The Chelsea 871 Series Power Take-Off, part number 871XDFJP-H5AC or 871XDFJPH5AC, is a 10-bolt PowerShift (hydraulic-shift) PTO designed for Allison transmissions. The series carries a continuous torque rating of up to 670 lb-ft (908 N-m), with no derating required for continuous-duty applications. Nine speed ratios and thirteen output configurations give installers the flexibility to match a wide range of driven-equipment requirements. The compact housing reduces clearance concerns in tight installations. Chelsea's 871 Series replaces the earlier 870 Series and adds a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between housing and bearing cap to improve clamp load and dampen vibration, wet spline pump flange, SmartStart, and Quiet Gear options. Call us to confirm the right configuration for your specific application.
The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand solutions in a single platform: Wet Spline pump flange for extended PTO and pump shaft life, SmartStart to reduce shock load at start-up, and Quiet Gear input. Electronic Overspeed Control (EOC) is available to protect driven equipment from overspeed events. The 871 Series directly replaces the Chelsea 870 Series. Reference documents for this series include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Common markets include fire and rescue, truck cranes, pumper-cleaner units, and refuse vehicles.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque rating up to 670 lb-ft (908 N-m) - no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than gray iron, replaces the 870 Series design
O-ring sealing between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios and thirteen output options for broad application flexibility
Wet spline pump flange, SmartStart, and Quiet Gear options available to protect driven equipment and reduce shock load
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m) - check application pages for actual rating
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant System: Pressure Lube, Wet Spline
- Output Shaft Types: 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 Types: SAE B Pump Flange, SAE C Pump Flange
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM (48 kW at 500 RPM, 95 kW at 1000 RPM)
- Continuous Operation: Yes
- Options: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
- Supersedes: Chelsea 870 Series
Additional Information
The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand solutions in a single platform: Wet Spline pump flange for extended PTO and pump shaft life, SmartStart to reduce shock load at start-up, and Quiet Gear input. Electronic Overspeed Control (EOC) is available to protect driven equipment from overspeed events. The 871 Series directly replaces the Chelsea 870 Series. Reference documents for this series include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US). Common markets include fire and rescue, truck cranes, pumper-cleaner units, and refuse vehicles.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
