The Chelsea 823 Series Power Take-Off Assembly, part number 823XMAHX-Y3GS or 823XMAHXY3GS, is an extra heavy-duty PTO engineered for high-torque applications including oil field equipment, logging, pumper cleaner trucks, and mining. Mounting is 8-bolt, shift type is lever/mechanical, and the output shaft is a 1-1/2" 10-spline configuration fitted with a 1410 Series companion flange for direct driveline connection. Intermittent torque is rated at up to 500 lb-ft (678 Nm, with final values subject to application confirmation). Shaft power output reaches 95 HP at 1000 RPM. The 823 Series fits Eaton/Fuller, Volvo/Mack, Allison, and other transmissions with an 8-bolt PTO aperture. Direct mount pump outputs are supported. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 823 Series is suited for demanding mobile and stationary applications including oil and gas, forestry, and industrial pumping equipment. The cast iron housing and tapered cone bearings on the output shaft provide strong load-bearing capability. Seven internal speed ratios are available across the 823 Series. For application-specific torque ratings and transmission compatibility, consult the Chelsea 823 Series application pages or call Pro Gear and Transmission to confirm the right configuration for your equipment.
Features
Extra heavy-duty design for high-torque applications: oil field, logging, pumper cleaner trucks, and mining
8-bolt mounting fits Eaton/Fuller, Volvo/Mack, Allison, and other compatible transmissions
Lever/mechanical shift type
1-1/2" 10-spline output shaft with 1410 Series companion flange
Intermittent torque rated up to 500 lb-ft (678 Nm) - verify rating on application pages
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM; direct mount pump outputs supported
Tech Specs
- Intermittent Torque: Up to 500 lb-ft / 678 Nm (verify on application pages for actual torque rating)
- 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)
- Compatible Transmissions: Eaton/Fuller, Volvo/Mack, Allison, Other 8-bolt aperture
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 823 Series is suited for demanding mobile and stationary applications including oil and gas, forestry, and industrial pumping equipment. The cast iron housing and tapered cone bearings on the output shaft provide strong load-bearing capability. Seven internal speed ratios are available across the 823 Series. For application-specific torque ratings and transmission compatibility, consult the Chelsea 823 Series application pages or call Pro Gear and Transmission to confirm the right configuration for your equipment.
