Not much because their feet are not designed for bearing such large amounts of weight. Their arms are quite powerful, though. An experiment in 1926 found that one captive male was able to single-arm pull nearly 900 pounds.
50times is weight
The leafcutter ant is known for its incredible strength, being able to lift weights that are around 50 times its own body weight. However, the insect that can lift the most relative to its size is the dung beetle, particularly the horned dung beetle, which can lift objects up to 1,000 times its weight. While no animal can lift exactly 300 times its weight, many insects and small animals demonstrate remarkable strength relative to their body size.
Many insects can lift objects of huge weight, proportionate to their own size. An ant, for example, can lift 5 times its own body weight.
Ants are capable of lifting objects that can be many times their own body weight. The specific amount an ant can lift varies depending on the species, but in general, ants can carry objects weighing 10-50 times their body weight.
folic acid
Sonic can lift and push objects many times his own weight due to his super speed and strength, so there isn't a specific weight limit associated with his abilities.
Muscular Endurance : NovaNet
Muscular Endurance : NovaNet
There are many small creatures that are able to lift extraordinary amounts. For instance, some types of ants able to life 800 times their body weight. Similarly, a dung beetle is known to lift 1000 times it's weight.
Ants can lift so much weight because they have a strong exoskeleton and muscles that are proportionally stronger than those of larger animals, allowing them to carry objects many times their own body weight.
Probably 8 to 9 ton, the tusk is very strong too.
Muscular Endurance : NovaNet