The Chelsea 221ZCAKP-M6AZ or 221ZCAKPM6AZ is a 6-bolt Power Take-Off assembly from the Chelsea 221 Series, built for low-speed, heavy-duty service. Shift type is wire/cable mechanical. The output shaft is a 1-1/4" round shaft with keyway. Intermittent torque is rated at 250 lb-ft (339 Nm); check application pages for actual torque ratings for your installation. Shaft power output is 24 HP at 500 RPM and 48 HP at 1,000 RPM. The 221 Series uses a cast iron housing with tapered cone output bearings for strong load-bearing capability, and greaseable pump shafts to reduce spline fretting and corrosion. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, Hino, and other 6-bolt aperture transmissions. Call us to confirm proper fit for your application.
The Chelsea 221 Series PTO is designed for aerial, vocational, municipal, tow and recovery, dump truck, and other mobile equipment applications. The series features a space-saving air shift cover for maximum under-truck clearance, a self-lube option for transmissions with limited PTO lubrication, and Chelsea's 360-degree rotatable flange among its output options. Three internal speed ratios and multiple shift options make this a versatile choice across a wide range of 6-bolt transmission applications.
Features
6-Bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmissions
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque: 250 lb-ft (339 Nm) - verify rating on application pages
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Greaseable pump shafts to resist spline fretting and corrosion; cast iron housing with tapered cone output bearings
Tech Specs
- Intermittent Torque: 250 lb-ft (339 Nm) - Check Application Pages for Actual Torque Ratings
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP, 31-40 kW
- Output Shaft Type: 1-1/4" Round with Key
- Transmission Manufacturer: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP (500 RPM), 48 HP (1,000 RPM), 18 kW (500 RPM), 36 kW (1,000 RPM)
- Output Shaft Mount Type: SAE B 4-Bolt Flange
- Mounting Bolt Hole Quantity: 10
Additional Information
The Chelsea 221 Series PTO is designed for aerial, vocational, municipal, tow and recovery, dump truck, and other mobile equipment applications. The series features a space-saving air shift cover for maximum under-truck clearance, a self-lube option for transmissions with limited PTO lubrication, and Chelsea's 360-degree rotatable flange among its output options. Three internal speed ratios and multiple shift options make this a versatile choice across a wide range of 6-bolt transmission applications.
Parts Manual: Chelsea 221 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
