The invention relates to an anti roll caster, which comprises a crankcase 10 fixed according to the shaft 11, a wheel 20 with a radius RR mounted on the shaft 22 (shaft 23), a contact point 24 with the ground, a shell 30 in the cylindrical sector of the shaft 31, and two edges of walls 32, 33 has an opening 34 defined on the OAC angle, a workpiece 40 defined on the PAC angle in a cylindrical sector region with radius RP, an axial section complementary to the housing 30, and an extension 50 realized on the slice 41 of the workpiece 40, Install piece 40 on crankcase 10 in order to move between two positions P1 and P2 in housing 30.
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