailer class rather than a light utility trailer.
| Product | Specs | Action |
|---|---|---|
| VEVOR TJD-7000S 8000 lb Square Weld-On Jack |
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Check Latest Price |
| Curt 28512 Side Wind Square Jack |
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Check Latest Price |
| FZZD HZ-05 8000 lb Long Travel Jack |
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Check Latest Price |
 FZZD HZ-07 8000 lb Swivel Weld-On Jack |
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Check Latest Price |
 SEALIGHT 8000 lb Multi-Stage Jack |
|
Check Latest Price |
 Husky HB4500 4500 lb Electric Jack |
|
Check Latest Price |
 TYT 8000 lb Square Weld-On Jack |
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Check Latest Price |
 YOMILINK 8000 lb Bolt-On Jack |
|
Check Latest Price |
 KYX 7500 lb Electric Tongue Jack |
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Check Latest Price |
 POLESTAR 5000 lb Electric Tongue Jack |
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Check Latest Price |
 VEVOR EJ5021B 5000 lb Electric Jack |
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Check Latest Price |
 RVMATE 5000-5500 lb Electric Jack |
|
Check Latest Price |
What is the best trailer jack for a heavy trailer?
The best trailer jack for a heavy trailer is the one whose static support rating exceeds your actual tongue weight by a clear margin, mounted on a tube thick enough to carry that load, and fitted with a foot that will not sink into soft ground. For most heavy enclosed, horse, and equipment trailers, that means an 8000 lb lift capacity manual square tube jack with a multi-level drop leg. For gooseneck, dump, and fifth wheel work, you need tandem landing gear rather than a single tongue jack.
Match the drive to the use. Manual square tube wins on farms and work sites where you crank it a few times a day and nothing else. Electric wins when you hook up in the dark, unhitch on a wet campsite, or your tow vehicle is already loaded with gear.
How heavy of a trailer jack do you need?
Step one, find the GVWR sticker on the trailer frame, usually on one side of the A-frame or inside the neck of a gooseneck. Step two, take 10 to 15 percent of that number as your working tongue weight. Step three, buy a jack rated roughly 20 to 25 percent above that figure, because static support rating and lift capacity are different numbers and you want margin on both.
Worked example. A 10,000 lb GVWR enclosed trailer puts about 1,000 to 1,500 lb on the coupler. A jack rated to support 12,000 lb of tongue weight, such as the Curt 28512, gives you real headroom. A 5000 lb jack technically clears the static load but leaves nothing for a side push on a gravel drive or a soft patch of lawn.
The 60/40 rule matters here too. A properly loaded travel trailer puts 60 percent of its weight behind the axle and 40 percent on the tongue. Overload the tongue and the trailer becomes a sail as well as a load, and the jack is the first part to feel it.
1. VEVOR TJD-7000S 8000 lb Square Weld-On Jack – our top manual pick
VEVOR 8000lbs Heavy-Duty Square Direct Weld on RV Jack, 15-1/4 Inches Lift, Adjustable Drop Leg, for Lifting RV, Horse, Utility, Yacht Trailers, TJD-7000S
8000 lb lift
24.88 in min height
52.6 in max height
Square carbon steel
Pros
- Square tube resists side loading
- Welds on with all hardware included
- Multi-level adjustable drop leg
- Owners replacing factory jacks call it a step up
Cons
- Loose internal clearances on some builds
- Occasional missing part in the box
- Entry-level galvanizing and powder finish
Square tube is the reason this is our first pick. Round tube jacks flex under a side load, and on a loaded trailer parked on a soft shoulder that flex is what strips the top threads. The TJD-7000S uses a carbon steel square body with a galvanized inner tube and a powder coated exterior, and at 23.4 lb it is light enough for one person to lift into position before welding.
The adjustment is generous for a direct weld jack. Lift range runs from 9.65 inches to 24.64 inches with a multi-level drop leg, and the listing shows a 24.88 inch minimum height and a 52.6 inch maximum lifting height. In practice that covers everything from a low utility trailer to a tall gooseneck deck.
Owners who weld for a living describe it as accurate to the listing and strong for the money, and several report replacing a much older factory jack with it. It comes with a crank handle and manual, and the direct weld mount means you are committing to this position permanently, so measure the tongue tube before you start with a grinder.
What gives us pause is the finish, which is functional rather than premium. Owners who live in wet climates note that the galvanizing and powder coat are thinner than what you get on a Curt or Husky, and a few have flagged tight or sloppy internal clearances that give the crank a vague feel rather than a crisp mechanical detent.
Who the VEVOR TJD-7000S suits
This is the jack for a builder or a farm owner who is welding a heavy enclosed, equipment, or flatbed trailer and wants a 8000 lb class jack that stays square under load. It also makes sense as a rebuild replacement for a cheap factory jack on an A-frame.
If you are not comfortable welding, or if you want to be able to move the jack later, skip to the bolt-on options further down. A direct weld mount is a permanent decision.
Where the VEVOR TJD-7000S falls short
It is not the choice for a saltwater boat trailer that sits in a ramp year round, where a heavier coating wins. It is also not the choice for gooseneck work, where the load sits far heavier than any single tongue jack is designed to hold.
Because the jack arrives bare, plan on having your own mounting plate or reinforcing plate if your tongue tube is thin wall. Welding a 8000 lb jack to a thin tube is how torsional fatigue cracks start.
2. Curt 28512 Side Wind Square Jack – the strongest tongue weight rating here
Curt 28512 Side Wind Heavy Duty Square Jack
10000 lb lift
12000 lb tongue weight
12-3/8 in travel
61.6 lb unit
Pros
- Highest tongue weight rating in the group
- Limited lifetime warranty
- Side-wind handle with integrated grip
- Retracts fully for towing
Cons
- Weighs about 62 lb
- Mounting hardware not included
- Shorter travel than tall-stroke jacks
Curt publishes two numbers and we read them carefully: 10,000 lb lift capacity, and a static rating to support 12,000 lb of trailer tongue weight. That second number is the highest static figure in this roundup, and for a trailer carrying a genuinely heavy tongue it is the number that should drive your decision.
At 28 inches retracted and 40-1/4 inches extended, it does not offer the towering stroke of the budget long-travel jacks. What it does offer is a side-wind handle with an integrated grip, so you lift the coupler without your knuckles fouling the tube, and it tucks down tight for towing.
Reviewers centre on three things: strength, the limited lifetime warranty, and easy side-wind operation. Curt is one of the few names in this category where a lifetime warranty on the mechanism is normal rather than promotional, and that matters more than any LED light when you are five miles from a road in February.
The black powder coat finish handles weather exposure well, and the unit is a direct weld mount with hardware not included, so add your own fasteners and a reinforcing plate if the tube is thin. At 61.6 lb, plan the install with two people or a lifting jack rather than a shoulder.
Who the Curt 28512 suits
This is the pick for someone building or re-equipping a heavy enclosed, dump, or equipment trailer who intends to keep it for a decade. A lifetime warranty on the working parts is the single strongest ownership signal we saw in this group.
It is also the right choice if your tongue weight is at the upper end of the 8000 to 9000 lb GVWR band and you want margin that an 8000 lb class jack simply does not offer.
Where the Curt 28512 falls short
Travel is the compromise. With 12-3/8 inches of vertical movement, a high-lift or lifted tow vehicle pairing can leave you short, which is why you should check your hitch height against the extended measurement before ordering.
The weight is a real inconvenience for a solo install, and the missing hardware means one more trip to the fastener supplier. If you want a jack that bolts on without a welder, this is not it.
3. FZZD HZ-05 8000 lb Long Travel Jack – best value manual
FZZD 8000 lbs Heavy Duty Trailer Jack, 28.6″ Vertical Travel
8000 lb capacity
28.6 in travel
4.7 to 33.3 in range
5 height levels
Pros
- Long 28.6 inch travel
- 5 levels of height adjustment
- Oversized base plate
- Textured extended handle
- Bolt or weld mount
Cons
- One owner reported a grinding feel after greasing
- Galvanizing is lighter gauge than premium brands
- Only one year warranty
Travel is the headline here. A 28.6 inch vertical stroke across a 4.7 to 33.3 inch range with five lock positions means this jack covers ground gaps and hitch heights that would leave a short-stroke jack stranded halfway. On a sloped site or with a lifted truck, that is the difference between hooking up and jacking in circles.
The side mount can be bolted or welded, which makes it the flexible choice if you are not certain you have found the final tongue position. Installation bolts and instructions are in the box, and at 28 lb it is manageable for a two person install.
Owners in coastal and salty environments report good corrosion resistance, which tracks with the galvanized heavy duty steel pipe construction and the oversized base plate that keeps the trailer from rocking while you crank. The longer textured handle is genuinely easier to grip than the flared handles on older jacks, and it gives you better control at the top of the stroke.
This is also one of the highest rated jacks in the group at 4.8 out of 5, with 89 percent of reviews at five stars, and several owners mention it outperformed pricier jacks they replaced. The main technical complaint we found is a slight grinding sensation in the screw mechanism on a single unit, even after greasing.
Who the FZZD HZ-05 suits
It suits anyone who is unhitching on uneven ground, working from a sloped site, or pairing with a tall or lifted tow vehicle where a standard stroke jack runs out of room. The five lock positions also make it easy to match a trailer to a ball mount at different heights.
For a boat trailer launching from a shallow ramp, that low end of the 4.7 inch range is the detail that matters. Most jacks cannot go that low without a drop leg already extended.
Where the FZZD HZ-05 falls short
The one year warranty is thin for a jack you plan to rely on, and the galvanized finish, while adequate, is lighter gauge than the powder coated premium units. If the trailer lives outdoors full time, expect to touch up scratches.
At 28 lb it is heavier than a 4500 lb electric unit, so a solo install on a tall tongue is awkward. Plan a helper or a small lifting jack.
4. FZZD HZ-07 8000 lb Swivel Weld-On Jack – folds flat on the tongue
FZZD 8000 lbs Swivel Trailer Jack, Weld-On Pipe Mount Tongue Jack
8000 lb capacity
Swivel weld-on
28.6 in travel
27 lb unit
Pros
- Swivels flat along the tongue for clearance
- Owners call it heavy
- strong and stable
- Easy weld-on mounting
- 5 position height adjustment
Cons
- Retracted length is fixed and not adjustable
- Some play in the mounting bracket
- Heavier than 4500 lb electric jacks
The swivel is what sets this apart. Instead of standing vertical on the tongue, the HZ-07 folds back horizontally alongside it, which is exactly what you want on a boat trailer where every inch of ground clearance matters at the ramp. It is also a tidier look on a trailer you park nose to nose with others.
Underneath it is the same 28.6 inch vertical travel and five level adjustment as the fixed-mount version, running from 4.7 to 33.3 inches. The lifting range matters more than the swivel for day to day use, and both are strong here.
Reviewers describe it as very heavy, strong, and stable for the money, and highlight how cleanly it mounts and how little effort it takes to raise the trailer. The ergonomic textured side handle and oversized base plate come up repeatedly as the details owners noticed first.
The alloy steel body carries a black spray coating for rust and corrosion resistance, which is a sensible choice for boat trailer use where a jack lives in spray and standing water. One buyer reported a specific fitment problem: the minimum retracted clearance is fixed, and it was too long for their low setup, so they stepped down to a lighter unit.
Who the FZZD HZ-07 suits
Boat owners launching from a shallow ramp, RV owners with a very low garage or storage clearance, and anyone who parks trailers nose in will value the fold-flat mount most. The 8000 lb rating also covers a large centre console or a small enclosed cargo trailer comfortably.
Because the swivel lets you reposition it, you can align the jack under the coupler height that suits the tow vehicle rather than working around where it landed.
Where the FZZD HZ-07 falls short
The fixed retracted length is the deal breaker for very low-clearance storage, and there is no adjustment for it. One owner also noted extra play in the mounting bracket for a jack of this weight class, which is worth checking during the first week of use.
It is a weld-on pipe mount, so it is a permanent commitment, and at 27 lb it is a two person lift on a tall tongue.
5. SEALIGHT 8000 lb Multi-Stage Jack – widest height adjustment
SEALIGHT 8000LBS Heavy-Duty Trailer Jacks for RV, Yacht & Utility Trailers
8000 lb capacity
9.84 to 33.85 in range
Weld or bolt fix
Powder coated steel
Pros
- Very wide multi-stage height range
- Large diameter base with anti-tilt design
- Accepts welding or bolt fixing
- Works with a power tool or by hand
Cons
- Electric variant of this listing is slow under power
- Top cover screws strip easily
- A few 7500 lb electric builds failed early
The 9.84 to 33.85 inch multi-stage range is the widest we measured, and it gets there through a telescoping arrangement rather than a long drop leg. That means the jack can be very short in storage and still reach full lift, which is useful when the tongue tube is short.
It accepts either welding or bolt fixing, so you can start with bolts to test the position and weld it once you are happy. It also runs from a power tool or by hand cranking, which is a practical backup when a cordless drill battery is flat.
Manual owners of this listing report thick, well fitting builds that lift a camper tongue easily, and some describe it holding up on a construction fleet in rough conditions. The large diameter base with an anti-tilt function is the detail that stops the trailer rocking while you work.
Be aware of one thing before you buy. The 7500 lb electric variant of this listing shares the same review pool, and the criticism we found is concentrated there: slow powered travel, a top cover held by four small screws that strip easily, and a handful of early failure reports with no support response. The manual 8000 lb version is the one the positive reviews describe.
Who the SEALIGHT suits
It suits trailers with unusual geometry. A short tongue, a tongue that slopes, or a tow vehicle with an unusually high hitch are all situations where a very wide multi-stage range saves you from a jack that runs out of stroke halfway through the lift.
For anyone who prefers a drill to a crank handle, the power tool compatibility is a genuine convenience on a 8000 lb load where turning a handle is real work.
Where the SEALIGHT falls short
The shared review pool makes it harder to judge the electric variant fairly, and the strip-prone cover screws are a design detail we would rather not have on a jack that lives outdoors. Expect a one year manufacturer warranty.
At roughly 29 lb it is a two person lift, and the finish is carbon steel with a galvanized pipe and powder coating, which is good but not the heaviest gauge in this group.
6. Husky HB4500 4500 lb Electric Tongue Jack – the most proven electric pick
Husky HB4500 4500 lbs. Brute Power Jack, Hammer Gray Finish
4500 lb electric
18 in travel
6 in drop leg
3 LED work lights
Pros
- Deepest review history of any jack here
- Multi-year owners report trouble free use
- Noticeably quiet operation
- Smart Stop protects motor at full travel
Cons
- Washers and battery connectors not included
- LED work lights are weak
- Slower travel than newer electric jacks
The Husky HB4500 earns its place on evidence rather than specs. It carries roughly 1500 ratings, far more than anything else in this comparison, and multiple owners describe three plus years of trouble free use on heavy trailers. RV owners in particular name it as a reliable electric option when they replace a noisy factory jack.
Mechanically it is a 4500 lb rated tongue jack with 18 inches of travel and a 6 inch drop-down leg, which gives it more usable height than most 5000 lb units in this list. The planetary gear Smart Stop timing system cuts power before the hard stop, and that is the feature that keeps the gearbox alive over years of daily use.
At 25 amps it draws quietly enough for a campsite, and three LED work lights sit over the coupler so you can see the ball. The oval mounting holes let you rotate the unit to clear a truck tailgate, and a manual crank handle is included for when the battery is dead.
The recurring gripes are small but real: flat washers and battery terminal connectors are not in the box, the LED lights are dim, and travel is slower than newer electric jacks. With only three mounting holes, a full 90 degree rotation is not always possible on an older trailer.
Who the Husky HB4500 suits
It suits owners who hook up and unhitch daily, often at night, and who want a proven electric unit rather than a gamble. A horse trailer owner lifting around 3000 to 4000 lb of tongue weight is comfortably inside its range, and the drop leg covers uneven barn floors.
Retrofitting into an older trailer is straightforward because it drops into the same footprint as a standard electric jack. Budget for the missing washers and terminals, which is a ten minute fix at any auto parts counter.
Where the Husky HB4500 falls short
4500 lb is genuinely light for a heavy trailer. If your tongue weight approaches 3500 lb or above, an 8000 lb manual jack or a 7500 lb electric unit is a safer purchase, because cranking speed on a 4500 lb jack at near full load gets very hard very fast.
There is also only a one year Husky warranty, and the three mounting holes limit your options on a tight A-frame.
7. TYT 8000 lb Square Weld-On Jack – long drop leg and lift
TYT 8000lbs Square Direct Weld Heavy Duty Trailer Jack, 15 Inches Lift Side Wind Square Jack, with 13 Inches Adjustable Drop Leg for Camping Trailer, Boat Trailers, RV Trailers, Black
8000 lb tongue weight
7000 lb lift
15 in lift
13 in drop leg
Pros
- 13 inch drop leg plus 15 inch lift
- Overlapping tubes stiffen at full extension
- Weather resistant coating and zinc inner tube
- Square tube resists side loading
Cons
- Lift capacity is 7000 lb not 8000 lb
- Weld-on mounting only
- Shorter review history than big name picks
Read the rating carefully before you commit. The 8000 lb figure is the tongue weight rating, and the actual lift capacity is 7000 lbs, which is a distinction reviewers raise more than any other on this jack. If your tongue weight is close to 8000 lb, this is not the unit for you.
Assuming you are comfortably inside that, the travel numbers are excellent for a budget jack. A 13 inch adjustable drop leg secured by a pin and clip combines with 15 inches of lift to give you far more usable height than a fixed-stroke design, and the retracted and extended heights of 24-1/4 and 39-1/4 inches let you plan for tight hitches.
The square tube with overlapping outer and inner tubes is what gives it rigidity at full extension, and owners consistently point that out. At 2.6 inches outer tube diameter with a weather resistant outer coating and zinc inner tube, it holds up outdoors without being heavy at 23 lb.
Sidewind handle operation is standard and the pin and clip drop leg is the simple, proven design that has been on jacks for decades. That simplicity is a virtue when you are changing a tire in a field with a hand crank and no tools.
Who the TYT suits
It suits owners of a mid weight trailer who want a long, adjustable lift at an entry price. A small horse trailer, a landscape trailer, or a light equipment trailer with a tongue weight around 1500 to 3000 lb is exactly the range where this jack is comfortable.
If you tow with a lifted truck, the combination of drop leg and lift height is likely to be the reason you choose it over a fixed-stroke jack at the same capacity.
Where the TYT falls short
The gap between the 8000 lb headline and the 7000 lb real lift capacity catches people out. Do the math on your tongue weight first.
It is weld-on only, and with 115 reviews the long term track record is shorter than the picks with thousands of ratings. If you keep the trailer for a decade, that matters.
8. YOMILINK 8000 lb Bolt-On Jack – most flexible mount
YOMILINK 8000 lbs Trailer Jack, Bolt-On, 28.6″ Vertical Travel
8000 lb capacity
Bolt-on or weld-on
28.6 in travel
30 lb unit
Pros
- Bolts on or welds on for flexibility
- Very wide travel range
- Oversized reinforced base plate
- Galvanized coating holds up when wet
Cons
- 30 lb is heavy for a bolt-on install
- Only one year warranty
- Design is shared with lookalike jacks
This is the retrofit answer. The side mount can be bolted or welded, so you can test the position on the existing A-frame with bolts, drive the trailer to a shop for a final weld, or move the jack later when you reconfigure the trailer. Very few jacks in this group give you that freedom.
The 28.6 inch travel across a 4.5 to 33.4 inch range with five lock positions is the other reason to shortlist it. It is one of the widest adjustment ranges we measured, and it handles a low trailer on a high hitch ball as comfortably as the reverse.
Feedback centres on solid construction, wide adjustability, and a stable oversized reinforced base plate. The extended textured handle improves grip and cranking control, and owners report the galvanized coating holding up in wet and salty conditions.
Two cautions. At 30 lb it is a heavy bolt-on, so you will want a second person or a small lifting jack to hold the tongue while you align the bracket. And the design is shared with several visually similar jacks, which makes spec sheets easy to confuse at the parts counter, so buy on the model number rather than the shape.
Who the YOMILINK suits
It suits anyone adding a jack to an existing trailer who does not want to commit to a permanent weld position. Owners upgrading a stock A-frame jack, or builders who are still moving the coupler around during fabrication, both benefit.
The 4.5 inch low end of the range is useful for older, low-slung A-frames where a taller jack will not retract clear of the coupler.
Where the YOMILINK falls short
The one year warranty is the weakest kind of protection for a jack that will be cranked outdoors for years. The weight also works against the bolt-on benefit, because the hardest part of a bolt-on install is often simply holding the thing up.
Because the design is shared across several brands, read the spec sheet carefully and confirm the capacity and travel numbers rather than trusting the shape.
9. KYX 7500 lb Electric Tongue Jack – highest rated electric capacity
KYX Electric Trailer Jack 7500LBs,Electric Jack with Waterproof Cover
7500 lb rated
9.84 in retracted
32 in extended
12V DC motor
Pros
- Highest rated electric capacity in this group
- Three bolt swap over from a manual jack
- Built in overload breaker
- Manual crank for power loss
Cons
- Recurring reports of screw or motor failures
- Wires too short and no terminal connectors
- Slower than cranking with a drill
If you want electric power on a heavy trailer, 7500 lb is the highest rated electric capacity in this comparison, and that is what sets this one apart from the 4500 and 5000 lb jacks most owners buy out of habit. It retracts to 9.84 inches and extends to 32 inches with multi-level height adjustment.
The install story is the selling point. Swapping a manual jack for this takes three bolts, so converting an existing trailer to electric is a short job with a basic tool set. A built in overload circuit breaker that auto-resets after cooling protects the motor, and a hand crank is included for when the battery is flat.
Happy buyers highlight the easy three bolt installation, the convenience of the remote control version that lets you align the hitch from the cab, and the removable footplate that helps with levelling. The waterproof cover is included, which matters if the jack sits out in the weather.
The durability cluster is the reason this is not higher in the list despite the capacity. Several owners report the screw drive snapping or the motor failing within months, the wiring is too short to reach the battery and arrives without terminal connectors, and the travel speed is slower than simply cranking with a drill. Support response is also cited as poor, and the warranty is one year.
Who the KYX suits
It suits owners of a heavy A-frame trailer who want electric convenience but are not willing to give up capacity for it. A large enclosed cargo trailer or a heavy horse trailer with a 4000 to 5000 lb tongue weight sits comfortably inside a 7500 lb rating.
It is also the practical choice if you are converting a trailer that already has a manual jack in a spot you like, because the three bolt changeover means you keep the existing mount position.
Where the KYX falls short
Early failure reports on the screw drive and motor are the main concern, and they are consistent enough that we would budget for a possible replacement within a few seasons. A one year warranty with slow support does little to offset that.
You will need to source your own battery connectors and possibly extend the leads, and the powered travel is slow, so a drill on the existing jack screw is still a reasonable backup.
10. POLESTAR 5000 lb Electric Tongue Jack – smoothest ball screw drive
POLESTAR Electric Trailer Jack, 5000lbs Electric Power A-Frame Tongue Jack
5000 lb dynamic
7500 lb static
9 to 27 in lift
4.5 in drop leg
Pros
- Ball screw drive is smoother and quieter
- Retrofits into the standard electric jack footprint
- Reported use on a 30 ft trailer and 3 ton dump
- Emergency crank and waterproof cover included
Cons
- Non standard inline fuse is hard to source
- Support is confused with the automaker
- Tailgate interference in the standard orientation
Most electric tongue jacks use an acme thread, which is fast and noisy. This one uses a ball screw with a brake motor, and that single change is why owners so consistently describe it as smoother and quieter than the 3500 and 5000 lb factory jacks they replace. The brake motor is what stops the drift you get when a loaded trailer settles overnight.
Capacity is listed as 5000 lb dynamic and 7500 lb static lifting, which is worth understanding rather than just comparing the headline number. Dynamic is the load while the screw is moving; static is the load once it is parked and holding.
Height is generous for a 5000 lb unit. It runs 9 inches retracted to 27 inches of lift, plus a 4.5 inch drop leg taking it to 31.5 inches, and a built in circuit breaker trips and resets on over-amperage. LEDs illuminate the ball and coupler, and a waterproof rain cover is in the box.
Owners report using it on a 30 ft trailer and on a 3 ton dump trailer, and the easy retrofit into a standard electric jack footprint is what makes it a favourite for replacements. The complaints are specific: a non standard inline fuse that is hard to source locally, and customer service contacts that get confused with the automaker of the same name.
Who the POLESTAR suits
It suits anyone who finds electric jacks annoying. If you have ever sat in the rain waiting for a factory jack to crawl, a ball screw drive with a brake motor is a genuine quality of life change rather than a spec sheet upgrade.
It also suits owners replacing a factory jack on a mid weight A-frame, since the footprint matches and the manual crank means you are never fully dependent on the electrical connection.
Where the POLESTAR falls short
The default mounting orientation can interfere with a lowered truck tailgate, so check clearance before you commit, and be ready to source an equivalent inline fuse locally.
The support situation and the one year warranty are both weaker than the machine deserves. Buy a spare fuse and a spare crank handle while you are at it.
11. VEVOR EJ5021B 5000 lb Electric Jack – longest warranty in the group
VEVOR Electric Trailer Jack, 5000 lbs, Heavy Duty RV Electric Power Tongue Jack with 2 Way Connector, Manual Crank Handle & Weatherproof Jack Cover, 10″-28.3″ Lift, for RVs, Trailers & Campers, Black
5000 lb electric
10 to 33.8 in lift
LED light
2 year warranty
Pros
- Two year manufacturer warranty
- Quick swap from a manual jack
- Flange holes allow sideways mounting
- Manual crank and cover included
Cons
- Slow powered travel
- A few early jack screw failures
- Cover or inline fuse can arrive missing
The two year manufacturer warranty is the longest in this group, and on an electric jack where the motor and gearbox are the failure points, that is not a trivial difference. For owners who keep a trailer for years, the warranty length is often a better durability signal than the capacity number on the box.
It lifts 5000 lb across a 10 to 33.8 inch range, which is a wide stroke for the capacity class, and the carbon steel body carries a galvanized rust resistant coating. A built in LED work light handles night hookup, and a manual crank handle is included so a flat battery is an inconvenience rather than a crisis.
Two details make it easier to live with than most. The multiple flange hole patterns allow 90 degree rotated mounting so a pickup tailgate clears, which is the single most common installation problem we heard about. And owners report install times under 30 minutes swapping a manual jack for this one.
Against that, powered travel is slow, and while most owners find the lift adequate, a small number report the jack screw breaking within days of first use. The control cover and inline fuse can arrive missing from the box, so check the contents before you start. In the standard orientation the jack head can also block a lowered tailgate.
Who the VEVOR EJ5021B suits
It suits travel trailer and camper owners upgrading from a hand crank who want the changeover to take half an hour rather than a weekend. The rotated mounting option makes it a good fit behind a pickup where tailgate clearance is a daily annoyance.
It also suits owners who intend to keep the trailer a long time and want more than a single year of coverage on the electrical components.
Where the VEVOR EJ5021B falls short
5000 lb is below what a genuinely heavy trailer tongue demands, so treat this as a mid weight solution rather than a heavy duty one. A 7500 lb electric or an 8000 lb manual is the safer match for tongue weights approaching 3500 lb and up.
Slow travel, occasional missing accessories, and a small cluster of early screw failures are the recurring notes in the reviews. Order the cover and a spare inline fuse with the jack.
12. RVMATE 5000-5500 lb Electric A-Frame Jack – best tailgate clearance
RVMATE Electric A-Frame Trailer Jack up to 5000-5500lbs,18″ Lift
5000 to 5500 lb
18 in travel
5-5/8 in drop leg
Bright LED lights
Pros
- Two mounting orientations for tailgate clearance
- Removable footplate helps with levelling
- Drop leg handles uneven campsites
- Manual crank and inline fuse included
Cons
- Slow travel is the most common complaint
- Battery lead is shorter than many need
- Some builds fail within a year or two
It travels 18 inches from a 9 inch retracted height to 32-1/2 inches extended, with 5-5/8 inches of drop leg travel on a standard 2-1/4 inch A-frame tube. That drop leg is the feature that earns it a place for anyone camping on a site that is not perfectly level, because it lets you get the frame close to the ground before the jack runs out.
The spur gear 12V motor drives it, and the removable footplate helps you level the trailer against a weight distribution bar. Owners consistently praise the easy installation in the standard A-frame bolt pattern and the ability to mount sideways for full tailgate clearance.
Bright LED lights sit over the coupler, which several owners single out as noticeably brighter than the lights on competing jacks. The zinc inner tube and black powder coat outer tube are a sensible pairing for outdoor exposure, and the inline fuse plus manual crank handle are both included.
The complaints are consistent across reviews: travel speed is the most common one, even among owners who like everything else. The battery lead is shorter than many users need to reach the terminals, and a small cluster report the unit or its LED light failing within a year or two. One detailed negative review also describes customer service as hard to reach.
Who the RVMATE suits
It suits travel trailer and camper owners who camp on uneven sites, because the drop leg and wide adjustability make hookup far easier than a fixed stroke jack. It also suits anyone whose tow vehicle is a pickup with a tailgate they need to close.
If you are replacing a factory jack in a standard A-frame bolt pattern, this is one of the least disruptive swaps in the group, and the bright lights are genuinely useful on a dark campsite.
Where the RVMATE falls short
The slow travel speed is the top complaint and it is the feature you will notice most often in daily use. Plan for a manual crank on the existing jack screw as a fast option when you are in a hurry.
Like most electric jacks here, the warranty is one year, and the early failure reports on the unit or its light mean you should check the wiring connections carefully in the first month.
Electric vs manual vs hydraulic: which do you need?
Manual wins on cost per unit of capacity, and it cannot fail because a battery died. A square tube manual jack at 8000 lb will still lift your trailer with a dead starter, a dead trailer battery, and a dead alternator.
Electric wins on convenience. A switch at the coupler, a light over the ball, and no cranking effort at 4000 lb on uneven ground add up across hundreds of hookups. The cost is a motor and gearbox that can fail, and slower travel than a drill on a manual screw.
Hydraulic is a different category, and it is the answer most heavy trailer owners are missing. Above roughly 12,000 lb of tongue weight, a single tongue jack is the wrong tool. Tandem landing gear, often sold as a pair rated 25,000 lb lift and 50,000 lb static, is what gooseneck flatbeds, dump trailers, and fifth wheel pin boxes actually use. Forum discussion about heavy agricultural trailers consistently points to established heavy-equipment brands for this class of load, and none of the jacks in this roundup is a substitute for it.
Bolt-on or weld-on: measure before you order
Nothing generates more returns than a bolt-on jack that does not match the tongue. Measure four things before you order: the outside width of the tongue tube, the outside height, the bolt spacing between existing holes, and the distance from the coupler to the front of the frame where the jack foot will land.
For bolt-on mounts, compare your measurements to the manufacturer bracket dimensions rather than guessing. A jack that mounts with a single bolt through each side of the tube is not suitable on a wide fabricated beam, because the clamp force spreads across too much material.
Weld-on is stronger and more permanent, which is why fabricators use it on anything they build. If you weld, add a reinforcing plate to thin wall tube before the jack goes on, and keep the jack foot inside the frame rails so the load path stays vertical.
Foot plate, wheel or caster: what the bottom end changes
A foot plate spreads the load over soft ground and gives you a stable, level base. It is the default choice for grass, dirt, gravel, and campsite hookups, and every jack in this roundup uses one.
A small wheel is convenient when the trailer has to be moved around a shop floor, but it sinks into gravel and soft grass and gives you very little lateral stability once you start cranking. Owners who put a wheel jack on gravel end up chocking the trailer every time.
A caster is a third option used on some drop leg systems, rolling on a hard surface and locking into a foot on soft ground. If your trailer lives on a concrete pad, a wheel or caster saves time. If it lives anywhere else, take the plate.
Corrosion, coatings and a five year maintenance schedule
Coating choice follows environment. Galvanized steel and zinc inner tubes are the right answer for freshwater and general outdoor storage. Powder coat over carbon steel holds up well in rain and sun but will blister if a rock strike opens a bare spot, so touch up chips early with a cold galvanizing spray.
For saltwater, rinse the jack down with fresh water after every launch and pay attention to the inner tube, which is where the tube meets the wiper seal. Saltwater owners in coastal areas report the biggest difference between a jack that lasts seasons and one that rusts through in a year.
Here is the maintenance routine we would follow. Every season, grease the screw through the fitting on top of the jack with a quality lithium or silicone grease, and work the crank through full travel to distribute it. Every year, inspect the inner tube for scoring and check the foot plate and drop leg pin for wear. Every two years, check the bolt torque on a bolt-on mount. Electric jacks should also have their wiring connections cleaned and the inline fuse checked once a year.
Working safely around a jacked-up trailer
Always drop a wood block or rated stabilizer under the jack foot, and never rely on the jack alone to hold the trailer while you work. The jack is a lifting device, not a permanent support, and the frame can settle as the suspension relaxes.
Chock the wheels on both sides before you start, and if the ground is soft, set the jack foot on a timber block that spreads the load. Before going under the trailer, put proper jack stands under the frame near the work area, because a trailer supported on a tongue jack can shift if something lands on the wheels.
On a gooseneck or dump trailer, engage the stabilizers and the remote brake rather than depending on the hitch. The same discipline applies to a jack swap: never work underneath a trailer supported only by a fresh jack install.
Frequently Asked Questions
What is the best brand of trailer jack?
For heavy trailers, the brands that consistently earn the most owner trust are the ones that publish both a lift capacity and a static support rating, and back the mechanism with a real warranty. Curt stands out here with a limited lifetime warranty on the 28512 side wind jack. On the farm and agricultural side, forum discussion consistently names Bulldog and Holland for genuinely heavy loads, and both of those brands build in the United States. For electric jacks, Husky has the deepest long term owner record we found.
How heavy of a trailer jack do I need?
Find the GVWR on the trailer frame sticker and take 10 to 15 percent of that number as your working tongue weight. Then buy a jack rated 20 to 25 percent above that figure. A 10,000 lb GVWR trailer puts roughly 1,000 to 1,500 lb on the coupler, so a jack rated to support 12,000 lb of tongue weight gives real headroom. Remember that lift capacity and static support capacity are different numbers.
Are electric trailer jacks any good?
Yes, provided the tongue weight is inside their comfort zone and you accept the trade. Electric jacks use a 12V motor with a gear drive, and the best of them, like the Husky HB4500 and the POLESTAR 5000 lb ball screw unit, are noticeably quieter and smoother than the factory jacks they replace. The main complaints are slow powered travel and early motor or screw failures on lower priced units. A manual crank backup is worth having either way.
Why put wood under a trailer jack?
A wood block spreads the load and stops the jack foot sinking into soft ground, which is what makes a jack tip or the tongue drop unexpectedly. A jack is a lifting device rather than a permanent support, so the frame can settle as the suspension relaxes. Put the block under the foot, chock the wheels on both sides, and use proper jack stands under the frame before crawling underneath.
What is the 60/40 rule for trailers?
The 60/40 rule describes how a properly loaded trailer distributes its weight. About 60 percent of the loaded weight should sit behind the axle and about 40 percent should sit on the tongue. The tongue weight is what your jack actually lifts, so loading too much forward overloads the jack, the coupler, and the tow vehicle hitch. Checking your load against that split before a trip is the cheapest safety check you can do.
Conclusion
For most heavy trailer owners, the VEVOR TJD-7000S is the jack to beat: 8000 lb of lift capacity, a square carbon steel body that resists side loading, and a multi-level drop leg that covers a wide range of heights. It is a strong default for anyone building or rebuilding an enclosed, equipment, or flatbed trailer.
If you need more capacity than that, or you want a warranty that lasts a decade, move up to the Curt 28512 and its 12,000 lb static tongue weight rating. If you would rather not crank, the Husky HB4500 is the most proven electric pick, and the KYX 7500 lb unit is the one to buy when your tongue weight is genuinely heavy and you want electric convenience with headroom.
And if your trailer is a gooseneck, dump, or fifth wheel, skip the single tongue jack entirely and look at tandem landing gear. That is the tool the heavy end of this market actually runs on, and it is the one recommendation we would make before anything else in this roundup.