The Chelsea 871 Series Power Take-Off, part number 871XDFJW-N5RY, is a 10-bolt PowerShift (hydraulic) PTO designed for Allison transmissions. The 871 Series carries a continuous torque rating of up to 670 lb-ft (908 Nm) with no derating required for continuous duty operation. Its compact housing is built around a ductile iron bearing cap, which is 117% stronger than the gray iron cap used in the predecessor 870 Series. An o-ring sealing configuration between the housing and bearing cap improves clamp load and reduces vibrational effects. Nine speed ratios and thirteen output options give this unit broad application flexibility across fire and rescue, refuse, pumper cleaner, and truck crane platforms. Pro Gear and Transmission is your source for genuine Chelsea PTO units.
Features
10-bolt mounting, PowerShift (hydraulic) shift type
Continuous torque rating up to 670 lb-ft (908 Nm), no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than the gray iron cap in the predecessor 870 Series
O-ring seal between housing and bearing cap for improved clamp load and vibration resistance
Nine speed ratios and thirteen output options
Compatible with Wet Spline, SmartStart, and Quiet Gear options
Tech Specs
- Shift Type: PowerShift (Hydraulic)
- Mounting: 10-Bolt
- Continuous Torque: 670 lb-ft (908 Nm)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Transmission Compatibility: Allison
- 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
- Continuous Operation: Yes
- Speed Ratios: Nine
- Output Options: Thirteen
- Lubrication: Pressure Lube, Wet Spline
Additional Information
The 871 Series replaces the Chelsea 870 Series PTO. Improvements over the 870 Series include the ductile iron bearing cap and the updated o-ring sealing configuration. The 871 Series is the only Chelsea PTO to offer all three of Chelsea's solutions: Wet Spline, SmartStart, and Electronic Overspeed Control (EOC). 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.
