Scribing head and scribing system equipped with the same especially for breaking the glass or ceramic product by using a scribing wheel having good rotation property

The object of the present invention is to provide a scribing head, capable of not only forming a continuous scribe line, but also improving the rotation characteristics of the scribing wheel and extending the life of the blade, and a scribing device equipped therewith. The solution for the present invention is a scribing head 1, including: a scribing wheel 20 having a blade 22, and a holder 10 for holding the scribing wheel 20. The holder 10 has a cylindrical holder body 11 and a pair of leg portions 12,13 extending from the holder body 11 and facing each other. A bearing 30 is provided in the leg portion 12 and the leg portion 13, respectively. The bearing 30 is respectively attached to the leg portions 12 and 13 in a manner that the outer wheel 31 is fixed to allow the inner wheel rotating. The scribing wheel 20 is disposed between the leg portion12 and the leg portion 13 so as to rotate with the rotation of the inner wheel 32 of the bearing 30.