The Chelsea 878 Series Power Take-Off, part number 878XEFJW-M5RZ or 878XEFJWM5RZ, is a constant mesh PTO engineered to fit Allison and CAT 10-bolt transmissions. The 878 Series improves on the proven 877 Series platform with a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for improved clamp load, and an 80% increase in steel disc thickness within the clutch pack. These upgrades specifically address vibrational damage from modern engine designs. Nine speed ratios cover both low and high speed applications. Rotatable cast-iron flanges reduce interference clearance issues, and a Wet Spline Lubrication option extends shaft life 7 to 10 times over standard configurations. A hose is included. Common applications include refuse, vacuum, aerial, and snow-and-ice equipment. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap, 117% stronger than gray iron, reduces damage from engine vibration
O-ring sealing configuration between housing and bearing cap improves clamp load
Steel disc thickness within clutch pack increased 80% over the 877 Series design
Nine speed ratios including low and high speeds for application flexibility
Rotatable cast-iron flanges reduce interference clearance issues at driveline outputs
Wet Spline Lubrication option extends output shaft life 7 to 10 times; hose included
Tech Specs
- Shift Type: Constant Mesh
- Mounting Type: 10-Bolt
- Transmission Compatibility: Allison and CAT 10-Bolt transmissions
- Continuous Torque Rating: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Output Shaft Options: SAE B (7/8" - 13T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE C (1-1/4" - 14T) Pump Spline, DIN 5462 Pump Spline, 1410 Series Companion Flange, DIN 120 Flange, DIN 100 Flange
- Output Flange Options: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube (P) or Wet Spline (W)
- Speed Ratios: Nine ratios including low and high speeds
- 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.
