Always take note of the weight capacity rating of your jack and try not to exceed it. Rather, try to underutilize the weight.
However, there are many models without a load rating. Some of these devices without a load rating may withstand a slight overload while most of them will get damaged entirely with the slightest of overload.
Go for a jack with a rating capacity, and keep your operations slightly below the weight limit.
Amazon and the Amazon logo are trademarks of Amazon.com, Inc, or its affiliates.