The Chelsea 878 Series Power Take-Off Assembly, part number 878XBFJW-M5RS or 878XBFJWM5RS, is a constant mesh PTO engineered for Allison and CAT 10-bolt transmissions. The 878 Series delivers up to 670 lb-ft continuous torque in the smallest package available for this torque class. Key construction improvements over the predecessor 877 Series include 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 rotatable cast iron flanges to reduce interference clearance issues. Nine speed ratios cover both low and high speed applications. A wet spline lubrication option extends shaft life 7 to 10 times compared to standard lubrication. Typical markets include snow and ice control, vacuum, aerial, and refuse equipment. 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, 117% stronger than gray iron, for improved durability against engine vibration
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Nine speed ratios including low and high speed ranges
Wet spline lubrication option provides 7 to 10 times greater output shaft life
Rotatable cast iron flanges reduce interference clearance issues; positive stop on driveline outputs eliminates oil seal damage
Tech Specs
- Shift Type: Constant Mesh
- Transmission Fitment: Allison and CAT 10-Bolt
- Continuous Torque Rating: 670 lb-ft (908 Nm) - check application pages for actual torque rating
- Speed Ratios: Nine ratios including low and high speeds
- 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
- Output Flange Options: SAE B pump flange, SAE C pump flange, 1410 Series companion flange, DIN flanges
- Lubrication: Pressure lube or wet spline options
- Continuous Operation: Yes
- Output Power: 56+ HP (41+ kW)
- Markets: Snow and ice, vacuum, aerial, refuse
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
