The Chelsea 871XAFJP-B5RY or 871XAFJPB5RY is a 10-bolt PowerShift (hydraulic shift) Power Take-Off from the Chelsea 871 Series, designed for Allison transmissions. The 871 Series supports continuous torque up to 670 lb-ft (908 N-m) with no derating required for continuous-duty operation. The compact housing reduces clearance issues during installation, and the ductile iron bearing cap delivers 117% greater strength than gray iron. An O-ring sealing configuration between the housing and bearing cap improves clamp load and reduces the vibrational effects of modern engine designs. This is a genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 871 Series replaces the earlier 870 Series PTO. Typical markets include fire and rescue, truck cranes, pumper-cleaner, and refuse vehicles. Refer to the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual for complete assembly and service information.
Features
10-bolt PowerShift (hydraulic) mounting for Allison transmissions
Continuous torque capacity up to 670 lb-ft / 908 N-m, no derating required for continuous-duty use
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
Wet Spline pump flange option, SmartStart option, and Quiet Gear input option available; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Torque Capacity: 670 lb-ft / 908 N-m (verify actual rating on application pages)
- Shaft Power: 64 HP at 500 RPM / 128 HP at 1000 RPM (48 kW at 500 RPM / 95 kW at 1000 RPM)
- Speed Ratios: Nine available
- Output Options: Thirteen available
- Lubricant System: Pressure Lube and Wet Spline options
- Available 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
- Continuous Operation: Yes
- Options: Wet Spline, SmartStart, Quiet Gear, Electronic Overspeed Control (EOC)
Additional Information
The Chelsea 871 Series replaces the earlier 870 Series PTO. Typical markets include fire and rescue, truck cranes, pumper-cleaner, and refuse vehicles. Refer to the 871 Series Parts List (HY25-2871-M1/US) and the 267/281/288/871/878 Series Owner's Manual for complete assembly and service information.
Parts Manual: Chelsea 871 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
