The Chelsea 871 Series Power Take-Off, part number 871XBFJP-B5AB or 871XBFJPB5AB, is a 10-bolt hydraulic PowerShift PTO designed for Allison transmissions. The 871 Series delivers continuous torque capacity up to 670 lb-ft (908 N-m) with no derating required for continuous-duty operation. Nine speed ratios and thirteen output options cover a wide range of hydraulic and mechanical drive requirements. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load and resists engine-induced vibration. Optional Wet Spline pump flange, SmartStart, Quiet Gear input, and Electronic Overspeed Control (EOC) extend equipment protection across demanding vocations including fire and rescue, refuse, pumper-cleaner, and truck crane service. The compact housing profile minimizes clearance conflicts during installation. Call us to confirm proper fit for your application.
Features
10-bolt hydraulic PowerShift mounting for Allison transmissions
Continuous torque capacity 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 vibration effects and improves clamp load
Nine speed ratios and thirteen output options
Optional Wet Spline pump flange, SmartStart, Quiet Gear input, and Electronic Overspeed Control (EOC) available
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 torque ratings)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 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 and Wet Spline
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
