852 Series

The Chelsea 852 Series Power Take-Off (PTO) is a heavy-duty 8-bolt hydraulic Powershift unit designed for demanding vocational and mobile applications. Built with a rugged cast iron housing and heavy-duty ball bearings on the output shaft, it incorporates a large clutch pack that enables torque capacity of up to 500 lb-ft while maintaining long service life under continuous use. Engineered as a dependable workhorse within the Chelsea PTO lineup, the 852 Series offers a balance of power and flexibility with three internal speed ratios, three shift options, and three output configurations. This allows the PTO to be adapted to a variety of equipment and hydraulic system requirements. Standard pressure lubrication enhances durability and performance under heavy load conditions, making the system well suited for continuous-duty applications. The Chelsea 852 Series PTO is commonly used in oil and gas operations, mobile equipment, and vocational or municipal fleets where reliability and torque output are critical. Backed by over 65 years of Chelsea engineering expertise, it is designed to deliver consistent performance in challenging environments.