The Chelsea 871 Series Power Take-Off, part number 871XEFJW-B5RF or 871XEFJWB5RF, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The series carries a continuous torque rating up to 670 lb-ft (908 N-m) with no derating required for continuous-duty operation. A ductile iron bearing cap, 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap address vibrational stress from modern engine designs. Nine speed ratios and thirteen output options give installers broad flexibility. The 871 Series is the only Chelsea PTO to combine Wet Spline, SmartStart, and Quiet Gear options in a single compact housing. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
The 871 Series replaces the Chelsea 870 Series PTO. Common markets include fire and rescue, truck cranes, pumper cleaner, and refuse applications. Reference documents: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List HY25-2871-M1/US; 871 Series Sales Literature.
Features
10-Bolt PowerShift (Hydraulic) mounting for Allison transmissions
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing configuration reduces vibrational effects and improves clamp load
Continuous torque capacity up to 670 lb-ft (908 N-m), no continuous-duty derating required
Nine speed ratios and thirteen output options for flexible installation
Wet Spline, SmartStart, and Quiet Gear options available on a single platform
Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m) - check application pages for actual torque ratings
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Speed Ratios: Nine
- Output Options: Thirteen
- 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 Types: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
Additional Information
The 871 Series replaces the Chelsea 870 Series PTO. Common markets include fire and rescue, truck cranes, pumper cleaner, and refuse applications. Reference documents: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List HY25-2871-M1/US; 871 Series Sales Literature.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
