Variable speed 90VDC gearmotor for USI ARL Series roll laminating machines. May be listed as part number 300PVSR or A3225 in Owner's Manual. Does not fit machines with the following serial number sequences: 0****-****, 1****-****, 4****-****, 5****-****, 9****-****, G****-****, W****-****, or machines with serial numbers beginning with ">H.">