The Chelsea 871XJFJW-N5RY is a 10-bolt hydraulic PowerShift Power Take-Off from the 871 Series, designed for Allison transmissions. The 871 Series features a compact housing that minimizes clearance issues and a ductile iron bearing cap rated 117% stronger than its gray iron predecessor. An o-ring sealing configuration between the housing and bearing cap improves clamp load and reduces vibration. The series is rated for continuous duty operation up to 670 lb-ft (908 N-m) of torque, with nine available speed ratios and thirteen output options. Common markets include fire and rescue, truck cranes, pumper cleaners, and refuse vehicles. Pro Gear and Transmission carries genuine Chelsea PTO units for the drivetrain professional.
Features
10-bolt mounting configuration for Allison transmission applications
Hydraulic PowerShift (PowerShift) shift type for on-the-go engagement
Continuous torque rating up to 670 lb-ft (908 N-m) series capacity
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing between housing and bearing cap to improve clamp load and reduce vibration
Compact housing design to reduce installation clearance issues
Tech Specs
- Series: Chelsea 871 Series
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque (Series): 670 lb-ft / 908 N-m
- Shaft Power (Series): 64 HP at 500 RPM / 128 HP at 1,000 RPM
- Output Shaft Options: SAE B (7/8" - 13T), SAE BB (1" - 15T), SAE C (1-1/4" - 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 Available: Nine
- Output Options Available: Thirteen
- Lubricant: Pressure Lube (P), Wet Spline (W)
- Options Available: Wet Spline, SmartStart, Quiet Gear
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Upgrades include the ductile iron bearing cap and o-ring sealing configuration, both focused on reducing damage from engine vibration. The series also supports Chelsea's Wet Spline pump flange option to extend PTO and pump shaft service life, as well as an Electronic Overspeed Control (EOC) feature to protect driven equipment. SmartStart is available on select configurations to reduce shock load at start-up. Applicable 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.
