A tire production device for pressure bonding products that are presented in a product profile on a forming drum surface, comprising: a multidisc roller system having a frame relative to which a plurality of disc assemblies (104, 104') is disposed along a common axis, wherein each disc assembly comprises: an actuatable arm that is linearly displaceable relative to the frame, with the arm having a body of predetermined length coextensive with an actuating extent disposed proximate an actuator and an opposed free extent, with the body having a top edge and a bottom edge, and with a guide member depending from the free extent and having a support platform that, together with a depending platform, delineates a guide groove; a pair of removably attached demi-discs, with each demi-disc being a generally annular element having a predetermined diameter and with each demi-disc having a substantially planar outer surface and an opposed inner surface with a grooved space defined between the opposed inner surfaces that rotatably engages the guide member, wherein a flange depends inwardly along a periphery of each demi-disc and an inner flange surface thereof engages support platform; and a bearing disposed proximate a bearing surface of the guide member that accommodates rotation of the demi-discs (110, 110') in the guide groove; and an actuator associated with each disc assembly (104, 104') for bringing the disc assemblies into and out of contact with the product profile; wherein the disc assemblies (104, 104') are aligned in a ready position along the common axis and all of the demi-discs have constant pitch prior to engagement with the product profile such that outer surfaces of adjacent demi-discs are in slidable alignment relative to each other and relative to the frame. a multidisc roller system having a frame relative to which a plurality of disc assemblies (104, 104') is disposed along a common axis, wherein each disc assembly comprises: an actuatable arm that is linearly displaceable relative to the frame, with the arm having a body of predetermined length coextensive with an actuating extent disposed proximate an actuator and an opposed free extent, with the body having a top edge and a bottom edge, and with a guide member depending from the free extent and having a support platform that, together with a depending platform, delineates a guide groove; a pair of removably attached demi-discs, with each demi-disc being a generally annular element having a predetermined diameter and with each demi-disc having a substantially planar outer surface and an opposed inner surface with a grooved space defined between the opposed inner surfaces that rotatably engages the guide member, wherein a flange depends inwardly along a periphery of each demi-disc and an inner flange surface thereof engages support platform; and a bearing disposed proximate a bearing surface of the guide member that accommodates rotation of the demi-discs (110, 110') in the guide groove; an actuatable arm that is linearly displaceable relative to the frame, with the arm having a body of predetermined length coextensive with an actuating extent disposed proximate an actuator and an opposed free extent, with the body having a top edge and a bottom edge, and with a guide member depending from the free extent and having a support platform that, together with a depending platform, delineates a guide groove; a pair of removably attached demi-discs, with each demi-disc being a generally annular element having a predetermined diameter and with each demi-disc having a substantially planar outer surface and an opposed inner surface with a grooved space defined between the opposed inner surfaces that rotatably engages the guide member, wherein a flange depends inwardly along a periphery of each demi-disc and an inner flange surface thereof engages support platform; and a bearing disposed proximate a bearing surface of the guide member that accommodates rotation of the demi-discs (110, 110') in the guide groove; and an actuator associated with each disc assembly (104, 104') for bringing the disc assemblies into and out of contact with the product profile; wherein the disc assemblies (104, 104') are aligned in a ready position along the common axis and all of the demi-discs have constant pitch prior to engagement with the product profile such that outer surfaces of adjacent demi-discs are in slidable alignment relative to each other and relative to the frame.