Heavy-Duty Ratchet Beam Trailer Stabilising Jack — a ratchet-beam stabilising jack for trailers, caravans and flatbeds. It holds a loaded trailer level and steady while it is parked or being loaded, rather than leaving it supported on the hitch or propped on blocks of timber. The ratchet-beam adjustment lets one person raise the jack with a handle instead of winding a screw jack under load.
Why it is worth fitting
A trailer that is not stabilised is uncomfortable and unsafe to work around. It rocks when you walk inside a caravan, it dips at one corner when you load a flatbed unevenly, and if it is left resting on the hitch, that is a great deal of load on one component for weeks at a time. Blocks of timber work until the ground is soft or the surface is uneven, at which point they become a hazard. A ratchet-beam jack addresses all of that with one mechanism. The ratchet is what makes it practical for a single person: a screw jack has to be wound under load, which is slow and hard work, whereas a ratchet beam is raised with a lever through a series of steps, so the effort is manageable. Steel construction and a wide base plate matter here, because a stabilising jack carries a permanent load rather than a momentary one.
Key features
- Ratchet beam adjustment — raise the jack with a handle, single-handed and under load
- Steel construction with a stated static capacity of 100,000 lb
- Adjusts from 39.5 to 51 inches, covering a range of trailer deck heights
- Painted yellow for visibility in a yard, on a site or on a hard shoulder
- Wide base plate spreads the load, so it does not sink into soft ground
- Suitable for trailers, caravans and flatbeds rather than vehicles being lifted
- ISO 9001 certified production, from a supplier with 20 years of export experience
- Ratchet mechanism steps and locks, rather than relying on friction alone
Specifications
| Brand | TL |
|---|---|
| Model number | TSJ003B |
| Product type | Trailer stabilising jack, ratchet beam |
| Material | Steel |
| Finish | Yellow painted |
| Minimum height | 39.5 in |
| Maximum height | 51 in |
| Adjustment method | Ratchet beam |
| Certificate | ISO 9001 |
| Country of origin | Shandong, China |
Will it fit?
Suits trailers, caravans and flatbeds with a deck height inside the 39.5 to 51 inch adjustment range. Measure the height at the point where the foot of the jack will actually sit, not at the highest part of the trailer, because ground slope and the position of the chassis rail change the figure. Think about the ground too: a jack that is adequate on a hardstanding will behave differently on grass or gravel, where a wider or larger base plate may be needed to spread the load.
Fitting and first use
Set the trailer on level ground and chock the wheels before lifting anything — a stabilising jack is not a substitute for wheel chocks. Position the jack under a structural part of the chassis or a designated jacking point, never under a floor panel or a length of unsupported frame. Take up the ratchet adjustment until the foot contacts the ground, then raise in steps and check the trailer is level with a spirit level rather than by eye. Once at height, confirm the ratchet is fully engaged and the load is sitting on the mechanism rather than on the lever. If you are stabilising a corner, do not use the jack to lift a wheel clear of the ground.
Care and maintenance
Clean and lightly oil the ratchet mechanism periodically, because grit in the ratchet is the usual cause of one that becomes hard to operate or slips. Check the welds between the beam and the base plate each season, since that joint takes the entire load. Store the jack upright on a dry surface rather than lying on damp ground, and touch up any chipped paint on the beam, because a stabilising jack lives outdoors and rust starts at the chips. Check the base plate has not distorted after use on soft ground.
Frequently asked questions
Is this for lifting a vehicle?
No. It is a stabilising jack for holding a trailer, caravan or flatbed level and steady. It should not be used to lift a wheel clear of the ground or as a substitute for a vehicle jack.
What height do I need?
Measure the height from the ground to the bottom of the chassis rail at the point where the jack will sit, on the ground the trailer will actually be parked on. The adjustment range is 39.5 to 51 inches.
How many jacks do I need?
Four, for a trailer, gives stability at each corner. Two can hold one end steady, but the trailer will still move at the unsupported end.
Do I still need wheel chocks?
Yes. Chocks stop the trailer rolling; the jack holds it level. They do different jobs and both are needed.
SKU: AP-045 | Category: Car Jack Stand
Delivery is a flat €12 per order. See our Returns & Exchanges page for delivery times, your 14-day right of withdrawal and the 2-year legal guarantee of conformity.





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