Grasping grasping wood machine wood machine, as the name suggests is to grasp the timber of the machine, usually made evolved from a hydraulic excavator. The biggest difference between wood and Ordinary excavator grab that different front work machine, that is work for different purposes: general size excavator arm generally shorter, the front is the bucket, its main role is to carry out excavation, loading operations; grab wood machine arm size commonly known as "catch feed arm", generally longer, shape structure is different from ordinary excavator, front end grasping wood, its main role is for loading and unloading timber, wood, reeds, straw and various strips of material and handling operations.