The Chelsea 878 Series Power Take-Off Assembly, part number 878XAFJP-M3AC or 878XAFJPM3AC, is a constant mesh PTO engineered for Allison and CAT 10-bolt transmissions. The 878 Series delivers the highest torque capability in its class - up to 670 lb-ft continuous duty torque - all in a compact package. Nine speed ratios cover both low and high speed applications. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load and reduces vibrational damage. Rotatable cast-iron flanges cut interference clearance issues, and the Wet Spline Lubrication option extends shaft life by 7 to 10 times. Hydraulic hose is included. Call us to confirm proper fit for your application.
Features
Constant mesh design with cast iron housing fits Allison and CAT 10-bolt transmissions
Ductile iron bearing cap rated 117% stronger than gray iron
Single continuous duty torque rating up to 670 lb-ft (908 Nm)
Nine speed ratios available, including low and high speed options
O-ring sealing configuration reduces vibrational effects and improves housing clamp load
Wet Spline Lubrication option extends output shaft life 7 to 10 times; hydraulic hose included
Tech Specs
- Series: Chelsea 878 Series
- Shift Type: Constant Mesh
- Transmission Mounting: Allison and CAT 10-Bolt
- Continuous Torque Rating: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Output Shaft Options: SAE B (7/8 in. - 13T) Pump Spline, SAE BB (1 in. - 15T) Pump Spline, SAE C (1-1/4 in. - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Lubrication: Pressure Lube or Wet Spline options available
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
