The Chelsea 823 Series Power Take-Off Assembly, part number 823XBAKP-A4XS or 823XBAKPA4XS, is an extra heavy-duty PTO built for high-torque applications including oil field, logging, and pumper cleaner trucks. It mounts via an 8-bolt pattern and fits Eaton/Fuller, Allison, Volvo/Mack, and other compatible transmissions. The output shaft is a 1-1/2" 10-tooth spline with a 1410 Series companion flange, delivering up to 95 HP at 1,000 RPM and 48 HP at 500 RPM. Intermittent torque is rated at 500 lb-ft (678 Nm) - check the Chelsea application pages to confirm the actual torque rating for your specific installation. Shift is mechanical lever. Continuous operation is supported with a 30% de-rating. Call us to confirm proper fit for your application.
The Chelsea 823 Series is designed for demanding work cycles in oil and gas, forestry, and mobile equipment. The cast iron housing and tapered cone bearings on the output shaft provide load-bearing capability suited to high-torque drives like blowers, log loaders, and vacuum trucks. Seven internal speed ratios are available across the 823 Series, and four shift options make it adaptable to a range of truck configurations. The 823XBAKP-A4XS specifically features a 1410 companion flange output and lever/mechanical shift. Refer to Parker Chelsea application pages to confirm gear ratio, speed, and torque for your specific chassis and transmission.
Features
Extra heavy-duty 8-bolt mounting, fits Eaton/Fuller, Allison, Volvo/Mack, and other compatible transmissions
Mechanical lever shift with air shift also available in the 823 Series
1-1/2" 10-tooth spline output shaft with 1410 Series companion flange
Intermittent torque up to 500 lb-ft (678 Nm); verify actual rating on Chelsea application pages
Shaft power: 48 HP (36 kW) at 500 RPM, 95 HP (71 kW) at 1,000 RPM
Direct mount pump outputs; cast iron housing with tapered cone bearings on output shaft
Tech Specs
- Intermittent Torque: 500 lb-ft / 678 Nm (Check Chelsea Application Pages for actual torque rating)
- Shift Type: Lever, Mechanical
- Output Power: 56+ HP / 51+ kW
- Transmission Manufacturer Compatibility: Eaton/Fuller, Allison, Volvo/Mack, Other
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Series Companion Flange
- Mounting Type: 8-Bolt
- Shaft Power: 48 HP (36 kW) at 500 RPM; 95 HP (71 kW) at 1,000 RPM
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 823 Series is designed for demanding work cycles in oil and gas, forestry, and mobile equipment. The cast iron housing and tapered cone bearings on the output shaft provide load-bearing capability suited to high-torque drives like blowers, log loaders, and vacuum trucks. Seven internal speed ratios are available across the 823 Series, and four shift options make it adaptable to a range of truck configurations. The 823XBAKP-A4XS specifically features a 1410 companion flange output and lever/mechanical shift. Refer to Parker Chelsea application pages to confirm gear ratio, speed, and torque for your specific chassis and transmission.
