823 Series

The Chelsea 823 Series Power Take-Off (PTO) is a flagship heavy-duty solution designed for the most demanding vocational applications. Featuring a rugged cast iron housing and tapered cone bearings on the output shaft, the 823 delivers industry-leading torque capacity of up to 750 ft-lb, making it one of the most powerful PTOs in its class. Engineered for durability and performance, the space-saving air shift design helps maximize under-truck clearance, while heavy-duty tapered bearings on the output shaft provide enhanced load-carrying capability and long service life under extreme operating conditions. The 823 Series is supplied with a 1410 Series companion flange for added strength and compatibility in high-torque applications. With seven internal speed ratios and four shift options, this PTO offers strong configuration flexibility for a wide range of equipment needs. Both air and lever shift options are available, along with direct-mount pump outputs for installation versatility. The Chelsea 823 Series PTO is commonly used in oil and gas, mobile equipment, and forestry applications where maximum power and reliability are required. Over 65 years of Chelsea engineering expertise, it is built to deliver consistent performance in the most challenging environments.