Industrial robot

The present invention relates to an industrial robot, and more particularly, to an industrial robot which is employed in workplaces involved in processing, manufacture, transfer, packaging, dispatch, or the like, of products relating to foodstuffs, medical care or hygiene. An industrial robot comprises a column 1 fixed to an installation base BS, a first axis J, which is a linear movement axis, a second axis Jand a third axis J, which are rotational axes, and a fourth axis Jin the form of a driving axis (rotational axis) of a working tool. A food grade lubricating oil is used for the linear guide (), ball screw (), bearing (), speed reducers () and gears () of these axes. Oil seals () for sealing the food grade lubricating oil are made from a material which is harmless to human bodies, for example, a fluorine resin material, in consideration of their wear.