The Chelsea 871XAFJP-N5XV is a 10-bolt, hydraulic PowerShift Power Take-Off from the Chelsea 871 Series, designed for Allison transmission applications. The 871 Series carries a continuous torque rating of 670 lb-ft (908 Nm) with no derating required for continuous duty. Its compact housing is engineered to minimize clearance conflicts during installation, and multiple assembly arrangements give installers flexibility in tight bays. The series supports nine speed ratios and thirteen output options, covering SAE B, SAE BB, and SAE C pump spline configurations as well as companion flange outputs. Shaft power reaches 128 HP at 1,000 RPM. Common markets include fire and rescue, refuse, truck cranes, and pumper-cleaner trucks. A genuine Chelsea part, sold by Pro Gear and Transmission.
Features
10-bolt mounting with compact housing to reduce clearance issues
Hydraulic PowerShift (pressure lube, wet spline) operation
Continuous torque rating up to 670 lb-ft (908 Nm) - no continuous-duty derating required
Shaft power output up to 128 HP at 1,000 RPM
Nine speed ratios and thirteen output options
Ductile iron bearing cap - 117% stronger than gray iron predecessor with o-ring sealing between housing and bearing cap
Tech Specs
- Series: Chelsea 871 Series
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison
- Continuous Torque: 670 lb-ft (908 Nm)
- Shaft Power: 128 HP at 1,000 RPM / 64 HP at 500 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 Flange Types: SAE B Pump Flange, SAE C Pump Flange
- Lubrication: Pressure Lube, Wet Spline
- Continuous Operation: Yes
- Bearing Cap Material: Ductile Iron
Additional Information
The 871 Series replaces the earlier Chelsea 870 Series PTO. Key upgrades include a ductile iron bearing cap (117% stronger than the gray iron cap used on the 870 Series) and an o-ring sealing configuration between the housing and bearing cap for improved clamp load and reduced vibrational effects. The series is the only Chelsea PTO line to offer all three of Chelsea's high-demand options in a single platform: Wet Spline, SmartStart, and Quiet Gear. Electronic Overspeed Control (EOC) is available to protect driven equipment. Typical market applications include fire and rescue apparatus, refuse trucks, truck cranes, and pumper-cleaner units. Parker documents covering this unit include the 267/281/288/871/878 Series Owner's Manual and the 871 Series Parts List (HY25-2871-M1/US).Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
