660 Series

The Chelsea 660 Series Power Take-Off (PTO) is a durable, cost-effective solution designed for demanding vocational applications that require higher torque capacity. Built with a rugged cast iron housing and tapered cone bearings on the output shaft, the 660 Series delivers a torque rating of up to 375 lb-ft along with extended service life in heavy-duty environments. It is an ideal step up from the 442 Series for applications requiring additional power and performance. Designed with installation and clearance in mind, the space-saving air shift cover helps maximize underbody clearance on the truck chassis. The 660 Series also features heavy-duty tapered bearings on the input shaft in place of needle bearings, improving load-handling capability and overall durability. Offering broad configuration flexibility, the PTO includes 26 output options—such as Chelsea’s 360-degree rotatable flange for optimal pump alignment—along with four internal speed ratios and ten shift options. This versatility makes it suitable for a wide range of vocational equipment setups. The Chelsea 660 Series PTO is commonly used in aerial devices, construction equipment, service trucks, dump trucks, trailers, and snow and ice removal applications. It is also well suited for blower and product pumps, supporting a wide range of mobile hydraulic needs across multiple industries.