A position limiter (50; 150; 250; 450; 550; 850; 1050) for a direct drive conveyor comprising: an endless belt ; at least one drive sprocket for engaging and driving the endless belt , the sprocket having drivers spaced at a selected sprocket pitch; a first shaft (40; 140) below the drive sprocket ; the position limiter being in use mounted to the shaft using a snap clamp such that a limiting surface of the position limiter faces the endless belt to ensure engagement between the drive sprocket and the endless belt without increasing tension throughout the belt; wherein the position limiter (50; 150; 1050) comprises: a body ; a limiting surface (54; 1054) extending at a first end of the body; and a snap clamp (60; 160; 1060) at a second end of the body for mounting the body to the shaft ; wherein the snap clamp (60; 160; 1060) comprises a substantially semi-circular gripping element forming a first curved leg that terminates in a flat end surface and a second curved leg terminating in a barbed tip the snap clamp being defined by a radially outer surface , a radially inner surface , side surfaces , the barbed tip having an angled tip outer surface and an inner tip surface , which intersect to form the barb, wherein the inner tip surface extends radially inwards from the radially inner surface ; wherein the shaft comprises a channel for engaging with the barbed tip ; and wherein the position limiter is positioned relative to the sprocket so as to create a channel through which the belt passes. an endless belt ; at least one drive sprocket for engaging and driving the endless belt , the sprocket having drivers spaced at a selected sprocket pitch; a first shaft (40; 140) below the drive sprocket ; the position limiter being in use mounted to the shaft using a snap clamp such that a limiting surface of the position limiter faces the endless belt to ensure engagement between the drive sprocket and the endless belt without increasing tension throughout the belt; wherein the position limiter (50; 150; 1050) comprises: a body ; a limiting surface (54; 1054) extending at a first end of the body; and a snap clamp (60; 160; 1060) at a second end of the body for mounting the body to the shaft ; wherein the snap clamp (60; 160; 1060) comprises a substantially semi-circular gripping element forming a first curved leg that terminates in a flat end surface and a second curved leg terminating in a barbed tip the snap clamp being defined by a radially outer surface , a radially inner surface , side surfaces , the barbed tip having an angled tip outer surface and an inner tip surface , which intersect to form the barb, wherein the inner tip surface extends radially inwards from the radially inner surface ; wherein the shaft comprises a channel for engaging with the barbed tip ; and wherein the position limiter is positioned relative to the sprocket so as to create a channel through which the belt passes. a body ; a limiting surface (54; 1054) extending at a first end of the body; and a snap clamp (60; 160; 1060) at a second end of the body for mounting the body to the shaft ; wherein the snap clamp (60; 160; 1060) comprises a substantially semi-circular gripping element forming a first curved leg that terminates in a flat end surface and a second curved leg terminating in a barbed tip the snap clamp being defined by a radially outer surface , a radially inner surface , side surfaces , the barbed tip having an angled tip outer surface and an inner tip surface , which intersect to form the barb, wherein the inner tip surface extends radially inwards from the radially inner surface ; wherein the shaft comprises a channel for engaging with the barbed tip ; and wherein the position limiter is positioned relative to the sprocket so as to create a channel through which the belt passes. <EOS>