Alfa Laval Toftejorg TZ-74 tank cleaning machine — crown wheel kit, hardened steel. Replacement drive gear for the rotary tank cleaning head used on marine cargo tank cleaning, chemical parcel tanker COW (crude oil washing), and industrial storage tank washing. Wear-part; scheduled replacement per Alfa Laval Toftejorg service interval (typically 3,000-5,000 operating hours). Direct interchange to hardened Butterworth and Scanjet equivalents on request. Ships DHL express to marine ports globally within 48-72 h.