The Chelsea 871 Series Power Take-Off, part number 871XBFJP-B3SV or 871XBFJPB3SV, is a 10-bolt hydraulic PowerShift PTO engineered 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 reduce vibrational effects and improve clamp load retention. Nine speed ratios and thirteen output configurations give installers broad flexibility across fire and rescue, truck crane, pumper/cleaner, and refuse applications. The 871 Series is the only Chelsea PTO to combine Wet Spline, SmartStart, and Quiet Gear options in a single compact housing. Call us to confirm proper fit for your application.
The 871 Series replaces the earlier Chelsea 870 Series PTO. Upgrades include the ductile iron bearing cap and the O-ring sealing configuration, both aimed at managing the vibrational loads produced by current and future engine designs. The compact housing profile is engineered to reduce clearance conflicts during installation, and multiple assembly arrangements support varied mounting orientations. Reference documents for this series include the 267/281/288/871/878 Series Owner's Manual, 871 Series Parts List (HY25-2871-M1/US), and 871 Series Sales Literature published by Parker Chelsea.
Features
10-Bolt PowerShift (Hydraulic) mounting for Allison transmissions
Ductile iron bearing cap - 117% stronger than gray iron predecessor
O-ring sealing configuration reduces vibrational effects and improves clamp load
Continuous torque capacity up to 670 lb-ft / 908 N-m - no derating for continuous duty
Nine speed ratios and thirteen output options for broad application flexibility
Wet Spline, SmartStart, and Quiet Gear options available - the only Chelsea PTO to offer all three
Electronic Overspeed Control (EOC) available to protect driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubricant System: Pressure Lube and 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
- Continuous Operation: Yes
- Applications: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
- Optional Features: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Upgrades include the ductile iron bearing cap and the O-ring sealing configuration, both aimed at managing the vibrational loads produced by current and future engine designs. The compact housing profile is engineered to reduce clearance conflicts during installation, and multiple assembly arrangements support varied mounting orientations. Reference documents for this series include the 267/281/288/871/878 Series Owner's Manual, 871 Series Parts List (HY25-2871-M1/US), and 871 Series Sales Literature published by Parker Chelsea.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
