HDR100 Collar (Bottom) The HDR100 Collar is a replacement lower collar component for HDR100 ram assemblies used within automatic cluster remover systems. This part helps support the lower section of the assembly, keeping connected components correctly positioned and contributing to smooth, reliable movement during milking. Because ACR ram assemblies work through repeated movement, pressure and regular wash-down routines, collar components can become worn, cracked or damaged over time. A loose or damaged lower collar may affect alignment within the ram body and reduce how consistently the unit responds. Replacing it with the HDR100 Collar helps restore correct support around the lower section, improving stability and helping the assembly work as intended. This part is useful for dairy engineers and farm teams carrying out HDR100 repairs, servicing or preventative maintenance. It is especially helpful when the main assembly is still serviceable, but the lower collar needs replacing to maintain a secure fit. Keeping small ACR spares in stock can make repairs quicker and reduce downtime between milkings. The HDR100 Collar is a practical replacement part for maintaining automatic cluste
