In fact, Door closer don’t have load bearing, it only has a descriction of the close door potency dimension, but because the close door potency dimension’s descriction is too abstracted and professional, so comsumers like to use door’s weight to measure Door closer’s potency dimension. After a long time, Door closer have a load bearing as the floor spring.
  But what is the descriction of the door closer’s potency dimension? And what is the relation of door’s weight. 3H - a window handles upvc supplier will tell you.
  Usually, Door closer’s potency dimension uses EN to distinguish 2, 3, 4 and 5 different grade potency. In the product descriction, there is a identification like the pocture.

 In thereinto, 2,3,4 mean that DC68V can satisfy these three close door potency. But different grade and door closer’s relation can be differebtiated as 2 means the load bearing is 45 kg. 3 means the load bearing is 60 kg. 4 means the load bearing is 80 kg. 5 means the load bearing is 100 kg. In usually, 5 grade potency can satisy many people’s need, so many door closer only can get 5 grade potency. If you want higher weight, you can choose the floor spring to solve the problem. Because over 5 grade potency’s door closer is more expensive than the same weight floor spring.