The Chelsea 871 Series Power Take-Off, part number 871XEFJP-B5RS or 871XEFJPB5RS, is a 10-bolt hydraulic PowerShift PTO designed 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. Nine speed ratios and thirteen output options give installers broad flexibility across fire and rescue, refuse, pumper/cleaner, and truck crane applications. A ductile iron bearing cap delivers 117% greater strength than gray iron, and an O-ring sealing configuration between the housing and bearing cap reduces vibrational effects and improves clamp load. Optional Wet Spline pump flange, SmartStart, and Quiet Gear configurations are available. Call us to confirm which configuration matches your application.
The 871 Series supersedes the Chelsea 870 Series PTO. All upgraded features - including the ductile iron bearing cap and O-ring seal configuration - are focused on reducing vibrational damage associated with modern engine designs. The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand options in a single platform: Wet Spline, SmartStart, and Quiet Gear. Applicable markets include fire and rescue, truck cranes, pumper/cleaner, and refuse vehicles. Reference documents: 267/281/288/871/878 Series Owner's Manual; 871 Series Parts List HY25-2871-M1/US.
Features
10-bolt hydraulic PowerShift mounting, designed for Allison transmissions
Continuous torque rating up to 670 lb-ft (908 N-m) - no continuous-duty derating required
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Nine speed ratios and thirteen output options for broad application flexibility
Optional Wet Spline pump flange, SmartStart shock-load reduction, Quiet Gear input, and Electronic Overspeed Control (EOC) available
Tech Specs
- Mounting: 10-bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison
- Continuous Torque: 670 lb-ft (908 N-m)
- Speed Ratios: Nine
- Output Options: Thirteen
- Output Shaft Types Available: 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 Available: SAE B Pump Flange, SAE C Pump Flange
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Lubricant System: Pressure Lube (P) with Wet Spline (W) option
- Continuous Operation: Yes
- Optional Features: Wet Spline pump flange, SmartStart, Quiet Gear input, Electronic Overspeed Control (EOC)
Additional Information
The 871 Series supersedes the Chelsea 870 Series PTO. All upgraded features - including the ductile iron bearing cap and O-ring seal configuration - are focused on reducing vibrational damage associated with modern engine designs. The 871 Series is the only Chelsea PTO to offer all three of Chelsea's high-demand options in a single platform: Wet Spline, SmartStart, and Quiet Gear. Applicable markets include fire and rescue, truck cranes, pumper/cleaner, and refuse vehicles. Reference documents: 267/281/288/871/878 Series Owner's Manual; 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.
