1, light weight: that is, under constant power conditions, power tools should be as light as possible, because most of them are operated by workers using power tools, weight affects the size of the labor intensity, improve productivity, there is a close relationship, for example, coal power drill when the weight of 2.6 kg, can increase 18%-23% labor production
2, safety: power tools must be well insulated, in order to ensure safe use, for general power tools must have good and reliable grounding protection, or use double insulation, for wet places and some special departments to use power tools, should use safe low pressure
3, reliable: power tools in use, the work must be reliable, the mechanical structure should be strong, durable, and easy to load and unload, for dangerous working mechanisms (such as iron knives, saw knives, grinding stones, etc.) should be installed protective cover, power tools must also have a certain service life
4, operation balance: rotating parts of the power tool (such as armature, rotor) should act balance test, carry out the correct imbalance, so that it runs balanced, this is because the tool vibration will not only shorten the service life, reduce the quality of treatment, but also make the operator fatigue and cause occupational diseases.
5, easy to use, beautiful appearance: the shape and size of the power tool must be beautiful and suitable for use, such as the handle of the power tool must be hand-held or hand-held switch easy to operate.
