The Chelsea 871XAFJW-B5RY or 871XAFJWB5RY is a 10-bolt PowerShift (hydraulic) Power Take-Off from the 871 Series, designed for Allison transmissions. The 871 Series supports continuous torque up to 670 lb-ft (908 N-m) with no derating required for continuous-duty applications. A ductile iron bearing cap rated 117% stronger than gray iron and an O-ring sealing configuration between the housing and bearing cap reduce the damaging vibrational effects caused by modern engine designs. Nine speed ratios and thirteen output options cover a wide range of application requirements, including fire and rescue, refuse, pumper/cleaner, and crane trucks. 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 specific Allison transmission and vehicle application.
The Chelsea 871 Series replaces the 870 Series PTO. Typical markets include fire and rescue apparatus, truck cranes, pumper/cleaner trucks, and refuse vehicles. The 871 Series is the only Chelsea PTO to offer all three high-demand options together: Wet Spline, SmartStart, and Quiet Gear. Electronic Overspeed Control (EOC) is available to protect driven equipment. Relevant Parker Chelsea documents include the 267/281/288/871/878 Series Owner's Manual, the 871 Series Parts List (HY25-2871-M1/US), and the 871 Series Sales Literature.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque up to 670 lb-ft (908 N-m) with no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than gray iron, with O-ring sealing to resist vibration
Nine speed ratios and thirteen output options for versatile application matching
Wet Spline pump flange extends PTO and pump shaft service life
SmartStart and Quiet Gear options available to reduce shock load and operating noise
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 ratings
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1000 RPM (48 kW at 500 RPM / 95 kW at 1000 RPM)
- Output Shaft Types: SAE B (7/8" - 13T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE C (1-1/4" - 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
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubrication: Pressure Lube and Wet Spline
- Continuous Operation: Yes
Additional Information
The Chelsea 871 Series replaces the 870 Series PTO. Typical markets include fire and rescue apparatus, truck cranes, pumper/cleaner trucks, and refuse vehicles. The 871 Series is the only Chelsea PTO to offer all three high-demand options together: Wet Spline, SmartStart, and Quiet Gear. Electronic Overspeed Control (EOC) is available to protect driven equipment. Relevant Parker Chelsea documents include the 267/281/288/871/878 Series Owner's Manual, the 871 Series Parts List (HY25-2871-M1/US), and the 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.
