Chelsea PTO Assembly 823XGAKP-M6GS or 823XGAKPM6GS is an 823 Series extra heavy-duty power take-off built for high-torque applications including oil field, logging, and pumper/cleaner trucks. The 8-bolt mounting pattern fits automatic and manual transmissions from Allison, Eaton/Fuller, Volvo/Mack, and other manufacturers. Shift is lever/mechanical, and the unit delivers an intermittent torque rating of 500 lb-ft (678 Nm) - check application pages for actual torque ratings on your specific install. Output is via a 1410 Series companion flange on a 1-1/2 inch, 10-tooth spline shaft. Shaft power rates at 48 HP at 500 RPM and 95 HP at 1000 RPM. The 823 Series features a cast iron housing with tapered cone bearings on the output shaft for greater load-bearing capability and direct-mount pump outputs. Call us to confirm proper fit for your transmission and application.
The Chelsea 823 Series is engineered for extra heavy-duty applications where peak torque demand is constant - oil field equipment, logging machinery, and pumper/cleaner trucks. The direct-mount pump outputs and cast iron housing make it a practical choice for fleet operators who need a durable, high-capacity PTO on 8-bolt transmission apertures. Seven internal speed ratios and multiple shift options give this series flexibility across a wide range of chassis configurations. Call us to confirm which ratio and shift configuration your application requires.
Features
8-Bolt mounting pattern compatible with Allison, Eaton/Fuller, Volvo/Mack, and other transmission manufacturers
Lever/mechanical shift with air shift also available across the 823 Series
Intermittent torque rating of 500 lb-ft (678 Nm) - verify actual rating on application pages for your installation
Output shaft: 1-1/2 inch, 10-tooth spline with 1410 Series companion flange
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM (36 kW and 71 kW respectively)
Cast iron housing with tapered cone bearings on output shaft for high load-bearing capacity
Tech Specs
- Intermittent Torque: 500 lb-ft / 678 Nm (Check Application Pages for Actual Torque Ratings)
- Shift Type: Lever, Mechanical
- Output Power: 56+ HP / 51+ kW
- Output Shaft Type: 1-1/2 inch - 10-Tooth Spline with 1410 Series Companion Flange
- Mounting Type: 8-Bolt
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Other
- Shaft Power: 48 HP at 500 RPM / 95 HP at 1000 RPM (36 kW at 500 RPM / 71 kW at 1000 RPM)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 823 Series is engineered for extra heavy-duty applications where peak torque demand is constant - oil field equipment, logging machinery, and pumper/cleaner trucks. The direct-mount pump outputs and cast iron housing make it a practical choice for fleet operators who need a durable, high-capacity PTO on 8-bolt transmission apertures. Seven internal speed ratios and multiple shift options give this series flexibility across a wide range of chassis configurations. Call us to confirm which ratio and shift configuration your application requires.
Parts Manual: Chelsea 823 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
