An adjustable cartridge for a boring bar, including: a support structure including an surface for abutment with a peripheral area of a boring bar ; a load-bearing structure for a cutting insert assembled to be movable translationaly in a first direction on the support structure , wherein the cartridge includes: a mechanism to adjust the position of the load-bearing structure in relation to the support structure , the adjustment mechanism including at least a first elastic means arranged to exert force against a first surface of the load-bearing structure , and an adjustment part disposed between the support structure and a second surface of the load-bearing structure , the adjustment part being arranged to contact the support structure and the second surface of the load-bearing structure , and to be movable translationally in a second direction relative to the support structure and the load-bearing structure , the adjustment part having a surface forming an acute angle with the second direction and being disposed in contact with the second surface of the load-bearing structure , the first surface and the second surface of the load-bearing structure facing in generally opposite directions. a support structure including an surface for abutment with a peripheral area of a boring bar ; a load-bearing structure for a cutting insert assembled to be movable translationaly in a first direction on the support structure , wherein the cartridge includes: a mechanism to adjust the position of the load-bearing structure in relation to the support structure , the adjustment mechanism including at least a first elastic means arranged to exert force against a first surface of the load-bearing structure , and an adjustment part disposed between the support structure and a second surface of the load-bearing structure , the adjustment part being arranged to contact the support structure and the second surface of the load-bearing structure , and to be movable translationally in a second direction relative to the support structure and the load-bearing structure , the adjustment part having a surface forming an acute angle with the second direction and being disposed in contact with the second surface of the load-bearing structure , the first surface and the second surface of the load-bearing structure facing in generally opposite directions. a mechanism to adjust the position of the load-bearing structure in relation to the support structure , the adjustment mechanism including at least a first elastic means arranged to exert force against a first surface of the load-bearing structure , and an adjustment part disposed between the support structure and a second surface of the load-bearing structure , the adjustment part being arranged to contact the support structure and the second surface of the load-bearing structure , and to be movable translationally in a second direction relative to the support structure and the load-bearing structure , the adjustment part having a surface forming an acute angle with the second direction and being disposed in contact with the second surface of the load-bearing structure , the first surface and the second surface of the load-bearing structure facing in generally opposite directions. <EOS>