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Heavy-Duty Floor Jacks for Semi Trucks
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What Size Jack Lifts a Semi? 12–20 Tons.
To lift a semi truck safely you need a heavy-duty jack rated between 12 and 20 tons. The front steer axle of a tractor carries 10,000 to 14,000 pounds, so a 12-ton jack is the working minimum there, while the rear drive axles push most shops to a 20-ton air hydraulic or bottle jack. A standard 2- or 3-ton automotive floor jack is dangerously overloaded by any part of a semi.
David's Heavy Duty Tool Sales stocks service jacks, air hydraulic jacks, bottle jacks and the jack stands that belong under every raised truck. Veteran-owned, serving fleets across North America.
The Four Jacks of a Truck Shop
Each type earns its spot for a different job. Most fleet operations end up running all four.
Service / Floor Jacks
The shop workhorse: wheeled, stable and precise. Runs from 1.5-ton units for cab work to 11-ton-and-up floor jacks for tractors and loaded trailers.
Air Hydraulic Jacks
Shop air does the pumping. Telescoping rams raise a loaded axle in seconds, which makes 20-ton air hydraulic jacks the standard for busy commercial bays.
Heavy-Duty Bottle Jacks
Maximum force in minimum space. A 12 to 20-ton bottle jack rides in the cab or service truck and handles roadside lifts where a floor jack can't go.
Jack Stands (Non-Negotiable)
A jack lifts; it never supports. Rated commercial jack stands go under the truck before anyone does. We stock stands and extensions up to heavy commercial ratings.
How to Size a Jack for a Semi Truck
You never lift the whole truck at once; you lift one axle or corner at a time. Size the jack to the heaviest point it will ever touch, with margin.
Front Steer Axle: 12-Ton Minimum
The steering axle of a typical tractor carries 10,000 to 14,000 pounds. A 12-ton jack keeps a safe working margin above that weight; anything smaller is operating at its limit.
Rear Drive Axles: 20-Ton Standard
The drives carry far more load, especially under a loaded trailer. A 20-ton air hydraulic jack or bottle jack is the industry standard for rear axle and general heavy-truck service.
The Safety Rules That Never Change
Chock the wheels staying on the ground. Lift on a hard, level surface. Place the jack under the solid axle, spring hanger pad or reinforced frame point, never on thin stamped steel. And transfer the weight to rated jack stands before anyone goes under the truck. The number one jack mistake in every survey is working under a load held only by hydraulics.
| Jack Type | Typical Capacity | Best For |
|---|---|---|
| Service / floor jack | 1.5–20 tons | Daily shop lifting, precise control |
| Air hydraulic jack | 10–35 tons | Fast axle lifts in commercial bays |
| Heavy-duty bottle jack | 12–30 tons | Road service, tight clearances |
| Jack stands | 3–35 tons | Supporting every raised truck |
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Not Sure What Tonnage You Need?
Tell us what you lift, and we'll spec the jack and the stands to match. Call 616.591.0095.
Shop NowFrequently Asked Questions
What size jack do I need for a semi truck?
A heavy-duty commercial jack rated between 12 and 20 tons. For front steer axles, 12 tons is the working minimum; rear drive axles and general heavy-truck service call for a 20-ton air hydraulic or bottle jack, always paired with rated jack stands.
Will a 3-ton jack lift a semi truck?
No. A 3-ton jack is dangerously inadequate for a semi. The steer axle alone can exceed its 6,000-pound limit, and an automotive jack's small footprint can tip or kick out under commercial weight. Step up to a 12 to 20-ton commercial jack.
Can you use a bottle jack on a semi truck?
Yes, if it's rated for the load: 20 tons or higher is the safe standard. Place it under the solid axle on a hard, level surface, use wheel chocks, and support the truck with commercial jack stands before working underneath.
What are the downsides of a bottle jack?
A narrow base that can tip or sink on soft or uneven ground, a tall collapsed height that may not fit under low clearance points, and slower manual pumping under heavy loads. Air hydraulic models solve the pumping; nothing solves a bad surface.
What is the number one mistake when using jacks?
Working under a load supported only by the jack. Hydraulics can fail without warning. Always transfer the weight to rated jack stands, on a hard level surface, with the remaining wheels chocked, before anyone goes under the truck.