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 (66, 1066) 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 (66, 1066) 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 (66, 1066) 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.