The Chelsea 878XBKVW-M5RS or 878XBKVWM5RS is a constant-mesh Power Take-Off from Chelsea's 878 Series, engineered to fit Allison and CAT 10-bolt transmissions. The 878 Series carries up to 670 lb-ft of continuous torque, the highest torque capability in its class package. A 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 effects from modern engine designs. Rotatable, cast-iron flanges reduce interference clearance issues, while the Wet Spline Lubrication option provides 7 to 10 times greater shaft life. Nine speed ratios cover both low and high speed applications. Common markets include snow and ice control, vacuum, aerial, and refuse. 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 is 117% stronger than gray iron for improved durability
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Rotatable cast-iron flanges reduce interference clearance issues at driveline outputs
Wet Spline Lubrication option extends shaft life 7 to 10 times compared to standard lubrication
Nine speed ratios available, including low and high speed ranges; hydraulic hose included
Tech Specs
- Shift Type: Constant Mesh
- Mounting Type: 10-Bolt
- Compatible Transmissions: Allison, CAT
- Continuous Torque (Series Rating): 670 lb-ft (908 Nm) - check application pages for actual rating
- 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 Flange Options: SAE B Pump Flange, SAE C Pump Flange
- Lubricant System: Pressure Lube or Wet Spline
- Continuous Operation: Yes
- Speed Ratios: Nine, including low and high
- Hose: Included
Additional Information
Parts Manual: Chelsea 878 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
