Trailer Stabilizer Jacks Ask An Expert Request a Quote Request Service Or give us a call: 1-888-606-9415 Trailer stabilizer jacks are used during the loading and unloading process when the trailer is not supported by a tractor. Their primary function is to reduce accidents that occur when landing gear collapses as a result of instability and freight overload. They protect the workers who load and unload freight using a forklift by providing a redundant safety solution to trailers whose landing gear often goes uninspected for years. Trailer stabilizer jacks come in a range of sizes and strengths, offering you a large selection of solutions.