The Chelsea 221 Series Power Take-Off, part number 221ZEAHX-V3XK or 221ZEAHXV3XK, is a 6-bolt mounted PTO built for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and delivers a 1-1/4" round output shaft with keyway. Intermittent torque is rated at 250 lb-ft (339 Nm) -- check application pages for actual ratings on your specific installation. Shaft power output reaches 48 HP (36 kW) at 1000 RPM and 24 HP (18 kW) at 500 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. The cast iron housing features tapered cone output bearings for greater load capacity versus needle bearings, and greaseable pump shafts help reduce spline fretting and corrosion. Available in standard or low-profile housing configurations. Call us to confirm proper fit for your transmission and application.
The 221 Series offers twenty-six output options, three internal speed ratios, and eleven shift options, making it adaptable across a wide range of vocational truck configurations. The 360-degree rotatable flange and optional self-lube feature for transmissions with restricted PTO lubrication flow add further flexibility for demanding installations such as dump trucks, tow and recovery rigs, and aerial equipment.
Features
6-bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission manufacturers
Wire/cable mechanical shift operation
1-1/4" round output shaft with keyway
Intermittent torque rated at 250 lb-ft (339 Nm) -- verify on application pages for your specific setup
Shaft power: 24 HP (18 kW) at 500 RPM, 48 HP (36 kW) at 1000 RPM
Greaseable pump shafts reduce spline fretting and corrosion; available in standard or low-profile housing
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check application pages for actual torque ratings for your installation)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with key
- Transmission Manufacturer Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP (18 kW) at 500 RPM; 48 HP (36 kW) at 1000 RPM
- Housing: Cast iron, available in standard or low-profile
- Output Bearing: Tapered cone bearing
Additional Information
The 221 Series offers twenty-six output options, three internal speed ratios, and eleven shift options, making it adaptable across a wide range of vocational truck configurations. The 360-degree rotatable flange and optional self-lube feature for transmissions with restricted PTO lubrication flow add further flexibility for demanding installations such as dump trucks, tow and recovery rigs, and aerial equipment.
