The Chelsea 823XMAHX-Y5XS or 823XMAHXY5XS is an extra heavy-duty power take-off assembly from Parker Chelsea's 823 Series, designed for high-torque applications including oil field, logging, and pumper cleaner trucks. It mounts via an 8-bolt aperture and fits automatic and manual transmissions from Eaton/Fuller, Volvo/Mack, Allison, and other manufacturers. Shift type is lever/mechanical. The output shaft is a 1-1/2" 10-tooth spline with a 1410 Series companion flange. Intermittent torque rating is 500 lb-ft (678 Nm) - check application pages for actual torque ratings. Output power exceeds 56 HP (51+ kW), with shaft power of 48 HP at 500 RPM and 95 HP at 1000 RPM. The cast iron housing features tapered cone bearings on the output shaft for greater load-bearing capability. Call us to confirm proper fit for your transmission and application.
The Chelsea 823 Series is Parker Chelsea's flagship PTO line, built for the most demanding heavy-duty applications. The cast iron housing and tapered cone bearings on the output shaft provide exceptional load-bearing capability. Direct mount pump outputs support SAE C pump flange configurations. Seven internal speed ratios are available across the 823 Series, and the space-saving design is engineered for maximum clearance under the truck. Suitable for oil and gas, forestry, mobile, and mining equipment. Call Pro Gear and Transmission to confirm which 823 Series configuration fits your transmission and equipment.
Features
Extra heavy-duty 823 Series design for high-torque applications: oil field, logging, and pumper cleaner trucks
8-bolt mounting aperture fits Eaton/Fuller, Volvo/Mack, Allison, and other automatic and manual transmissions
Lever/mechanical shift type
1-1/2" 10-tooth spline output shaft with 1410 Series companion flange
Intermittent torque: 500 lb-ft / 678 Nm (verify on Chelsea application pages for actual rating)
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM
Tech Specs
- Intermittent Torque: 500 lb-ft / 678 Nm (Check Application Pages for Actual Torque Ratings)
- Shift Type: Lever, Mechanical
- Mounting Type: 8-Bolt
- Output Shaft Type: 1-1/2" - 10T Spline with 1410 Series Companion Flange
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 48 HP (500 RPM), 95 HP (1000 RPM) / 36 kW (500 RPM), 71 kW (1000 RPM)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Allison, Other
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 823 Series is Parker Chelsea's flagship PTO line, built for the most demanding heavy-duty applications. The cast iron housing and tapered cone bearings on the output shaft provide exceptional load-bearing capability. Direct mount pump outputs support SAE C pump flange configurations. Seven internal speed ratios are available across the 823 Series, and the space-saving design is engineered for maximum clearance under the truck. Suitable for oil and gas, forestry, mobile, and mining equipment. Call Pro Gear and Transmission to confirm which 823 Series configuration fits your transmission and equipment.
Parts Manual: Chelsea 823 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
